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ZIL: Tune some assertions.

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In zil_free_lwb() we should first assert lwb_state or the rest of
assertions can be misleading if it is false.

Add lwb_state assertions in zil_lwb_add_block() to make sure we are
not trying to add elements to lwb_vdev_tree after it was processed.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #15227
This commit is contained in:
Alexander Motin 2023-09-01 20:13:22 -04:00 committed by Brian Behlendorf
parent 400f56e3f8
commit 5a7cb0b065
1 changed files with 9 additions and 6 deletions
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15
module/zfs/zil.c
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@ -814,17 +814,17 @@ static void
zil_free_lwb(zilog_t *zilog, lwb_t *lwb)
{
ASSERT(MUTEX_HELD(&zilog->zl_lock));
ASSERT(!MUTEX_HELD(&lwb->lwb_vdev_lock));
VERIFY(list_is_empty(&lwb->lwb_waiters));
VERIFY(list_is_empty(&lwb->lwb_itxs));
ASSERT(avl_is_empty(&lwb->lwb_vdev_tree));
ASSERT(lwb->lwb_state == LWB_STATE_NEW ||
lwb->lwb_state == LWB_STATE_FLUSH_DONE);
ASSERT3P(lwb->lwb_child_zio, ==, NULL);
ASSERT3P(lwb->lwb_write_zio, ==, NULL);
ASSERT3P(lwb->lwb_root_zio, ==, NULL);
ASSERT3U(lwb->lwb_alloc_txg, <=, spa_syncing_txg(zilog->zl_spa));
ASSERT3U(lwb->lwb_max_txg, <=, spa_syncing_txg(zilog->zl_spa));
ASSERT(lwb->lwb_state == LWB_STATE_NEW ||
lwb->lwb_state == LWB_STATE_FLUSH_DONE);
VERIFY(list_is_empty(&lwb->lwb_itxs));
VERIFY(list_is_empty(&lwb->lwb_waiters));
ASSERT(avl_is_empty(&lwb->lwb_vdev_tree));
ASSERT(!MUTEX_HELD(&lwb->lwb_vdev_lock));
/*
* Clear the zilog's field to indicate this lwb is no longer
@ -1329,6 +1329,9 @@ zil_lwb_add_block(lwb_t *lwb, const blkptr_t *bp)
int ndvas = BP_GET_NDVAS(bp);
int i;
ASSERT3S(lwb->lwb_state, !=, LWB_STATE_WRITE_DONE);
ASSERT3S(lwb->lwb_state, !=, LWB_STATE_FLUSH_DONE);
if (zil_nocacheflush)
return;