Speeding up ZFS Resilver/Scrubs

[packetboy]

Has anyone tried this?

http://broken.net/uncategorized/zfs-performance-tuning-for-scrubs-and-resilvers/

"These modifications speed up my scrub/resilver operations from taking a approximately two months, to approximately two to three hours depending on the individual system."

This would solve one of my few beefs with ZFS.

 

[Sycraft]

Interesting. The resilver time was one of the reasons we dumped ZFS, the other being that Oracle utterly stopped all OpenSolaris support.

Unfortunately, we don't have any ZFS systems anymore to test it on, and we aren't going to go back given all the trouble we had. NTFS or XFS on RAID-6 just works much better :/.

 

[staticlag]

A recent scrub with 9+TB of data across 10 disks in -Z2 config gave me 931MB/sec for 3 hours.

Solaris 11

 

[patrickdk]

I've tried those values, and some modified form of them, they haven't made a dent in my scrub times at all. But my system is probably just too taxed.