On Mon, 17 Apr 2006, Andreas Dilger wrote:
You really, really, really need to mount your filesystem with
"-o errors=remount-ro", at least to prevent filesystem corruption.
I'm not sure if this is enough to prevent corruption in the case
of your RAID disconnects (if it doesn't generate errors up to the
filesystem, but still discards writes), but it is at least a minimum
requirement.
Since this was so strongly-worded, I just did a random spot-check of
some of our filesystems (RHEL4) and discovered they all have:
Errors behavior: Continue
in the superblock (and mount apparently takes that option). This makes
me curious: if it's so obvious that it should remount-ro on errors, why
is the default (on RHEL4, at least) to continue?
Damian Menscher
--
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-=#| The above opinions are not necessarily those of my employers. |#=-
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