From mboxrd@z Thu Jan  1 00:00:00 1970
From: Brian May <brian@vpac.org>
Subject: open sleeps
Date: Fri, 20 Jun 2008 09:14:46 +1000
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Hello,

I am having (weird) issues with XFS, in that open(...) on certain files 
takes 45 seconds to return. After the file has been opened, the next 
file in the same directory takes 45 seconds. If the file was recently 
opened it returns immediately.

I thought this was a low level I/O issue, so copied the files in 
question to a completely independent RAID array (separate LVM, RAID, 
controllers, disks), but the problem remains.

I raised the issue on the XFS mailing list and was told the problem was 
the the lease breaking code in VFS[2], and that I should contact this 
mailing list.

This is with the kernel in Debian/Stable:

hq:/tmp# uname -a
Linux hq 2.6.18-6-686 #1 SMP Sun Feb 10 22:11:31 UTC 2008 i686 GNU/Linux

More details:
[1] <http://lists.luv.asn.au/wws/arc/luv-main/2008-06/msg00143.html>
[2] <http://oss.sgi.com/archives/xfs/2008-06/msg00222.html>

Any ideas?

Please CC me responses.

Thanks.

Brian May