[OpenAFS] afs-clien on afs-server hangs ... (again !)

[Paul Blackburn]

Greuss Gott Hans,

Are you using the backup system that is supplied with AFS
or something else?

If the answer is "something else", are you seeing this problem
on the machine that does the backup?

If so, I guess that your backup is trying to access all the data
in your AFS cell through the cache on this one machine.

Would that be a correct guess?
--
cheers
paul                             http://acm.org/~mpb

Baus, Hans-Joerg wrote:

>
> with /var/log/messages:
>
> Jan 12 01:03:32 geeko kernel: Increase -stat parameter of afsd(VLRU
> cycle?)<1>Unable to handle kernel paging request at virtual address
> ffffffff
> Jan 12 01:03:32 geeko kernel:  printing eip:
> Jan 12 01:03:32 geeko kernel: e08e75b1
> Jan 12 01:03:32 geeko kernel: *pde = 00001063
> Jan 12 01:03:32 geeko kernel: *pte = 00000000
> Jan 12 01:03:32 geeko kernel: Oops: 0002
> Jan 12 01:03:32 geeko kernel: CPU:    0
> Jan 12 01:03:32 geeko kernel: EIP:    0010:[<e08e75b1>]    Not tainted
> Jan 12 01:03:32 geeko kernel: EFLAGS: 00010286
> Jan 12 01:03:32 geeko kernel: eax: 0000002d   ebx: e090e550   ecx:
> dcf6c000   edx: 00000000
> Jan 12 01:03:32 geeko kernel: esi: cec9dd24   edi: dcf6de04   ebp:
> 00007d02   esp: dcf6dccc
> Jan 12 01:03:32 geeko kernel: ds: 0018   es: 0018   ss: 0018
> Jan 12 01:03:32 geeko kernel: Process save (pid: 28552,
> stackpage=dcf6d000)
> Jan 12 01:03:32 geeko kernel: Stack: e08ffe60 e08c71ee 00000010 00000246
>
> ffffff0b e08c7246 00000010 e08c721d
> Jan 12 01:03:32 geeko kernel:        e08ffe60 e08c71ee 00000010 00000246
>
> e096ca00 00000000 dcf6de04 dcf6c000
> Jan 12 01:03:32 geeko kernel:        e131e3c0 cec9dc00 00000005 e08d0b74
>
> dcf6de04 00000000 00000000 e08d0be4
> Jan 12 01:03:32 geeko kernel: Call Trace:    [<e08ffe60>] [<e08c71ee>]
> [<e08c7246>] [<e08c721d>] [<e08ffe60>]
> Jan 12 01:03:32 geeko kernel:   [<e08c71ee>] [<e08d0b74>] [<e08d0be4>]
> [<e08bd205>] [<e08bd249>] [<e08bcf57>]
> Jan 12 01:03:32 geeko kernel:   [<e08d251c>] [<e08d258d>] [<e08efbef>]
> [<e08f2d09>] [<c0135e8b>] [<c01365b7>]
> Jan 12 01:03:32 geeko kernel:   [<c0135c0d>] [<c0136856>] [<c0136be1>]
> [<c0133d4d>] [<c010867b>]
> Jan 12 01:03:32 geeko kernel:
> Jan 12 01:03:32 geeko kernel: Code: c6 05 ff ff ff ff 2a 83 c4 10 83 c4
> 0c c3 90 55 57 56 53 8b
>
>
> I have had the same problem a few months ago and increased the -stat
> parameter (thanks to Derek Atkins!)to
>
> OPTIONS="-stat 16000 -dcache 4000 -daemons 6 -volumes 256 -files 50000"
>
> and the cache (/usr/vice/etc/cacheinfo) to
>
> /afs:/usr/vice/cache:200000
>
>
> Now the problem is back - and i changed the parameters now to
>
> OPTIONS="-stat 32000 -dcache 6000 -daemons 6 -volumes 256 -files 50000"
>
> /afs:/usr/vice/cache:300000
>
> and i guess it may work for a few months more... but i guess also that
> our networker backup software is somehow involved with the problem and
> the amount of data grows further and the problem comes back again...
>
>
> Has anyone had the some experience (with legato networker)?
>
> Could an upgrade to 1.2.8 help (my System is linux-2.4.19-xfs)?
>
> Thank You All For Your Help!
>
>
> -- Jörg
>
> Dipl.-Ing. Jörg Baus
> Krauss-Maffei Wegmann GmbH&Co.KG
> Abteilung W-AS 22
> Systemmanagement
>
> Hausadresse:                 Postfachadresse:
> Krauss-Maffei-Str. 11        Postfach 500240
> 80997 München                80972 München
>
> Tel.:  ++49 (89) 8140-4025
> Fax:   ++49 (89) 8140-4912
> Email: joerg.baus@kmweg.de
>
>
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info