On Sat, 19 Jan 2013, Jim Klimov wrote:

On 2013-01-19 18:17, Bob Friesenhahn wrote:
Resilver may in fact be just verifying that the pool disks are coherent
via metadata.  This might happen if the fiber channel is flapping.

Correction: that (verification) would be scrubbing ;)

I don't think that zfs would call it scrubbing unless the user requested scrubbing. Unplugging a USB drive which is part of a mirror for a short while results in considerable activity when it is plugged back in. It is as if zfs does not trust the device which was temporarily unplugged and does a full validation of it.

Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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