Hi,
On my second attempt to convert my 698 GiB usb HDD from ext4 to btrfs
with btrfs-progs 4.19 from Manjaro (kernel 4.14.80):
I identified bad files with
$ find . -type f -exec cat {} > /dev/null \;
This revealed 6 corrupted files, I deleted them. Tried it again with
no error message.
Then I checked HDD with
$ sudo fsck.ext4 -f /dev/sdb1
e2fsck 1.44.4 (18-Aug-2018)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
HDD: 763513/45744128 files (0.3% non-contiguous), 131674747/182970301 blocks
It is mountable & usable.
Now my attempt to convert
$ LC_ALL=en_US.utf8 sudo strace -f -s 10 -a 4 -o convert-strace.log
btrfs-convert /dev/sdb1
create btrfs filesystem:
blocksize: 4096
nodesize: 16384
features: extref, skinny-metadata (default)
creating ext2 image file
Unable to find block group for 0
Unable to find block group for 0
Unable to find block group for 0
ctree.c:2244: split_leaf: BUG_ON `1` triggered, value 1
btrfs-convert(+0x162d6)[0x561fbd26b2d6]
btrfs-convert(btrfs_search_slot+0xf21)[0x561fbd26c881]
btrfs-convert(btrfs_csum_file_block+0x499)[0x561fbd27e8e9]
btrfs-convert(+0xe6f5)[0x561fbd2636f5]
btrfs-convert(main+0x194f)[0x561fbd26296f]
/usr/lib/libc.so.6(__libc_start_main+0xf3)[0x7f658a93a223]
btrfs-convert(_start+0x2e)[0x561fbd26328e]
Aborted
It crashed :) The log is 2.4G, I compressed it and put it at
https://drive.google.com/drive/folders/0B5oVWFBM47D9aVpJY2s4UTdMdUU
What else can I do to debug further?
Thanks..
