On 3 Jan 2013, at 12:26, Richard Cooper wrote: > 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.
After this error I reformatted and started again. A few days ago I hit exactly the same error in btrfsck again. Is it useful for me to report the same errors again? Would it make more sense for me to submit them to https://bugzilla.kernel.org? Is that tracker appropriate for btrfs-progs related bugs? My versions are: - OS - CentOS 6.3 - Kernel - 3.7.8-1 from http://elrepo.org/tiki/kernel-ml - btrfs-progs - v0.20-rc1-56-g6cd836d. Built from git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git # ./btrfs-progs/btrfs fi show /dev/md4 Label: none uuid: fecad98e-63e8-47b7-9bc1-5d9351f15e76 Total devices 1 FS bytes used 702.22GB devid 1 size 16.36TB used 723.04GB path /dev/md4 Btrfs v0.20-rc1-56-g6cd836d # ./btrfsck --repair /dev/md4 enabling repair mode checking extents incorrect offsets 2539 133611 bad block 694804008960 bad key ordering 26 27 bad block 710147256320 bad key ordering 29 30 bad block 710793940992 ref mismatch on [506097786880 8192] extent item 1, found 0 btrfsck: extent-tree.c:2549: btrfs_reserve_extent: Assertion `!(ret)' failed. Aborted # echo $? 134 If i run btrfsck in non-repair mode I get: # ./btrfsck /dev/md4 checking extents incorrect offsets 2539 133611 bad block 694804008960 bad key ordering 26 27 bad block 710147256320 bad key ordering 29 30 bad block 710793940992 ref mismatch on [506097786880 8192] extent item 1, found 0 Incorrect local backref count on 506097786880 root 257 owner 6201018 offset 0 found 0 wanted 1 back 0x72966380 backpointer mismatch on [506097786880 8192] owner ref check failed [506097786880 8192] ref mismatch on [506097795072 8192] extent item 1, found 0 Incorrect local backref count on 506097795072 root 257 owner 6201019 offset 0 found 0 wanted 1 back 0x72966460 backpointer mismatch on [506097795072 8192] owner ref check failed [506097795072 8192] ref mismatch on [506097803264 8192] extent item 1, found 0 Incorrect local backref count on 506097803264 root 257 owner 6201021 offset 0 found 0 wanted 1 back 0x72966540 backpointer mismatch on [506097803264 8192] owner ref check failed [506097803264 8192] ref mismatch on [506097811456 8192] extent item 1, found 0 Incorrect local backref count on 506097811456 root 257 owner 6201022 offset 0 found 0 wanted 1 back 0x72966620 backpointer mismatch on [506097811456 8192] owner ref check failed [506097811456 8192] ref mismatch on [686802194432 20480] extent item 1, found 0 Incorrect local backref count on 686802194432 root 257 owner 8037960 offset 0 found 0 wanted 1 back 0x82c1e2a0 backpointer mismatch on [686802194432 20480] owner ref check failed [686802194432 20480] ref mismatch on [686802214912 20480] extent item 1, found 0 Incorrect local backref count on 686802214912 root 257 owner 8037961 offset 0 found 0 wanted 1 back 0x82c1e380 backpointer mismatch on [686802214912 20480] owner ref check failed [686802214912 20480] ref mismatch on [686802235392 20480] extent item 1, found 0 Incorrect local backref count on 686802235392 root 257 owner 8037962 offset 0 found 0 wanted 1 back 0x82c1e460 backpointer mismatch on [686802235392 20480] owner ref check failed [686802235392 20480] ref mismatch on [686802255872 20480] extent item 1, found 0 Incorrect local backref count on 686802255872 root 257 owner 8037963 offset 0 found 0 wanted 1 back 0x82c1e540 backpointer mismatch on [686802255872 20480] owner ref check failed [686802255872 20480] ref mismatch on [686802276352 20480] extent item 1, found 0 Incorrect local backref count on 686802276352 root 257 owner 8037964 offset 0 found 0 wanted 1 back 0x82c1e620 backpointer mismatch on [686802276352 20480] owner ref check failed [686802276352 20480] ref mismatch on [686802296832 20480] extent item 1, found 0 Incorrect local backref count on 686802296832 root 257 owner 8037965 offset 0 found 0 wanted 1 back 0x82c1e700 backpointer mismatch on [686802296832 20480] owner ref check failed [686802296832 20480] ref mismatch on [686802317312 20480] extent item 1, found 0 Incorrect local backref count on 686802317312 root 257 owner 8037966 offset 0 found 0 wanted 1 back 0x82c1e7e0 backpointer mismatch on [686802317312 20480] owner ref check failed [686802317312 20480] owner ref check failed [694804008960 4096] owner ref check failed [710147256320 4096] owner ref check failed [710793940992 4096] Errors found in extent allocation tree checking fs roots root 257 inode 6292865 errors 400 root 257 inode 6292867 errors 400 found 754001297408 bytes used err is 1 total csum bytes: 718173168 total tree bytes: 18407149568 total fs tree bytes: 16537788416 btree space waste bytes: 4527688532 file data blocks allocated: 735593959424 referenced 735590412288 Btrfs v0.20-rc1-56-g6cd836d -- 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
