Are the xfs_db and filefrag the utilities to use to determine file fragmentation? # df -k /var/kmem_alloc Filesystem 1K-blocks Used Available Use% Mounted on /dev/sdf1 3905109820 3359385616 545724204 87% /var/kmem_alloc # xfs_db -r -c frag /dev/sdf1 actual 438970, ideal 388168, fragmentation factor 11.57% # ls -l fragmented -rw-r--r--. 1 root root 3360239878657 Oct 13 07:25 fragmented # filefrag fragmented fragmented: 385533 extents found Thanks, -Al -----Original Message----- From: Dave Chinner [mailto:david@xxxxxxxxxxxxx] Sent: Monday, October 12, 2015 9:30 PM To: Al Lau (alau2) Cc: xfs@xxxxxxxxxxx Subject: Re: mkfs.xfs -n size=65536 On Tue, Oct 13, 2015 at 03:55:26AM +0000, Al Lau (alau2) wrote: > To remedy the fragmented files in our production systems, can I run > the xfs_fsr utility to de-fragment the files? Well, first you need to determine that the files are fragmented and that it is affecting performance.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
