24 Apr
2012
24 Apr
'12
2:08 a.m.
Peter Ross wrote:
The zvol was never running out of disk space, just nearly 100% full. According to other discussions ZFS slows down if it is filling up. That would explain my problem.
IME, and according to #btrfs on freenode, that happens at about 80% full, IOW if you have a 2TB zpool its effective storage capacity is only 1.8TB, since after that it becomes unusably slow. "Unusably" as in "it took me hours to delete a single 20MB daily snapshot, while the system was disconnected from the network entirely and all its other I/Oy processes were turned off."