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Re: 2.6.30 panic - xfs_fs_destroy_inode

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: 2.6.30 panic - xfs_fs_destroy_inode
From: Patrick Schreurs <patrick@xxxxxxxxxxxxxxxx>
Date: Sat, 20 Jun 2009 18:31:01 +0200
Cc: "linux-xfs@xxxxxxxxxxx" <linux-xfs@xxxxxxxxxxx>, Tommy van Leeuwen <tommy@xxxxxxxxxxxxxxxx>
In-reply-to: <7028E3E6-033A-416D-B046-286520CA457A@xxxxxxxxxxx>
Organization: News-Service.com
References: <4A392213.4020200@xxxxxxxxxxxxxxxx> <4A3960A0.8090707@xxxxxxxxxxx> <4A39F2E6.5020205@xxxxxxxxxxxxxxxx> <4A3CB765.8040600@xxxxxxxxxxxxxxxx> <7028E3E6-033A-416D-B046-286520CA457A@xxxxxxxxxxx>
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Just had another one. It's likely we'll have to downgrade to 2.6.28.x.

These servers have 28 SCSI disks mounted separately (JBOD). The workload is basically i/o load (90% read, 10% write) from these disks. The servers are not extreme busy (overloaded).

xfs_info from a random disk:

sb02:~# xfs_info /dev/sdb
meta-data=/dev/sdb isize=256 agcount=4, agsize=18310547 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=73242187, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=32768, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

As you can see we use lazy-count=1. Mount options aren't very exotic: rw,noatime,nodiratime

We are seeing these panic's on at least 3 different servers.

If you have any hints on how to investigate, we would greatly appreciate it.


Eric Sandeen wrote:
Others aren't hitting this, what sort of workload are you running when you hit it?

I have not had time to look at it yet but some sort of testcase may greatly help.


On Jun 20, 2009, at 5:18 AM, Patrick Schreurs <patrick@xxxxxxxxxxxxxxxx> wrote:

Unfortunately another panic. See attachment.

Would love to receive some advice on this issue.

Thanks in advance.


Patrick Schreurs wrote:
Eric Sandeen wrote:
Patrick Schreurs wrote:
Hi all,

We are experiencing kernel panics on servers running 2.6.29(.1) and 2.6.30. I've included two attachments to demonstrate.

The error is:
Kernel panic - not syncing: xfs_fs_destroy_inode: cannot reclaim ...

OS is 64bit Debian lenny.

Is this a known issue? Any comments on this?

It's not known to me, was this a recent upgrade?  (IOW, did it start
with .29(.1)?
We've seen this on 2 separate servers. It probably happened more often, but we didn't captured the panic message. One server was running, the other server was running 2.6.30. Currently we've updated all similar servers to 2.6.30. If we can provide you with more details to help fix this issue, please let us know.
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