[Bug 952063] Re: Cannot boot server using mdadm RAID1 after creating LVM snapshot
Phillip Susi
psusi at ubuntu.com
Sun Mar 11 17:39:53 UTC 2012
This appears to be a bug in lvm, not grub.
** Package changed: grub2 (Ubuntu) => lvm2 (Ubuntu)
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https://bugs.launchpad.net/bugs/952063
Title:
Cannot boot server using mdadm RAID1 after creating LVM snapshot
Status in “lvm2” package in Ubuntu:
New
Bug description:
I'm running a test server on Precise to act as a KVM host. The virtual
machines are using LVM logical volumes as backing stores. I have
created several virtual machines by taking an LVM snapshot of a base
image. When I rebooted the server, it no longer boots.
After switching grub to use the console I get messages similar to the
ones reported here: http://www.redhat.com/archives/linux-
lvm/2012-February/msg00032.html - i.e. "Snapshot cow pairing for
exception table handover failed"
The server has 2 2TB SATA drives - partitioned into a smallish sdX1
and a large sdX5. sda1/sdb1 make a mdadm RAID 1 array md0, sda2/sdb2
make md1. Both md devices are clean. md0 contains vgSystem with
logical volumes for root, boot and swap. md1 contains vgVMs with
logical volumes for all the virtual machines.
I can boot the server of a USB stick and then assemble the md arrays
and enable the volume groups and everything seems intact
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: grub-pc 1.99-17ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Sun Mar 11 11:16:44 2012
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120130)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)
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