On 02/19/12 12:33, Robin Axelsson wrote:
What is conspicuous is that there are _no_ errors in iostat:
----------------------------------------
c2d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 0
----------------------------------------
So am I to understand that the cause of this is entirely software
related? If there was an error in the hard drive then iostat should
have returned some errors as well. This is not the first time this
happens to me and last time it happened was on another hard drive.
This is exactly why we have ZFS. iostat only reports errors that the
drive has found. If it or any of the IO path between it and RAM manage
to corrupt the data that was silent data corruption prior to ZFS. With
NFS you now get an error.
Not sure why the counts are different though.
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