[f2fs-dev] [Bug 218471] F2FS fails to mount rw at boot with "invalid zstd compress level: 6"

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=218471

Chao Yu (chao@kernel.org) changed:

           What    |Removed                     |Added
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                 CC|                            |chao@kernel.org

--- Comment #4 from Chao Yu (chao@kernel.org) ---
(In reply to Dhya Pacifica from comment #0)
> Using Debian 12.5 "Bookworm" and updated to most-recent stable release
> kernel "linux-image-6.1.0-18-amd64" which changelog says:
>   linux-signed-amd64 (6.1.76+1) bookworm; urgency=medium
>   * Sign kernel from linux 6.1.76-1
> 
> When it boots the f2fs filesystem fails to mount read-write and the boot
> journal shows:
>   kernel: F2FS-fs (nvme0n1p6): invalid zstd compress level: 6
> 
> This is the fstab entry for the corresponding partition:
>   UUID=XXXXXXXXXXX   /   f2fs   
> compress_algorithm=zstd:6,compress_chksum,atgc,gc_merge,lazytime   0       1
> 
> Under the previous kernel the partition correctly mounts and the 'mount'
> command shows:
>   /dev/nvme0n1p6 on / type f2fs
> (rw,relatime,lazytime,background_gc=on,gc_merge,discard,no_heap,user_xattr,
> inline_xattr,acl,inline_data,inline_dentry,flush_merge,extent_cache,
> mode=adaptive,active_logs=6,alloc_mode=default,checkpoint_merge,
> fsync_mode=posix,compress_algorithm=zstd:6,compress_log_size=2,
> compress_chksum,compress_mode=fs,atgc,discard_unit=block,memory=normal)
> 
> I was able to remount the filesystem read-write with:
>   sudo mount -o
> remount,rw,relatime,lazytime,background_gc=on,discard,no_heap,user_xattr,
> inline_xattr,acl,inline_data,inline_dentry,extent_cache,mode=adaptive,
> active_logs=6,alloc_mode=default,checkpoint_merge,fsync_mode=posix,
> compress_algorithm=lz4,compress_log_size=2,compress_mode=fs,atgc,
> discard_unit=block,memory=normal /dev/nvme0n1p6 /
> 
> and from there was able to update /etc/default/grub to boot the previous
> kernel:
>   GRUB_DEFAULT="Advanced options for Debian GNU/Linux>Debian GNU/Linux, with
> Linux 6.1.0-17-amd64"
> 
> I believe this bug may have been introduced with this patch: 
>   https://www.spinics.net/lists/stable-commits/msg329957.html

Can you please try below fixes:

[PATCH 6.1] f2fs: add helper to check compression level
https://lore.kernel.org/linux-f2fs-devel/20240212160530.1017205-1-chao@kernel.org/T/#u

[PATCH] f2fs: compress: fix to check zstd compress level correctly in mount
option
https://lore.kernel.org/linux-f2fs-devel/20240212160818.1020903-1-chao@kernel.org/T/#u

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