Hi All, I'm trying to repair a broken fs using btrfsck and am hitting a failed assertion. I'd appreciate any suggestions for what to do next. Is there any thing I can do to help fix this bug? Any other information from my FS which would help? If the FS could be salvaged that would be a bonus, but I'm more interested in providing a useful bug report before wiping the disk.
My versions are: - OS - CentOS 6.3 - Kernel - 3.7.1-2 from http://elrepo.org/tiki/kernel-ml - btrfs-progs - v0.20-rc1-37-g91d9eec. Built today from git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git The failure is: # ./btrfsck --repair /dev/md4 enabling repair mode checking extents leaf parent key incorrect 183603200 bad block 183603200 leaf parent key incorrect 183640064 bad block 183640064 warning, start mismatch 152387469312 762175488 block 152387469312 rec extent_item_refs 1, passed 1 warning, start mismatch 449606139904 427217858560 block 427217858560 rec extent_item_refs 1, passed 1 ref mismatch on [32215040 4096] extent item 30, found 31 btrfsck: extent-tree.c:2549: btrfs_reserve_extent: Assertion `!(ret)' failed. Aborted If i run btrfsck in non-repair mode I get: # ./btrfsck /dev/md4 checking extents leaf parent key incorrect 183603200 bad block 183603200 leaf parent key incorrect 183640064 bad block 183640064 warning, start mismatch 152387469312 762175488 checksum verify failed on 34390753280 wanted 26D779EB found 40 checksum verify failed on 34390753280 wanted 26D779EB found 40 block 152387469312 rec extent_item_refs 1, passed 1 warning, start mismatch 449606139904 427217858560 block 427217858560 rec extent_item_refs 1, passed 1 ref mismatch on [32215040 4096] extent item 30, found 31 Backref 32215040 parent 427255582720 root 427255582720 not found in extent tree backpointer mismatch on [32215040 4096] ... [snipped several thousand lines similar to the previous three] ... ref mismatch on [477808889856 4096] extent item 11, found 12 Backref 477808889856 parent 427202011136 root 427202011136 not found in extent tree backpointer mismatch on [477808889856 4096] Errors found in extent allocation tree checking fs roots root 256 inode 140337 errors 400 root 256 inode 169441 errors 400 root 256 inode 169442 errors 400 root 256 inode 1843202 errors 400 warning line 1789 found 651533594626 bytes used err is 1 total csum bytes: 624739028 total tree bytes: 11639873536 total fs tree bytes: 10394214400 btree space waste bytes: 2925577458 file data blocks allocated: 741854191616 referenced 741832200192 Btrfs v0.20-rc1-37-g91d9eec] -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
