spa_impl.h revision 99653d4ee642c6528e88224f12409a5f23060994
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_SPA_IMPL_H
#define _SYS_SPA_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/spa.h>
#include <sys/vdev.h>
#include <sys/metaslab.h>
#include <sys/dmu.h>
#include <sys/dsl_pool.h>
#include <sys/uberblock_impl.h>
#include <sys/zfs_context.h>
#include <sys/avl.h>
#include <sys/refcount.h>
#include <sys/bplist.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct spa_config_lock {
kmutex_t scl_lock;
refcount_t scl_count;
kthread_t *scl_writer;
kcondvar_t scl_cv;
} spa_config_lock_t;
typedef struct spa_error_entry {
zbookmark_t se_bookmark;
char *se_name;
avl_node_t se_avl;
} spa_error_entry_t;
struct spa {
/*
* Fields protected by spa_namespace_lock.
*/
char *spa_name; /* pool name */
avl_node_t spa_avl; /* node in spa_namespace_avl */
nvlist_t *spa_config; /* last synced config */
nvlist_t *spa_config_syncing; /* currently syncing config */
uint64_t spa_config_txg; /* txg of last config change */
kmutex_t spa_config_cache_lock; /* for spa_config RW_READER */
int spa_sync_pass; /* iterate-to-convergence */
int spa_state; /* pool state */
int spa_inject_ref; /* injection references */
uint8_t spa_traverse_wanted; /* traverse lock wanted */
uint8_t spa_sync_on; /* sync threads are running */
spa_load_state_t spa_load_state; /* current load operation */
taskq_t *spa_zio_issue_taskq[ZIO_TYPES];
taskq_t *spa_zio_intr_taskq[ZIO_TYPES];
dsl_pool_t *spa_dsl_pool;
metaslab_class_t *spa_normal_class; /* normal data class */
uint64_t spa_first_txg; /* first txg after spa_open() */
uint64_t spa_final_txg; /* txg of export/destroy */
uint64_t spa_freeze_txg; /* freeze pool at this txg */
objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
vdev_t *spa_root_vdev; /* top-level vdev container */
list_t spa_dirty_list; /* vdevs with dirty labels */
uint64_t spa_spares_object; /* MOS object for spare list */
nvlist_t *spa_sparelist; /* cached spare config */
vdev_t **spa_spares; /* available hot spares */
int spa_nspares; /* number of hot spares */
boolean_t spa_sync_spares; /* sync the spares list */
uint64_t spa_config_object; /* MOS object for pool config */
uint64_t spa_syncing_txg; /* txg currently syncing */
uint64_t spa_sync_bplist_obj; /* object for deferred frees */
bplist_t spa_sync_bplist; /* deferred-free bplist */
krwlock_t spa_traverse_lock; /* traverse vs. spa_sync() */
uberblock_t spa_ubsync; /* last synced uberblock */
uberblock_t spa_uberblock; /* current uberblock */
kmutex_t spa_scrub_lock; /* resilver/scrub lock */
kthread_t *spa_scrub_thread; /* scrub/resilver thread */
traverse_handle_t *spa_scrub_th; /* scrub traverse handle */
uint64_t spa_scrub_restart_txg; /* need to restart */
uint64_t spa_scrub_mintxg; /* min txg we'll scrub */
uint64_t spa_scrub_maxtxg; /* max txg we'll scrub */
uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */
int64_t spa_scrub_throttled; /* over-throttle scrub I/Os */
uint64_t spa_scrub_errors; /* scrub I/O error count */
int spa_scrub_suspended; /* tell scrubber to suspend */
kcondvar_t spa_scrub_cv; /* scrub thread state change */
kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
uint8_t spa_scrub_stop; /* tell scrubber to stop */
uint8_t spa_scrub_active; /* active or suspended? */
uint8_t spa_scrub_type; /* type of scrub we're doing */
uint8_t spa_scrub_finished; /* indicator to rotate logs */
kmutex_t spa_async_lock; /* protect async state */
kthread_t *spa_async_thread; /* thread doing async task */
int spa_async_suspended; /* async tasks suspended */
kcondvar_t spa_async_cv; /* wait for thread_exit() */
uint16_t spa_async_tasks; /* async task mask */
char *spa_root; /* alternate root directory */
kmutex_t spa_uberblock_lock; /* vdev_uberblock_load_done() */
uint64_t spa_ena; /* spa-wide ereport ENA */
boolean_t spa_last_open_failed; /* true if last open faled */
kmutex_t spa_errlog_lock; /* error log lock */
uint64_t spa_errlog_last; /* last error log object */
uint64_t spa_errlog_scrub; /* scrub error log object */
kmutex_t spa_errlist_lock; /* error list/ereport lock */
avl_tree_t spa_errlist_last; /* last error list */
avl_tree_t spa_errlist_scrub; /* scrub error list */
uint64_t spa_deflate; /* should we deflate? */
/*
* spa_refcnt must be the last element because it changes size based on
* compilation options. In order for the MDB module to function
* correctly, the other fields must remain in the same location.
*/
spa_config_lock_t spa_config_lock; /* configuration changes */
refcount_t spa_refcount; /* number of opens */
};
extern const char *spa_config_dir;
extern kmutex_t spa_namespace_lock;
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SPA_IMPL_H */