Re: btrfs: open_ctree failed

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Thought I would let you know I did get things figured out. I used
btrfs-progs from github
https://github.com/josefbacik/btrfs-progs

I also used the findroot function from there which generated more
possibilities for the root objectid.
By pluging in the guesses from findroot into -r objectid for the
restore I was able to access the data from my subvolumes.

thanks
Nz

On Tue, Mar 27, 2012 at 8:21 AM, Not Zippy <notzippy@xxxxxxxxx> wrote:
> I had found that note on the restore but my restore.c does not allow
> that flag (it is also missing the "m" flag as well), I used the branch
> dangerousdonteveruse on
> https://git.kernel.org/?p=linux/kernel/git/mason/btrfs-progs.git I
> switched to the master branch to see if there was a difference but it
> does not appear to be any different. (I did find a btrfs-progs on
> git-hub which appears to have those flags, but i thought the best to
> use would be on git.kernel. )
>
> Assuming I can locate the correct restore.c, is there a some other
> software to determine the object id of the subvolume ?  the root
> object id was 5
>
> thanks
> Nz
>
> On Tue, Mar 27, 2012 at 6:02 AM, Hugo Mills <hugo@xxxxxxxxxxxxx> wrote:
>> On Tue, Mar 27, 2012 at 05:58:17AM -0700, Not Zippy wrote:
>>> One entire subvolume was restored. But there were 4 subvolumes on that
>>> partition. Is there a way to specify/force the restore of a different
>>> subvolume ?
>>>
>>> find-root seems to only find a single root.
>>
>>   There is only a single root tree, so that's understandable. If you
>> have a look at the documentation for restore[1], it mentions (right
>> near the bottom of the page) that -r will allow you to select an
>> alternative subvolume to recover from.
>>
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