On Mon, May 16, 2011 at 8:33 AM, Richard Elling <richard.ell...@gmail.com> wrote: > As a rule of thumb, the resilvering disk is expected to max out at around > 80 IOPS for 7,200 rpm disks. If you see less than 80 IOPS, then suspect > the throttles or broken data path.
My system was doing far less than 80 IOPS during resilver when I recently upgraded the drives. The older and newer drives were both 5k RPM drives (WD10EADS and Hitachi 5K3000 3TB) so I don't expect it to be super fast. The worst resilver was 50 hours, the best was about 20 hours. This was just my home server, which is lightly used. The clients (2-3 CIFS clients, 3 mostly idle VBox instances using raw zvols, and 2-3 NFS clients) are mostly idle and don't do a lot of writes. Adjusting zfs_resilver_delay and zfs_resilver_min_time_ms sped things up a bit, which suggests that the default values may be too conservative for some environments. -B -- Brandon High : bh...@freaks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
