Author: delphij
Date: Mon Oct 13 20:39:51 2014
New Revision: 273060
URL: https://svnweb.freebsd.org/changeset/base/273060
Log:
Use write_psize instead of write_asize when doing vdev_space_update.
Without this change the accounting of L2ARC usage would be wrong and
give 16EB free space because the number became negative and overflows.
Obtained from: FreeNAS (issue #6239)
MFC after: 2 weeks
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Mon Oct 13
19:05:18 2014 (r273059)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Mon Oct 13
20:39:51 2014 (r273060)
@@ -5232,7 +5232,7 @@ l2arc_write_buffers(spa_t *spa, l2arc_de
ARCSTAT_INCR(arcstat_l2_write_bytes, write_asize);
ARCSTAT_INCR(arcstat_l2_size, write_sz);
ARCSTAT_INCR(arcstat_l2_asize, write_asize);
- vdev_space_update(dev->l2ad_vdev, write_asize, 0, 0);
+ vdev_space_update(dev->l2ad_vdev, write_psize, 0, 0);
/*
* Bump device hand to the device start if it is approaching the end.
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