Messages in this thread | | | Date | Sat, 10 Sep 2005 14:39:02 +0200 | From | Lennert Buytenhek <> | Subject | read-from-all-disks support for RAID1? |
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(please CC on replies)
Hi!
I recently had a case where one disk in a two-disk RAID1 array went subtly bad, effectively refusing to write to certain sectors without reporting an error. Basically, parts of the disk went undetectably read-only, causing file system corruption that wouldn't go away after fsck, and all kinds of other fun.
Would it be hard/wise to add an option for RAID1 mode to read from all devices on a read, and report an error to syslog or simply return an I/O error if there is a mismatch? (Or use majority voting and tell people to use 3-disk RAID1 arrays from now on ;-)
thanks, Lennert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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