Hi,

i didnt try mount -o ro, when i tried to mount it via esata i got
kernel panic immediately. Then i conntected enclosure with drives via
usb and tried to mount it :

https://bpaste.net/show/641ab9172539
plugged via usb -> mount randomly one of the drive mount /dev/sda /mnt/brtfs

I was told on irc channel that i should not run btrfs check and if so
i should run it as
btrfs check --repair --init-extent-tree


Also there was recommendation to run btrfs restore before repair.


It was mounted and all worked fine, then i find out that i miss one
nfs mount and find out cubox was dead, so i rebooted it and now i cant
mount that btrfs volume (data r0, metadata in raid1)

I was told that both metadata copies were corrupted?


Still not clear what should i do as next step.


thanks

On Mon, Apr 11, 2016 at 11:16 PM, Chris Murphy <li...@colorremedies.com> wrote:
> On Mon, Apr 11, 2016 at 2:08 PM, lenovomi <lenov...@gmail.com> wrote:
>> Hi,
>>
>>
>> I was running cubox with kernel 4.4.0 and with btrfs raid1 ...
>>
>> not it failed somehow and getting kernel panic during the boot...
>>
>> https://bpaste.net/show/0455daa876de
>>
>> i tried to connect the esata box with 3.x
>>
>> https://bpaste.net/show/98732bc6ce49
>>
>>
>> Any idea? Does it mean that whole volume is dead and i lost ALL THE DATA?
>
> Probably not, but there isn't enough information.
>
> Try 'mount -o ro,recovery' and post all kernel messages for it. If
> that fails, then run 'btrfs check' using a recent btrfs-progs (4.4.1
> or newer hopefully) without --repair, and post those results.
>
> What happened between the last time it mounted OK and when it fails?
> Power failure or just kernel panic and reboot? I don't see the
> complete kernel panic in either of your pastes. Actually the minute
> before the kernel panic might be useful also so I suggest not trimming
> the messages so much.
>
>
> --
> Chris Murphy
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