Hi Chris, thanks for your answer, On 12/09/2016 03:58 AM, Chris Murphy wrote: > Can you check some bigger files and see if they've become fragmented? > I'm seeing 1.4GiB files with 2-3 extents reported by filefrag, go to > over 5000 fragments during dedupe. This is not something I recall > happening some months ago. I have checked directories containing VM hard disks, that would be good candidates. As they're backed up using full rsyncs, I wouldn't expect them to be heavily fragmented (OTOH the whole BTRFS filesystem is lzo compressed, and I believe that it may affect the number of extents reported by filefrag...?) Anyway this is the number of fragments that I get for a bunch of VMS HD files which are in the range from a couple GB to about 20 GB. The number of fragments reported by filefrag : 2907, 2560, 314, 10107 If compression has nothing to do with this, then this is heavy fragmentation. Kind regards. ॐ -- Swâmi Petaramesh <swami@xxxxxxxxxxxxxx> PGP 9076E32E -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
