I had set up btrfs with 2 devices by using command this command sequence. "mkfs.btrfs -m raid1 /dev/sda1 mount /dev/sda1 /mnt/data btrfs-vol -a /dev/sdb1 /mnt/data btrfs-vol -b /mnt/data" (I was think that it will do raid1 for both data and metadata but I currently realised that it will do raid1 for metadata but raid0 for data.) But I forgot that I have mount /dev/sdb1 with TrueCrypt. After I restarted my PC and try to mount both devices array again there was a message in dmesg said "chalet16@server:~$ sudo mount /dev/sda1 /mnt/data [ 2828.921406] device label btr2902 devid 1 transid 8829 /dev/mapper/truecrypt1 [ 2828.931780] btrfs: failed to read the system array on dm-1 [ 2828.961330] btrfs: open_ctree failed" And when I ran btrfs-show it show that "chalet16@server:~$ sudo btrfs-show failed to read /dev/sr0 Label: btr2902 uuid: 5673597c-ff57-4a42-8fe3-ff793f476809 Total devices 2 FS bytes used 706.75GB devid 1 size 930.00GB used 717.26GB path /dev/sda1 *** Some devices missing Btrfs Btrfs v0.19" And when I run btrfsck on missing device "chalet16@server:~$ sudo btrfsck /dev/sde1 No valid Btrfs found on /dev/sde1" So I would like to ask for help to recover data from this btrfs raid array. In my opinion I think that TrueCrypt only overwrite a little location in device because I haven't done anything with TrueCrypt device after that. Thanks Chalet16 PS. I have recently known that TrueCrypt is in "Forbidden items" list in Fedora wiki, but this is not really related to TrueCrypt so please don't ban me because I had used TrueCrypt. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
