UFS OpenSuse support for UFS

[balanga]

Apparently OpenSuse provides some limited support for UFS.

Has anyone tried it and how well does it work?

 

[Espionage724]

Seemingly mounted fine 4 days ago (booted oS TW LiveUSB to backup 15.1); I didn't try write, but it mounted after modprobe ufs (iirc ufs is default blacklisted)

 

[fahrenheit]

The support is not from opensuse, but is baked into the linux kernel: https://docs.kernel.org/admin-guide/ufs.html
Like Espionage724 said, you may need to load a module to have it work, and you probably also need the relevant user space utils (for mkfs and fsck).

 

[Alain De Vos]

read only ufs works on any linux distro for a long time

 

[balanga]

The support is not from opensuse, but is baked into the linux kernel: https://docs.kernel.org/admin-guide/ufs.html
Like Espionage724 said, you may need to load a module to have it work, and you probably also need the relevant user space utils (for mkfs and fsck).

Does that mean that any Linux flavour should be able to support UFS, at least in RO?

 

[rbranco]

You have to remove it from the blacklist: rm /usr/lib/modprobe.d/60-blacklist_fs-ufs.conf

It's not that great. YMMV. ZFS is the way.

 

[Alain De Vos]

Does that mean that any Linux flavour should be able to support UFS, at least in RO?

Yes, as far as know only RO is "stable"

 

[Alain De Vos]

You have to remove it from the blacklist: rm /usr/lib/modprobe.d/60-blacklist_fs-ufs.conf

It's not that great. YMMV. ZFS is the way.

Use the zfs KMOD module ,works on most linux distros.

 

[balanga]

Seemingly mounted fine 4 days ago (booted oS TW LiveUSB to backup 15.1); I didn't try write, but it mounted after modprobe ufs (iirc ufs is default blacklisted)

I tried mounting a UFS partition on Debian but it seemed to need all sorts of things I couldn't figure out so I went back to OpenSuse and am copying UFS partitions form my 'inaccessible' disk to my server for backup purposes.

When it's all backed up I will try to do gpart destroy -F da0 and see if I can regain access from FreeBSD which at this point tells me there is no such geom as da0.

 

[Alain De Vos]

using artix linux here, with zen kernel
[No packages needed]
> lsmod | grep -i ufs
ufs 106496 1
> mount | grep ufs
/dev/sdf2 on /mnt/sde2 type ufs (ro,relatime,ufstype=ufs2,onerror=lock)

 

[Machiaveli]

Apparently OpenSuse provides some limited support for UFS.

Has anyone tried it and how well does it work?

You did ask that on June 2021

See: https://forums.freebsd.org/threads/r-w-access-to-ufs-from-linux.80830/post-516614

 

[cracauer@]

Does that mean that any Linux flavour should be able to support UFS, at least in RO?

The Linux kernel is dragging a UFS module with read-write support around since the beginning. The default compile option is to make it readonly.

Unless a Linux distribution fiddles with that it will have readonly UFS support.

 

[Alain De Vos]

Sidenote, when i do file linux sees my ufs partition nicely.

lsblk & partitionmanager say unknown.
The worst is a zpool special partition. There linux says "crap".

Detecting partitions should be easy. I think "Linux" has a "Licensing problem".