On 2011-Aug-08 17:12:15 +0800, Andrew Gabriel <andrew.gabr...@oracle.com> wrote: >periodic scrubs to cater for this case. I do a scrub via cron once a >week on my home system. Having almost completely filled the pool, this >was taking about 24 hours. However, now that I've replaced the disks and >done a send/recv of the data across to a new larger pool which is only >1/3rd full, that's dropped down to 2 hours.
FWIW, scrub time is more related to how fragmented a pool is, rather than how full it is. My main pool is only at 61% (of 5.4TiB) and has never been much above that but has lots of snapshots and a fair amount of activity. A scrub takes around 17 hours. This is another area where the mythical block rewrite would help a lot. -- Peter Jeremy
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