fstab

[Patrick Dupre]

Hello,

With ext4 filesystems, I used to set

ext4    noauto,errors=remount-ro        1 2

in the fstab.

With btrfs FS
it does not like the option errors=remount-ro
mount: /mnt/backup_2: wrong fs type, bad option, bad superblock on /dev/sdc5, missing codepage or helper program, or other error.
       dmesg(1) may have more information after failed mount system call.

btrfs: Unknown parameter 'errors'

Is there another option?

Thanks

===========================================================================
 Patrick DUPRÉ                                 | | email: [e-mail]
===========================================================================

[Roger Heflin]

man btrfs

But In general I always use defaults for the option and then override
any others.

And remount-readonly is a default option on ext4 and I don't believe
it was ever necessary to supply it.

On the above I would use defaults,noauto,nofail

On Sat, Jun 1, 2024 at 10:06 AM Patrick Dupre via users
 wrote:
> Hello,
>
> With ext4 filesystems, I used to set
>
> ext4    noauto,errors=remount-ro        1 2
>
> in the fstab.
>
> With btrfs FS
> it does not like the option errors=remount-ro
> mount: /mnt/backup_2: wrong fs type, bad option, bad superblock on /dev/sdc5, missing codepage or helper program, or other error.
>        dmesg(1) may have more information after failed mount system call.
>
> btrfs: Unknown parameter 'errors'
>
> Is there another option?
>
> Thanks
>
> ===========================================================================
>  Patrick DUPRÉ                                 | | email: [e-mail]
> ===========================================================================
> --
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[Chris Murphy]

On Sat, Jun 1, 2024, at 11:06 AM, Patrick Dupre via users wrote:
> Hello,
>
> With ext4 filesystems, I used to set
>
> ext4    noauto,errors=remount-ro        1 2
>
> in the fstab.
>
> With btrfs FS
> it does not like the option errors=remount-ro

That is an ext4 specific mount option. Btrfs already does this by default.