[Bug 563895] Re: grub2 fails to boot or install when an LVM snapshot exists
Colin Watson
cjwatson at canonical.com
Fri Jan 20 16:58:13 UTC 2012
@nutznboltz: Thanks for your patch, and sorry I took so long to deal
with it. It needed to be reformatted into a patch with proper headers
and attribution in debian/patches/, to match the rest of the package.
Since this has been waiting so long, I just went ahead and did this
rather than walking you through it, but I've left your name in the
changelog.
And yes, it did take a long time. That's because we have more work than
it's humanly possible to do. I'm not sure that recriminations are
productive at this point?
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https://bugs.launchpad.net/bugs/563895
Title:
grub2 fails to boot or install when an LVM snapshot exists
Status in “grub2” package in Ubuntu:
Fix Released
Status in “grub2” source package in Lucid:
Fix Committed
Status in “grub2” package in Debian:
Fix Released
Bug description:
SRU Justification:
Impact: When /boot and / are in an LVM VG and a snapshot is made of an
LVM LV in that VG the system will not boot and grub can not be
modified (updated, reinstalled) until all snapshots are removed.
Testcase:
Binary package hint: grub2
Steps to reproduce:
- (Lucid beta2 installed from CD)
- Take a snapshot of any volume
- on reboot:
error: fd0 read error.
error: no such disk.
grub rescue>
- Use the rescue cd to get a root shell
- Remove the snapshot and reboot
Now, the system boots. Create a new snapshot to repeat.
The system has 2 SATA disks in mdadm RAID1 configuration with 1 lvm
volume on top and no 'normal' partitions.
Also see Comment #6
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/563895/comments/6
Fix: See debdiff patch
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/563895/+attachment/2589269/+files/grub2_1.98-1ubuntu12.1.debdiff
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