On 03/22/11 10:39 AM, Edward Ned Harvey wrote:
So the conclusion to draw is:
Yes, there are situations where ZFS resilver is a strength, and limited by
serial throughput. But for what I call "typical" usage patterns, it's a
weakness, and it's dramatically much worse than resilvering the whole disk
sequentially.
That probably correct. It certainly helps explain my recent experience.
The total data in the pool has remained fairly constant over the past 6
months, but as the pool is on a staging server, it aggregates all of the
churn form the servers that send data to it.
So given the hardware, use and the total data hasn't changed since the
last resilver, the significant increase in resilver time must be down
the increased data fragmentation.
--
Ian.
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
