Re: [f2fs-dev] `mount` reports an error, but `fsck.f2fs` does not

[Jaegeuk Kim <jaegeuk@kernel.org>]

Hi,

On 03/27, beroal wrote:
> Ping.
> 
> On 20.03.21 00:46, beroal wrote:
> > Hi. After I extended a partition containing F2FS with a recent version
> > of Gparted, the partition no longer mounts. `mount` reports an error,
> > but `fsck.f2fs` does not see any problem (well, except for `Invalid CP
> > CRC offset: 0`) and does not fix the file system.
> > 
> > ```
> > losetup /dev/loop0 arch-os.img
> > mount -t f2fs -o ro /dev/loop0 /root/mnt/temp
> > ```
> > 
> > ```
> > [ 6890.647749] F2FS-fs (loop0): Wrong valid_user_blocks: 16040048,
> > user_block_count: 10016768
> > [ 6890.647808] F2FS-fs (loop0): Failed to get valid F2FS checkpoint
> > ```
> > 
> > ```
> > losetup -d /dev/loop0
> > fsck.f2fs arch-os.img

May I ask run this?

# fsck.f2fs -d 3 arch-os.img?

Thanks,

> > ```
> > 
> > ```
> > Info: Segments per section = 1
> > Info: Sections per zone = 1
> > Info: sector size = 512
> > Info: total sectors = 162916352 (79549 MB)
> > Info: MKFS version
> >   "Linux version 4.4.1-2-ARCH (builduser@foutrelis) (gcc version 5.3.0
> > (GCC) ) #1 SMP PREEMPT Wed Feb 3 13:12:33 UTC 2016"
> > Info: FSCK version
> >   from "Linux version 5.7.12-arch1-1 (linux@archlinux) (gcc version
> > 10.1.0 (GCC), GNU ld (GNU Binutils) 2.34.0) #1 SMP PREEMPT Fri, 31 Jul
> > 2020 17:38:22 +0000"
> >     to "Linux version 5.11.7-arch1-1 (linux@archlinux) (gcc (GCC)
> > 10.2.0, GNU ld (GNU Binutils) 2.36.1) #1 SMP PREEMPT Wed, 17 Mar 2021
> > 16:59:58 +0000"
> > Info: superblock features = 0 :
> > Info: superblock encrypt level = 0, salt =
> > 00000000000000000000000000000000
> > Info: total FS sectors = 162916352 (79549 MB)
> >     Invalid CP CRC offset: 0
> > Info: CKPT version = a14d4c
> > Info: Checked valid nat_bits in checkpoint
> > Info: checkpoint state = 81 :  nat_bits unmount
> > 
> > [FSCK] Unreachable nat entries                        [Ok..] [0x0]
> > [FSCK] SIT valid block bitmap checking                [Ok..]
> > [FSCK] Hard link checking for regular file            [Ok..] [0x719]
> > [FSCK] valid_block_count matching with CP             [Ok..] [0xf4c070]
> > [FSCK] valid_node_count matching with CP (de lookup)  [Ok..] [0xe242a]
> > [FSCK] valid_node_count matching with CP (nat lookup) [Ok..] [0xe242a]
> > [FSCK] valid_inode_count matched with CP              [Ok..] [0xe0470]
> > [FSCK] free segment_count matched with CP             [Ok..] [0x1d6b]
> > [FSCK] next block offset is free                      [Ok..]
> > [FSCK] fixing SIT types
> > [FSCK] other corrupted bugs                           [Ok..]
> > 
> > Done: 14.100000 secs
> > ```
> > 
> > Can I fix this file system and how?
> > 
> > f2fs-tools 1.14.0
> > 
> > 
> > 
> > _______________________________________________
> > Linux-f2fs-devel mailing list
> > Linux-f2fs-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
> 
> 
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