Dave Chinner put forth on 9/11/2010 3:23 AM: > On Sat, Sep 11, 2010 at 07:55:32AM +0100, John Lister wrote: >> Stan Hoeppner wrote on 9/10/2010 14:00 >>>> On 10/09/2010 15:41, John Lister wrote: >>> Try unmounting and remounting the filesystem, and see if the various >>> tools all report the same thing afterwards. This solved the exact same >>> problem for me very recently, though I'm on kernel 2.6.34.1 and xfsprogs >>> 2.9.8. >> >> Cheers, that got rid of most of it, there is still a slight >> discrepency (50 extra fragments) which I can live with. > > xfs_db used buffered IO on the block device, which is not coherent > with the filesystem. If you are using it on an active filesystem, > then running "echo 1 > /proc/sys/vm/drop_caches" before you run > xfs_db should make it read from disk at least once.... That's good to know Dave. Thanks. I created a short-name script a while back with "echo 3 > /proc/sys/vm/drop_caches" merely so I could "clear the baffles" now and then. Looks like it now has multiple uses (if I can just remember to use it in this context). Out of curiosity, who here schedules automatic xfs_fsr runs, and with what frequency? Currently I just run it manually now and then when performance starts to seem sluggish. Thanks. -- Stan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
