[Bug 220693] head -r320570 & -r320760 (e.g.): ufs snapshot creation broken & leads to fsck -B related SSD-trim "freeing free block" panics; more

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Jul 14 12:08:03 UTC 2017


Peter Holm <pho at FreeBSD.org> changed:

           What    |Removed                     |Added
                 CC|                            |pho at FreeBSD.org

--- Comment #1 from Peter Holm <pho at FreeBSD.org> ---
Just running mksnap_ffs(8) on a pristine file system triggers:
g_vfs_done():md5a[READ(offset=34368126976, length=28672)]error = 5
This on
FreeBSD t1.osted.lan 12.0-CURRENT FreeBSD 12.0-CURRENT #1 r320982: Fri Jul 14
13:16:44 CEST 2017     pho at t1.osted.lan:/usr/src/sys/amd64/compile/PHO  amd64

Partial script:
mdconfig -a -t swap -s 2g -u $mdstart || exit 1
bsdlabel -w md$mdstart auto
newfs -U md${mdstart}$part > /dev/null
mount /dev/md${mdstart}$part $mntpoint

while ! mksnap_ffs $mntpoint $mntpoint/.snap/stress2; do :; done

tail -5 /var/log/messages | grep "g_vfs_done():md5a" && s=1

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