It is hard to tell when this regressed (if it wasn't always an issue),
but I can confirm that it is certainly still a bug on Oracular.
** Changed in: grub2 (Ubuntu)
Assignee: (unassigned) => Mate Kukri (mkukri)
** Changed in: grub2 (Ubuntu)
Importance: Medium => Low
** Tags removed:
** Tags added: fr-306
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https://bugs.launchpad.net/bugs/1868138
Title:
18.04LTS upgrade of grub-common:amd64 FAILs in post-install;
incorrectly REWRITES user's /etc/default/grub
To
** Tags added: regression-update
** Changed in: grub2 (Ubuntu)
Status: Incomplete => Triaged
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https://bugs.launchpad.net/bugs/1868138
Title:
18.04LTS upgrade of
** Tags added: id-5e74bf26da55cf464815d182
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https://bugs.launchpad.net/bugs/1868138
Title:
18.04LTS upgrade of grub-common:amd64 FAILs in post-install;
incorrectly REWRITES user's
"This bug report is missing data. The reproducer given is invalid, as it
escapes the quoted string, as opposed to the newline."
Yes, it is broken, and it was my fault. I typed the lines instead of
copy I apologise. But, as the poster themselves confirm just
after this, it does break if the '\"ยด
as noted above, these configs have been in place " on a long-time-in-
production Ubuntu 1804LTS server instance"
the configs have been in-place, with line breaks, for years. across
countless upgrades, on ~100+ servers. including grub* packages.
upgrades have ONLY started failing with most
/etc/default/grub is ucf/debconf managed conffile, which has always been
processed by grub2 maintainer scripts, and there was no change in
behaviour of that in bionic.
You may not have ever noticed this before, because you might have only
applied the config change without re-running
So given that 8.13 is affected - which was released a year ago, and it's
a highly unusual configuration, this is not in need of an urgent hotfix.
** Changed in: grub2 (Ubuntu)
Status: Incomplete => Triaged
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> IMHO broken files
please clarify under what circumstances you think it's appropriate/OK to
modify user-config files, breaking them?
because that's what's being done here.
the installer is overwriting the /etc/default/grub file.
> highly unusual abuse of POSIX shell semantics,
horesefeathers
I think the fix here is to fix the info manual to state that it should
not normally be assignment lines, but must always be assignment lines,
and maybe abort hard if we encounter exotic syntax like that.
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Anyway, both
GRUB_CMDLINE_LINUX="moo
bar"
and
GRUB_CMDLINE_LINUX="foo \
bar"
break.
I have looked at OPs claim that this is a new regression, and verified that
this is a wrong assertion - it was broken in 8.13:
ubuntu@boo1:~$ sudo apt install ./*.deb
Reading package lists... Done
Building
This bug report is missing data. The reproducer given is invalid, as it
escapes the quoted string, as opposed to the newline. It also does not
show that this is a regression in the 8.15 upload, as nothing in that
upload changed.
The last change to logic here was made in 8.13, so any such bug must
in comments from ubuntu-devel
[17:50] Continuation lines seem wrong to have in that file
[17:50] If you add a continuation line between 8.14 and 8.15,
you can remove the continuation line again
[17:51] A future update should probably handle that, but a
continuation
comment from hggdh in #irc,
'the last change on install was for 2.02-2ubuntu8.13'
re: impact ... sure, NO-continuation-lines-used is the likely majority
but, impact varies.
fwiw, here anyway, our internal prio's a bit higher.
100+ ubu servers with continuation lines in their grub cfg ...
in
This is a regression
Marking triaged, easily reproducible:
*BEFORE* dist-upgrade:
1. edit /etc/default/grub
2. change GRUB_COMLINE_LINUX_DEFAULT from:
GRUBCMDLINE_LINUX_DEFAULT="quiet splash"
to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet \"
splash"
3. run a dist-upgrade
Expected result:
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