[snip] > > Hi there! > > I ran btrfs check --repair on the filesystem. I dont' have this log > anymore, > as it was then sitting on the repaired fs), which is now dead. > after repairing it I could still mount the fs. > > as my btrfs send problem still persists (another thread), I decided to > run check > again... this time i saved the logs to a different partition as it was more > convenient at that time. here's the output: > > Checking filesystem on /dev/mapper/sda3c > UUID: a914c141-72bf-448b-847f-d64ee82d8b7b > [1/7] checking root items > Fixed 0 roots. > [2/7] checking extents > No device size related problem found > [3/7] checking free space cache > cache and super generation don't match, space cache will be invalidated > [4/7] checking fs roots > root 1387 inode 3082380 errors 100, file extent discount > Found file extent holes: > start: 0, len: 233472 > ERROR: errors found in fs roots > found 470636822528 bytes used, error(s) found > total csum bytes: 452176524 > total tree bytes: 4579753984 > total fs tree bytes: 3822665728 > total extent tree bytes: 245301248 > btree space waste bytes: 847442809 > file data blocks allocated: 9670623588352 > referenced 932405829632 > > I did a repair once again but the error did not go away. > > after rebooting the fs is no longer mountable: > mint@mint:/tmp$ sudo /tmp/btrfs check /dev/mapper/sda3c > Opening filesystem to check... > parent transid verify failed on 166475366400 wanted 127054 found 127060 > parent transid verify failed on 166475366400 wanted 127054 found 127060 > Ignoring transid failure > ERROR: child eb corrupted: parent bytenr=166456229888 item=22 parent > level=2 child level=0
Please run the following command: # btrfs ins dump-tree --follow -b 166456229888 It could be caused by the fact that btrfs-progs --repair doesn't handle log tree well. If that's the case, "btrfs rescue zero-log" should help. But anyway, feel free to re-create the fs if zero-log doesn't help. Thanks, Qu > ERROR: cannot open file system > > If anyone wants me to help debugging this issue you will have to respond > fast, because i need my laptop back in working condition and will soon > nuke the fs. after all I will try one more time with a freshly formatted > btrfs partition. if i still get these kinds of errors i will have to > move back to > the tried and true xfs :/ > > best regards, > Jürgen
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