Bug is stale/abandoned. Closing
** Changed in: linux (Ubuntu)
Status: Confirmed => Won't Fix
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https://bugs.launchpad.net/bugs/1452165
Title:
currupted btrfs breaks both recovery and boot
Status in linux package in Ubuntu:
Won't Fix
Bug description:
If btrfs volume is corrupted (separate /home partition, not even /
!!!) than not only booting ubuntu in normal AND recovery mode is
impossible but even liveusb fails as well. The recovery drops to shell
but it's impossible to fix btrfs - there's unkillable mount -t
btrfs... process hanging and kernel regularly pukes with "btrfs-
transacti blocked for 120 seconds" message.
This is beyond horrible - the whole purpose of recovery mode is to fix
errors like that, errors on partition which is not used to boot from
(e. g. /home) should never ever break it. Alternatively you could add
new mode to grub menu - smth like "recovery which actually works" or
something like that.
The workaround is to add 'break=premount' to grub command line and fix
btrfs with 'btrfs check --repair /dev/dm-....' from initramfs.
Found on xubuntu 15.04 x86_64.
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