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xen-users
Re: [Xen-users] Xen breaks under high I/O load
Hrmm. Not sure off the top of my head, no. You could try reporting this to
the xen-devel mailing list where it might get developer attention.
Try to use a more descriptive subject line such as "domU panics under High I/O
load".
Have you tried reporting this to the RHEL developers? (or if you're using a
RHEL derivative like Scientific Linux or CentOS, to their developers). Have
you searched to see if other people have had a similar problem anywhere.
Sorry not to be more specific.
Cheers,
Mark
> When performing high I/O operations on the guests, xen just breaks and
> the guest dies.
>
> login: Unable to handle kernel NULL pointer dereference a
> t virtual address 00000b54
> printing eip:
> c01493b1
> 0c735000 -> *pde = 00000000:73639027
> 0b19c000 -> *pme = 00000000:71421067
> 0f62b000 -> *pte = 00000000:00000000
> Oops: 0002 [#1]
> SMP
> Modules linked in: libafs(U) autofs4 sunrpc md5 ipv6 dm_mirror dm_mod
> xennet xen blk ext3 jbd
> CPU: 0
> EIP: 0061:[<c01493b1>] Tainted: PF VLI
> EFLAGS: 00010202 (2.6.9-67.0.4.EL.cernxenU)
> EIP is at copy_page_range+0x491/0x52c
> eax: 00000b50 ebx: 4bf99065 ecx: cd098300 edx: 4bf99045
> esi: 00000000 edi: c1156180 ebp: 00010800 esp: cb199ec0
> ds: 007b es: 007b ss: 0068
> Process yum (pid: 2100, threadinfo=cb199000 task=ce250cd0)
> Stack: 4ffc5067 00000000 00000b50 c9438b50 cc5bb250 cb19c250 00000001
> 0b504000 0956a000 cc5ba000 cc735000 cd098344 cce5064c c93bf494 cd098300
> c011a6b8 cd098300 cd098080 cce5064c 00001f9a 00000000 cce50668 cce50670
> cce50658 Call Trace:
> [<c011a6b8>] copy_mm+0x2d9/0x396
> [<c011b26a>] copy_process+0x6b5/0xb0b
> [<c011b7ad>] do_fork+0x8a/0x16b
> [<c012736e>] sigprocmask+0xb6/0xd0
> [<c012741f>] sys_rt_sigprocmask+0x97/0x14c
> [<c0105cff>] sys_clone+0x24/0x28
> [<c010734f>] syscall_call+0x7/0xb
> Code: 89 f9 83 e2 df f6 c4 80 74 03 8b 4f 0c f0 ff 41 04 8b 4c 24 40 ff 81
> 80 00 00 00 f6 47 10 01 74 06 ff 81 84 00 00 00 8b 44 24 08 <89> 70 04 89
> 10 f0 ff 47 08 81 44 24 20 00 10 00 00 8b 54 24 1c
> <0>Fatal exception: panic in 5 seconds
> Kernel panic - not syncing: Fatal exception
>
> Using this xen version : https://rhn.redhat.com/errata/RHSA-2008-0194.html
>
> Any ideas on why this happens?
>
> Thank you,
> Ricardo
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
--
Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/)
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