Could drbd randomly flip bits? Was: Database page corruption on disk occurring during mysqldump on a fresh database and Was: Spontaneous development of supremely large files on different ext3 filesystems
Maurice Volaski
mvolaski at aecom.yu.edu
Mon Sep 17 22:47:33 UTC 2007
I guess I will watch it closely for now and if it trips up again
failover to the drbd peer and see what happens there. I suppose I
could even deattach the local disks and have it run using the peer
over the wire. That should eliminate the local I/O subsystem.
>>It's kind of scary there is no end-to-end parity implemented
>>somewhere along the whole data path to prevent this. It sort of
>>defeats the point of RAID 6 and ECC.
>
>I agree, it's pretty damn scary. You can read about the story and
>the ensuing discussion here:
I wonder if drbd could help out with that.
>Interesting. I hadn't heard of such a thing until I just looked it
>up. But in any case that adds yet another variable (and a fairly
>uncommon one) to the mix.
>
It's this one: http://www.acnc.com/02_01_jetstor_sata_416s.html. I
thought units like it are very popular.
--
Maurice Volaski, mvolaski at aecom.yu.edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University
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