Maybe you are right, but i just followed the Suse guide: https://en.opensuse.org/SDB:BTRFS How to repair a broken/unmountable btrfs filesystem I already tried the commands mount with the -o usebackuproot option. (And -o usebackuproot,ro as well) But they just produce this in dmesg: [61054.470771] BTRFS info (device sdb1): trying to use backup root at mount time [61054.470778] BTRFS info (device sdb1): disk space caching is enabled [61054.470782] BTRFS info (device sdb1): has skinny extents [61054.560876] BTRFS error (device sdb1): parent transid verify failed on 29392896 wanted 1486833 found 1486836 [61054.563423] BTRFS error (device sdb1): parent transid verify failed on 29392896 wanted 1486833 found 1486836 [61054.604057] BTRFS error (device sdb1): open_ctree failed [61079.137435] BTRFS info (device sdb1): trying to use backup root at mount time [61079.137443] BTRFS info (device sdb1): disk space caching is enabled [61079.137445] BTRFS info (device sdb1): has skinny extents [61079.227242] BTRFS error (device sdb1): parent transid verify failed on 29392896 wanted 1486833 found 1486836 [61079.230087] BTRFS error (device sdb1): parent transid verify failed on 29392896 wanted 1486833 found 1486836 [61079.260062] BTRFS error (device sdb1): open_ctree failed And on the cli i get the following: mainframe:~ # mount -o usebackuproot,ro /dev/sdb1 /data mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so. A restore does also not help: mainframe:~ # btrfs restore /dev/sdb1 /mnt parent transid verify failed on 29392896 wanted 1486833 found 1486836 parent transid verify failed on 29392896 wanted 1486833 found 1486836 parent transid verify failed on 29392896 wanted 1486833 found 1486836 parent transid verify failed on 29392896 wanted 1486833 found 1486836 Ignoring transid failure parent transid verify failed on 29409280 wanted 1486829 found 1486833 parent transid verify failed on 29409280 wanted 1486829 found 1486833 parent transid verify failed on 29409280 wanted 1486829 found 1486833 parent transid verify failed on 29409280 wanted 1486829 found 1486833 Ignoring transid failure parent transid verify failed on 29376512 wanted 1327723 found 1486833 parent transid verify failed on 29376512 wanted 1327723 found 1486833 parent transid verify failed on 29376512 wanted 1327723 found 1486833 parent transid verify failed on 29376512 wanted 1327723 found 1486833 Ignoring transid failure -- Thomas Wurfbaum Starkertshofen 15 85084 Reichertshofen Tel.: +49-160-3696336 Mail: thomas@xxxxxxxxxxxx Google+:http://google.com/+ThomasWurfbaum Facebook: https://www.facebook.com/profile.php?id=100006061335414 Xing: https://www.xing.com/profile/Thomas_Wurfbaum
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