btrfs and raid1 (restore)

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Hi,

I made a REALLY bad mistake today.

I've two hdds which are running at raid1 via btrfs. Today I mistyped a device-node
and did a "mkfs.vfat" on one of them.

Then I simply did a "btrfs filesystem balance /path/". "btrfs filesystem show /path/"
now looks like this:

Label: 'home1'  uuid: c3c38f32-f176-4479-8c44-e832ea64639f
    Total devices 2 FS bytes used 226.12GB
    devid    2 size 465.76GB used 114.38GB path /dev/loop3
    devid    1 size 465.76GB used 114.39GB path /dev/loop4


Before my mistake the "FS bytes used" were all three the same, now the bottom two are
only half of the size. Am I right that those devices didnt run in raid1 mode anymore?
:(


Is there a way, without copying back all data from my backup, to get those 2 running in
raid1 mode?
Or do I have to make a "mkfs.btrfs -m raid1 -d raid1 /dev/1", "btrfs device add /dev/2" and
"btrfs filesystem balance /path/"? :/ That would cost a lot of time.


Thanks for your help!


Regards,
Felix
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