[Bug 1607920] [NEW] zfs services fail on firstboot if zfs-utils is integrated into the deployment image

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You have been subscribed to a public bug by Eric Desrochers (slashd):

[Impact]

 * zfs services fail on firstboot if zfs-utils is integrated into the
deployment image.

 * Output from systemd -
sudo systemctl --failed
UNIT LOAD ACTIVE SUB DESCRIPTION
● zfs-import-scan.service loaded failed failed Import ZFS pools by device scanning
● zfs-mount.service loaded failed failed Mount ZFS filesystems

 * This is particularly frustrating for users who use automated
monitoring as it means virtual machines must always be restarted before
showing as clean.

 * This failure is due to zfs services starting up before /etc/mtab has
a chance to be symlinked to /proc/mounts.

[Test Case]

 1. Grab a stock xenial image, and unpack it and add zfs-utils to it.  Repack it.
 2. Boot machine
 3. Check systemctl --failed.

[Regression Potential]

 * none expected, patch has been intensively tested by the upsteam zfs
test script suite.

 * This is a upstream commit merge in 0.7.0.

 * A ubuntu package has been tested (including the upstream commit) by a
user of the community facing this bug, and confirmed it addresses the
problem (see comment #7).

[Other Info]

 * Upstream commit :
https://github.com/zfsonlinux/zfs/commit/792517389fad5c495a2738b61c2e9c65dedaaa9a

 * Upstream bug: https://github.com/zfsonlinux/zfs/issues/4680

 
 * Debian bug : https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839071

** Affects: sysvinit (Ubuntu)
     Importance: Undecided
         Status: Won't Fix

** Affects: zfs-linux (Ubuntu)
     Importance: Medium
     Assignee: Eric Desrochers (slashd)
         Status: In Progress

** Affects: sysvinit (Ubuntu Xenial)
     Importance: Undecided
         Status: Won't Fix

** Affects: zfs-linux (Ubuntu Xenial)
     Importance: Medium
     Assignee: Eric Desrochers (slashd)
         Status: In Progress


** Tags: sts sts-sponsor sts-sru
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zfs services fail on firstboot if zfs-utils is integrated into the deployment image
https://bugs.launchpad.net/bugs/1607920
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