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Fix ZIL clone records for legacy holes 

Previous code overengineered cloned range calculation by using
BP_GET_LSIZE(). The problem is that legacy holes don't have the
logical size, so result will be wrong.  But we also don't need
to look on every block size, since they all must be identical.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16165
This commit is contained in:
Alexander Motin 2024-05-09 10:39:57 -04:00 committed by Brian Behlendorf
parent 41f2a9c81f
commit 4c484d66b7
1 changed files with 3 additions and 5 deletions
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8
module/zfs/zfs_log.c
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@ -903,7 +903,7 @@ zfs_log_clone_range(zilog_t *zilog, dmu_tx_t *tx, int txtype, znode_t *zp,
itx_t *itx;
lr_clone_range_t *lr;
uint64_t partlen, max_log_data;
size_t i, partnbps;
size_t partnbps;
if (zil_replaying(zilog, tx) || zp->z_unlinked)
return;
@ -912,10 +912,8 @@ zfs_log_clone_range(zilog_t *zilog, dmu_tx_t *tx, int txtype, znode_t *zp,
while (nbps > 0) {
partnbps = MIN(nbps, max_log_data / sizeof (bps[0]));
partlen = 0;
for (i = 0; i < partnbps; i++) {
partlen += BP_GET_LSIZE(&bps[i]);
}
partlen = partnbps * blksz;
ASSERT3U(partlen, <, len + blksz);
partlen = MIN(partlen, len);
itx = zil_itx_create(txtype,