Chris Kastorff posted on Thu, 19 Dec 2013 01:26:57 -0800 as excerpted:
> I'm using btrfs in data and metadata RAID10 on drives (not on md or any
> other fanciness.)
>
> I was removing a drive (btrfs dev del) and during that operation, a
> different drive in the array failed. Having not had this happen before,
> I shut down the machine immediately due to the extremely loud piezo
> buzzer on the drive controller card. I attempted to do so cleanly, but
> the buzzer cut through my patience and after 4 minutes I cut the power.
>
> Afterwards, I located and removed the failed drive from the system, and
> then got back to linux. The array no longer mounts ("failed to read the
> system array on sdc"), with nearly identical messages when attempted
> with -o recovery and -o recovery,ro.
This may be a stupid question, but you're missing a drive so the
filesystem will be degraded, but you didn't mention that in your mount
options, so...
Did you try mounting with -o degraded (possibly with recovery, etc, also,
but just try -o degraded plus any normal options first)?
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
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