hello! A power outage damaged a btrfs - it could not be mounted upon startup. kernel: 2.6.38 (from ubuntu kernel ppa). dmesg: [ 88.562819] device fsid 844676ff057abdd4-ccd6cf8af4e14dba devid 1 transid 112504 /dev/sdb1 [ 88.596515] verify_parent_transid: 6 callbacks suppressed [ 88.596518] parent transid verify failed on 408626470912 wanted 111124 found 111474 [ 88.596686] parent transid verify failed on 408626470912 wanted 111124 found 111474 [ 88.600062] parent transid verify failed on 408626470912 wanted 111124 found 111474 [ 88.600067] parent transid verify failed on 408626470912 wanted 111124 found 111474 [ 88.670071] btrfs: open_ctree failed I compiled the latest btrfs-progs-unstable and tried btrfsck: root@tesla:/root/btrfs-progs-unstable# ./btrfsck /dev/sdb1 parent transid verify failed on 408626470912 wanted 111124 found 111474 parent transid verify failed on 408626470912 wanted 111124 found 111474 parent transid verify failed on 408626470912 wanted 111124 found 111474 btrfsck: disk-io.c:416: find_and_setup_root: Assertion `!(!root->node)'' failed. Abgebrochen root@tesla:/root/btrfs-progs-unstable# ./btrfsck -s 1 /dev/sdb1 using SB copy 1, bytenr 67108864 parent transid verify failed on 408626470912 wanted 111124 found 111474 parent transid verify failed on 408626470912 wanted 111124 found 111474 parent transid verify failed on 408626470912 wanted 111124 found 111474 btrfsck: disk-io.c:416: find_and_setup_root: Assertion `!(!root->node)'' failed. Abgebrochen root@tesla:/root/btrfs-progs-unstable# ./btrfsck -s 2 /dev/sdb1 using SB copy 2, bytenr 274877906944 parent transid verify failed on 408626470912 wanted 111124 found 111474 parent transid verify failed on 408626470912 wanted 111124 found 111474 parent transid verify failed on 408626470912 wanted 111124 found 111474 btrfsck: disk-io.c:416: find_and_setup_root: Assertion `!(!root->node)'' failed. Abgebrochen root@tesla:/root/btrfs-progs-unstable# ./btrfs filesystem show /dev/sdb1 failed to read /dev/sr0 Label: none uuid: d4bd7a05-ff76-4684-ba4d-e1f48acfd6cc Total devices 1 FS bytes used 544.12GB devid 1 size 931.51GB used 547.79GB path /dev/sdb1 Btrfs v0.19-36-g70c6c10 The data on this filesystem is not important, though it would be nice if i could regain access to it. Is there anything I can try to salvage it? thanks Robert -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html