On 4/5/07, Andrew Morton <[EMAIL PROTECTED]> wrote:
On Fri, 06 Apr 2007 02:33:03 +1000
Reuben Farrelly <[EMAIL PROTECTED]> wrote:
> Hi,
>
> On 3/04/2007 3:47 PM, Andrew Morton wrote:
> >
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc5/2.6.21-rc5-mm4/
> >
> > - The oops in git-net.patch has been fixed, so that tree has been restored.
> > It is huge.
> >
> > - Added the device-mapper development tree to the -mm lineup (Alasdair
> > Kergon). It is a quilt tree, living at
> > ftp://ftp.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/.
> >
> > - Added davidel's signalfd stuff.
>
> Looks like some damage, or maybe intolerance to on-disk damage, to RAID-1.
>
> md1 is the first array on the disk, and it refuses to start up on boot, or
after
> boot.
>
> ...
>
> tornado ~ # mdadm --assemble /dev/md1 /dev/sda1 /dev/sdc1
> mdadm: device /dev/md1 already active - cannot assemble it
> tornado ~ # mdadm --run /dev/md1
> mdadm: failed to run array /dev/md1: Cannot allocate memory
> tornado ~ #
>
> and looking at a dmesg, this is logged:
>
> md: bind<sdc1>
> md: bind<sda1>
> raid1: raid set md1 active with 2 out of 2 mirrors
> md1: bitmap initialized from disk: read 0/1 pages, set 0 bits, status: -12
> md1: failed to create bitmap (-12)
> md: pers->run() failed ...
Is this the dmesg from boot or the dmesg after running the mdadm --run command?
>
> tornado ~ # uname -a
> Linux tornado 2.6.21-rc5-mm4 #1 SMP Thu Apr 5 23:47:42 EST 2007 x86_64
Intel(R)
> Pentium(R) 4 CPU 3.00GHz GenuineIntel GNU/Linux
> tornado ~ #
>
> The last known version that worked was 2.6.21-rc3-mm1 - I haven't been testing
> out the -mm releases so much lately.
OK. I assume that bitmap->chunks in bitmap_init_from_disk() has some
unexpectedly large value.
I don't _think_ there's anything in -mm which would have triggered this.
Does mainline do the same thing?
I guess it's possible that the code in git-md-accel.patch accidentally
broke things. Perhaps try disabling CONFIG_DMA_ENGINE?
git-md-accel.patch does not touch anything in the raid1 path, but I
guess stranger things have happened.
--
Dan
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