[arch-general] can't balance full btrfs raid6 filesystem

Jameson Pugh imntreal at gmail.com
Sat Feb 20 15:05:51 UTC 2016

On Sat, Feb 20, 2016 at 8:04 AM, Alistair Grant <akgrant0710 at gmail.com> 
> On 20 February 2016 at 02:38, Jameson Pugh <imntreal at gmail.com> wrote:
>>  I have a raid6 btrfs filesystem which I filled up, and added a disk 
>> to:
>>>  sudo btrfs fi show /dev/sdb
>>  Label: 'raid'  uuid: 96c75e11-ab60-44b6-a450-4cd2831f86f0
>>         Total devices 5 FS bytes used 917.77GiB
>>         devid    1 size 465.76GiB used 465.76GiB path /dev/sdb
>>         devid    2 size 465.76GiB used 465.76GiB path /dev/sdc
>>         devid    3 size 465.76GiB used 465.76GiB path /dev/sdd
>>         devid    4 size 931.51GiB used 465.76GiB path /dev/sde
>>         devid    5 size 1.82TiB used 0.00B path /dev/sdf
>>  Despite having removed files, and added the new device, I still 
>> can't
>>  balance the filesystem:
>>  ...
> Did you do it in that order?  How about attempting to remove files
> after adding the new device.
> As Guus said, removing a snapshot is more likely to help than 
> removing files.
> If you haven't already done so, I'd also suggest posting this to the
> linux-btrfs mailing list (see
> https://btrfs.wiki.kernel.org/index.php/Btrfs_mailing_list)

Yes. I've tried removing files after adding the device. Unfortunately, 
there are no snapshots. I could try removing subvolumes. I'll try the 
btrfs list.


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