Public bug reported:
In week 6 or 7 after an system update , my Xen host stopped booting.
When booting up the Xen Kernel, it will timeout and drop to initramfs shell.
DMESG will show ATA errors/timeouts not finding my harddisk(s). The same system
with the same Kernel but xen-less, boots and works without problems.
I tried several things :
1. adding all the modules which my xen-less system would have loaded to the
initramfs -> no change
2. switching from ahci to ide mode in bios -> no success
3. changing uuid for root with its real block ids (like sda3, etc) in grub ->
no change in boot behaviour
4. blkid in initramfs shell shows nothing !
5. boot Xen with an older installed Kernel Version (3.2.0-23-generic ) -> same
problem
6. cat /proc/partitions shows nothing besides my cdrom(sr0)
7. recreate initrds
8. reinstall whole 12.04
I was able to save the DMESG output from the initramfs shell. The system
would recognize a plugged in USB thumb drive, which I just needed to
mount manually.
Due to the fact that it worked before updates fromn week 6 or 7 (soory I
am not sure) but doesn't work when choosing an older kernel, it looks
like it is not up to the Kernel, but something else, which I am affraid
I cannot find.
** Affects: xen (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "DMESG output"
https://bugs.launchpad.net/bugs/1127214/+attachment/3531614/+files/dmesg
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https://bugs.launchpad.net/bugs/1127214
Title:
Xen Kernel cannot boot due to ATA erros/timeouts
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