Re: problem with long running btrfs mount operation

[Hugo Mills <hugo@carfax.org.uk>]

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On Tue, Sep 22, 2015 at 04:57:35PM +0200, Holger Hoffstätte wrote:
> On 09/22/15 16:43, S. Fricke wrote:
> >> On Tue, Sep 22, 2015 at 9:53 AM, Holger Hoffstätte
> >> <holger.hoffstaette@googlemail.com> wrote:
> >>> On 09/22/15 15:38, S. Fricke wrote:
> >>>> I have a problem with one of my btrfs hdds. If I mount it, it needs more than
> >>>> 135 minutes for this operation. After the mounting it works normaly. This is
> >>>> reproducible only with this hdd.
> >>>>
> >>>> Maybe someone has a clue what is going wrong here.
> >>>
> >>> On remount it tries to continue a previously started balance, which fails with
> >>> an error (as can be seen at the end of your log). You should:
> >>>
> >>> a) immediately stop what you're doing on that fs and unmount it
> >>> b) get btrfs-progs-4.2.1 (not 4.2) and see what it says
> > 
> > What should it say to me? I have to send a command? Should I try to mount the
> > device after I have unmount it? BTW: Is btrfs-progs needed for mounting?
> 
> I should have been more clear and say "run btrfs check", which I originally
> intended to write but then somehow didn't. Sorry. :-)
> 
> btrfs-progs is not needed for mounting, only for administrative commands.

   Well, technically, it's useful (but not absolutely essential) to
have btrfs dev scan for setting up multi-device filesystems before
mount.

   Hugo.

-- 
Hugo Mills             | What's a Nazgûl like you doing in a place like this?
hugo@... carfax.org.uk |
http://carfax.org.uk/  |
PGP: E2AB1DE4          |                                                Illiad

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