open sleeps

[Brian May <brian@xxxxxxxx>]

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.
More details at thread starting from 
<http://lists.luv.asn.au/wws/arc/luv-main/2008-06/msg00143.html>.
Any ideas?

Please CC me responses.

Thanks.

Brian May