Public bug reported:
unattended-upgrades upgraded zfs today to 0.6.5.6-0ubuntu19, and since a
subsequent reboot, the zfs filesystem appears empty. I've verified that there
was not a directory named after the zfs mount before the mount, and zfs shows
there is something in the filesystem - see below, but when mounted, no files
are visible.
root@mahrez:/var/log/apt# zfs list -t all -o space
NAME AVAIL USED USEDSNAP USEDDS
USEDREFRESERV USEDCHILD
mahrez 53.5T 332M 201K 457K
0 332M
root@mahrez:/var/log/apt# df /mahrez
Filesystem 1K-blocks Used Available Use% Mounted on
mahrez 57443602688 512 57443602176 1% /mahrez
There are no errors from zfs in the logs, no disk problems, and it has been
scrubbed with no errors.
I've been trying to revert to an older zfs version to test if the update is
definitely the cause, but the packages don't seem to be available. I've booted
into 3 older kernels to see if that helped, but no.
The logs from the update are below. After the update, a user reported they were
getting "operating not permitted" when trying to read their files on the fs. I
verified this was the case, and rebooted to see if that would help, and after
that, no files were listed at all. I've got 4 other machines running older zfs
versions which are fine. I've stopped updates on them.
Start-Date: 2018-03-02 11:05:42
Commandline: /usr/bin/unattended-upgrade
Upgrade: gnome-accessibility-themes:amd64 (3.18.0-2ubuntu1, 3.18.0-2ubuntu2),
bamfdaemon:amd64 (0.5.3~bzr0+16.04.20160824-0ubuntu1,
0.5.3~bzr0+16.04.20180209-0ubuntu1), libsnmp-base:amd64 (5.7.3+dfsg-1ubuntu4,
5.7.3+dfsg-1ubuntu4.1), isc-dhcp-common:amd64 (4.3.3-5ubuntu12.7,
4.3.3-5ubuntu12.9), zfs-zed:amd64 (0.6.5.6-0ubuntu18, 0.6.5.6-0ubuntu19),
libdfu1:amd64 (0.7.0-0ubuntu4.3, 0.8.3-0ubuntu2), zfsutils-linux:amd64
(0.6.5.6-0ubuntu18, 0.6.5.6-0ubuntu19), libbamf3-2:amd64
(0.5.3~bzr0+16.04.20160824-0ubuntu1, 0.5.3~bzr0+16.04.20180209-0ubuntu1),
libsnmp30:amd64 (5.7.3+dfsg-1ubuntu4, 5.7.3+dfsg-1ubuntu4.1),
libzfs2linux:amd64 (0.6.5.6-0ubuntu18, 0.6.5.6-0ubuntu19), libfwupd1:amd64
(0.7.0-0ubuntu4.3, 0.8.3-0ubuntu2), libzpool2linux:amd64 (0.6.5.6-0ubuntu18,
0.6.5.6-0ubuntu19), fwupd:amd64 (0.7.0-0ubuntu4.3, 0.8.3-0ubuntu2),
linux-firmware:amd64 (1.157.16, 1.157.17), libnvpair1linux:amd64
(0.6.5.6-0ubuntu18, 0.6.5.6-0ubuntu19), libuutil1linux:amd64
(0.6.5.6-0ubuntu18, 0.6.5.6-0ubuntu19), zfs-doc:amd64 (0.6.5.6-0ubuntu18,
0.6.5.6-0ubuntu19), isc-dhcp-client:amd64 (4.3.3-5ubuntu12.7, 4.3.3-5ubuntu12.9)
** Affects: zfs-linux (Ubuntu)
Importance: Undecided
Status: New
** Summary changed:
- zfs
+ zfs - filesystem seems empty after package upgrade
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https://bugs.launchpad.net/bugs/1752941
Title:
zfs - filesystem seems empty after package upgrade
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