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Message #18849
[Bug 1721279] Re: Improve teardown_mountpoint to recursively find all submounts and unmount them
This bug was fixed in the package livecd-rootfs - 2.408.21
---------------
livecd-rootfs (2.408.21) xenial; urgency=medium
[ Balint Reczey ]
* Use kvm kernel only on amd64.
* Make non-x86 minimized images consistent with x86 by not explicitly
installing the server task.
* Clean up dangling /boot/initrd.img symlink left behind on minimized
builds.
-- Steve Langasek <steve.langasek@xxxxxxxxxx> Fri, 20 Oct 2017
23:10:29 -0700
** Changed in: livecd-rootfs (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1721279
Title:
Improve teardown_mountpoint to recursively find all submounts and
unmount them
Status in livecd-rootfs package in Ubuntu:
Fix Released
Status in livecd-rootfs source package in Xenial:
Fix Released
Bug description:
[SRU Justification]
The teardown_mountpoint function was back-ported to Xenial recently but
the hard coded list of mounts to unmount makes using it problematic when
different features require different set of mounts.
This change set improves teardown_mountpoint to recursively find all submounts and unmount them, instead of working from a hard-coded list. This makes the code resilient against other submounts being added later, including downstream.
[Test case]
Autopkgtest excercises this code-path but to be on the safe side all
cloud images need to be test-built, too.
[Regression potential]
This change may break building images or the host system by unmounting
host's mounts.
[Other Info]
* This is an improvement of LP: #1716992
* The fix also removes sleep / udevadm settle calls which seem to be obsolete
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