Re: [linux-lvm] severe problems to remove invalid/full snapshots with debian-etch

[Tomasz Chmielewski <mangoo wpkg org>]

Tom Assmuth schrieb:
> hi,
>
> i gave up using lvm2 with debian sarge cause to a lot of problems
> concerning stability but now i gave it another try with my debian-etch
> box. but here problems with snapshots are still severe.
>
> --
> used system:
> kernel: 2.6.18-3-686 (normal kernel version in etch)
> lvm version
>   LVM version:     2.02.07 (2006-07-17)
>   Library version: 1.02.08 (2006-07-17)
>   Driver version:  4.7.0
> --
>
> problem: 
>
> if a snapshot runs full (having attributes like this calling
> lvs: Swi-I- ) I of course try to remove it with lvremove:
>
> this will throw something like this on all consoles:
>
>  kernel BUG at mm/slab.c:595!
>  invalid opcode: 0000 [#1]
>  EIP is at kmem_cache_free+0x29/0x6d
>  esi: daa2f28c   edi: d9439a88   ebp: 00036c68   esp: c593fdb0
>  Process lvremove (pid: 25402, ti=c593e000 task=c533aaa0 task.ti=c593e000)
>  Stack: 15f529ae daa2f28c dd08dc68 dc86c94e dbf84220 00006d8d 00008000 daa2f240
>  ...
>  EIP: [<c0156f55>] kmem_cache_free+0x29/0x6d SS:ESP 0068:c593fdb0
>  ...

(...)

Check the answer to my earlier post ("moving logical volumes to another 
system *remotely* - how?") by Bryn M. Reeves:

  This is a known issue in older kernels that was fixed upstream in
  2.6.19. See:

  http://www.uwsg.iu.edu/hypermail/linux/kernel/0612.1/2301.html
  https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=204791


--
Tomasz Chmielewski
http://wpkg.org