On Tue, Nov 01, 2011 at 08:36:00PM +0100, Helmut Hullen wrote:
> Hallo,
>
> I'm just playing with "btrfs scrub".
>
> Kernel 3.1 (self made)
> btrfs integration-20111030 (Hugo Mills)
>
> I have a bundle of 3 2-TByte-disks (data raid0, metadata raid1).
>
> Since some (few) weeks one of the disks makes errors (I've reported the
> problems in this mailing list).
>
> The bundle uses the devices /dev/sdb1, /dev/sdc1 and /dev/sdg1, "btrfs
> filesystem show" shows these informations.
>
> Mounting doesn't work immediately; most times I have to run the "mount"
> command three times - strange.
To be able to run mount only once you have to run 'btrfs dev scan' on
startup (after each reboot or just before mounting). If that's not an
option you can use -o devices mount option.
>
> When I run
>
> btrfs scrub start -r /dev/sdb1
>
> (or another of the three disks) then I only get the error message
>
> ERROR: getting dev info for scrub failed: Inappropriate ioctl for
> device
Scrubber runs on a mounted filesystem.
Thanks,
Ilya
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