fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu_objset.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dsl_dataset.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dsl_dir.h>

99653d4ee642c6528e88224f12409a5f23060994eschrock#include <sys/dsl_prop.h>

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens#include <sys/dsl_synctask.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu_traverse.h>

4e3c9f4489a18514e5e8caeb91d4e6db07c98415Bill Pijewski#include <sys/dmu_impl.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu_tx.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/arc.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zio.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zap.h>

ad135b5d644628e791c3188a6ecbd9c257961ef8Christopher Siden#include <sys/zfeature.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/unique.h>

fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_context.h>

cdf5b4ca0fa5ca7622b06bcb271be9e8a8245fecmmusante#include <sys/zfs_ioctl.h>

ecd6cf800b63704be73fb264c3f5b6e0dafc068dmarks#include <sys/spa.h>

088f389458728c464569a5506b58070254fa4f7dahrens#include <sys/zfs_znode.h>

c99e4bdccfb4ac4da569c64a43baaf908d726329Chris Kirby#include <sys/zfs_onexit.h>

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby#include <sys/zvol.h>

3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling#include <sys/dsl_scan.h>

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens#include <sys/dsl_deadlist.h>

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens#include <sys/dsl_destroy.h>

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens#include <sys/dsl_userhold.h>

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens#include <sys/dsl_bookmark.h>

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens#include <sys/dmu_send.h>

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens#include <sys/zio_checksum.h>

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens#include <sys/zio_compress.h>

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens#include <zfs_fletcher.h>

e19302335c33c8c6e0b0b5e426fc1f6352c84b5dbonwick

b515258426fed6c7311fd3f1dea697cfbd4085c6Matthew Ahrensint zfs_max_recordsize = 1 * 1024 * 1024;

b515258426fed6c7311fd3f1dea697cfbd4085c6Matthew Ahrens

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens#define SWITCH64(x, y) \

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens { \

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens uint64_t __tmp = (x); \

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens (x) = (y); \

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens (y) = __tmp; \

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens }

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens

55434c770c89aa1b84474f2559a106803511aba0ek#define DS_REF_MAX (1ULL << 62)

fa9e4066f08beec538e775443c5be79dd423fcabahrens

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbsextern inline dsl_dataset_phys_t *dsl_dataset_phys(dsl_dataset_t *ds);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs

5f7a8e6d750cb070a3347f045201c6206caee6aaDan McDonaldextern int spa_asize_inflation;

5f7a8e6d750cb070a3347f045201c6206caee6aaDan McDonald

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gaponstatic zil_header_t zero_zil;

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon

a9799022bd90b13722204e80112efaa5bf573099ckstatic int64_t

a9799022bd90b13722204e80112efaa5bf573099ckparent_delta(dsl_dataset_t *ds, int64_t delta)

a9799022bd90b13722204e80112efaa5bf573099ck{

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys_t *ds_phys;

a9799022bd90b13722204e80112efaa5bf573099ck uint64_t old_bytes, new_bytes;

a9799022bd90b13722204e80112efaa5bf573099ck

a9799022bd90b13722204e80112efaa5bf573099ck if (ds->ds_reserved == 0)

a9799022bd90b13722204e80112efaa5bf573099ck return (delta);

a9799022bd90b13722204e80112efaa5bf573099ck

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ds_phys = dsl_dataset_phys(ds);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs old_bytes = MAX(ds_phys->ds_unique_bytes, ds->ds_reserved);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs new_bytes = MAX(ds_phys->ds_unique_bytes + delta, ds->ds_reserved);

a9799022bd90b13722204e80112efaa5bf573099ck

a9799022bd90b13722204e80112efaa5bf573099ck ASSERT3U(ABS((int64_t)(new_bytes - old_bytes)), <=, ABS(delta));

a9799022bd90b13722204e80112efaa5bf573099ck return (new_bytes - old_bytes);

a9799022bd90b13722204e80112efaa5bf573099ck}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickdsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick int used = bp_get_dsize_sync(tx->tx_pool->dp_spa, bp);

fa9e4066f08beec538e775443c5be79dd423fcabahrens int compressed = BP_GET_PSIZE(bp);

fa9e4066f08beec538e775443c5be79dd423fcabahrens int uncompressed = BP_GET_UCSIZE(bp);

a9799022bd90b13722204e80112efaa5bf573099ck int64_t delta;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling dprintf_bp(bp, "ds=%p", ds);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(dmu_tx_is_syncing(tx));

fa9e4066f08beec538e775443c5be79dd423fcabahrens /* It could have been compressed away to nothing */

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (BP_IS_HOLE(bp))

fa9e4066f08beec538e775443c5be79dd423fcabahrens return;

fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(BP_GET_TYPE(bp) != DMU_OT_NONE);

ad135b5d644628e791c3188a6ecbd9c257961ef8Christopher Siden ASSERT(DMU_OT_IS_VALID(BP_GET_TYPE(bp)));

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds == NULL) {

ce636f8b38e8c9ff484e880d9abb27251a882860Matthew Ahrens dsl_pool_mos_diduse_space(tx->tx_pool,

ce636f8b38e8c9ff484e880d9abb27251a882860Matthew Ahrens used, compressed, uncompressed);

fa9e4066f08beec538e775443c5be79dd423fcabahrens return;

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon ASSERT3U(bp->blk_birth, >, dsl_dataset_phys(ds)->ds_prev_snap_txg);

b62969f868a827f0823a084bc0af9c7d8b76c659Matthew Ahrens dmu_buf_will_dirty(ds->ds_dbuf, tx);

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&ds->ds_lock);

a9799022bd90b13722204e80112efaa5bf573099ck delta = parent_delta(ds, used);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_referenced_bytes += used;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_compressed_bytes += compressed;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_uncompressed_bytes += uncompressed;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_unique_bytes += used;

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens if (BP_GET_LSIZE(bp) > SPA_OLD_MAXBLOCKSIZE) {

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens ds->ds_feature_activation_needed[SPA_FEATURE_LARGE_BLOCKS] =

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens B_TRUE;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens }

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens spa_feature_t f = zio_checksum_to_feature(BP_GET_CHECKSUM(bp));

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens if (f != SPA_FEATURE_NONE)

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens ds->ds_feature_activation_needed[f] = B_TRUE;

45818ee124adeaaf947698996b4f4c722afc6d1fMatthew Ahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&ds->ds_lock);

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD, delta,

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens compressed, uncompressed, tx);

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens dsl_dir_transfer_space(ds->ds_dir, used - delta,

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens DD_USED_REFRSRV, DD_USED_HEAD, tx);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwickdsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, dmu_tx_t *tx,

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick boolean_t async)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

43466aae47bfcd2ad9bf501faec8e75c08095e4fMax Grossman int used = bp_get_dsize_sync(tx->tx_pool->dp_spa, bp);

43466aae47bfcd2ad9bf501faec8e75c08095e4fMax Grossman int compressed = BP_GET_PSIZE(bp);

43466aae47bfcd2ad9bf501faec8e75c08095e4fMax Grossman int uncompressed = BP_GET_UCSIZE(bp);

43466aae47bfcd2ad9bf501faec8e75c08095e4fMax Grossman

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (BP_IS_HOLE(bp))

cdb0ab79ea1af7b8fc339a04d4bf7426dc77ec4emaybee return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ASSERT(dmu_tx_is_syncing(tx));

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick ASSERT(bp->blk_birth <= tx->tx_txg);

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds == NULL) {

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick dsl_free(tx->tx_pool, tx->tx_txg, bp);

ce636f8b38e8c9ff484e880d9abb27251a882860Matthew Ahrens dsl_pool_mos_diduse_space(tx->tx_pool,

ce636f8b38e8c9ff484e880d9abb27251a882860Matthew Ahrens -used, -compressed, -uncompressed);

cdb0ab79ea1af7b8fc339a04d4bf7426dc77ec4emaybee return (used);

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3P(tx->tx_pool, ==, ds->ds_dir->dd_pool);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs ASSERT(!ds->ds_is_snapshot);

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_will_dirty(ds->ds_dbuf, tx);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (bp->blk_birth > dsl_dataset_phys(ds)->ds_prev_snap_txg) {

a9799022bd90b13722204e80112efaa5bf573099ck int64_t delta;

c717a56157ae0e6fca6a1e3689ae1edc385716a3maybee

3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling dprintf_bp(bp, "freeing ds=%llu", ds->ds_object);

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick dsl_free(tx->tx_pool, tx->tx_txg, bp);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&ds->ds_lock);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT(dsl_dataset_phys(ds)->ds_unique_bytes >= used ||

a9799022bd90b13722204e80112efaa5bf573099ck !DS_UNIQUE_IS_ACCURATE(ds));

a9799022bd90b13722204e80112efaa5bf573099ck delta = parent_delta(ds, -used);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_unique_bytes -= used;

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&ds->ds_lock);

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens dsl_dir_diduse_space(ds->ds_dir, DD_USED_HEAD,

a9799022bd90b13722204e80112efaa5bf573099ck delta, -compressed, -uncompressed, tx);

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens dsl_dir_transfer_space(ds->ds_dir, -used - delta,

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens DD_USED_REFRSRV, DD_USED_HEAD, tx);

fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {

fa9e4066f08beec538e775443c5be79dd423fcabahrens dprintf_bp(bp, "putting on dead list: %s", "");

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick if (async) {

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick /*

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens bplist_append(&ds->ds_pending_deadlist, bp);

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick } else {

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsl_deadlist_insert(&ds->ds_deadlist, bp, tx);

b24ab6762772a3f6a89393947930c7fa61306783Jeff Bonwick }

a4611ede45b06d3d765fa70e98f9c5222d824853ahrens ASSERT3U(ds->ds_prev->ds_object, ==,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_prev_snap_obj);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT(dsl_dataset_phys(ds->ds_prev)->ds_num_children > 0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens /* if (bp->blk_birth > prev prev snap txg) prev unique += bs */

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds->ds_prev)->ds_next_snap_obj ==

a4611ede45b06d3d765fa70e98f9c5222d824853ahrens ds->ds_object && bp->blk_birth >

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_prev_snap_txg) {

a4611ede45b06d3d765fa70e98f9c5222d824853ahrens dmu_buf_will_dirty(ds->ds_prev->ds_dbuf, tx);

a4611ede45b06d3d765fa70e98f9c5222d824853ahrens mutex_enter(&ds->ds_prev->ds_lock);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds->ds_prev)->ds_unique_bytes += used;

a4611ede45b06d3d765fa70e98f9c5222d824853ahrens mutex_exit(&ds->ds_prev->ds_lock);

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

3f9d6ad73e45c6823b409f93b0c8d4f62861d2d5Lin Ling if (bp->blk_birth > ds->ds_dir->dd_origin_txg) {

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens dsl_dir_transfer_space(ds->ds_dir, used,

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens DD_USED_HEAD, DD_USED_SNAP, tx);

74e7dc986c89efca1f2e4451c7a572e05e4a6e4fMatthew Ahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&ds->ds_lock);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT3U(dsl_dataset_phys(ds)->ds_referenced_bytes, >=, used);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_referenced_bytes -= used;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT3U(dsl_dataset_phys(ds)->ds_compressed_bytes, >=, compressed);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_compressed_bytes -= compressed;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT3U(dsl_dataset_phys(ds)->ds_uncompressed_bytes, >=, uncompressed);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_uncompressed_bytes -= uncompressed;

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&ds->ds_lock);

cdb0ab79ea1af7b8fc339a04d4bf7426dc77ec4emaybee

cdb0ab79ea1af7b8fc339a04d4bf7426dc77ec4emaybee return (used);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockdsl_dataset_prev_snap_txg(dsl_dataset_t *ds)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

a2eea2e101e6a163a537dcc6d4e3c4da2a0ea5b2ahrens uint64_t trysnap = 0;

a2eea2e101e6a163a537dcc6d4e3c4da2a0ea5b2ahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds == NULL)

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens /*

a2eea2e101e6a163a537dcc6d4e3c4da2a0ea5b2ahrens if (ds->ds_trysnap_txg >

a2eea2e101e6a163a537dcc6d4e3c4da2a0ea5b2ahrens spa_last_synced_txg(ds->ds_dir->dd_pool->dp_spa))

a2eea2e101e6a163a537dcc6d4e3c4da2a0ea5b2ahrens trysnap = ds->ds_trysnap_txg;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs return (MAX(dsl_dataset_phys(ds)->ds_prev_snap_txg, trysnap));

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock}

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock

c7cd242109c82107ec2e50013369e92be9d77702George Wilsondsl_dataset_block_freeable(dsl_dataset_t *ds, const blkptr_t *bp,

c7cd242109c82107ec2e50013369e92be9d77702George Wilson uint64_t blk_birth)

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock{

43466aae47bfcd2ad9bf501faec8e75c08095e4fMax Grossman if (blk_birth <= dsl_dataset_prev_snap_txg(ds) ||

43466aae47bfcd2ad9bf501faec8e75c08095e4fMax Grossman (bp != NULL && BP_IS_HOLE(bp)))

c7cd242109c82107ec2e50013369e92be9d77702George Wilson return (B_FALSE);

c7cd242109c82107ec2e50013369e92be9d77702George Wilson

837b568b3a2559f8c9b9403f95104271a85d129eGeorge Wilson ddt_prefetch(dsl_dataset_get_spa(ds), bp);

c7cd242109c82107ec2e50013369e92be9d77702George Wilson

c7cd242109c82107ec2e50013369e92be9d77702George Wilson return (B_TRUE);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic void

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipekdsl_dataset_evict_sync(void *dbu)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs dsl_dataset_t *ds = dbu;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(ds->ds_owner == NULL);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens unique_remove(ds->ds_fsid_guid);

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek}

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipekstatic void

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipekdsl_dataset_evict_async(void *dbu)

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek{

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek dsl_dataset_t *ds = dbu;

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek ASSERT(ds->ds_owner == NULL);

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek ds->ds_dbuf = NULL;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrens if (ds->ds_objset != NULL)

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrens dmu_objset_evict(ds->ds_objset);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds->ds_prev) {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_rele(ds->ds_prev, ds);

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds->ds_prev = NULL;

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens bplist_destroy(&ds->ds_pending_deadlist);

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs if (ds->ds_deadlist.dl_os != NULL)

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsl_deadlist_close(&ds->ds_deadlist);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee if (ds->ds_dir)

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs dsl_dir_async_rele(ds->ds_dir, ds);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens ASSERT(!list_link_active(&ds->ds_synced_link));

fa9e4066f08beec538e775443c5be79dd423fcabahrens

03bad06fbb261fd4a7151a70dfeff2f5041cce1fJustin Gibbs list_destroy(&ds->ds_prop_cbs);

5ad820458efd0fdb914baff9c1447c22b819fa23nd mutex_destroy(&ds->ds_lock);

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens mutex_destroy(&ds->ds_opening_lock);

d2b3cbbd7f3a37bc7c01b526d3eb312acd070423Jorgen Lundman mutex_destroy(&ds->ds_sendstream_lock);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens refcount_destroy(&ds->ds_longholds);

c166b69d29138aed7a415fe7cef698e54c6ae945Paul Dagnelie rrw_destroy(&ds->ds_bp_rwlock);

5ad820458efd0fdb914baff9c1447c22b819fa23nd

fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_free(ds, sizeof (dsl_dataset_t));

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensdsl_dataset_get_snapname(dsl_dataset_t *ds)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dataset_phys_t *headphys;

fa9e4066f08beec538e775443c5be79dd423fcabahrens int err;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *headdbuf;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_pool_t *dp = ds->ds_dir->dd_pool;

fa9e4066f08beec538e775443c5be79dd423fcabahrens objset_t *mos = dp->dp_meta_objset;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds->ds_snapname[0])

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (0);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_next_snap_obj == 0)

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs err = dmu_bonus_hold(mos, dsl_dir_phys(ds->ds_dir)->dd_head_dataset_obj,

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock FTAG, &headdbuf);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0)

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);

fa9e4066f08beec538e775443c5be79dd423fcabahrens headphys = headdbuf->db_data;

fa9e4066f08beec538e775443c5be79dd423fcabahrens err = zap_value_search(dp->dp_meta_objset,

e7437265dc2a4920c197ed4337665539d358b22cahrens headphys->ds_snapnames_zapobj, ds->ds_object, 0, ds->ds_snapname);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(headdbuf, FTAG);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybeedsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, uint64_t *value)

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh{

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs uint64_t snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh matchtype_t mt;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh int err;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_CI_DATASET)

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh mt = MT_FIRST;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh else

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh mt = MT_EXACT;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee err = zap_lookup_norm(mos, snapobj, name, 8, 1,

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh value, mt, NULL, 0, NULL);

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh if (err == ENOTSUP && mt == MT_FIRST)

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee err = zap_lookup(mos, snapobj, name, 8, 1, value);

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh return (err);

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh}

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinekdsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek boolean_t adj_cnt)

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh{

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs uint64_t snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh matchtype_t mt;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh int err;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

71eb05381846ad14a2087631474e832d0f316654Chris Kirby dsl_dir_snap_cmtime_update(ds->ds_dir);

71eb05381846ad14a2087631474e832d0f316654Chris Kirby

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_CI_DATASET)

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh mt = MT_FIRST;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh else

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh mt = MT_EXACT;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee err = zap_remove_norm(mos, snapobj, name, mt, tx);

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh if (err == ENOTSUP && mt == MT_FIRST)

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee err = zap_remove(mos, snapobj, name, tx);

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (err == 0 && adj_cnt)

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek dsl_fs_ss_count_adjust(ds->ds_dir, -1,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek DD_FIELD_SNAPSHOT_COUNT, tx);

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh return (err);

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh}

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

e57a022b8f718889ffa92adbde47a8f08abcdb25Justin T. Gibbsdsl_dataset_try_add_ref(dsl_pool_t *dp, dsl_dataset_t *ds, void *tag)

e57a022b8f718889ffa92adbde47a8f08abcdb25Justin T. Gibbs{

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs dmu_buf_t *dbuf = ds->ds_dbuf;

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs boolean_t result = B_FALSE;

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs if (dbuf != NULL && dmu_buf_try_add_ref(dbuf, dp->dp_meta_objset,

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs ds->ds_object, DMU_BONUS_BLKID, tag)) {

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs if (ds == dmu_buf_get_user(dbuf))

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs result = B_TRUE;

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs else

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs dmu_buf_rele(dbuf, tag);

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs }

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs

9d47dec0481d8cd53b2c1053c96bfa3f78357d6aJustin T. Gibbs return (result);

e57a022b8f718889ffa92adbde47a8f08abcdb25Justin T. Gibbs}

e57a022b8f718889ffa92adbde47a8f08abcdb25Justin T. Gibbs

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_hold_obj(dsl_pool_t *dp, uint64_t dsobj, void *tag,

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee dsl_dataset_t **dsp)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

fa9e4066f08beec538e775443c5be79dd423fcabahrens objset_t *mos = dp->dp_meta_objset;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *dbuf;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dataset_t *ds;

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock int err;

a7f53a5629374ca27c5696ace9a1946c2ca050f4Chris Kirby dmu_object_info_t doi;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(dsl_pool_config_held(dp));

fa9e4066f08beec538e775443c5be79dd423fcabahrens

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock err = dmu_bonus_hold(mos, dsobj, tag, &dbuf);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0)

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);

a7f53a5629374ca27c5696ace9a1946c2ca050f4Chris Kirby

a7f53a5629374ca27c5696ace9a1946c2ca050f4Chris Kirby /* Make sure dsobj has the correct object type. */

a7f53a5629374ca27c5696ace9a1946c2ca050f4Chris Kirby dmu_object_info_from_db(dbuf, &doi);

2acef22db7808606888f8f92715629ff3ba555b9Matthew Ahrens if (doi.doi_bonus_type != DMU_OT_DSL_DATASET) {

b287be1ba86043996f49b1cc34c80cc620f9b841Will Andrews dmu_buf_rele(dbuf, tag);

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(EINVAL));

b287be1ba86043996f49b1cc34c80cc620f9b841Will Andrews }

a7f53a5629374ca27c5696ace9a1946c2ca050f4Chris Kirby

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds = dmu_buf_get_user(dbuf);

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds == NULL) {

d5285cae913f4e01ffa0e6693a6d8ef1fbea30baGeorge Wilson dsl_dataset_t *winner = NULL;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds = kmem_zalloc(sizeof (dsl_dataset_t), KM_SLEEP);

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds->ds_dbuf = dbuf;

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds->ds_object = dsobj;

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs ds->ds_is_snapshot = dsl_dataset_phys(ds)->ds_num_children != 0;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

5ad820458efd0fdb914baff9c1447c22b819fa23nd mutex_init(&ds->ds_lock, NULL, MUTEX_DEFAULT, NULL);

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens mutex_init(&ds->ds_opening_lock, NULL, MUTEX_DEFAULT, NULL);

4e3c9f4489a18514e5e8caeb91d4e6db07c98415Bill Pijewski mutex_init(&ds->ds_sendstream_lock, NULL, MUTEX_DEFAULT, NULL);

c166b69d29138aed7a415fe7cef698e54c6ae945Paul Dagnelie rrw_init(&ds->ds_bp_rwlock, B_FALSE);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens refcount_create(&ds->ds_longholds);

5ad820458efd0fdb914baff9c1447c22b819fa23nd

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens bplist_create(&ds->ds_pending_deadlist);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsl_deadlist_open(&ds->ds_deadlist,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs mos, dsl_dataset_phys(ds)->ds_deadlist_obj);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens

4e3c9f4489a18514e5e8caeb91d4e6db07c98415Bill Pijewski list_create(&ds->ds_sendstreams, sizeof (dmu_sendarg_t),

4e3c9f4489a18514e5e8caeb91d4e6db07c98415Bill Pijewski offsetof(dmu_sendarg_t, dsa_link));

4e3c9f4489a18514e5e8caeb91d4e6db07c98415Bill Pijewski

03bad06fbb261fd4a7151a70dfeff2f5041cce1fJustin Gibbs list_create(&ds->ds_prop_cbs, sizeof (dsl_prop_cb_record_t),

03bad06fbb261fd4a7151a70dfeff2f5041cce1fJustin Gibbs offsetof(dsl_prop_cb_record_t, cbr_ds_node));

03bad06fbb261fd4a7151a70dfeff2f5041cce1fJustin Gibbs

b515258426fed6c7311fd3f1dea697cfbd4085c6Matthew Ahrens if (doi.doi_type == DMU_OTN_ZAP_METADATA) {

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens if (!(spa_feature_table[f].fi_flags &

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens ZFEATURE_FLAG_PER_DATASET))

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens continue;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens err = zap_contains(mos, dsobj,

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens spa_feature_table[f].fi_guid);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens if (err == 0) {

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens ds->ds_feature_inuse[f] = B_TRUE;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens } else {

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens ASSERT3U(err, ==, ENOENT);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens err = 0;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens }

e1f3c208abda53769a6531bb1141618555273460Justin T. Gibbs }

b515258426fed6c7311fd3f1dea697cfbd4085c6Matthew Ahrens }

b515258426fed6c7311fd3f1dea697cfbd4085c6Matthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens err = dsl_dir_hold_obj(dp,

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens dsl_dataset_phys(ds)->ds_dir_obj, NULL, ds, &ds->ds_dir);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0) {

5ad820458efd0fdb914baff9c1447c22b819fa23nd mutex_destroy(&ds->ds_lock);

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens mutex_destroy(&ds->ds_opening_lock);

d2b3cbbd7f3a37bc7c01b526d3eb312acd070423Jorgen Lundman mutex_destroy(&ds->ds_sendstream_lock);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens refcount_destroy(&ds->ds_longholds);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens bplist_destroy(&ds->ds_pending_deadlist);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsl_deadlist_close(&ds->ds_deadlist);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock kmem_free(ds, sizeof (dsl_dataset_t));

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(dbuf, tag);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock }

fa9e4066f08beec538e775443c5be79dd423fcabahrens

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs if (!ds->ds_is_snapshot) {

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds->ds_snapname[0] = '\0';

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_prev_snap_obj != 0) {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens err = dsl_dataset_hold_obj(dp,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_prev_snap_obj,

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee ds, &ds->ds_prev);

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens if (doi.doi_type == DMU_OTN_ZAP_METADATA) {

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens int zaperr = zap_lookup(mos, ds->ds_object,

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens DS_FIELD_BOOKMARK_NAMES,

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens sizeof (ds->ds_bookmarks), 1,

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens &ds->ds_bookmarks);

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens if (zaperr != ENOENT)

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens VERIFY0(zaperr);

78f171005391b928aaf1642b3206c534ed644332Matthew Ahrens }

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby } else {

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby if (zfs_flags & ZFS_DEBUG_SNAPNAMES)

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby err = dsl_dataset_get_snapname(ds);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (err == 0 &&

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_userrefs_obj != 0) {

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby err = zap_count(

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby ds->ds_dir->dd_pool->dp_meta_objset,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_userrefs_obj,

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby &ds->ds_userrefs);

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs if (err == 0 && !ds->ds_is_snapshot) {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens err = dsl_prop_get_int_ds(ds,

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens zfs_prop_to_name(ZFS_PROP_REFRESERVATION),

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens &ds->ds_reserved);

cb625fb575ce78c4928c387e0d3bff0c5be9dc07ck if (err == 0) {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens err = dsl_prop_get_int_ds(ds,

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens zfs_prop_to_name(ZFS_PROP_REFQUOTA),

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens &ds->ds_quota);

cb625fb575ce78c4928c387e0d3bff0c5be9dc07ck }

cb625fb575ce78c4928c387e0d3bff0c5be9dc07ck } else {

cb625fb575ce78c4928c387e0d3bff0c5be9dc07ck ds->ds_reserved = ds->ds_quota = 0;

cb625fb575ce78c4928c387e0d3bff0c5be9dc07ck }

cb625fb575ce78c4928c387e0d3bff0c5be9dc07ck

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek dmu_buf_init_user(&ds->ds_dbu, dsl_dataset_evict_sync,

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek dsl_dataset_evict_async, &ds->ds_dbuf);

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs if (err == 0)

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs winner = dmu_buf_set_user_ie(dbuf, &ds->ds_dbu);

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs if (err != 0 || winner != NULL) {

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens bplist_destroy(&ds->ds_pending_deadlist);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsl_deadlist_close(&ds->ds_deadlist);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee if (ds->ds_prev)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_rele(ds->ds_prev, ds);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dir_rele(ds->ds_dir, ds);

5ad820458efd0fdb914baff9c1447c22b819fa23nd mutex_destroy(&ds->ds_lock);

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens mutex_destroy(&ds->ds_opening_lock);

d2b3cbbd7f3a37bc7c01b526d3eb312acd070423Jorgen Lundman mutex_destroy(&ds->ds_sendstream_lock);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens refcount_destroy(&ds->ds_longholds);

fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_free(ds, sizeof (dsl_dataset_t));

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0) {

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(dbuf, tag);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock }

fa9e4066f08beec538e775443c5be79dd423fcabahrens ds = winner;

fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {

91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens ds->ds_fsid_guid =

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs unique_insert(dsl_dataset_phys(ds)->ds_fsid_guid);

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek if (ds->ds_fsid_guid !=

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek dsl_dataset_phys(ds)->ds_fsid_guid) {

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek zfs_dbgmsg("ds_fsid_guid changed from "

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek "%llx to %llx for pool %s dataset id %llu",

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek (long long)

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek dsl_dataset_phys(ds)->ds_fsid_guid,

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek (long long)ds->ds_fsid_guid,

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek spa_name(dp->dp_spa),

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek dsobj);

40510e8eba18690b9a9843b26393725eeb0f1dacJosef 'Jeff' Sipek }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT3P(ds->ds_dbuf, ==, dbuf);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT3P(dsl_dataset_phys(ds), ==, dbuf->db_data);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT(dsl_dataset_phys(ds)->ds_prev_snap_obj != 0 ||

afc6333a176879f0ea62345548438d6a5168b0c4ahrens spa_version(dp->dp_spa) < SPA_VERSION_ORIGIN ||

84db2a68825c1a672f664432101f6f0b443679e3ahrens dp->dp_origin_snap == NULL || ds == dp->dp_origin_snap);

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock *dsp = ds;

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_hold(dsl_pool_t *dp, const char *name,

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrens void *tag, dsl_dataset_t **dsp)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dir_t *dd;

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee const char *snapname;

fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t obj;

fa9e4066f08beec538e775443c5be79dd423fcabahrens int err = 0;

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie dsl_dataset_t *ds;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens err = dsl_dir_hold(dp, name, FTAG, &dd, &snapname);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0)

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock return (err);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(dsl_pool_config_held(dp));

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs obj = dsl_dir_phys(dd)->dd_head_dataset_obj;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (obj != 0)

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie err = dsl_dataset_hold_obj(dp, obj, tag, &ds);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee else

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens err = SET_ERROR(ENOENT);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee /* we may be looking for a snapshot */

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee if (err == 0 && snapname != NULL) {

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie dsl_dataset_t *snap_ds;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee if (*snapname++ != '@') {

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie dsl_dataset_rele(ds, tag);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dir_rele(dd, FTAG);

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(ENOENT));

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee dprintf("looking for snapshot '%s'\n", snapname);

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie err = dsl_dataset_snap_lookup(ds, snapname, &obj);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee if (err == 0)

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie err = dsl_dataset_hold_obj(dp, obj, tag, &snap_ds);

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie dsl_dataset_rele(ds, tag);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err == 0) {

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie mutex_enter(&snap_ds->ds_lock);

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie if (snap_ds->ds_snapname[0] == 0)

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie (void) strlcpy(snap_ds->ds_snapname, snapname,

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie sizeof (snap_ds->ds_snapname));

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie mutex_exit(&snap_ds->ds_lock);

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie ds = snap_ds;

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie if (err == 0)

a2cdcdd260232b58202b11a9bfc0103c9449ed52Paul Dagnelie *dsp = ds;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dir_rele(dd, FTAG);

fa9e4066f08beec538e775443c5be79dd423fcabahrens return (err);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_own_obj(dsl_pool_t *dp, uint64_t dsobj,

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens void *tag, dsl_dataset_t **dsp)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens int err = dsl_dataset_hold_obj(dp, dsobj, tag, dsp);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return (err);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (!dsl_dataset_tryown(*dsp, tag)) {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_rele(*dsp, tag);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens *dsp = NULL;

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(EBUSY));

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens }

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return (0);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_own(dsl_pool_t *dp, const char *name,

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrens void *tag, dsl_dataset_t **dsp)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens int err = dsl_dataset_hold(dp, name, tag, dsp);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != 0)

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee return (err);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (!dsl_dataset_tryown(*dsp, tag)) {

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrens dsl_dataset_rele(*dsp, tag);

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(EBUSY));

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee }

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_long_hold(dsl_dataset_t *ds, void *tag)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool));

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens (void) refcount_add(&ds->ds_longholds, tag);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_long_rele(dsl_dataset_t *ds, void *tag)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens (void) refcount_remove(&ds->ds_longholds, tag);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_long_held(dsl_dataset_t *ds)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return (!refcount_is_zero(&ds->ds_longholds));

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensdsl_dataset_name(dsl_dataset_t *ds, char *name)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds == NULL) {

fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) strcpy(name, "mos");

fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dir_name(ds->ds_dir, name);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(dsl_dataset_get_snapname(ds));

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ds->ds_snapname[0]) {

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens VERIFY3U(strlcat(name, "@", ZFS_MAX_DATASET_NAME_LEN),

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens <, ZFS_MAX_DATASET_NAME_LEN);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee /*

fa9e4066f08beec538e775443c5be79dd423fcabahrens if (!MUTEX_HELD(&ds->ds_lock)) {

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_enter(&ds->ds_lock);

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens VERIFY3U(strlcat(name, ds->ds_snapname,

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens ZFS_MAX_DATASET_NAME_LEN), <,

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens ZFS_MAX_DATASET_NAME_LEN);

fa9e4066f08beec538e775443c5be79dd423fcabahrens mutex_exit(&ds->ds_lock);

fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens VERIFY3U(strlcat(name, ds->ds_snapname,

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens ZFS_MAX_DATASET_NAME_LEN), <,

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens ZFS_MAX_DATASET_NAME_LEN);

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrensdsl_dataset_namelen(dsl_dataset_t *ds)

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens{

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens VERIFY0(dsl_dataset_get_snapname(ds));

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens mutex_enter(&ds->ds_lock);

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens int len = dsl_dir_namelen(ds->ds_dir) + 1 + strlen(ds->ds_snapname);

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens mutex_exit(&ds->ds_lock);

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens return (len);

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens}

9adfa60d484ce2435f5af77cc99dcd4e692b6660Matthew Ahrens

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybeedsl_dataset_rele(dsl_dataset_t *ds, void *tag)

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dmu_buf_rele(ds->ds_dbuf, tag);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee}

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrensdsl_dataset_disown(dsl_dataset_t *ds, void *tag)

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee{

d808a4fc6ac40e878a28e96f1ad7dd2ec439bfbfJustin T. Gibbs ASSERT3P(ds->ds_owner, ==, tag);

d808a4fc6ac40e878a28e96f1ad7dd2ec439bfbfJustin T. Gibbs ASSERT(ds->ds_dbuf != NULL);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens mutex_enter(&ds->ds_lock);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee ds->ds_owner = NULL;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens mutex_exit(&ds->ds_lock);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_long_rele(ds, tag);

d808a4fc6ac40e878a28e96f1ad7dd2ec439bfbfJustin T. Gibbs dsl_dataset_rele(ds, tag);

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens}

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_tryown(dsl_dataset_t *ds, void *tag)

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens{

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee boolean_t gotit = FALSE;

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool));

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens mutex_enter(&ds->ds_lock);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (ds->ds_owner == NULL && !DS_IS_INCONSISTENT(ds)) {

503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrens ds->ds_owner = tag;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_long_hold(ds, tag);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee gotit = TRUE;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens }

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens mutex_exit(&ds->ds_lock);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee return (gotit);

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee}

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrensdsl_dataset_has_owner(dsl_dataset_t *ds)

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens{

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens boolean_t rv;

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens mutex_enter(&ds->ds_lock);

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens rv = (ds->ds_owner != NULL);

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens mutex_exit(&ds->ds_lock);

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens return (rv);

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens}

9c3fd1216fa7fb02cfbc78a2518a686d54b48ab8Matthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrensstatic void

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrensdsl_dataset_activate_feature(uint64_t dsobj, spa_feature_t f, dmu_tx_t *tx)

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens{

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens spa_t *spa = dmu_tx_pool(tx)->dp_spa;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens objset_t *mos = dmu_tx_pool(tx)->dp_meta_objset;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens uint64_t zero = 0;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens VERIFY(spa_feature_table[f].fi_flags & ZFEATURE_FLAG_PER_DATASET);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens spa_feature_incr(spa, f, tx);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens dmu_object_zapify(mos, dsobj, DMU_OT_DSL_DATASET, tx);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens VERIFY0(zap_add(mos, dsobj, spa_feature_table[f].fi_guid,

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens sizeof (zero), 1, &zero, tx));

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens}

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrensdsl_dataset_deactivate_feature(uint64_t dsobj, spa_feature_t f, dmu_tx_t *tx)

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens{

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens spa_t *spa = dmu_tx_pool(tx)->dp_spa;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens objset_t *mos = dmu_tx_pool(tx)->dp_meta_objset;

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens VERIFY(spa_feature_table[f].fi_flags & ZFEATURE_FLAG_PER_DATASET);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens VERIFY0(zap_remove(mos, dsobj, spa_feature_table[f].fi_guid, tx));

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens spa_feature_decr(spa, f, tx);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens}

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens

088f389458728c464569a5506b58070254fa4f7dahrensdsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh uint64_t flags, dmu_tx_t *tx)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens dsl_pool_t *dp = dd->dd_pool;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *dbuf;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dataset_phys_t *dsphys;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens uint64_t dsobj;

fa9e4066f08beec538e775443c5be79dd423fcabahrens objset_t *mos = dp->dp_meta_objset;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

088f389458728c464569a5506b58070254fa4f7dahrens if (origin == NULL)

088f389458728c464569a5506b58070254fa4f7dahrens origin = dp->dp_origin_snap;

088f389458728c464569a5506b58070254fa4f7dahrens

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens ASSERT(origin == NULL || origin->ds_dir->dd_pool == dp);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT(origin == NULL || dsl_dataset_phys(origin)->ds_num_children > 0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens ASSERT(dmu_tx_is_syncing(tx));

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT(dsl_dir_phys(dd)->dd_head_dataset_obj == 0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

1649cd4b1641110b549d9f70a902cafc2007bd77tabriz dsobj = dmu_object_alloc(mos, DMU_OT_DSL_DATASET, 0,

1649cd4b1641110b549d9f70a902cafc2007bd77tabriz DMU_OT_DSL_DATASET, sizeof (dsl_dataset_phys_t), tx);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(dmu_bonus_hold(mos, dsobj, FTAG, &dbuf));

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_will_dirty(dbuf, tx);

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys = dbuf->db_data;

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee bzero(dsphys, sizeof (dsl_dataset_phys_t));

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_dir_obj = dd->dd_object;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh dsphys->ds_flags = flags;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_fsid_guid = unique_create();

fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) random_get_pseudo_bytes((void*)&dsphys->ds_guid,

fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (dsphys->ds_guid));

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_snapnames_zapobj =

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh zap_create_norm(mos, U8_TEXTPREP_TOUPPER, DMU_OT_DSL_DS_SNAP_MAP,

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh DMU_OT_NONE, 0, tx);

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_creation_time = gethrestime_sec();

088f389458728c464569a5506b58070254fa4f7dahrens dsphys->ds_creation_txg = tx->tx_txg == TXG_INITIAL ? 1 : tx->tx_txg;

a9799022bd90b13722204e80112efaa5bf573099ck

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens if (origin == NULL) {

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsphys->ds_deadlist_obj = dsl_deadlist_alloc(mos, tx);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens } else {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_t *ohds; /* head of the origin snapshot */

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens dsphys->ds_prev_snap_obj = origin->ds_object;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_prev_snap_txg =

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_creation_txg;

ad135b5d644628e791c3188a6ecbd9c257961ef8Christopher Siden dsphys->ds_referenced_bytes =

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_referenced_bytes;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_compressed_bytes =

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_compressed_bytes;

fa9e4066f08beec538e775443c5be79dd423fcabahrens dsphys->ds_uncompressed_bytes =

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_uncompressed_bytes;

c166b69d29138aed7a415fe7cef698e54c6ae945Paul Dagnelie rrw_enter(&origin->ds_bp_rwlock, RW_READER, FTAG);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsphys->ds_bp = dsl_dataset_phys(origin)->ds_bp;

c166b69d29138aed7a415fe7cef698e54c6ae945Paul Dagnelie rrw_exit(&origin->ds_bp_rwlock, FTAG);

42fcb65ea4f2c6f8cc5a3c6142a486cb49871fd2Matthew Ahrens

42fcb65ea4f2c6f8cc5a3c6142a486cb49871fd2Matthew Ahrens /*

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsphys->ds_flags |= dsl_dataset_phys(origin)->ds_flags &

42fcb65ea4f2c6f8cc5a3c6142a486cb49871fd2Matthew Ahrens (DS_FLAG_INCONSISTENT | DS_FLAG_CI_DATASET);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens for (spa_feature_t f = 0; f < SPA_FEATURES; f++) {

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens if (origin->ds_feature_inuse[f])

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens dsl_dataset_activate_feature(dsobj, f, tx);

ca0cc3918a1789fa839194af2a9245f801a06b1aMatthew Ahrens }

b515258426fed6c7311fd3f1dea697cfbd4085c6Matthew Ahrens

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens dmu_buf_will_dirty(origin->ds_dbuf, tx);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_num_children++;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(dsl_dataset_hold_obj(dp,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dir_phys(origin->ds_dir)->dd_head_dataset_obj,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs FTAG, &ohds));

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsphys->ds_deadlist_obj = dsl_deadlist_clone(&ohds->ds_deadlist,

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsphys->ds_prev_snap_txg, dsphys->ds_prev_snap_obj, tx);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dsl_dataset_rele(ohds, FTAG);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens

088f389458728c464569a5506b58070254fa4f7dahrens if (spa_version(dp->dp_spa) >= SPA_VERSION_NEXT_CLONES) {

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(origin)->ds_next_clones_obj == 0) {

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_next_clones_obj =

088f389458728c464569a5506b58070254fa4f7dahrens zap_create(mos,

088f389458728c464569a5506b58070254fa4f7dahrens DMU_OT_NEXT_CLONES, DMU_OT_NONE, 0, tx);

088f389458728c464569a5506b58070254fa4f7dahrens }

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(zap_add_int(mos,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(origin)->ds_next_clones_obj,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsobj, tx));

088f389458728c464569a5506b58070254fa4f7dahrens }

088f389458728c464569a5506b58070254fa4f7dahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_will_dirty(dd->dd_dbuf, tx);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dir_phys(dd)->dd_origin_obj = origin->ds_object;

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens if (spa_version(dp->dp_spa) >= SPA_VERSION_DIR_CLONES) {

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dir_phys(origin->ds_dir)->dd_clones == 0) {

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens dmu_buf_will_dirty(origin->ds_dir->dd_dbuf, tx);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dir_phys(origin->ds_dir)->dd_clones =

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens zap_create(mos,

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens DMU_OT_DSL_CLONES, DMU_OT_NONE, 0, tx);

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens }

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(zap_add_int(mos,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dir_phys(origin->ds_dir)->dd_clones,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsobj, tx));

cde58dbc6a23d4d38db7c8866312be83221c765fMatthew Ahrens }

fa9e4066f08beec538e775443c5be79dd423fcabahrens }

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh if (spa_version(dp->dp_spa) >= SPA_VERSION_UNIQUE_ACCURATE)

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh dsphys->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh

ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock dmu_buf_rele(dbuf, FTAG);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_will_dirty(dd->dd_dbuf, tx);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dir_phys(dd)->dd_head_dataset_obj = dsobj;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens return (dsobj);

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens}

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensstatic void

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_zero_zil(dsl_dataset_t *ds, dmu_tx_t *tx)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens objset_t *os;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(dmu_objset_from_ds(ds, &os));

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon if (bcmp(&os->os_zil_header, &zero_zil, sizeof (zero_zil)) != 0) {

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon dsl_pool_t *dp = ds->ds_dir->dd_pool;

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon zio_t *zio;

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon bzero(&os->os_zil_header, sizeof (os->os_zil_header));

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon zio = zio_root(dp->dp_spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon dsl_dataset_sync(ds, zio, tx);

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon VERIFY0(zio_wait(zio));

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon /* dsl_dataset_sync_done will drop this reference. */

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon dmu_buf_add_ref(ds->ds_dbuf, ds);

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon dsl_dataset_sync_done(ds, tx);

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon }

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timhdsl_dataset_create_sync(dsl_dir_t *pdd, const char *lastname,

ab04eb8ef60d9dc9614d6cccffc474f24ca1d162timh dsl_dataset_t *origin, uint64_t flags, cred_t *cr, dmu_tx_t *tx)

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens{

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens dsl_pool_t *dp = pdd->dd_pool;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens uint64_t dsobj, ddobj;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens dsl_dir_t *dd;

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(dmu_tx_is_syncing(tx));

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens ASSERT(lastname[0] != '@');

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

088f389458728c464569a5506b58070254fa4f7dahrens ddobj = dsl_dir_create_sync(dp, pdd, lastname, tx);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(dsl_dir_hold_obj(dp, ddobj, lastname, FTAG, &dd));

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsobj = dsl_dataset_create_sync_dd(dd, origin,

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens flags & ~DS_CREATE_FLAG_NODIRTY, tx);

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens dsl_deleg_set_create_perms(dd, tx, cr);

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek /*

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (spa_feature_is_active(dp->dp_spa, SPA_FEATURE_FS_SS_LIMIT)) {

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek uint64_t cnt = 0;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek objset_t *os = dd->dd_pool->dp_meta_objset;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek dsl_dir_zapify(dd, tx);

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek VERIFY0(zap_add(os, dd->dd_object, DD_FIELD_FILESYSTEM_COUNT,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek sizeof (cnt), 1, &cnt, tx));

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek VERIFY0(zap_add(os, dd->dd_object, DD_FIELD_SNAPSHOT_COUNT,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek sizeof (cnt), 1, &cnt, tx));

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek }

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dir_rele(dd, FTAG);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

feaa74e41c407fe56e66a47e097c2842d4f65b9fMark Maybee /*

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (origin != NULL && !(flags & DS_CREATE_FLAG_NODIRTY)) {

feaa74e41c407fe56e66a47e097c2842d4f65b9fMark Maybee dsl_dataset_t *ds;

feaa74e41c407fe56e66a47e097c2842d4f65b9fMark Maybee

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds));

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_zero_zil(ds, tx);

feaa74e41c407fe56e66a47e097c2842d4f65b9fMark Maybee dsl_dataset_rele(ds, FTAG);

feaa74e41c407fe56e66a47e097c2842d4f65b9fMark Maybee }

feaa74e41c407fe56e66a47e097c2842d4f65b9fMark Maybee

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens return (dsobj);

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_recalc_head_uniq(dsl_dataset_t *ds)

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens uint64_t mrs_used;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens uint64_t dlused, dlcomp, dluncomp;

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens

bc9014e6a81272073b9854d9f65dd59e18d18c35Justin Gibbs ASSERT(!ds->ds_is_snapshot);

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_prev_snap_obj != 0)

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs mrs_used = dsl_dataset_phys(ds->ds_prev)->ds_referenced_bytes;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens else

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens mrs_used = 0;

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_deadlist_space(&ds->ds_deadlist, &dlused, &dlcomp, &dluncomp);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT3U(dlused, <=, mrs_used);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_unique_bytes =

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_referenced_bytes - (mrs_used - dlused);

19b94df933188a15d4f0d6c568f0bab3f127892eMatthew Ahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (spa_version(ds->ds_dir->dd_pool->dp_spa) >=

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens SPA_VERSION_UNIQUE_ACCURATE)

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs dsl_dataset_phys(ds)->ds_flags |= DS_FLAG_UNIQUE_ACCURATE;

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dmu_tx_t *tx)

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens uint64_t count;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens int err;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT(dsl_dataset_phys(ds)->ds_num_children >= 2);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs err = zap_remove_int(mos, dsl_dataset_phys(ds)->ds_next_clones_obj,

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs obj, tx);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens /*

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (err != ENOENT)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens VERIFY0(err);

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT0(zap_count(mos, dsl_dataset_phys(ds)->ds_next_clones_obj,

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens &count));

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs ASSERT3U(count, <=, dsl_dataset_phys(ds)->ds_num_children - 2);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensblkptr_t *

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_get_blkptr(dsl_dataset_t *ds)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs return (&dsl_dataset_phys(ds)->ds_bp);

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby}

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensspa_t *

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_get_spa(dsl_dataset_t *ds)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return (ds->ds_dir->dd_pool->dp_spa);

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby}

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_pool_t *dp;

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (ds == NULL) /* this is the meta-objset */

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return;

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(ds->ds_objset != NULL);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_next_snap_obj != 0)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens panic("dirtying snapshot!");

fa9e4066f08beec538e775443c5be79dd423fcabahrens

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon /* Must not dirty a dataset in the same txg where it got snapshotted. */

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon ASSERT3U(tx->tx_txg, >, dsl_dataset_phys(ds)->ds_prev_snap_txg);

ce636f8b38e8c9ff484e880d9abb27251a882860Matthew Ahrens

bfaed0b91e57062c38bc16b4f89db3c8f0052a9bAndriy Gapon dp = ds->ds_dir->dd_pool;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (txg_list_add(&dp->dp_dirty_datasets, ds, tx->tx_txg)) {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens /* up the hold count until we can be written out */

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dmu_buf_add_ref(ds->ds_dbuf, ds);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens }

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrensdsl_dataset_is_dirty(dsl_dataset_t *ds)

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens{

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens for (int t = 0; t < TXG_SIZE; t++) {

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens if (txg_list_member(&ds->ds_dir->dd_pool->dp_dirty_datasets,

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens ds, t))

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens return (B_TRUE);

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens }

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens return (B_FALSE);

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens}

2e2c135528b3edfe9aaf67d1f004dc0202fa1a54Matthew Ahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic int

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, dmu_tx_t *tx)

fa9e4066f08beec538e775443c5be79dd423fcabahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens uint64_t asize;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (!dmu_tx_is_syncing(tx))

88b7b0f29b20b808b9e06071885b1d6a3ddb6328Matthew Ahrens return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

e19302335c33c8c6e0b0b5e426fc1f6352c84b5dbonwick /*

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ASSERT(ds->ds_reserved == 0 || DS_UNIQUE_IS_ACCURATE(ds));

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs asize = MIN(dsl_dataset_phys(ds)->ds_unique_bytes, ds->ds_reserved);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (asize > dsl_dir_space_available(ds->ds_dir, NULL, 0, TRUE))

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(ENOSPC));

e19302335c33c8c6e0b0b5e426fc1f6352c84b5dbonwick

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens /*

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (asize > 0)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dir_willuse_space(ds->ds_dir, asize, tx);

3cb34c601f3ef3016f638574f5982e80c3735c71ahrens

e19302335c33c8c6e0b0b5e426fc1f6352c84b5dbonwick return (0);

e19302335c33c8c6e0b0b5e426fc1f6352c84b5dbonwick}

e19302335c33c8c6e0b0b5e426fc1f6352c84b5dbonwick

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrenstypedef struct dsl_dataset_snapshot_arg {

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens nvlist_t *ddsa_snaps;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens nvlist_t *ddsa_props;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens nvlist_t *ddsa_errors;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek cred_t *ddsa_cr;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens} dsl_dataset_snapshot_arg_t;

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr)

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens int error;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens uint64_t value;

fa9e4066f08beec538e775443c5be79dd423fcabahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens ds->ds_trysnap_txg = tx->tx_txg;

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (!dmu_tx_is_syncing(tx))

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby return (0);

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens /*

c1379625401dfbe1c39b79136dd384a571d47fdeJustin T. Gibbs if (dsl_dataset_phys(ds)->ds_prev_snap_txg >= tx->tx_txg)

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(EAGAIN));

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens /*

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens error = dsl_dataset_snap_lookup(ds, snapname, &value);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (error == 0)

be6fd75a69ae679453d9cda5bff3326111e6d1caMatthew Ahrens return (SET_ERROR(EEXIST));

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (error != ENOENT)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return (error);

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

ca48f36f20f6098ceb19d5b084b6b3d4b8eca9faKeith M Wesolowski /*

ca48f36f20f6098ceb19d5b084b6b3d4b8eca9faKeith M Wesolowski if (!recv && DS_IS_INCONSISTENT(ds))

ca48f36f20f6098ceb19d5b084b6b3d4b8eca9faKeith M Wesolowski return (SET_ERROR(EBUSY));

ca48f36f20f6098ceb19d5b084b6b3d4b8eca9faKeith M Wesolowski

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek /*

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (cnt != 0 && cr != NULL) {

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek error = dsl_fs_ss_limit_check(ds->ds_dir, cnt,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek ZFS_PROP_SNAPSHOT_LIMIT, NULL, cr);

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (error != 0)

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek return (error);

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek }

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens error = dsl_dataset_snapshot_reserve_space(ds, tx);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens if (error != 0)

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens return (error);

842727c2f41f01b380de4f5e787d905702870f23Chris Kirby

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens return (0);

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens}

1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensstatic int

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrensdsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx)

745cd3c5371d020efae7a911c58c526aa1fd0dbamaybee{

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_dataset_snapshot_arg_t *ddsa = arg;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens dsl_pool_t *dp = dmu_tx_pool(tx);

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens nvpair_t *pair;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens int rv = 0;

3b2aab18808792cbd248a12f1edf139b89833c13Matthew Ahrens

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek /*

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (dmu_tx_is_syncing(tx)) {

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek nvlist_t *cnt_track = NULL;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek cnt_track = fnvlist_alloc();

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek /* Rollup aggregated counts into the cnt_track list */

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek for (pair = nvlist_next_nvpair(ddsa->ddsa_snaps, NULL);

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek pair != NULL;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek pair = nvlist_next_nvpair(ddsa->ddsa_snaps, pair)) {

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek char *pdelim;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek uint64_t val;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek char nm[MAXPATHLEN];

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek (void) strlcpy(nm, nvpair_name(pair), sizeof (nm));

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek pdelim = strchr(nm, '@');

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (pdelim == NULL)

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek continue;

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek *pdelim = '\0';

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek do {

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek if (nvlist_lookup_uint64(cnt_track, nm,

a2afb611b30628fb74ad9eade4ae465f9031e262Jerry Jelinek &val) == 0) {