extend BTRFS partition

extend BTRFS partition

[Lentes, Bernd]

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Hi,

i have a BTRFS partition on a harddisk which is filling up.
I read in the man-pages from btrfs that i can add another harddisk/partition.

Can i do s.th. like "btrfs device add /dev/vda[x] /path_to_BTRFS_filesystem" ?
Is there something to take care off ?

Bernd

-- 

Bernd Lentes 
System Administrator 
Institute for Metabolism and Cell Death (MCD) 
Building 25 - office 122 
HelmholtzZentrum München 
bernd.lentes@helmholtz-muenchen.de 
phone: +49 89 3187 1241 
fax: +49 89 3187 2294 
http://www.helmholtz-muenchen.de/mcd 


Public key: 

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Re: extend BTRFS partition

[Hugo Mills]

On Tue, May 17, 2022 at 08:45:56PM +0200, Lentes, Bernd wrote:
> Hi,
> 
> i have a BTRFS partition on a harddisk which is filling up.
> I read in the man-pages from btrfs that i can add another harddisk/partition.
> 
> Can i do s.th. like "btrfs device add /dev/vda[x] /path_to_BTRFS_filesystem" ?
> Is there something to take care off ?

   That's pretty much it to get the extra space in. Afterwards, you
should also do:

   btrfs balance start -mconvert=raid1,soft /path/to/btrfs/filesystem

which will convert your metadata to RAID-1 and ensure that there's one
copy on each of the two devices (for robustness).

   Hugo.

-- 
Hugo Mills             | emacs: Emacs Makes A Computer Slow.
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