Re: Btrfs restore error

[Qu Wenruo <quwenruo.btrfs@gmx.com>]

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On 2017年11月17日 11:56, Jay wrote:
> Hello,
> 
> I thought I should report something since there was little information
> on this error. The situation is I have 2 external hard drives on
> Xubuntu. One is not working and I need to move the data over to the
> other.

"btrfs replace" should be your first option, not "btrfs restore", unless
it's totally damaged and you want to salvage as much as possible.


> I used 'sudo btrfs restore -v /dev/sde1 /mnt/Old4TB' and
> received 'Error mkdiring /mnt/Old4TB/Jayda TV:2'.

No extra info like something restored succefully? Just 'Error mkdiring
/mnt/Old4TB/Jayda TV:2'?

At least it's ENOENT, checking mkdir(3p) should gives your the reason:
---
       ENOENT A  component  of the path prefix specified by path does
not name
              an existing directory or path is an empty string.

---

Did the dir "/mnt/Old4TB" exists in first place?

Thanks,
Qu

> I found one forum
> post that said I needed to make the destination folder manually, then
> restore. That did not work. looking at your code 2(%d) is a kernel
> message? not sure what to make of it. I decided to enter a root
> environment with 'sudo su' and the restore worked(the folder still
> existed from previous troubleshoot step). The console is showing files
> being restored. I tried a dry run first which did not show an error.
> Just some feedback and reference.
> 
> uname -a
> 
> Linux emb 4.10.0-38-generic #42-16.04.1-Ubuntu SMP Tue Oct 10 16:21:20
> UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
> 
> btrfs --version
> 
> btrfs-progs v4.4
> 
> Thank you,
> 
> Jayotis
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