On 6/9/2011 12:49 AM, Michael Monnerie wrote: > On Mittwoch, 8. Juni 2011 Kenneth wrote: >>> After that, I will make >>> a cron job to run on a regular basis to keep the volume from >>> getting so fragmented again. > > How will you do that? Running xfs_fsr on a regular basis is *not* > recommended, as it will age your filesystem and defrag free space. In > the beginning, and as long as your filesystem is maybe 50% full it will > be fine, but there's a point where it starts to get worse - much worse. > Just run a recent kernel, it has all the naughty stuff to help keep the > performance high. When *is* running xfs_fsr recommended? I scheduled it twice a week some time ago due to a filesystem containing active mbox files. I did so because they became so heavily fragmented in short order, especially those swallowing copious amounts of list mail. Before cron'ing xfs_fsr I was seeing mbox files with over 1000 fragmented extents, and increasing MUA latency as the files became more fragmented. The filesystem is currently 90% free. -- Stan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
