I reformatted the 6TB volume, and filled it with data (3.5TB). Yesterday there was a power failure and the partition became corrupted. btrfsck 0.19+20120328-2ubuntu1 used all available memory (of 6GB present) and got killed by OOM:
... ref mismatch on [5606072983552 8192] extent item 1, found 0 Incorrect local backref count on 5606072983552 root 4095 owner 14571496 offset 0 found 0 wanted 1 back 0x846449d0 backpointer mismatch on [5606072983552 8192] owner ref check failed [5606072983552 8192] Errors found in extent allocation tree checking fs roots Killed I then added 2GB and after using 6.5GB of memory, the btrfsck managed to complete, but it did not fix the filesystem: Errors found in extent allocation tree checking fs roots checking root refs found 3304564289536 bytes used err is 0 total csum bytes: 3195312740 total tree bytes: 30077300736 total fs tree bytes: 24014831616 btree space waste bytes: 7517736113 file data blocks allocated: 3557121048576 referenced 3557121048576 Btrfs Btrfs v0.19 Is there a special flag for btrfsck to fix the filesystem? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/992480 Title: fsck.btrfs of a 1TB volume triggers OOM kill on a 1GB RAM machine. (32-bit) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/btrfs-tools/+bug/992480/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
