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[dm-devel] Re: 2.6.24-rc4-mm1



On Thu, 06 Dec 2007 06:49:24 -0500 Valdis Kletnieks vt edu wrote:

> On Tue, 04 Dec 2007 21:17:01 PST, Andrew Morton said:
> >   ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.24-rc4/2.6.24-rc4-mm1/
> 
> Something in here broke LVM support - an initrd that has worked fine for
> quite some time suddenly couldn't mount /dev/VolGroup00/root so we get the
> infamous "Kernel panic - not syncing: Attempted to kill init!" when we
> fall off the end of the initrd and haven't pivoted to the real disk.
> 
> It finds the disk OK:
> 
> [   81.202310] sd 0:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB)
> [   81.214466] sd 0:0:0:0: [sda] Write Protect is off
> [   81.226467] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
> [   81.238436] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> [   81.250780]  sda: sda1 sda2
> [   75.396119] sd 0:0:0:0: [sda] Attached SCSI disk
> 
> but then the lvm command says it can't find the volume group VolGroup00 (which
> is actually sda2 - sda1 is a small /boot partition, rest of disk is LVM).
> 
> A quick look at the rc4-mm1 announcement doesn't have any obviously tempting
> patch names to start at, so it looks like it's time to play mm-bisect.  It may
> take me a day or two, as I have some time management issues this week...
> 

OK, thanks.

First step would be to eliminate rewrite-rd.patch: maybe the ramdisk driver
in which that initrd resides is bust.

After that, agk-dm-dm-*.patch are of course the ones to look at.

Please keep dm-devel redhat com cc'ed.


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