Re: [PATCH v2 3/3] btrfs-progs: device: add remove missing-all

[Anand Jain <anand.jain@oracle.com>]

On 10/16/2017 12:35 PM, Misono, Tomohiro wrote:
> 
> 
> On 2017/10/16 12:30, Anand Jain wrote:
>>
>>
>> On 10/13/2017 01:27 PM, Duncan wrote:
>>> Misono, Tomohiro posted on Wed, 11 Oct 2017 11:18:50 +0900 as excerpted:
>>>
>>>> Add 'btrfs remove missing-all' to remove all the missing devices at once
>>>> for improving usability.
>>>>
>>>> Example:
>>>>    sudo mkfs.btrfs -f -d raid1 /dev/sdb1 /dev/sdb2 /dev/sdb3 /dev/sdb4
>>>>    sudo wipefs -a /dev/sdb1 /dev/sdb3
>>>>    sudo mount -o degraded /dev/sdb2 /mnt <--
>>
>>
>>     I agree with Duncan here. This step itself will fail even with RO
>>     option.

  Correction. RO mount is possible based on which disk you choose to mount.

Thanks - Anand


>> Do you have any patch that is not in the ML which will
>>     make this step a success in the first place ?
>>
>> Thanks, Anand
>>
> 
> commit 21634a19f646 ("btrfs: Introduce a function to check if all chunks a OK
> for degraded rw mount") allow this from 4.14 (I checked on 4.14-rc4).
> But I will withdraw this patch as Duncan suggests.
> 
> Thanks,
> Tomohiro
> 
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