Re: Defragmentation of large files

2013-05-14 Thread Liu Bo
On Sat, May 11, 2013 at 05:57:11PM +0100, Tim Eggleston wrote: Yes. The command just triggers the defragmentation which takes place in the background. Try a sync afterwards :) Sorry Martin, I should have specified that I wondered if it was like the scrub operation in that respect, so I

Defragmentation of large files

2013-05-11 Thread Tim Eggleston
Hi list, I have a few large image files (VMware workstation VMDKs and TrueCrypt containers) which I routinely back up over the network to a btrfs raid10 volume via bigsync (https://code.google.com/p/bigsync/). The VM images in particular get really fragmented due to CoW, which is expected.

Re: Defragmentation of large files

2013-05-11 Thread Martin Steigerwald
Am Samstag, 11. Mai 2013, 12:27:09 schrieb Tim Eggleston: Hi list, I have a few large image files (VMware workstation VMDKs and TrueCrypt containers) which I routinely back up over the network to a btrfs raid10 volume via bigsync (https://code.google.com/p/bigsync/). The VM images in

Re: Defragmentation of large files

2013-05-11 Thread Tim Eggleston
Yes. The command just triggers the defragmentation which takes place in the background. Try a sync afterwards :) Sorry Martin, I should have specified that I wondered if it was like the scrub operation in that respect, so I left it several hours before running filefrag again (and seeing

Re: Defragmentation of large files

2013-05-11 Thread Martin Steigerwald
Am Samstag, 11. Mai 2013, 17:57:11 schrieb Tim Eggleston: Yes. The command just triggers the defragmentation which takes place in the background. Try a sync afterwards :) Sorry Martin, I should have specified that I wondered if it was like the scrub operation in that respect, so I left