hotspares.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/user.h>
#include <sys/uio.h>
#include <sys/t_lock.h>
#include <sys/kmem.h>
#include <vm/page.h>
#include <sys/sysmacros.h>
#include <sys/types.h>
#include <sys/mkdev.h>
#include <sys/stat.h>
#include <sys/open.h>
#include <sys/modctl.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/debug.h>
#include <sys/lvm/md_hotspares.h>
#include <sys/lvm/md_convert.h>
#include <sys/sysevent/eventdefs.h>
#include <sys/sysevent/svm.h>
md_ops_t hotspares_md_ops;
#ifndef lint
static char _depends_on[] = "drv/md";
md_ops_t *md_interface_ops = &hotspares_md_ops;
#endif
extern md_ops_t **md_ops;
extern md_ops_t *md_opslist;
extern md_set_t md_set[];
extern kmutex_t md_mx; /* used to md global stuff */
extern kcondvar_t md_cv; /* md_status events */
extern int md_status;
extern void md_clear_hot_spare_interface();
static void
set_hot_spare_state(hot_spare_t *hs, hotspare_states_t newstate)
{
hs->hs_state = newstate;
uniqtime32(&hs->hs_timestamp);
}
static hot_spare_t *
lookup_hot_spare(set_t setno, mddb_recid_t hs_id, int must_exist)
{
hot_spare_t *hs;
for (hs = (hot_spare_t *)md_set[setno].s_hs; hs; hs = hs->hs_next) {
if (hs->hs_record_id == hs_id)
return (hs);
}
if (must_exist)
ASSERT(0);
return ((hot_spare_t *)NULL);
}
static hot_spare_pool_t *
find_hot_spare_pool(set_t setno, int hsp_id)
{
hot_spare_pool_t *hsp;
hsp = (hot_spare_pool_t *)md_set[setno].s_hsp;
while (hsp != NULL) {
if (hsp->hsp_self_id == hsp_id)
return (hsp);
hsp = hsp->hsp_next;
}
return ((hot_spare_pool_t *)0);
}
static int
seths_create_hsp(set_hs_params_t *shs)
{
hot_spare_pool_t *hsp;
mddb_recid_t recid;
set_t setno;
mddb_type_t typ1;
setno = HSP_SET(shs->shs_hot_spare_pool);
/* Scan the hot spare pool list */
hsp = find_hot_spare_pool(setno, shs->shs_hot_spare_pool);
if (hsp != (hot_spare_pool_t *)0)
return (0);
typ1 = (mddb_type_t)md_getshared_key(setno,
hotspares_md_ops.md_driver.md_drivername);
/* create a hot spare pool record */
if (shs->shs_options & MD_CRO_64BIT) {
#if defined(_ILP32)
return (mdhsperror(&shs->mde, MDE_HSP_UNIT_TOO_LARGE,
shs->shs_hot_spare_pool));
#else
recid = mddb_createrec(sizeof (hot_spare_pool_ond_t), typ1,
HSP_REC, MD_CRO_64BIT | MD_CRO_HOTSPARE_POOL, setno);
#endif
} else {
recid = mddb_createrec(sizeof (hot_spare_pool_ond_t), typ1,
HSP_REC, MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL, setno);
}
if (recid < 0) {
return (mdhsperror(&shs->mde, MDE_HSP_CREATE_FAILURE,
shs->shs_hot_spare_pool));
}
/* get the record addr */
hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid, sizeof (*hsp),
HSP_ONDSK_STR_OFF);
hsp->hsp_self_id = shs->shs_hot_spare_pool;
hsp->hsp_record_id = recid;
hsp->hsp_next = (hot_spare_pool_t *)md_set[setno].s_hsp;
hsp->hsp_refcount = 0;
hsp->hsp_nhotspares = 0;
md_set[setno].s_hsp = (void *) hsp;
mddb_commitrec_wrapper(recid);
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_CREATE, SVM_TAG_HSP, setno,
md_expldev(hsp->hsp_self_id));
rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
hsp->hsp_link.ln_setno = setno;
hsp->hsp_link.ln_id = hsp->hsp_self_id;
hotspares_md_ops.md_head = &hsp->hsp_link;
rw_exit(&hotspares_md_ops.md_link_rw.lock);
return (0);
}
static int
seths_add(set_hs_params_t *shs)
{
hot_spare_t *hs;
hot_spare_pool_t *hsp;
hot_spare_pool_t *prev_hsp;
hot_spare_pool_t *new_hsp;
hot_spare_pool_t *old_hsp;
mddb_recid_t recid;
mddb_recid_t recids[5];
size_t new_size;
int i;
int delete_hsp = 0;
int irecid;
set_t setno;
mddb_type_t typ1;
int hsp_created = 0;
mdkey_t key_old;
int num_keys_old = 0;
/* Not much to do here in case of a dryrun */
if (shs->shs_options & HS_OPT_DRYRUN) {
return (0);
}
/* create an empty hot spare pool */
if (shs->shs_options & HS_OPT_POOL) {
return (seths_create_hsp(shs));
}
setno = HSP_SET(shs->shs_hot_spare_pool);
typ1 = (mddb_type_t)md_getshared_key(setno,
hotspares_md_ops.md_driver.md_drivername);
/* Scan the hot spare list */
hs = (hot_spare_t *)md_set[setno].s_hs;
while (hs) {
if (hs->hs_devnum == shs->shs_component_old) {
break;
}
hs = hs->hs_next;
}
if (hs == NULL) {
/*
* Did not find match for device using devnum so use
* key associated with shs_component_old just
* in case there is a match but the match's dev is NODEV.
* If unable to find a unique key for shs_component_old
* then fail since namespace has multiple entries
* for this old component and we shouldn't allow
* an addition of a hotspare in this case.
*/
if (md_getkeyfromdev(setno, mddb_getsidenum(setno),
shs->shs_component_old, &key_old, &num_keys_old) != 0) {
return (mddeverror(&shs->mde, MDE_NAME_SPACE,
shs->shs_component_old));
}
/*
* If more than one key matches given old_dev - fail command
* since shouldn't add new hotspare if namespace has
* multiple entries.
*/
if (num_keys_old > 1) {
return (mddeverror(&shs->mde, MDE_MULTNM,
shs->shs_component_old));
}
/*
* If there is no key for this entry then fail since
* a key for this entry should exist.
*/
if (num_keys_old == 0) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* Scan the hot spare list again */
hs = (hot_spare_t *)md_set[setno].s_hs;
while (hs) {
/*
* Only need to compare keys when hs_devnum is NODEV.
*/
if ((hs->hs_devnum == NODEV64) &&
(hs->hs_key == key_old)) {
break;
}
hs = hs->hs_next;
}
}
if (hs == NULL) {
/* create a hot spare record */
if (shs->shs_size_option & MD_CRO_64BIT) {
#if defined(_ILP32)
return (mdhserror(&shs->mde, MDE_HS_UNIT_TOO_LARGE,
shs->shs_hot_spare_pool, shs->shs_component_old));
#else
recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
MD_CRO_64BIT | MD_CRO_HOTSPARE, setno);
#endif
} else {
recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
MD_CRO_32BIT | MD_CRO_HOTSPARE, setno);
}
if (recid < 0) {
return (mdhserror(&shs->mde, MDE_HS_CREATE_FAILURE,
shs->shs_hot_spare_pool,
shs->shs_component_old));
}
/* get the addr */
hs = (hot_spare_t *)mddb_getrecaddr_resize(recid, sizeof (*hs),
0);
hs->hs_record_id = recid;
hs->hs_devnum = shs->shs_component_old;
hs->hs_key = shs->shs_key_old;
hs->hs_start_blk = shs->shs_start_blk;
hs->hs_has_label = shs->shs_has_label;
hs->hs_number_blks = shs->shs_number_blks;
set_hot_spare_state(hs, HSS_AVAILABLE);
hs->hs_refcount = 0;
hs->hs_next = (hot_spare_t *)md_set[setno].s_hs;
md_set[setno].s_hs = (void *) hs;
}
/* Scan the hot spare pool list */
hsp = (hot_spare_pool_t *)md_set[setno].s_hsp;
prev_hsp = (hot_spare_pool_t *)0;
while (hsp) {
if (hsp->hsp_self_id == shs->shs_hot_spare_pool) {
break;
}
prev_hsp = hsp;
hsp = hsp->hsp_next;
}
if (hsp == NULL) {
/* create a hot spare pool record */
recid = mddb_createrec(sizeof (hot_spare_pool_ond_t),
typ1, HSP_REC, MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL, setno);
if (recid < 0) {
return (mdhsperror(&shs->mde, MDE_HSP_CREATE_FAILURE,
shs->shs_hot_spare_pool));
}
/* get the record addr */
hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid,
sizeof (*hsp), HSP_ONDSK_STR_OFF);
hsp->hsp_self_id = shs->shs_hot_spare_pool;
hsp->hsp_record_id = recid;
hsp->hsp_next = (hot_spare_pool_t *)md_set[setno].s_hsp;
hsp->hsp_refcount = 0;
hsp->hsp_nhotspares = 0;
/* force prev_hsp to NULL, this will cause hsp to be linked */
prev_hsp = (hot_spare_pool_t *)0;
rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
hsp->hsp_link.ln_setno = setno;
hsp->hsp_link.ln_id = hsp->hsp_self_id;
hotspares_md_ops.md_head = &hsp->hsp_link;
rw_exit(&hotspares_md_ops.md_link_rw.lock);
hsp_created = 1;
} else {
/*
* Make sure the hot spare is not already in the pool.
*/
for (i = 0; i < hsp->hsp_nhotspares; i++)
if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
return (mdhserror(&shs->mde, MDE_HS_INUSE,
shs->shs_hot_spare_pool,
hs->hs_devnum));
}
/*
* Create a new hot spare pool record
* This gives us the one extra hs slot,
* because there is one slot in the
* hot_spare_pool struct
*/
new_size = sizeof (hot_spare_pool_ond_t) +
(sizeof (mddb_recid_t) * hsp->hsp_nhotspares);
recid = mddb_createrec(new_size, typ1, HSP_REC,
MD_CRO_32BIT | MD_CRO_HOTSPARE_POOL, setno);
if (recid < 0) {
return (mdhsperror(&shs->mde, MDE_HSP_CREATE_FAILURE,
hsp->hsp_self_id));
}
new_size = sizeof (hot_spare_pool_t) +
(sizeof (mddb_recid_t) * hsp->hsp_nhotspares);
/* get the record addr */
new_hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid,
new_size, HSP_ONDSK_STR_OFF);
/* copy the old record into the new one */
bcopy((caddr_t)hsp, (caddr_t)new_hsp,
(size_t)((sizeof (hot_spare_pool_t) +
(sizeof (mddb_recid_t) * hsp->hsp_nhotspares)
- sizeof (mddb_recid_t))));
new_hsp->hsp_record_id = recid;
md_rem_link(setno, hsp->hsp_self_id,
&hotspares_md_ops.md_link_rw.lock,
&hotspares_md_ops.md_head);
rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
new_hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
new_hsp->hsp_link.ln_setno = setno;
new_hsp->hsp_link.ln_id = new_hsp->hsp_self_id;
hotspares_md_ops.md_head = &new_hsp->hsp_link;
rw_exit(&hotspares_md_ops.md_link_rw.lock);
/* mark the old hsp to be deleted */
delete_hsp = 1;
old_hsp = hsp;
hsp = new_hsp;
}
if (shs->shs_size_option & MD_CRO_64BIT) {
hs->hs_revision = MD_64BIT_META_DEV;
} else {
hs->hs_revision = MD_32BIT_META_DEV;
}
/* lock the db records */
recids[0] = hs->hs_record_id;
recids[1] = hsp->hsp_record_id;
irecid = 2;
if (delete_hsp)
recids[irecid++] = old_hsp->hsp_record_id;
recids[irecid] = 0;
/* increment the reference count */
hs->hs_refcount++;
/* add the hs at the end of the hot spare pool */
hsp->hsp_hotspares[hsp->hsp_nhotspares] = hs->hs_record_id;
hsp->hsp_nhotspares++;
/*
* NOTE: We do not commit the previous hot spare pool record.
* There is no need, the link gets rebuilt at boot time.
*/
if (prev_hsp)
prev_hsp->hsp_next = hsp;
else
md_set[setno].s_hsp = (void *) hsp;
if (delete_hsp)
old_hsp->hsp_self_id = MD_HSP_NONE;
/* commit the db records */
mddb_commitrecs_wrapper(recids);
if (delete_hsp) {
/* delete the old hot spare pool record */
mddb_deleterec_wrapper(old_hsp->hsp_record_id);
}
if (hsp_created) {
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_CREATE, SVM_TAG_HSP, setno,
md_expldev(hsp->hsp_self_id));
}
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_ADD, SVM_TAG_HSP, setno,
md_expldev(hsp->hsp_self_id));
return (0);
}
static int
seths_delete_hsp(set_hs_params_t *shs)
{
hot_spare_pool_t *prev_hsp;
hot_spare_pool_t *hsp;
set_t setno;
hsp_t hspid;
setno = HSP_SET(shs->shs_hot_spare_pool);
/* Scan the hot spare pool list */
prev_hsp = (hot_spare_pool_t *)0;
hsp = (hot_spare_pool_t *)md_set[setno].s_hsp;
while (hsp) {
if (hsp->hsp_self_id == shs->shs_hot_spare_pool) {
break;
}
prev_hsp = hsp;
hsp = hsp->hsp_next;
}
if (hsp == NULL) {
return (mdhsperror(&shs->mde, MDE_INVAL_HSP,
shs->shs_hot_spare_pool));
}
if (hsp->hsp_nhotspares != 0) {
return (mdhsperror(&shs->mde, MDE_HSP_BUSY,
shs->shs_hot_spare_pool));
}
if (hsp->hsp_refcount != 0) {
return (mdhsperror(&shs->mde, MDE_HSP_REF,
shs->shs_hot_spare_pool));
}
/* In case of a dryrun, we're done here */
if (shs->shs_options & HS_OPT_DRYRUN) {
return (0);
}
/*
* NOTE: We do not commit the previous hot spare pool record.
* There is no need, the link gets rebuilt at boot time.
*/
if (prev_hsp)
prev_hsp->hsp_next = hsp->hsp_next;
else
md_set[setno].s_hsp = (void *) hsp->hsp_next;
hspid = hsp->hsp_self_id;
md_rem_link(setno, hsp->hsp_self_id,
&hotspares_md_ops.md_link_rw.lock,
&hotspares_md_ops.md_head);
mddb_deleterec_wrapper(hsp->hsp_record_id);
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_DELETE, SVM_TAG_HSP, setno,
md_expldev(hspid));
return (0);
}
static int
seths_delete(set_hs_params_t *shs)
{
hot_spare_t *hs;
hot_spare_t *prev_hs;
hot_spare_pool_t *hsp;
mddb_recid_t recids[4];
int i;
set_t setno;
sv_dev_t sv;
int delete_hs = 0;
mdkey_t key_old;
int num_keys_old = 0;
/* delete the hot spare pool */
if (shs->shs_options & HS_OPT_POOL) {
return (seths_delete_hsp(shs));
}
setno = HSP_SET(shs->shs_hot_spare_pool);
/* Scan the hot spare list */
hs = (hot_spare_t *)md_set[setno].s_hs;
prev_hs = (hot_spare_t *)0;
while (hs) {
if (hs->hs_devnum == shs->shs_component_old) {
break;
}
prev_hs = hs;
hs = hs->hs_next;
}
if (hs == NULL) {
/*
* Unable to find device using devnum so use
* key associated with shs_component_old instead.
* If unable to find a unique key for shs_component_old
* then fail since namespace has multiple entries
* for this old component and we're unable to determine
* which key is the valid match for shs_component_old.
*
* Only need to compare keys when hs_devnum is NODEV.
*/
if (md_getkeyfromdev(setno, mddb_getsidenum(setno),
shs->shs_component_old, &key_old, &num_keys_old) != 0) {
return (mddeverror(&shs->mde, MDE_NAME_SPACE,
shs->shs_component_old));
}
/*
* If more than one key matches given old_dev - fail command
* since shouldn't add new hotspare if namespace has
* multiple entries.
*/
if (num_keys_old > 1) {
return (mddeverror(&shs->mde, MDE_MULTNM,
shs->shs_component_old));
}
/*
* If there is no key for this entry then fail since
* a key for this entry should exist.
*/
if (num_keys_old == 0) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* Scan the hot spare list again */
hs = (hot_spare_t *)md_set[setno].s_hs;
prev_hs = (hot_spare_t *)0;
while (hs) {
/*
* Only need to compare keys when hs_devnum is NODEV.
*/
if ((hs->hs_devnum == NODEV64) &&
(hs->hs_key == key_old)) {
break;
}
prev_hs = hs;
hs = hs->hs_next;
}
}
if (hs == NULL) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* Scan the hot spare pool list */
hsp = find_hot_spare_pool(setno, shs->shs_hot_spare_pool);
if (hsp == (hot_spare_pool_t *)0) {
return (mdhsperror(&shs->mde, MDE_INVAL_HSP,
shs->shs_hot_spare_pool));
}
/* check for force flag and state of hot spare */
if (((shs->shs_options & HS_OPT_FORCE) == 0) &&
(hs->hs_state == HSS_RESERVED)) {
return (mdhserror(&shs->mde, MDE_HS_RESVD,
shs->shs_hot_spare_pool, shs->shs_component_old));
}
if (hsp->hsp_refcount && (hs->hs_state == HSS_RESERVED)) {
return (mdhserror(&shs->mde, MDE_HS_RESVD,
shs->shs_hot_spare_pool, shs->shs_component_old));
}
/*
* Make sure the device is in the pool.
*/
for (i = 0; i < hsp->hsp_nhotspares; i++) {
if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
break;
}
}
if (i >= hsp->hsp_nhotspares) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
hs->hs_devnum));
}
/* In case of a dryrun, we're done here */
if (shs->shs_options & HS_OPT_DRYRUN) {
return (0);
}
/* lock the db records */
recids[0] = hs->hs_record_id;
recids[1] = hsp->hsp_record_id;
recids[2] = 0;
sv.setno = setno;
sv.key = hs->hs_key;
hs->hs_refcount--;
if (hs->hs_refcount == 0) {
/*
* NOTE: We do not commit the previous hot spare record.
* There is no need, the link we get rebuilt at boot time.
*/
if (prev_hs) {
prev_hs->hs_next = hs->hs_next;
} else
md_set[setno].s_hs = (void *) hs->hs_next;
/* mark the hot spare to be deleted */
delete_hs = 1;
recids[0] = hsp->hsp_record_id;
recids[1] = 0;
}
/* find the location of the hs in the hsp */
for (i = 0; i < hsp->hsp_nhotspares; i++) {
if (hsp->hsp_hotspares[i] == hs->hs_record_id)
break;
}
/* remove the hs from the hsp */
for (i++; i < hsp->hsp_nhotspares; i++)
hsp->hsp_hotspares[i - 1] = hsp->hsp_hotspares[i];
hsp->hsp_nhotspares--;
/* commit the db records */
mddb_commitrecs_wrapper(recids);
if (delete_hs)
mddb_deleterec_wrapper(hs->hs_record_id);
md_rem_names(&sv, 1);
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_REMOVE, SVM_TAG_HSP, setno,
md_expldev(hsp->hsp_self_id));
return (0);
}
static int
seths_replace(set_hs_params_t *shs)
{
hot_spare_t *hs;
hot_spare_t *prev_hs;
hot_spare_t *new_hs;
hot_spare_pool_t *hsp;
int new_found = 0;
mddb_recid_t recid;
mddb_recid_t recids[5];
int i;
sv_dev_t sv;
int delete_hs = 0;
set_t setno;
mddb_type_t typ1;
mdkey_t key_old;
int num_keys_old = 0;
setno = HSP_SET(shs->shs_hot_spare_pool);
typ1 = (mddb_type_t)md_getshared_key(setno,
hotspares_md_ops.md_driver.md_drivername);
/* Scan the hot spare list */
hs = (hot_spare_t *)md_set[setno].s_hs;
prev_hs = (hot_spare_t *)0;
while (hs) {
if (hs->hs_devnum == shs->shs_component_old) {
break;
}
prev_hs = hs;
hs = hs->hs_next;
}
if (hs == NULL) {
/*
* Unable to find device using devnum so use
* key associated with shs_component_old instead.
* If unable to find a unique key for shs_component_old
* then fail since namespace has multiple entries
* for this old component and we're unable to determine
* which key is the valid match for shs_component_old.
*
* Only need to compare keys when hs_devnum is NODEV.
*/
if (md_getkeyfromdev(setno, mddb_getsidenum(setno),
shs->shs_component_old, &key_old, &num_keys_old) != 0) {
return (mddeverror(&shs->mde, MDE_NAME_SPACE,
shs->shs_component_old));
}
/*
* If more than one key matches given old_dev - fail command
* since unable to determine which key is correct.
*/
if (num_keys_old > 1) {
return (mddeverror(&shs->mde, MDE_MULTNM,
shs->shs_component_old));
}
/*
* If there is no key for this entry then fail since
* a key for this entry should exist.
*/
if (num_keys_old == 0) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* Scan the hot spare list again */
hs = (hot_spare_t *)md_set[setno].s_hs;
prev_hs = (hot_spare_t *)0;
while (hs) {
/*
* Only need to compare keys when hs_devnum is NODEV.
*/
if ((hs->hs_devnum == NODEV64) &&
(hs->hs_key == key_old)) {
break;
}
prev_hs = hs;
hs = hs->hs_next;
}
}
if (hs == NULL) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* check the force flag and the state of the hot spare */
if (((shs->shs_options & HS_OPT_FORCE) == 0) &&
(hs->hs_state == HSS_RESERVED)) {
return (mdhserror(&shs->mde, MDE_HS_RESVD,
shs->shs_hot_spare_pool,
hs->hs_devnum));
}
/* Scan the hot spare pool list */
hsp = find_hot_spare_pool(setno, shs->shs_hot_spare_pool);
if (hsp == (hot_spare_pool_t *)0) {
return (mdhsperror(&shs->mde, MDE_INVAL_HSP,
shs->shs_hot_spare_pool));
}
/*
* Make sure the old device is in the pool.
*/
for (i = 0; i < hsp->hsp_nhotspares; i++) {
if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
break;
}
}
if (i >= hsp->hsp_nhotspares) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
hs->hs_devnum));
}
/* Scan the hot spare list for the new hs */
new_hs = (hot_spare_t *)md_set[setno].s_hs;
new_found = 0;
while (new_hs) {
if (new_hs->hs_devnum == shs->shs_component_new) {
new_found = 1;
break;
}
new_hs = new_hs->hs_next;
}
/*
* Make sure the new device is not already in the pool.
* We don't have to search the hs in this hsp, if the
* new hs was just created. Only if the hot spare was found.
*/
if (new_found) {
for (i = 0; i < hsp->hsp_nhotspares; i++)
if (hsp->hsp_hotspares[i] == new_hs->hs_record_id) {
return (mdhserror(&shs->mde, MDE_HS_INUSE,
shs->shs_hot_spare_pool,
new_hs->hs_devnum));
}
}
/* In case of a dryrun, we're done here */
if (shs->shs_options & HS_OPT_DRYRUN) {
return (0);
}
/*
* Create the new hotspare
*/
if (!new_found) {
/* create a hot spare record */
if (shs->shs_size_option & MD_CRO_64BIT) {
#if defined(_ILP32)
return (mdhserror(&shs->mde, MDE_HS_UNIT_TOO_LARGE,
shs->shs_hot_spare_pool, shs->shs_component_new));
#else
recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
MD_CRO_64BIT | MD_CRO_HOTSPARE, setno);
#endif
} else {
recid = mddb_createrec(HS_ONDSK_STR_SIZE, typ1, HS_REC,
MD_CRO_32BIT | MD_CRO_HOTSPARE, setno);
}
if (recid < 0) {
return (mdhserror(&shs->mde, MDE_HS_CREATE_FAILURE,
shs->shs_hot_spare_pool,
shs->shs_component_new));
}
/* get the addr */
new_hs = (hot_spare_t *)mddb_getrecaddr_resize(recid,
sizeof (*new_hs), 0);
new_hs->hs_record_id = recid;
new_hs->hs_devnum = shs->shs_component_new;
new_hs->hs_key = shs->shs_key_new;
new_hs->hs_start_blk = shs->shs_start_blk;
new_hs->hs_has_label = shs->shs_has_label;
new_hs->hs_number_blks = shs->shs_number_blks;
set_hot_spare_state(new_hs, HSS_AVAILABLE);
new_hs->hs_refcount = 0;
new_hs->hs_isopen = 1;
}
/* lock the db records */
recids[0] = hs->hs_record_id;
recids[1] = new_hs->hs_record_id;
recids[2] = hsp->hsp_record_id;
recids[3] = 0;
sv.setno = setno;
sv.key = hs->hs_key;
hs->hs_refcount--;
if (hs->hs_refcount == 0) {
/*
* NOTE: We do not commit the previous hot spare record.
* There is no need, the link we get rebuilt at boot time.
*/
if (prev_hs) {
prev_hs->hs_next = hs->hs_next;
} else
md_set[setno].s_hs = (void *) hs->hs_next;
/* mark hs to be deleted in the correct order */
delete_hs = 1;
recids[0] = new_hs->hs_record_id;
recids[1] = hsp->hsp_record_id;
recids[2] = 0;
}
/* link into the hs list */
new_hs->hs_refcount++;
if (!new_found) {
/* do this AFTER the old dev is possibly removed */
new_hs->hs_next = (hot_spare_t *)md_set[setno].s_hs;
md_set[setno].s_hs = (void *) new_hs;
}
/* find the location of the old hs in the hsp */
for (i = 0; i < hsp->hsp_nhotspares; i++) {
if (hsp->hsp_hotspares[i] == hs->hs_record_id) {
hsp->hsp_hotspares[i] = new_hs->hs_record_id;
break;
}
}
if (shs->shs_size_option & MD_CRO_64BIT) {
new_hs->hs_revision = MD_64BIT_META_DEV;
} else {
new_hs->hs_revision = MD_32BIT_META_DEV;
}
/* commit the db records */
mddb_commitrecs_wrapper(recids);
if (delete_hs)
mddb_deleterec_wrapper(hs->hs_record_id);
md_rem_names(&sv, 1);
SE_NOTIFY(EC_SVM_CONFIG, ESC_SVM_REPLACE, SVM_TAG_HSP, setno,
md_expldev(hsp->hsp_self_id));
return (0);
}
static int
seths_enable(set_hs_params_t *shs)
{
hot_spare_t *hs;
mddb_recid_t recids[2];
set_t setno = shs->md_driver.md_setno;
mdkey_t key_old;
int num_keys_old = 0;
/*
* Find device by using key associated with shs_component_old.
* If unable to find a unique key for shs_component_old
* then fail since namespace has multiple entries
* for this old component and we're unable to determine
* which key is the valid match for shs_component_old.
* This failure keeps a hotspare from being enabled on a slice
* that may already be in use by another metadevice.
*/
if (md_getkeyfromdev(setno, mddb_getsidenum(setno),
shs->shs_component_old, &key_old, &num_keys_old) != 0) {
return (mddeverror(&shs->mde, MDE_NAME_SPACE,
shs->shs_component_old));
}
/*
* If more than one key matches given old_dev - fail command
* since unable to determine which key is correct.
*/
if (num_keys_old > 1) {
return (mddeverror(&shs->mde, MDE_MULTNM,
shs->shs_component_old));
}
/*
* If there is no key for this entry then fail since
* a key for this entry should exist.
*/
if (num_keys_old == 0) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* Scan the hot spare list for the hs */
hs = (hot_spare_t *)md_set[setno].s_hs;
while (hs) {
/*
* Since component may or may not be currently in the system,
* use the keys to find a match (not the devt).
*/
if (hs->hs_key == key_old) {
break;
}
hs = hs->hs_next;
}
if (hs == NULL) {
return (mddeverror(&shs->mde, MDE_INVAL_HS,
shs->shs_component_old));
}
/* make sure it's broken */
if (hs->hs_state != HSS_BROKEN) {
return (mddeverror(&shs->mde, MDE_FIX_INVAL_HS_STATE,
hs->hs_devnum));
}
/* In case of a dryrun, we're done here */
if (shs->shs_options & HS_OPT_DRYRUN) {
return (0);
}
/* fix it */
set_hot_spare_state(hs, HSS_AVAILABLE);
hs->hs_start_blk = shs->shs_start_blk;
hs->hs_has_label = shs->shs_has_label;
hs->hs_number_blks = shs->shs_number_blks;
/* commit the db records */
recids[0] = hs->hs_record_id;
recids[1] = 0;
mddb_commitrecs_wrapper(recids);
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_ENABLE, SVM_TAG_HS, setno,
shs->shs_component_old);
return (0);
}
static int
get_hs(
get_hs_params_t *ghs
)
{
hot_spare_t *hs;
set_t setno = ghs->md_driver.md_setno;
mdclrerror(&ghs->mde);
/* Scan the hot spare list for the hs */
hs = (hot_spare_t *)md_set[setno].s_hs;
while (hs) {
if (hs->hs_key == ghs->ghs_key) {
break;
}
hs = hs->hs_next;
}
if (hs == NULL) {
return (mddeverror(&ghs->mde, MDE_INVAL_HS,
ghs->ghs_devnum));
}
ghs->ghs_start_blk = hs->hs_start_blk;
ghs->ghs_number_blks = hs->hs_number_blks;
ghs->ghs_state = hs->hs_state;
ghs->ghs_timestamp = hs->hs_timestamp;
ghs->ghs_revision = hs->hs_revision;
return (0);
}
static void
build_key_list(set_t setno, hot_spare_pool_t *hsp, mdkey_t *list)
{
int i;
for (i = 0; i < hsp->hsp_nhotspares; i++) {
hot_spare_t *hs;
hs = lookup_hot_spare(setno, hsp->hsp_hotspares[i], 1);
list[i] = hs->hs_key;
}
}
static int
get_hsp(
void *d,
int mode
)
{
hot_spare_pool_t *hsp;
get_hsp_t *ghsp;
size_t size;
set_t setno;
int err = 0;
md_i_get_t *migp = (md_i_get_t *)d;
setno = migp->md_driver.md_setno;
mdclrerror(&migp->mde);
/* Scan the hot spare pool list */
hsp = find_hot_spare_pool(setno, migp->id);
if (hsp == NULL) {
return (mdhsperror(&migp->mde, MDE_INVAL_HSP,
migp->id));
}
size = (sizeof (ghsp->ghsp_hs_keys[0]) * (hsp->hsp_nhotspares - 1)) +
sizeof (get_hsp_t);
if (migp->size == 0) {
migp->size = (int)size;
return (0);
}
if (migp->size < size)
return (EFAULT);
ghsp = kmem_alloc(size, KM_SLEEP);
ghsp->ghsp_id = hsp->hsp_self_id;
ghsp->ghsp_refcount = hsp->hsp_refcount;
ghsp->ghsp_nhotspares = hsp->hsp_nhotspares;
build_key_list(setno, hsp, ghsp->ghsp_hs_keys);
if (ddi_copyout(ghsp, (caddr_t)(uintptr_t)migp->mdp, size, mode))
err = EFAULT;
kmem_free(ghsp, size);
return (err);
}
static int
set_hs(
set_hs_params_t *shs
)
{
mdclrerror(&shs->mde);
if (md_get_setstatus(shs->md_driver.md_setno) & MD_SET_STALE)
return (mdmddberror(&shs->mde, MDE_DB_STALE, NODEV32,
shs->md_driver.md_setno));
switch (shs->shs_cmd) {
case ADD_HOT_SPARE:
return (seths_add(shs));
case DELETE_HOT_SPARE:
return (seths_delete(shs));
case REPLACE_HOT_SPARE:
return (seths_replace(shs));
case FIX_HOT_SPARE:
return (seths_enable(shs));
default:
return (mderror(&shs->mde, MDE_INVAL_HSOP));
}
}
static void
hotspares_poke_hotspares(void)
{
intptr_t (*poke_hs)();
int i;
for (i = 0; i < MD_NOPS; i++) {
/* handle change */
poke_hs = md_get_named_service(NODEV64, i, "poke hotspares", 0);
if (poke_hs)
(void) (*poke_hs)();
}
}
/*ARGSUSED4*/
static int
hotspares_ioctl(
dev_t dev,
int cmd,
void *data,
int mode,
IOLOCK *lockp
)
{
size_t sz = 0;
void *d = NULL;
int err = 0;
/* single thread */
if (getminor(dev) != MD_ADM_MINOR)
return (ENOTTY);
/* We can only handle 32-bit clients for internal commands */
if ((mode & DATAMODEL_MASK) != DATAMODEL_ILP32) {
return (EINVAL);
}
mutex_enter(&md_mx);
while (md_status & MD_GBL_HS_LOCK)
cv_wait(&md_cv, &md_mx);
md_status |= MD_GBL_HS_LOCK;
mutex_exit(&md_mx);
/* dispatch ioctl */
switch (cmd) {
case MD_IOCSET_HS: /* setup hot spares and pools */
{
if (! (mode & FWRITE)) {
err = EACCES;
break;
}
sz = sizeof (set_hs_params_t);
d = kmem_alloc(sz, KM_SLEEP);
if (ddi_copyin(data, d, sz, mode)) {
err = EFAULT;
break;
}
err = set_hs(d);
break;
}
case MD_IOCGET_HS: /* get hot spare info */
{
if (! (mode & FREAD)) {
err = EACCES;
break;
}
sz = sizeof (get_hs_params_t);
d = kmem_alloc(sz, KM_SLEEP);
if (ddi_copyin(data, d, sz, mode)) {
err = EFAULT;
break;
}
err = get_hs(d);
break;
}
case MD_IOCGET: /* get hot spare pool info */
{
if (! (mode & FREAD)) {
err = EACCES;
break;
}
sz = sizeof (md_i_get_t);
d = kmem_alloc(sz, KM_SLEEP);
if (ddi_copyin(data, d, sz, mode)) {
err = EFAULT;
break;
}
err = get_hsp(d, mode);
break;
}
default:
err = ENOTTY;
}
/*
* copyout and free any args
*/
if (sz != 0) {
if (err == 0) {
if (ddi_copyout(d, data, sz, mode) != 0) {
err = EFAULT;
}
}
kmem_free(d, sz);
}
/* un single thread */
mutex_enter(&md_mx);
md_status &= ~MD_GBL_HS_LOCK;
cv_broadcast(&md_cv);
mutex_exit(&md_mx);
/* handle change */
hotspares_poke_hotspares();
/* return success */
return (err);
}
static void
load_hotspare(set_t setno, mddb_recid_t recid)
{
hot_spare_t *hs;
mddb_de_ic_t *dep;
mddb_rb32_t *rbp;
size_t newreqsize;
hot_spare_t *b_hs;
hot_spare32_od_t *s_hs;
mddb_setrecprivate(recid, MD_PRV_GOTIT);
dep = mddb_getrecdep(recid);
dep->de_flags = MDDB_F_HOTSPARE;
rbp = dep->de_rb;
if (rbp->rb_revision == MDDB_REV_RB) {
/*
* Needs to convert to internal 64 bit
*/
s_hs = (hot_spare32_od_t *)mddb_getrecaddr(recid);
newreqsize = sizeof (hot_spare_t);
b_hs = (hot_spare_t *)kmem_zalloc(newreqsize, KM_SLEEP);
hs_convert((caddr_t)s_hs, (caddr_t)b_hs, SMALL_2_BIG);
kmem_free(s_hs, dep->de_reqsize);
dep->de_rb_userdata = b_hs;
dep->de_reqsize = newreqsize;
hs = b_hs;
} else {
hs = (hot_spare_t *)mddb_getrecaddr_resize
(recid, sizeof (*hs), 0);
}
#if defined(_ILP32)
if (hs->hs_revision == MD_64BIT_META_DEV) {
char devname[MD_MAX_CTDLEN];
set_hot_spare_state(hs, HSS_BROKEN);
(void) md_devname(setno, hs->hs_devnum, devname,
sizeof (devname));
cmn_err(CE_NOTE, "%s is unavailable because 64 bit hotspares "
"are not accessible on a 32 bit kernel\n", devname);
}
#endif
ASSERT(hs != NULL);
if (hs->hs_refcount == 0) {
mddb_setrecprivate(recid, MD_PRV_PENDDEL);
return;
}
hs->hs_next = (hot_spare_t *)md_set[setno].s_hs;
md_set[setno].s_hs = (void *)hs;
hs->hs_isopen = 0;
hs->hs_devnum = md_getdevnum(setno, mddb_getsidenum(setno),
hs->hs_key, MD_NOTRUST_DEVT);
}
static void
load_hotsparepool(set_t setno, mddb_recid_t recid)
{
hot_spare_pool_t *hsp;
hot_spare_pool_ond_t *hsp_ond;
size_t hsp_icsize;
mddb_setrecprivate(recid, MD_PRV_GOTIT);
hsp_ond = (hot_spare_pool_ond_t *)mddb_getrecaddr(recid);
ASSERT(hsp_ond != NULL);
if (hsp_ond->hsp_self_id == MD_HSP_NONE) {
mddb_setrecprivate(recid, MD_PRV_PENDDEL);
return;
}
hsp_icsize = HSP_ONDSK_STR_OFF + mddb_getrecsize(recid);
hsp = (hot_spare_pool_t *)mddb_getrecaddr_resize(recid, hsp_icsize,
HSP_ONDSK_STR_OFF);
hsp->hsp_next = (hot_spare_pool_t *)md_set[setno].s_hsp;
md_set[setno].s_hsp = (void *) hsp;
rw_enter(&hotspares_md_ops.md_link_rw.lock, RW_WRITER);
hsp->hsp_link.ln_next = hotspares_md_ops.md_head;
hsp->hsp_link.ln_setno = setno;
hsp->hsp_link.ln_id = hsp->hsp_self_id;
hotspares_md_ops.md_head = &hsp->hsp_link;
rw_exit(&hotspares_md_ops.md_link_rw.lock);
}
static int
hotspares_snarf(md_snarfcmd_t cmd, set_t setno)
{
mddb_recid_t recid;
int gotsomething;
mddb_type_t typ1;
if (cmd == MD_SNARF_CLEANUP)
return (0);
gotsomething = 0;
typ1 = (mddb_type_t)md_getshared_key(setno,
hotspares_md_ops.md_driver.md_drivername);
recid = mddb_makerecid(setno, 0);
while ((recid = mddb_getnextrec(recid, typ1, 0)) > 0) {
if (mddb_getrecprivate(recid) & MD_PRV_GOTIT)
continue;
switch (mddb_getrectype2(recid)) {
case HSP_REC:
load_hotsparepool(setno, recid);
gotsomething = 1;
break;
case HS_REC:
load_hotspare(setno, recid);
gotsomething = 1;
break;
default:
ASSERT(0);
}
}
if (gotsomething)
return (gotsomething);
recid = mddb_makerecid(setno, 0);
while ((recid = mddb_getnextrec(recid, typ1, 0)) > 0)
if (!(mddb_getrecprivate(recid) & MD_PRV_GOTIT))
mddb_setrecprivate(recid, MD_PRV_PENDDEL);
return (0);
}
static int
hotspares_halt(md_haltcmd_t cmd, set_t setno)
{
hot_spare_t *hs, **p_hs;
hot_spare_pool_t *hsp, **p_hsp;
if (cmd == MD_HALT_CLOSE)
return (0);
if (cmd == MD_HALT_OPEN)
return (0);
if (cmd == MD_HALT_CHECK)
return (0);
if (cmd == MD_HALT_UNLOAD)
return (0);
if (cmd != MD_HALT_DOIT)
return (1);
/*
* Find all the hotspares for set "setno"
* and remove them from the hot_spare_list.
*/
p_hs = (hot_spare_t **)&md_set[setno].s_hs;
hs = (hot_spare_t *)md_set[setno].s_hs;
for (; hs != NULL; hs = *p_hs)
*p_hs = hs->hs_next;
/*
* Find all the hotspare pools for set "setno"
* and remove them from the hot_spare_pools list.
* Also remove from the get_next list.
*/
p_hsp = (hot_spare_pool_t **)&md_set[setno].s_hsp;
hsp = (hot_spare_pool_t *)md_set[setno].s_hsp;
for (; hsp != NULL; hsp = *p_hsp) {
md_rem_link(setno, hsp->hsp_self_id,
&hotspares_md_ops.md_link_rw.lock,
&hotspares_md_ops.md_head);
*p_hsp = hsp->hsp_next;
}
return (0);
}
static hot_spare_t *
usable_hs(
set_t setno,
mddb_recid_t hs_id,
diskaddr_t nblks,
int labeled,
diskaddr_t *start)
{
hot_spare_t *hs;
hs = lookup_hot_spare(setno, hs_id, 1);
if (hs->hs_state != HSS_AVAILABLE)
return ((hot_spare_t *)0);
if (labeled && hs->hs_has_label && (hs->hs_number_blks >= nblks)) {
*start = 0;
return (hs);
} else if ((hs->hs_number_blks - hs->hs_start_blk) >= nblks) {
*start = hs->hs_start_blk;
return (hs);
}
return ((hot_spare_t *)0);
}
static int
reserve_a_hs(
set_t setno,
mddb_recid_t id,
uint64_t size,
int labeled,
mddb_recid_t *hs_id,
mdkey_t *key,
md_dev64_t *dev,
diskaddr_t *sblock)
{
hot_spare_pool_t *hsp;
hot_spare_t *hs;
int i;
*hs_id = 0;
hsp = find_hot_spare_pool(setno, id);
if (hsp == NULL)
return (-1);
for (i = 0; i < hsp->hsp_nhotspares; i++) {
hs = usable_hs(setno, hsp->hsp_hotspares[i],
size, labeled, sblock);
if (hs == NULL)
continue;
set_hot_spare_state(hs, HSS_RESERVED);
*hs_id = hs->hs_record_id;
*key = hs->hs_key;
*dev = hs->hs_devnum;
/* NOTE: Mirror code commits the hs record */
return (0);
}
return (-1);
}
/* ARGSUSED3 */
static int
return_a_hs(
set_t setno,
mddb_recid_t id,
mddb_recid_t *hs_id,
mdkey_t key,
diskaddr_t sblock,
uint64_t size,
hotspare_states_t new_state)
{
hot_spare_pool_t *hsp;
hot_spare_t *hs;
int i;
/*
* NOTE: sblock/size are not currently being used.
* That is because we always allocate the whole hs.
* Later if we choose to allocate only what is needed
* then the sblock/size can be used to determine
* which part is being unreseved.
*/
*hs_id = 0;
hsp = find_hot_spare_pool(setno, id);
if (hsp == NULL)
return (-1);
for (i = 0; i < hsp->hsp_nhotspares; i++) {
hs = lookup_hot_spare(setno, hsp->hsp_hotspares[i], 1);
if (hs->hs_key != key)
continue;
set_hot_spare_state(hs, new_state);
*hs_id = hs->hs_record_id;
if (new_state == HSS_BROKEN) {
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_ERRED, SVM_TAG_HS,
setno, hs->hs_devnum);
}
if (new_state == HSS_AVAILABLE) {
SE_NOTIFY(EC_SVM_STATE, ESC_SVM_HS_FREED, SVM_TAG_HS,
setno, hs->hs_devnum);
}
/* NOTE: Mirror/Raid code commits the hs record */
return (0);
}
return (-1);
}
static int
modify_hsp_ref(set_t setno, mddb_recid_t id, int incref, mddb_recid_t *hsp_id)
{
hot_spare_pool_t *hsp;
*hsp_id = 0;
if (id < 0)
return (0);
hsp = find_hot_spare_pool(setno, id);
if (hsp == NULL)
return (-1);
if (incref)
hsp->hsp_refcount++;
else
hsp->hsp_refcount--;
*hsp_id = hsp->hsp_record_id;
/* NOTE: Stripe code commits the hsp record */
return (0);
}
static int
mkdev_for_a_hs(mddb_recid_t hs_id, md_dev64_t *dev)
{
hot_spare_t *hs;
hs = lookup_hot_spare(mddb_getsetnum(hs_id), hs_id, 0);
if (hs == NULL)
return (0);
*dev = hs->hs_devnum;
return (0);
}
static intptr_t
hotspares_interface(
hs_cmds_t cmd,
mddb_recid_t id,
uint64_t size,
int bool,
mddb_recid_t *hs_id,
mdkey_t *key,
md_dev64_t *dev,
diskaddr_t *sblock)
{
set_t setno;
int err = -1;
mutex_enter(&md_mx);
while (md_status & MD_GBL_HS_LOCK)
cv_wait(&md_cv, &md_mx);
/* If md_halt has been run do not continue */
if (md_status & (MD_GBL_HALTED | MD_GBL_DAEMONS_DIE)) {
mutex_exit(&md_mx);
return (ENXIO);
}
md_status |= MD_GBL_HS_LOCK;
mutex_exit(&md_mx);
setno = mddb_getsetnum(id);
switch (cmd) {
case HS_GET:
err = reserve_a_hs(setno, id, size, bool, hs_id,
key, dev, sblock);
break;
case HS_FREE:
err = return_a_hs(setno, id, hs_id, *key, 0, 0, HSS_AVAILABLE);
hotspares_poke_hotspares();
break;
case HS_BAD:
err = return_a_hs(setno, id, hs_id, *key, 0, 0, HSS_BROKEN);
break;
case HSP_INCREF:
err = modify_hsp_ref(setno, id, 1, hs_id);
break;
case HSP_DECREF:
err = modify_hsp_ref(setno, id, 0, hs_id);
break;
case HS_MKDEV:
err = mkdev_for_a_hs(*hs_id, dev);
break;
}
mutex_enter(&md_mx);
md_status &= ~MD_GBL_HS_LOCK;
cv_broadcast(&md_cv);
mutex_exit(&md_mx);
return (err);
}
static void
imp_hotsparepool(
set_t setno,
mddb_recid_t recid
)
{
hot_spare_pool_ond_t *hsp_ond;
mddb_recid_t *hsp_recid, *hs_recid;
int i;
uint_t *hsp_selfid;
mddb_setrecprivate(recid, MD_PRV_GOTIT);
hsp_ond = (hot_spare_pool_ond_t *)mddb_getrecaddr(recid);
hsp_recid = &(hsp_ond->hsp_record_id);
hsp_selfid = &(hsp_ond->hsp_self_id);
/*
* Fixup the pool and hotspares
*/
*hsp_recid = MAKERECID(setno, DBID(*hsp_recid));
*hsp_selfid = MAKERECID(setno, DBID(*hsp_selfid));
for (i = 0; i < hsp_ond->hsp_nhotspares; i++) {
hs_recid = &(hsp_ond->hsp_hotspares[i]);
*hs_recid = MAKERECID(setno, DBID(*hs_recid));
}
}
static void
imp_hotspare(
set_t setno,
mddb_recid_t recid
)
{
mddb_de_ic_t *dep;
mddb_rb32_t *rbp;
hot_spare_t *hs64;
hot_spare32_od_t *hs32;
mddb_recid_t *hs_recid;
mddb_setrecprivate(recid, MD_PRV_GOTIT);
dep = mddb_getrecdep(recid);
rbp = dep->de_rb;
if (rbp->rb_revision == MDDB_REV_RB) {
/*
* 32 bit hotspare
*/
hs32 = (hot_spare32_od_t *)mddb_getrecaddr(recid);
hs_recid = &(hs32->hs_record_id);
} else {
hs64 = (hot_spare_t *)mddb_getrecaddr(recid);
hs_recid = &(hs64->hs_record_id);
}
/*
* Fixup the setno
*/
*hs_recid = MAKERECID(setno, DBID(*hs_recid));
}
static int
hotspares_imp_set(
set_t setno
)
{
mddb_recid_t recid;
int gotsomething;
mddb_type_t typ1;
gotsomething = 0;
typ1 = (mddb_type_t)md_getshared_key(setno,
hotspares_md_ops.md_driver.md_drivername);
recid = mddb_makerecid(setno, 0);
while ((recid = mddb_getnextrec(recid, typ1, 0)) > 0) {
if (mddb_getrecprivate(recid) & MD_PRV_GOTIT)
continue;
switch (mddb_getrectype2(recid)) {
case HSP_REC:
imp_hotsparepool(setno, recid);
gotsomething = 1;
break;
case HS_REC:
imp_hotspare(setno, recid);
gotsomething = 1;
break;
default:
ASSERT(0);
}
}
return (gotsomething);
}
static md_named_services_t hotspares_named_services[] = {
{hotspares_interface, "hot spare interface"},
{NULL, 0}
};
md_ops_t hotspares_md_ops = {
NULL, /* open */
NULL, /* close */
NULL, /* strategy */
NULL, /* print */
NULL, /* dump */
NULL, /* read */
NULL, /* write */
hotspares_ioctl, /* hotspares_ioctl, */
hotspares_snarf, /* hotspares_snarf */
hotspares_halt, /* halt */
NULL, /* aread */
NULL, /* awrite */
hotspares_imp_set, /* import set */
hotspares_named_services /* named_services */
};
static void
fini_uninit()
{
/* prevent access to services that may have been imported */
md_clear_hot_spare_interface();
}
/* define the module linkage */
MD_PLUGIN_MISC_MODULE("hot spares module %I%", md_noop, fini_uninit())