** Changed in: zfs-linux (Ubuntu)
       Status: New => Invalid

** Description changed:

- unattended-upgrades upgraded zfs today to, 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  
- 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 (,, 
libdfu1:amd64 (0.7.0-0ubuntu4.3, 0.8.3-0ubuntu2), zfsutils-linux:amd64 
(,, 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 (,, libfwupd1:amd64 
(0.7.0-0ubuntu4.3, 0.8.3-0ubuntu2), libzpool2linux:amd64 (,, fwupd:amd64 (0.7.0-0ubuntu4.3, 0.8.3-0ubuntu2), 
linux-firmware:amd64 (1.157.16, 1.157.17), libnvpair1linux:amd64 
(,, libuutil1linux:amd64 
(,, zfs-doc:amd64 (,, isc-dhcp-client:amd64 (4.3.3-5ubuntu12.7, 4.3.3-5ubuntu12.9)
+ qweqweqwe

** Summary changed:

- zfs - filesystem seems empty after package upgrade
+ whycantwedeleteabugwesubmitted

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