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Fix ZIL clone records for legacy holes

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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 GitHub
parent af5dbed319
commit 3400127a75
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1 changed files with 3 additions and 5 deletions
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8
module/zfs/zfs_log.c
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@ -895,7 +895,7 @@ 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;
@ -904,10 +904,8 @@ 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,