$ release=xenial
$ ref=$release-proposed
$ ./lxc-proposed-snapshot --proposed --publish $release $ref
Creating xenial-proposed-99518881
$ lxc init $ref $name
Creating proposed-test
...
$ lxc start $name
$ sleep 10
$ lxc exec $name apt install grub-legacy-ec2
$ lxc exec $name mv /etc/fstab /etc/fstab.orig
$ lxc exec $name dpkg-reconfigure grub-legacy-ec2
Searching for GRUB installation directory ... found: /boot/grub
Cannot determine root device. Assuming /dev/hda1
This error is probably caused by an invalid /etc/fstab
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Updating /boot/grub/menu.lst ... done
$ lxc exec $name dpkg-reconfigure grub-legacy-ec2
Searching for GRUB installation directory ... found: /boot/grub
Cannot determine root device. Assuming /dev/hda1
This error is probably caused by an invalid /etc/fstab
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Updating /boot/grub/menu.lst ... done
$ lxc exec $name dpkg-reconfigure grub-legacy-ec2 2>&1 | grep fatal
$ echo $?
0
$ lxc exec $name -- dpkg -l grub-legacy-ec2
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture
Description
+++-====================================-=======================-=======================-=============================================================================
ii grub-legacy-ec2 0.7.9-113-g513e99e0-0ub all
Handles update-grub for ec2 instances
** Tags added: verification-done-xenial
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https://bugs.launchpad.net/bugs/1682160
Title:
update-grub-legacy-ec2 fails if no /etc/fstab causing install or
upgrade fail
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