On Fri, 11 Apr 2014 10:23:46 -0700 Marc MERLIN <m...@merlins.org> wrote:
> Is anyone else using btrfs on top of dmcrypt and software raid 5? I use Btrfs accessed via NBD over a LAN, physically stored on mdadm RAID5, a setup which is similar to yours in that the block device used for Btrfs has a somewhat limited throughput. But there were no problems with this whatsoever for the past couple of years (other than caused by unrelated h/w issues). > gargamel:/mnt/dshelf2/backup/polgara# time rm -rf current.todel/ > real 1087m26.491s > user 0m2.448s > sys 4m42.012s You could check if this slowness is caused by excessive fsync'ing, try running "time eatmydata rm -rf ....." next time. ( https://launchpad.net/libeatmydata ) -- With respect, Roman
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