On Fri, Apr 5, 2019 at 3:16 AM Qu Wenruo <quwenruo.bt...@gmx.com> wrote:
>
>
>
> On 2019/4/5 下午1:24, Zirconium Hacker wrote:
> > I've actually had a check running for the past 10 hours or so.
> > It got far enough, so I stopped it. The output is attached.
> >
>
> Unfortunately, your fs indeed get corrupted, but only in extent tree.
>
> You should be able to mount the fs in RO mode and copy out the data.
>
> But I'm surprised that balance by somehow corrupted the metadata CoW.
>
> Would you mind to paste the output of the following command?
>
> # btrfs ins dump-super /dev/sdh1
> # btrfs ins dump-tree -b 2629033574400 /dev/sdh1
>
> If the output of the 2nd command contains filenames, feel free to remove
> filenames.
> I'm just interested in which tree btrfs is trying to write into existing
> tree blocks, maybe it has some clue (e.g log tree/reloc tree).
The output of both is attached.
Thanks,
Jared
superblock: bytenr=65536, device=/dev/sdh1
---------------------------------------------------------
csum_type 0 (crc32c)
csum_size 4
csum 0x6c606dcf [match]
bytenr 65536
flags 0x1
( WRITTEN )
magic _BHRfS_M [match]
fsid c73a1699-41e6-445f-82f1-116e6e46eb64
metadata_uuid c73a1699-41e6-445f-82f1-116e6e46eb64
label
generation 611284
root 1638883393536
sys_array_size 129
chunk_root_generation 610429
root_level 1
chunk_root 3004702916608
chunk_root_level 1
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 1700366647296
bytes_used 1604544593920
sectorsize 4096
nodesize 16384
leafsize (deprecated) 16384
stripesize 4096
root_dir 6
num_devices 5
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x171
( MIXED_BACKREF |
COMPRESS_ZSTD |
BIG_METADATA |
EXTENDED_IREF |
SKINNY_METADATA )
cache_generation 611284
uuid_tree_generation 611156
dev_item.uuid 740ef398-9288-4436-8daf-54e26e6d1018
dev_item.fsid c73a1699-41e6-445f-82f1-116e6e46eb64 [match]
dev_item.type 0
dev_item.total_bytes 1000203091968
dev_item.bytes_used 993247887360
dev_item.io_align 4096
dev_item.io_width 4096
dev_item.sector_size 4096
dev_item.devid 1
dev_item.dev_group 0
dev_item.seek_speed 0
dev_item.bandwidth 0
dev_item.generation 0
btrfs-progs v4.20.2
leaf 2629033574400 items 52 free space 2179 generation 611020 owner EXTENT_TREE
leaf 2629033574400 flags 0x1(WRITTEN) backref revision 1
fs uuid c73a1699-41e6-445f-82f1-116e6e46eb64
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