On Thu, Sep 30, 2010 at 9:08 AM, Jason J. W. Williams < jasonjwwilli...@gmail.com> wrote:
> > Should I be worried about these checksum errors? > > Maybe. Your disks, cabling or disk controller is probably having some issue which caused them. or maybe sunspots are to blame. Run a scrub often and monitor if there are more, and if there is a pattern to them. Have backups. Maybe switch hardware one by one to see if that helps. > What caused the small resilverings on c8t5d0 and c11t5d0 which were not > replaced or otherwise touched? > > It was the checksum errors. ZFS automatically read the good data on other mirrors, and replaced the broken blocks with correct data. If you run zpool clear and zpool scrub you will notice these checksum errors have vanished. If they were caused by botched writes, no new errors should probably appear. If they are botched reads, you can see some new ones appearing :( So, not critical yet but something to keep an eye on. Tuomas
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