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Merge zvol.c changes from PSARC 2010/306 Read-only ZFS pools

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The changes to zvol.c were never merged from the last onnv_147
bulk update.  This was because zvol.c was largely rewritten
for Linux making it fairly easy to miss these sorts of changes.

This causes a regression when importing a zpool with zvols
read-only.  This does not impact pool which only contain
filesystem datasets.

References:
  illumos/illumos-gate@f9af39b

Signed-off-by: Richard Yao <ryao@cs.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1332
Closes #1333
This commit is contained in:
George Wilson 2013-03-03 00:57:39 -05:00 committed by Brian Behlendorf
parent b01615d5ac
commit a4430fce69
1 changed files with 8 additions and 5 deletions
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5
module/zfs/zvol.c
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@ -941,7 +941,8 @@ zvol_first_open(zvol_state_t *zv)
zv->zv_zilog = zil_open(os, zvol_get_data);
VERIFY(dsl_prop_get_integer(zv->zv_name, "readonly", &ro, NULL) == 0);
if (ro || dmu_objset_is_snapshot(os)) {
if (ro || dmu_objset_is_snapshot(os) ||
!spa_writeable(dmu_objset_spa(os))) {
set_disk_ro(zv->zv_disk, 1);
zv->zv_flags |= ZVOL_RDONLY;
} else {
@ -1352,10 +1353,12 @@ __zvol_create_minor(const char *name)
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, zv->zv_queue);
#endif
if (spa_writeable(dmu_objset_spa(os))) {
if (zil_replay_disable)
zil_destroy(dmu_objset_zil(os), B_FALSE);
else
zil_replay(os, zv, zvol_replay_vector);
}
zv->zv_objset = NULL;
out_dmu_objset_disown: