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1. xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe <s.priebe@xxxxxxxxxxxx>; Date: Sat, 10 Sep 2011 14:23:12 +0200; Hello List, on some of our heavy loaded servers using xfs we're seeing a deadlock where reading/writing to the xfs filesystem suddenly stops working. Here you can find sysrq w triggered log messages; /archives/xfs-masters/2011-09/msg00003.html (6,380 bytes)
2. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Date: Mon, 12 Sep 2011 11:21:33 -0400; What kind of workload are you running? Also did the workload run fine with an older kernel, and if yes which one?; /archives/xfs-masters/2011-09/msg00004.html (8,108 bytes)
3. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe <s.priebe@xxxxxxxxxxxx>; Date: Mon, 12 Sep 2011 18:46:26 +0200; Hi, Mysql, Web, Mail, ftp ;-) yes it was with 2.6.32. I upgraded from that version. Stefan; /archives/xfs-masters/2011-09/msg00005.html (7,841 bytes)
4. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Date: Mon, 12 Sep 2011 16:05:43 -0400; Just curious, is this the same system that also shows the freezes reported to the scsi list? If I/Os don't get completed by lower layers I can see how we get everything in XFS waiting on the log rese; /archives/xfs-masters/2011-09/msg00006.html (8,269 bytes)
5. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Tue, 13 Sep 2011 08:04:36 +0200; Hi, Mysql, Web, Mail, ftp ;-) yes it was with 2.6.32. I upgraded from that version. Just curious, is this the same system that also shows the freezes reported to the scsi list? If I/Os don't get comp; /archives/xfs-masters/2011-09/msg00007.html (11,828 bytes)
6. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Tue, 13 Sep 2011 21:31:13 +0200; Am 13.09.2011 08:04, schrieb Stefan Priebe - Profihost AG: Hi, Mysql, Web, Mail, ftp ;-) yes it was with 2.6.32. I upgraded from that version. Just curious, is this the same system that also shows th; /archives/xfs-masters/2011-09/msg00008.html (11,260 bytes)
7. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Date: Tue, 13 Sep 2011 16:50:18 -0400; That points a bit more towards XFS, although we've seen storage setups create issues depending on the exact workload. The prime culprit for used to be the md software RAID driver, though. Oops, that'; /archives/xfs-masters/2011-09/msg00009.html (11,011 bytes)
8. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Wed, 14 Sep 2011 09:26:18 +0200; Hi, Some more informations: 1.) It's running with 2.6.32 and 2.6.38 2.) I can also write to another ext2 part on the same disk array(aacraid driver) while xfs stucks - so i think it must be an xfs pr; /archives/xfs-masters/2011-09/msg00013.html (11,938 bytes)
9. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Wed, 14 Sep 2011 09:48:18 +0200; Hi, Oops, that's a bug that I actually introduced myself. Fix below: Thanks for the patch. Now we have the following situation: 1.) Systems running fine with 2.6.32, 2.6.38 and with 3.1 rc-6 + patch; /archives/xfs-masters/2011-09/msg00014.html (19,721 bytes)
10. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Wed, 14 Sep 2011 10:49:20 +0200; Hi, Am 14.09.2011 09:48, schrieb Stefan Priebe - Profihost AG: Hi, Oops, that's a bug that I actually introduced myself. Fix below: Thanks for the patch. Now we have the following situation: 1.) Syst; /archives/xfs-masters/2011-09/msg00015.html (10,895 bytes)
11. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Date: Wed, 14 Sep 2011 10:30:05 -0400; This means you are running your heavy load with lockdep enabled. I can't see how it directly causes your issues, but it will slow anything down to almost a grinding halt on systems with more than say; /archives/xfs-masters/2011-09/msg00016.html (10,660 bytes)
12. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Date: Wed, 14 Sep 2011 10:30:21 -0400; That's the lockdep code.; /archives/xfs-masters/2011-09/msg00017.html (10,827 bytes)
13. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Wed, 14 Sep 2011 18:06:00 +0200; Hi, This means you are running your heavy load with lockdep enabled. I can't see how it directly causes your issues, but it will slow anything down to almost a grinding halt on systems with more than; /archives/xfs-masters/2011-09/msg00019.html (12,156 bytes)
14. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Sun, 18 Sep 2011 11:14:08 +0200; Hi, at least i'm now able to reproduce the issue. I hope this will help to investigate the issue and hopefully you can reproduce it as well. I'm using vanilla 3.0.4 kernel + xfs as root filesystem an; /archives/xfs-masters/2011-09/msg00025.html (11,121 bytes)
15. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Date: Sun, 18 Sep 2011 16:04:38 -0400; Thanks a lot for the reproducer! I've tried it on my laptop SSD and that didn't reproduce it yet. I'll try it on monday on a real high end setup.; /archives/xfs-masters/2011-09/msg00027.html (11,257 bytes)
16. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Dave Chinner <david@xxxxxxxxxxxxx>; Date: Mon, 19 Sep 2011 09:02:45 +1000; If it is a log space accounting issue, then the output of 'xfs_info <mtpt>' is really necessary to set the filesystem up the same way (e.g. same log size, number of AGs, etc) so that it behaves the s; /archives/xfs-masters/2011-09/msg00029.html (11,465 bytes)
17. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Mon, 19 Sep 2011 12:54:37 +0200; at least i'm now able to reproduce the issue. I hope this will help to investigate the issue and hopefully you can reproduce it as well. I'm using vanilla 3.0.4 kernel + xfs as root filesystem and ha; /archives/xfs-masters/2011-09/msg00030.html (12,732 bytes)
18. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe <s.priebe@xxxxxxxxxxxx>; Date: Tue, 20 Sep 2011 02:47:12 +0200; Am 19.09.2011 um 01:02 schrieb Dave Chinner <david@xxxxxxxxxxxxx>: I can't get it. It just works on some part. and not on the other. Even xfs_info shows the same for them. Also i have one part where; /archives/xfs-masters/2011-09/msg00032.html (12,430 bytes)
19. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe <s.priebe@xxxxxxxxxxxx>; Date: Tue, 20 Sep 2011 03:01:19 +0200; Am 20.09.2011 um 02:47 schrieb Stefan Priebe <s.priebe@xxxxxxxxxxxx>: So works means here reproducing it with bonnie++. So i can reproduce it still very fast but i don't know how to create a testcase; /archives/xfs-masters/2011-09/msg00033.html (10,805 bytes)
20. Re: xfs deadlock in stable kernel 3.0.4 (score: 1): Author: Stefan Priebe - Profihost AG <s.priebe@xxxxxxxxxxxx>; Date: Tue, 20 Sep 2011 12:09:34 +0200; Hi, any idea how to get deeper into this? I've tried using kgdb but strangely the error does not occur when kgdb is remote attached. When i unattach kgdb and restart bonnie the error happens again. S; /archives/xfs-masters/2011-09/msg00034.html (10,633 bytes)

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