[OpenAFS] failed to write to cache items off

Andreas Ladanyi andreas.ladanyi@kit.edu
Thu, 19 May 2016 09:15:44 +0200


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> What filesystem is used for the disk cache?
We use a diskcache  on ext4 filesystem on SSD drive.
>
> -Ben
>
> On Wed, 18 May 2016, Andreas Ladanyi wrote:
>
>> Hi,
>>
>> i found this error in syslog of an ubuntu 14.04.4 client, openafs-clie=
nt
>> from ppa archive:
>>
>> afs: failed to write to CacheItems off 1997620 code -4/80
>> openafs: assertion failed: afs_WriteDCache(tdc, 1) =3D=3D 0, file:
>> /var/lib/dkms/openafs/1.6.17/build/src/libafs/MODLOAD-4.2.0-35-generic=
-SP/afs_dcache.c,
>> line: 1256
>> kernel: [782621.977138] kernel BUG at
>> /var/lib/dkms/openafs/1.6.17/build/src/libafs/MODLOAD-4.2.0-35-generic=
-SP/afs_dcache.c:1256!
>>
>> [<ffffffffc0d43f94>]  [<ffffffffc0d43f94>]
>> afs_GetDownDSlot.constprop.15+0x154/0x180 [openafs]
>> [<ffffffffc0d4444a>] afs_UFSGetDSlot+0x48a/0x5d0 [openafs]
>> [<ffffffffc0d4140f>] afs_FindDCache+0xdf/0x240 [openafs]
>> [<ffffffffc0da7f01>] afs_linux_readpages+0x2b1/0x890 [openafs]
>> [<ffffffffc0d43f94>] afs_GetDownDSlot.constprop.15+0x154/0x180 [openaf=
s]
>>
>> Something seems to be wrong when writing to afs cache.
>>
>> regards,
>> Andreas
>>
>>
>>
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info


--=20

Karlsruher Institut f=FCr Technologie (KIT)
Fakult=E4t f=FCr Informatik
ATIS =96 Abteilung Technische Infrastruktur

Dipl.-Ing. Andreas Ladanyi
- Systemadministrator -

Am Fasanengarten 5, Geb=E4ude 50.34, Raum 013
76131 Karlsruhe

Telefon: +49 721 608 - 4 3663
Fax: +49 721 608 - 4 6699
E-Mail: andreas.ladanyi@kit.edu
www.atis.informatik.kit.edu

www.kit.edu

KIT - Universit=E4t des Landes Baden-W=FCrttemberg und nationales Forschu=
ngszentrum in der Helmholtz-Gemeinschaft

Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert.


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<html>
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    <meta content=3D"text/html; charset=3Dwindows-1252"
      http-equiv=3D"Content-Type">
  </head>
  <body bgcolor=3D"#FFFFFF" text=3D"#000000">
    <blockquote
      cite=3D"mid:alpine.GSO.1.10.1605181842100.26829@multics.mit.edu"
      type=3D"cite">
      <pre wrap=3D"">What filesystem is used for the disk cache?</pre>
    </blockquote>
    We use a diskcache=A0 on ext4 filesystem on SSD drive.<br>
    <blockquote
      cite=3D"mid:alpine.GSO.1.10.1605181842100.26829@multics.mit.edu"
      type=3D"cite">
      <pre wrap=3D"">

-Ben

On Wed, 18 May 2016, Andreas Ladanyi wrote:

</pre>
      <blockquote type=3D"cite">
        <pre wrap=3D"">Hi,

i found this error in syslog of an ubuntu 14.04.4 client, openafs-client
from ppa archive:

afs: failed to write to CacheItems off 1997620 code -4/80
openafs: assertion failed: afs_WriteDCache(tdc, 1) =3D=3D 0, file:
/var/lib/dkms/openafs/1.6.17/build/src/libafs/MODLOAD-4.2.0-35-generic-SP=
/afs_dcache.c,
line: 1256
kernel: [782621.977138] kernel BUG at
/var/lib/dkms/openafs/1.6.17/build/src/libafs/MODLOAD-4.2.0-35-generic-SP=
/afs_dcache.c:1256!

[&lt;ffffffffc0d43f94&gt;]  [&lt;ffffffffc0d43f94&gt;]
afs_GetDownDSlot.constprop.15+0x154/0x180 [openafs]
[&lt;ffffffffc0d4444a&gt;] afs_UFSGetDSlot+0x48a/0x5d0 [openafs]
[&lt;ffffffffc0d4140f&gt;] afs_FindDCache+0xdf/0x240 [openafs]
[&lt;ffffffffc0da7f01&gt;] afs_linux_readpages+0x2b1/0x890 [openafs]
[&lt;ffffffffc0d43f94&gt;] afs_GetDownDSlot.constprop.15+0x154/0x180 [ope=
nafs]

Something seems to be wrong when writing to afs cache.

regards,
Andreas



</pre>
      </blockquote>
      <pre wrap=3D"">_______________________________________________
OpenAFS-info mailing list
<a class=3D"moz-txt-link-abbreviated" href=3D"mailto:OpenAFS-info@openafs=
=2Eorg">OpenAFS-info@openafs.org</a>
<a class=3D"moz-txt-link-freetext" href=3D"https://lists.openafs.org/mail=
man/listinfo/openafs-info">https://lists.openafs.org/mailman/listinfo/ope=
nafs-info</a>
</pre>
    </blockquote>
    <br>
    <p><br>
    </p>
    <pre class=3D"moz-signature" cols=3D"72">--=20

Karlsruher Institut f=FCr Technologie (KIT)
Fakult=E4t f=FCr Informatik
ATIS =96 Abteilung Technische Infrastruktur

Dipl.-Ing. Andreas Ladanyi
- Systemadministrator -

Am Fasanengarten 5, Geb=E4ude 50.34, Raum 013
76131 Karlsruhe

Telefon: +49 721 608 - 4 3663
Fax: +49 721 608 - 4 6699
E-Mail: <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:andreas.lada=
nyi@kit.edu">andreas.ladanyi@kit.edu</a>
<a class=3D"moz-txt-link-abbreviated" href=3D"http://www.atis.informatik.=
kit.edu">www.atis.informatik.kit.edu</a>

<a class=3D"moz-txt-link-abbreviated" href=3D"http://www.kit.edu">www.kit=
=2Eedu</a>

KIT - Universit=E4t des Landes Baden-W=FCrttemberg und nationales Forschu=
ngszentrum in der Helmholtz-Gemeinschaft

Das KIT ist seit 2010 als familiengerechte Hochschule zertifiziert.</pre>=

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