zfs functions (mont -a, list, zpool status) extremely slow

[Pentium100MHz]

Hi,

Our backup server crashed (kernel panic) and I rebooted it, it took three hours to come back online and that was because automounting of datasets took pretty much the entire time. During that time, the activity indicators on the hard drives indicated that the hard drives were idle, with some activity every few seconds.

In addition to that, all zfs functions take up long times.

'zfs list' takes 37 seconds and returns 550 entries
'zfs list -t snapshot' takes 2 minutes 47 seconds and returns 3391 entries
'zpool status' takes 18 seconds (increases if the hard drives are actually used)..

During that time, the hard drives are not fully utilized, according to iostat, the most utilization is around 10%.

OS is CentOS 6.4
ZFS version is 0.6.2
This is because 0.6.3 has more issues as does newer CentOS 6.x in conjunction with zfs.

Is there a way to speed this up?

[Pentium100MHz]

OK, so I lost the ability to recognize things that do not belong here. Sorry.

[Pentium100MHz]

After the problems with 0.6.3 (and newer CenOS) I'm kinda worried about updating it on this server. But yea, that makes sense. I have posted my question on the mailing list and will see if I can updae the server (and not make things worse).