Re: Btrfs/RAID5 became unmountable after SATA cable fault

[János Tóth F .]

I tried that after every possible combinations of RO mount failed. I used it in 
the past for an USB attached drive where an USB-SATA adapter had some issues (I 
plugged it into a standard USB2 port even though it expected USB3 power 
current, so a high-current or several standard USB2 ports should have been used 
to prevent it from emergency shutdown during file copy). It worked flawlessly 
then but in this case it threw the same errors as "btrsf check". It couldn't 
even find and list alternative roots. Every tools seemed to give up really fast 
and easy, sometimes with segfaults and tracing messages in the kernel log.On 
Oct 21, 2015 22:26, Chris Murphy <li...@colorremedies.com> wrote:
>
> https://btrfs.wiki.kernel.org/index.php/Restore 
>
> This should still be possible with even a degraded/unmounted raid5. It 
> is a bit tedious to figure out how to use it but if you've got some 
> things you want off the volume, it's not so difficult to prevent 
> trying it. 
>
>
> Chris Murphy