RAID 1 with no data on it when accidentally switched HDD

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Hi,

I'm not sure whether it's a bug in btrfs or my distro but I discovered an odd behavior today.

My Setup:

* Btrfs v3.12+20131125
* /dev/sda – Boot OS - opensuse 13.1
* Btrfs RAID 1 on /dev/sdb1 and /dev/sdc1

I added an extra HDD with an other OS and Data on it witch accidentally became /dev/sdc.

Btrfs got mounted at boot time without any complains but in the main volume was empty.
Some subvolumes still had Data.

I took the extra HDD out but still no data in the Btrfs main volume. Bfrfsck reported no error.
Some Parts on the (accidentally) /dev/sdc are now corrupt.

I would expect that btrfs would throw an error when getting in the kind of scenario.

Regards

Ingo
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