On Aug 21, 2010, at 9:22 PM, devsk wrote:

> If dedup is ON and the pool develops a corruption in a file, I can never fix 
> it because when I try to copy the correct file on top of the corrupt file,
> the block hash will match with the existing blocks and only reference count 
> will be updated. The only way to fix it is to delete all
> snapshots (to remove all references) and then delete the file and then copy 
> the valid file. This is a pretty high cost if it is so (empirical
> evidence so far, I don't know internal details).
> 
> Has anyone else experienced this?

zfs set dedup=on,verify dataset

IMNSHO, verify should be the default.
 -- richard

-- 
OpenStorage Summit, October 25-27, San Fransisco
http://nexenta-summit2010.eventbrite.comZFS and performance consulting
http://www.RichardElling.com










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