[Linux-cachefs] kslowd issue

[Greg]

Apologies,

I do not know how the previous email came from the completely wrong
address...

Greg

-----Original Message-----
From: linux-cachefs-bounces at redhat.com
[mailto:linux-cachefs-bounces at redhat.com] On Behalf Of Jed Kelly
Sent: Sunday, 13 September 2009 3:19 AM
To: konetzed at quixoticagony.com; 'Linux filesystem caching discussion list'
Subject: RE: [Linux-cachefs] kslowd issue

This is still occurring, even on the very latest kernel....

Sep 12 14:11:17 dnetwww2 cachefilesd[3269]: Refilling cull table Sep 12
14:11:17 dnetwww2 cachefilesd[3269]: Scan complete Sep 12 14:11:47 dnetwww2
cachefilesd[3269]: Refilling cull table Sep 12 14:11:47 dnetwww2
cachefilesd[3269]: Scan complete Sep 12 14:11:47 dnetwww2 cachefilesd[3269]:
Decant (all 4) Sep 12 14:13:58 dnetwww2 Pid: 185, comm: kslowd Not tainted
2.6.31-git2 #1 Sep 12 14:13:58 dnetwww2 Call Trace:
Sep 12 14:13:58 dnetwww2 [<ffffffff8113f2ca>] 0xffffffff8113f2ca Sep 12
14:13:58 dnetwww2 [<ffffffff81032f10>] 0xffffffff81032f10 Sep 12 14:13:58
dnetwww2 [<ffffffff81033189>] 0xffffffff81033189 Sep 12 14:13:58 dnetwww2
[<ffffffff8104f361>] 0xffffffff8104f361 Sep 12 14:13:58 dnetwww2
[<ffffffff8107a25a>] 0xffffffff8107a25a Sep 12 14:13:58 dnetwww2
[<ffffffff8110148d>] 0xffffffff8110148d Sep 12 14:13:58 dnetwww2
[<ffffffff8108cde2>] ? 0xffffffff8108cde2 Sep 12 14:13:58 dnetwww2
[<ffffffff81033194>] ? 0xffffffff81033194 Sep 12 14:13:58 dnetwww2
[<ffffffff8108d140>] 0xffffffff8108d140 Sep 12 14:13:58 dnetwww2
[<ffffffff810b4040>] 0xffffffff810b4040 Sep 12 14:13:58 dnetwww2
[<ffffffff810ff436>] 0xffffffff810ff436 Sep 12 14:13:58 dnetwww2
[<ffffffff810b42b8>] 0xffffffff810b42b8 Sep 12 14:13:58 dnetwww2
[<ffffffff8113c546>] 0xffffffff8113c546 Sep 12 14:13:58 dnetwww2
[<ffffffff8113df42>] ? 0xffffffff8113df42 Sep 12 14:13:58 dnetwww2
[<ffffffff8113cbae>] 0xffffffff8113cbae Sep 12 14:13:58 dnetwww2
[<ffffffff810f8154>] 0xffffffff810f8154 Sep 12 14:13:58 dnetwww2
[<ffffffff810f863a>] 0xffffffff810f863a Sep 12 14:13:58 dnetwww2
[<ffffffff81079351>] 0xffffffff81079351 Sep 12 14:13:58 dnetwww2
[<ffffffff8104f386>] ? 0xffffffff8104f386 Sep 12 14:13:58 dnetwww2
[<ffffffff810790dd>] ? 0xffffffff810790dd Sep 12 14:13:58 dnetwww2
[<ffffffff8104f061>] 0xffffffff8104f061 Sep 12 14:13:58 dnetwww2
[<ffffffff81011b8a>] 0xffffffff81011b8a Sep 12 14:13:58 dnetwww2
[<ffffffff8104efd2>] ? 0xffffffff8104efd2 Sep 12 14:13:58 dnetwww2
[<ffffffff81011b80>] ? 0xffffffff81011b80 Sep 12 14:13:58 dnetwww2
CacheFiles: I/O Error: Readpage failed on backing file 4000000000000810 Sep
12 14:13:58 dnetwww2 FS-Cache: Cache cachefiles stopped due to I/O error

Restarting cachefilesd:


Sep 12 14:16:05 dnetwww2 cachefilesd[3269]: Daemon Terminated Sep 12
14:16:05 dnetwww2 CacheFiles: File cache on sdb1 unregistering Sep 12
14:16:05 dnetwww2 FS-Cache: Withdrawing cache "mycache"
Sep 12 14:16:06 dnetwww2 FS-Cache: Cache "mycache" added (type cachefiles)
Sep 12 14:16:06 dnetwww2 CacheFiles: File cache on sdb1 registered Sep 12
14:16:06 dnetwww2 cachefilesd[4338]: About to bind cache Sep 12 14:16:06
dnetwww2 cachefilesd[4338]: Bound cache Sep 12 14:16:06 dnetwww2
cachefilesd[4339]: Daemon Started Sep 12 14:16:06 dnetwww2
cachefilesd[4339]: Scan complete Sep 12 14:16:06 dnetwww2 cachefilesd[4339]:
Decant (all 4096) Sep 12 14:16:06 dnetwww2 Pid: 185, comm: kslowd Not
tainted 2.6.31-git2 #1 Sep 12 14:16:06 dnetwww2 Call Trace:
Sep 12 14:16:06 dnetwww2 [<ffffffff8113f2ca>] 0xffffffff8113f2ca Sep 12
14:16:06 dnetwww2 [<ffffffff81032f10>] 0xffffffff81032f10 Sep 12 14:16:06
dnetwww2 [<ffffffff81033189>] 0xffffffff81033189 Sep 12 14:16:06 dnetwww2
[<ffffffff8104f361>] 0xffffffff8104f361 Sep 12 14:16:06 dnetwww2
[<ffffffff8107a25a>] 0xffffffff8107a25a Sep 12 14:16:06 dnetwww2
[<ffffffff8110148d>] 0xffffffff8110148d Sep 12 14:16:06 dnetwww2
[<ffffffff8108cde2>] ? 0xffffffff8108cde2 Sep 12 14:16:06 dnetwww2
[<ffffffff81033194>] ? 0xffffffff81033194 Sep 12 14:16:06 dnetwww2
[<ffffffff8108d140>] 0xffffffff8108d140 Sep 12 14:16:06 dnetwww2
[<ffffffff810b4040>] 0xffffffff810b4040 Sep 12 14:16:06 dnetwww2
[<ffffffff810ff436>] 0xffffffff810ff436 Sep 12 14:16:06 dnetwww2
[<ffffffff810b42b8>] 0xffffffff810b42b8 Sep 12 14:16:06 dnetwww2
[<ffffffff8113c546>] 0xffffffff8113c546 Sep 12 14:16:06 dnetwww2
[<ffffffff8113df42>] ? 0xffffffff8113df42 Sep 12 14:16:06 dnetwww2
[<ffffffff8113cbae>] 0xffffffff8113cbae Sep 12 14:16:06 dnetwww2
[<ffffffff810f8154>] 0xffffffff810f8154 Sep 12 14:16:06 dnetwww2
[<ffffffff810f863a>] 0xffffffff810f863a Sep 12 14:16:06 dnetwww2
[<ffffffff81079351>] 0xffffffff81079351 Sep 12 14:16:06 dnetwww2
[<ffffffff8104f386>] ? 0xffffffff8104f386 Sep 12 14:16:06 dnetwww2
[<ffffffff810790dd>] ? 0xffffffff810790dd Sep 12 14:16:06 dnetwww2
[<ffffffff8104f061>] 0xffffffff8104f061 Sep 12 14:16:06 dnetwww2
[<ffffffff81011b8a>] 0xffffffff81011b8a Sep 12 14:16:06 dnetwww2
[<ffffffff8104efd2>] ? 0xffffffff8104efd2 Sep 12 14:16:06 dnetwww2
[<ffffffff81011b80>] ? 0xffffffff81011b80 Sep 12 14:16:06 dnetwww2
CacheFiles: I/O Error: Readpage failed on backing file 4000000000000830 Sep
12 14:16:06 dnetwww2 FS-Cache: Cache cachefiles stopped due to I/O error

David, are you able to assist? The FS-cache is incredibly important to us,
even happy to pay to cover your time if that is an issue.

Thanks,

Greg


-----Original Message-----
From: linux-cachefs-bounces at redhat.com
[mailto:linux-cachefs-bounces at redhat.com] On Behalf Of Edward "Koko"
Konetzko
Sent: Saturday, 5 September 2009 1:55 AM
Cc: 'Linux filesystem caching discussion list'
Subject: Re: [Linux-cachefs] kslowd issue

Greg wrote:
> Hi Edward,
>
> I have seen a number of people posting about this same bug - myself 
> included, but we have yet to hear any info from David on how to proceed.
>
> Thanks,
>
> Greg
>
>   
Has anyone found a reproducible way of triggering the error?  I can get it
to happen every now and then with postmark but nothing reliable enough to be
able to reproduce on demand.

Thanks
Edward

--
Linux-cachefs mailing list
Linux-cachefs at redhat.com
https://www.redhat.com/mailman/listinfo/linux-cachefs

--
Linux-cachefs mailing list
Linux-cachefs at redhat.com
https://www.redhat.com/mailman/listinfo/linux-cachefs