Hello fellow BOFH, I also went by that title in a previous life ;)
2012-05-16 21:58, bofh wrote:
Err, why go to all that trouble? Replace one disk per pool. Wait for resilver to finish. Replace next disk. Once all/enough disks have been replaced, turn on autoexpand, and you're done.
As I wrote in the start of the thread, the original pool had 45 250Gb disks laid out as raidz1. This level of redundancy is too small for big disks - i.e. the recent resilver of a 250Gb disk, when it did finally succeed, took 15 hours. It seems likely that a 3Tb disk would take at least 12x time, about a week (likely more) that a raidz1 dataset would remain unprotected in the face of another failure. So an in-place upgrade by autoexpansion would require: 1) keep the raidz1 layout which is unsafe; 2) upgrade all 45 disks which is too much storage for current needs, and a big cost paid for no benefit to the buyer. So this method was ruled out for this situation. Thanks, //Jim _______________________________________________ zfs-discuss mailing list firstname.lastname@example.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss