Re: btrfs-convert on 24Gb image corrupts files.

[Anand Jain <anand.jain@oracle.com>]

It is meant to be applied on latest devel branch.


With the v2 patches:

$ ./btrfs-convert ~/sda3.img
btrfs-convert from btrfs-progs v6.8

Source filesystem:
   Type:           ext2
   Label:
   Blocksize:      4096
   UUID:           b3a78a9f-37e7-4ccb-bedb-1f800a6a5a19
Target filesystem:
   Label:
   Blocksize:      4096
   Nodesize:       16384
   UUID:           d8c61c42-1b2c-478d-8ae6-bf45213e8df4
   Checksum:       crc32c
   Features:       extref, skinny-metadata, no-holes, free-space-tree 
(default)
     Data csum:    yes
     Inline data:  yes
     Copy xattr:   yes
Reported stats:
   Total space:       536870912
   Free space:        326238208 (60.77%)
   Inode count:           32768
   Free inodes:           32743
   Block count:          131072
Create initial btrfs filesystem
Create ext2 image file
Create btrfs metadata
ERROR: inode 20 index 0: identified unsupported merged block length 1 
wanted 12
ERROR: failed to copy ext2 inode 20: -22
ERROR: error during copy_inodes -22
WARNING: error during conversion, the original filesystem is not modified





On 5/6/24 21:35, Yordan wrote:
> NO, I have problems applying patch4, so its unpatchet
> 
> error: patch failed: convert/source-fs.c:316
> error: convert/source-fs.c: patch does not apply
> 
> I just sent you a small problematic image so you can test it yourself.
> 
> On Mon, May 6, 2024 at 4:17 PM Anand Jain <anand.jain@oracle.com> wrote:
>>
>>
>>
>> On 5/6/24 18:53, Yordan wrote:
>>> The attached file which is a reduced version of the problematic image,
>>> produced by removing all files and directories, except 5 of the
>>> problematic files and their path. Then its filesystem filled with zero
>>> file, shrinked with "resize2fs" to 512M and compressed to 7M.
>>>
>>> md5sum sda3.img.zst
>>> 9eec41fee47e3db555edeaba5d8d2e9a  sda3.img.zst
>>>
>>> (chroot) livecd / # zstd -d sda3.img.zst -o sda3.img
>>> sda3.img.zst        : 536870912 bytes
>>> (chroot) livecd / # mount -o ro sda3.img k
>>> (chroot) livecd / # find k/ -type f | xargs md5sum >files.md5
>>> (chroot) livecd / # md5sum -c files.md5 | grep -v OK
>>>
>>> (chroot) livecd / # umount k
>>> (chroot) livecd / # B/btrfs-progs/btrfs-convert sda3.img
>>> btrfs-convert from btrfs-progs v6.8.1
>>>   > Source filesystem:
>>>     Type:           ext2
>>>     Label:
>>>     Blocksize:      4096
>>>     UUID:           b3a78a9f-37e7-4ccb-bedb-1f800a6a5a19
>>> Target filesystem:
>>>     Label:
>>>     Blocksize:      4096
>>>     Nodesize:       16384
>>>     UUID:           d7c77d2f-d470-450a-ba0e-b6567ad3f4b3
>>>     Checksum:       crc32c
>>>     Features:       extref, skinny-metadata, no-holes, free-space-tree (default)
>>>       Data csum:    yes
>>>       Inline data:  yes
>>>       Copy xattr:   yes
>>> Reported stats:
>>>     Total space:       536870912
>>>     Free space:        326238208 (60.77%)
>>>     Inode count:           32768
>>>     Free inodes:           32743
>>>     Block count:          131072
>>> Create initial btrfs filesystem
>>> Create ext2 image file
>>> Create btrfs metadata
>>> Copy inodes [o] [         1/        25]
>>> Free space cache cleared
>>> Conversion complete
>>>
>>> (chroot) livecd / # mount -o ro sda3.img k
>>> (chroot) livecd / # md5sum -c files.md5
>>> k/root/.mozilla/firefox/s554srh9.default-release/storage/permanent/chrome/idb/3561288849sdhlie.sqlite:
>>> FAILED
>>> k/root/.mozilla/firefox/s554srh9.default-release/storage/permanent/chrome/idb/1657114595AmcateirvtiSty.sqlite:
>>> FAILED
>>> k/root/.mozilla/firefox/s554srh9.default-release/storage/permanent/chrome/idb/2823318777ntouromlalnodry--naod.sqlite:
>>> FAILED
>>> k/root/.mozilla/firefox/s554srh9.default-release/storage/permanent/chrome/idb/2918063365piupsah.sqlite:
>>> FAILED
>>> k/root/.mozilla/firefox/s554srh9.default-release/storage/permanent/chrome/idb/3870112724rsegmnoittet-es.sqlite:
>>> OK
>>> k/root/.mozilla/firefox/s554srh9.default-release/storage/permanent/chrome/idb/1451318868ntouromlalnodry--epcr.sqlite:
>>> FAILED
>>> md5sum: WARNING: 5 computed checksums did NOT match
>>>
>>
>>
>> Are these test results with the v2 patchset? Thanks, Anand.
>>
>>
>>> Regards, Jordan.