An anonymous kernel developer sends this link: http://en.wikipedia.org/wiki/Error_recovery_control
On 06/11/2013 08:32, Loic Dachary wrote: > Hi Ceph, > > People from Western Digital suggested ways to better take advantage of the > disk error reporting. They gave two examples that struck my imagination. > First there are errors that look like the disk is dying ( read / write > failures ) but it's only a transient problem and the driver should be able to > make the difference by properly interpreting the available information. They > said that the prolonged life you get if you don't decommission a disk that > only has a transient error is significant. The second example is when one > head out of ten fails : disks can keep working with the nine remaining heads. > Losing 1/10 of the disk is likely to result in a full re-install of the Ceph > osd. But, again, the disk could keep going after that, with 9/10 of its > original capacity. And Ceph is good at handling osd failures. > > All this is news to me and sounds really cool. But I'm sure there are people > who already know about it and I'm eager to hear their opinion :-) > > Cheers > > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Loïc Dachary, Artisan Logiciel Libre
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