[SOLVED] fails: mount -t ufs -o ro,ufstype ufs2 /dev/sdc2 /mnt

mw.decavia · 03-31-2024, 05:38 PM

I need to resave some old files originally created under freebsd on a byegone pc, into some fs that is more generic. Right now adding a freebsd install to the laptop I have available would not be practical.

Back in the day when I was using slackware 14.x, this worked.

Code:

mount -t ufs -o ro,ufstype=ufs2 /dev/sdc2 /mnt

but now using slackware 64 15.0 , this error happens instead.

Code:

mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdc2,
missing codepage or helper program, or other error.

This is the (partial) output of "lsmod"

Code:

Module                  Size  Used by
fuse                  159744  1
ufs                    94208  0

This is happening on every drive and partition I have tried.

If I am trying to mount ufs partitions in an outdated way, please tell me the correct current way.

teckk · 04-01-2024, 01:55 PM

I haven't had to do that for a while.

https://www.kernel.org/doc/html/late...guide/ufs.html

You might run lsblk -f on them.

You may also look and see what you have on your machine

Code:

ls /usr/lib/modules/6.7.9-arch1-1/kernel/fs
9p          coda      fat      jffs2           nfsd       pstore    ufs
affs        cramfs    fscache  jfs             nilfs2     quota     vboxsf
afs         dlm       fuse     lockd           nls        reiserfs  xfs
bcachefs    ecryptfs  gfs2     mbcache.ko.zst  ntfs3      romfs     zonefs
befs        erofs     hfs      minix           ocfs2      smb
btrfs       exfat     hfsplus  netfs           omfs       squashfs
cachefiles  ext4      isofs    nfs             orangefs   ubifs
ceph        f2fs      jbd2     nfs_common      overlayfs  udf

I don't know where slack has that.

marav · 04-01-2024, 02:18 PM

Quote:

Originally Posted by teckk

I haven't had to do that for a while.

https://www.kernel.org/doc/html/late...guide/ufs.html

You might run lsblk -f on them.

You may also look and see what you have on your machine

Code:

ls /usr/lib/modules/6.7.9-arch1-1/kernel/fs
9p          coda      fat      jffs2           nfsd       pstore    ufs
affs        cramfs    fscache  jfs             nilfs2     quota     vboxsf
afs         dlm       fuse     lockd           nls        reiserfs  xfs
bcachefs    ecryptfs  gfs2     mbcache.ko.zst  ntfs3      romfs     zonefs
befs        erofs     hfs      minix           ocfs2      smb
btrfs       exfat     hfsplus  netfs           omfs       squashfs
cachefiles  ext4      isofs    nfs             orangefs   ubifs
ceph        f2fs      jbd2     nfs_common      overlayfs  udf

I don't know where slack has that.

Code:

# ls /lib/modules/6.6.23/kernel/fs
adfs    bfs         dlm       gfs2     minix   orangefs   quota   zonefs
affs    cachefiles  ecryptfs  hfs      nilfs2  overlayfs  sysv    binfmt_misc.ko
afs     ceph        efs       hfsplus  nls     pstore     ubifs
autofs  coda        freevxfs  hpfs     ocfs2   qnx4       ufs
befs    cramfs      fuse      jffs2    omfs    qnx6       vboxsf

marav · 04-01-2024, 02:23 PM

@mw.decavia
Can you post the output of? :

Code:

# file -s /dev/sdc2

mw.decavia · 04-01-2024, 04:44 PM

Quote:

Originally Posted by marav

@mw.decavia
Can you post the output of? :

Code:

# file -s /dev/sdc2

of course

Code:

# file -s /dev/sdc2
/dev/sdc2: DOS/MBR boot sector, BSD disklabel

And file ufs.ko was found here -

Code:

/lib/modules/5.15.19/kernel/fs/ufs/ufs.ko

But more importantly, I found the solution after user teckk replied -
It appears the 15.0 version of ufs.ko on my pc, thinks every ufs file needs to be "ufstype=44bsd" regardless of the ufs types I know the partitions are (because I created them myself years ago). When trying to mount a partition I know is ufs2, it still wants me to mount it as "44bsd". And then there is no error.

marav · 04-01-2024, 05:09 PM

Nice, so solved?

mw.decavia · 04-01-2024, 07:03 PM

Quote:

Originally Posted by marav

Nice, so solved?

Yes, though back in Slackware 14.x it was not like this. Perhaps some developer might have a look at the ufs fs module when the next release is being prepared ?

marav · 04-01-2024, 07:30 PM

According to man mount

Code:

Mount options for ufs
       ufstype=value
           UFS is a filesystem widely used in different operating systems. The problem are differences among implementations. Features of some implementations are undocumented, so its
           hard to recognize the type of ufs automatically. That’s why the user must specify the type of ufs by mount option. Possible values are:

           44bsd
               For filesystems created by a BSD-like system (NetBSD, FreeBSD, OpenBSD).

           ufs2
               Used in FreeBSD 5.x supported as read-write.

babydr · 04-01-2024, 11:50 PM

@marav , There used to be a third & maybe fourth selection .

ultrix

JimL ;-)

henca · 04-02-2024, 12:54 AM

Quote:

Originally Posted by mw.decavia

Perhaps some developer might have a look at the ufs fs module when the next release is being prepared ?

The ufs kernel module is part of the Linux kernel sources. Slackware usually uses upstream Linux kernels without any patches, so "some developer" should if so probably be some upstream Linux kernel developer.

regards Henrik