XFS Disk reorganise

I found a fair useful article on defragmenting big xfs filesystems.

Whats useful here is that xfs allows you to defrag whilst the machine is running !

Maintaining your XFS with XFS Filesystem Reorganiser xfs_fsr to defrag | Thushan Fernando Uncut.

tardis:~# xfs_db -c frag -r /dev/cciss/c1d0p1 actual 1004877, ideal 541345, fragmentation factor 46.13% tardis:~# xfs_fsr -t 25200 /dev/cciss/c1d0p1 -v

tardis:~# xfs_db -c frag -r /dev/cciss/c1d0p1

and ill run this tomorrow see what happens