> I have a Thumper (ok, actually 3) with each having one large pool, multiple > filesystems and many snapshots. They are holding rsync copies of multiple > clients, being synced every night (using snapshots to keep 'incremental' > backups). > > I'm wondering how often (if ever) I should do scrubs of the pools, or if > the internal zfs integrity is enough that I don't need to do manual scrubs > of the pool? I read through a number of tutorials online as well as the zfs > wiki entry, but I didn't see anything very pertinent. Scrubs are I/O > intensive, but is the Pool able to be used normally during a scrub? I > think the answer is yes, but some confirmation helps me sleep at night.
Scrubs are the lowest priority, so I understand it should theoretically work fine. We've got two 48TB thumpers, with a nightly rsync from the main to the reserve. I'm currently running a scrub every Friday at 23:02, which last week took 5h15 to scrub the 7TB of used data (about 5TB of real, 2TB of snapshots) on the single pool. That's about 380MBytes/second. -- "09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0" Paul Weaver Systems Development Engineer News Production Facilities, BBC News _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
