kernel panic (2.6.23.1-fc7) in drivers/md/raid5.c:144

kernel panic (2.6.23.1-fc7) in drivers/md/raid5.c:144

[Peter]

Hi

I had a 3 disc raid5 array running fine with Fedora 7 (32bit) kernel 2.6.23.1-fc7 on an old Athlon XP using a two sata_sil cards. 

I replaced the hardware with an Athlon64 X2 and using the onboard sata_nv, after I modified the initrd I was able to boot up from my old system drive. However when it brought up the raid array it died with a kernel panic. I used a rescue CD, commented out the array in mdadm.conf and booted up. I could assemble the array manually (it kicked out one of the three drives for some reason?) but when I used mdadm --examine /dev/md0 I got the kernel panic again. I don't have remote debugging but I managed to take some pictures:

http://img132.imageshack.us/img132/1697/kernel1sh3.jpg
http://img132.imageshack.us/img132/3538/kernel2eu2.jpg

From what I understand it should be possible to do this hardware upgrade with using software raid? Any ideas?

Thanks
Peter

Re: kernel panic (2.6.23.1-fc7) in drivers/md/raid5.c:144

[Peter]

Oops, I meant mdadm --detail /dev/md0 of course, not mdadm --examine
 /dev/md0

md: kicking non-fresh sdd1 from the array

I downgraded to 2.6.22.9-91.fc7 and that seems to be working so far, no
 kernel panics yet, trying to bring back sdd to the array. 


----- Original Message ----



Hi

I had a 3 disc raid5 array running fine with Fedora 7 (32bit) kernel
 2.6.23.1-fc7 on an old Athlon XP using a two sata_sil cards. 

I replaced the hardware with an Athlon64 X2 and using the onboard
 sata_nv, after I modified the initrd I was able to boot up from my old
 system drive. However when it brought up the raid array it died with a
 kernel panic. I used a rescue CD, commented out the array in mdadm.conf and
 booted up. I could assemble the array manually (it kicked out one of
 the three drives for some reason?) but when I used mdadm --examine
 /dev/md0 I got the kernel panic again. I don't have remote debugging but I
 managed to take some pictures:

http://img132.imageshack.us/img132/1697/kernel1sh3.jpg
http://img132.imageshack.us/img132/3538/kernel2eu2.jpg

From what I understand it should be possible to do this hardware
 upgrade with using software raid? Any ideas?

Thanks
Peter


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Re: kernel panic (2.6.23.1-fc7) in drivers/md/raid5.c:144

[Dan Williams]

[ Adding Neil, stable@, DaveJ, and GregKH to the cc ]

On Nov 13, 2007 11:20 AM, Peter <thenephilim13@yahoo.com> wrote:
> Hi
>
> I had a 3 disc raid5 array running fine with Fedora 7 (32bit) kernel 2.6.23.1-fc7 on an old Athlon XP using a two sata_sil cards.
>
> I replaced the hardware with an Athlon64 X2 and using the onboard sata_nv, after I modified the initrd I was able to boot up from my old system drive. However when it brought up the raid array it died with a kernel panic. I used a rescue CD, commented out the array in mdadm.conf and booted up. I could assemble the array manually (it kicked out one of the three drives for some reason?) but when I used mdadm --examine /dev/md0 I got the kernel panic again. I don't have remote debugging but I managed to take some pictures:
>
> http://img132.imageshack.us/img132/1697/kernel1sh3.jpg
> http://img132.imageshack.us/img132/3538/kernel2eu2.jpg
>
> From what I understand it should be possible to do this hardware upgrade with using software raid? Any ideas?
>
> Thanks
> Peter
>

There are two bug fix patches pending for 2.6.23.2:
"raid5: fix clearing of biofill operations"
http://marc.info/?l=linux-raid&m=119303750132068&w=2
"raid5: fix unending write sequence"
http://marc.info/?l=linux-raid&m=119453934805607&w=2

You are hitting the bug that was fixed by: "raid5: fix clearing of
biofill operations"

Heads up for the stable@ team "raid5: fix clearing of biofill
operations" was originally misapplied for 2.6.24-rc:
"md: Fix misapplied patch in raid5.c"
http://marc.info/?l=linux-raid&m=119396783332081&w=2