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Re: Adding mirroring to an existing filesystem



On Sun, May 16, 2010 at 8:38 AM, J G <yoosty_cmn@xxxxxxxxx> wrote:
>
>
> --- On Sun, 5/16/10, Donald Gordon <don@xxxxxxxxxx> wrote:
>
>> From: Donald Gordon <don@xxxxxxxxxx>
>> Subject: Adding mirroring to an existing filesystem
>> To: linux-btrfs@xxxxxxxxxxxxxxx
>> Date: Sunday, May 16, 2010, 4:39 AM
>> Hi
>>
>> Is there some way I can add an extra disk as a mirror to an
>> existing
>> btrfs filesystem?  Or must I create a new filesystem
>> with RAID1, and
>> then copy over all my data?
>
> https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices#Adding_New_Devices
>
> I would be sure to back my data up before performing this procedure ;)

You should have good backups and keep having good backups before and
during the use of btrfs.  Period.
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