So far, no problems with concurrent scrubs of three pools. Performance of the computer feels fine. One pool on each of the following:
- Seagate ST750LX003-1AC154, internal to a MacBookPro5,2 with 8 GB memory running OS X 10.8.2 (around 100 GB of the disk given to JHFS+ for the OS and apps; CoreStorage encrypting both JHFS+ and ZFS file systems)
- StoreJet Transcend (0x2329) in the frontmost USB port
- Sitecom USB 2.0 Dock CN-022 (0x0022) in the rearmost port (separate bus) with a Seagate GoFlex Desk (0x50a5).
YMMV.
I'm very pleased to note that following eject then reconnection of an external disk, scrub will resume. (Before now, I wondered whether the automated resume applied only to checkups that were initiated using the ZEVO pane of System Preferences.)
Screen recording etc. at http://www.wuala.com/grahamperrin/publi ... de=gallery
- Code: Select all
macbookpro08-centrim:bin gjp22$ zpool status | grep "to go"
51.8Gi scanned out of 380Gi at 28.7Mi/s, 3h15m to go
37.6Gi scanned out of 1.75Ti at 20.9Mi/s, 23h54m to go
40.8Gi scanned out of 555Gi at 19.9Mi/s, 7h22m to go
macbookpro08-centrim:bin gjp22$ date
Wed 10 Oct 2012 07:31:58 BST
macbookpro08-centrim:bin gjp22$ zpool status | grep "to go"
62.8Gi scanned out of 380Gi at 28.3Mi/s, 3h11m to go
48.1Gi scanned out of 1.75Ti at 21.7Mi/s, 22h48m to go
51.9Gi scanned out of 555Gi at 23.7Mi/s, 6h2m to go
macbookpro08-centrim:bin gjp22$ date
Wed 10 Oct 2012 07:41:43 BST
macbookpro08-centrim:bin gjp22$ zpool status | grep "to go"
69.0Gi scanned out of 380Gi at 24.7Mi/s, 3h34m to go
64.1Gi scanned out of 1.75Ti at 23.0Mi/s, 21h20m to go
66.1Gi scanned out of 555Gi at 24.2Mi/s, 5h45m to go
macbookpro08-centrim:bin gjp22$ zpool list
NAME SIZE ALLOC FREE CAP HEALTH ALTROOT
gjp22 572Gi 381Gi 191Gi 66% ONLINE -
tall 1.82Ti 1.75Ti 70.5Gi 96% ONLINE -
zhandy 592Gi 555Gi 36.8Gi 93% ONLINE -
macbookpro08-centrim:bin gjp22$
(For two of the three: the percentages currently and previously used have a negative impact on current performance. That should be a separate topic.)