UFS label confusion

[balanga]

gpart can add label to partitions. newfs can add a volume label to filesystem

Which should I use in fstab?

 

[SirDice]

Either one should work.

 

[balanga]

I set this system up with this fstab:-

root@X61:~ # cat /etc/fstab
# Device Mountpoint FStype Options Dump Pass#
/dev/ada0s1a / ufs rw 1 1

which works fine until I insert a second disk. gpart currently shows:-

=>       63  625142385  ada1  MBR  (298G)
         63  625142385     1  freebsd  [active]  (298G)

=>        0  625142385  ada1s1  BSD  (298G)
          0          1          - free -  (512B)
          1  209715200       1  freebsd-ufs  (100G)
  209715201  415427184          - free -  (198G)

I need to change fstab so I can boot from the same disk wherever it is installed. I haven't used mbr for quite a while so not sure which partition should be labelled or how to do it. I notice glabel or tunefs don't see to work on a live system... or am I mistaken?

 

[T-Daemon]

I haven't used mbr for quite a while so not sure which partition should be labelled or how to do it.

In your example partition table ada1s1a. The partition can be labeled with tunefs -L <label> ada1s1a.

I notice glabel or tunefs don't see to work on a live system... or am I mistaken?

tunefs(8) works quite well. The installer image (default MBR) has a "FreeBSD_Install" label for example.

/etc/fstab

/dev/ufs/FreeBSD_Install         /         ufs        ro,noatime       1      1

 

[balanga]

tunefs: ada1s1a is not clean - run fsck.

Looks like I can't boot from the current partition for this to work.

 

[T-Daemon]

tunefs: ada1s1a is not clean - run fsck.

Looks like I can't boot from the current partition for this to work.

Boot in single-user mode, run fsck_ffs(8), try tunefs(8) again, in single-user mode.

 

[T-Daemon]

... try tunefs(8) again, in single-user.

Apparently tunefs(8) labeling doesn't work on mounted file systems, just checked in a VM. In this case boot a installer image or a already installed system and label the un-mounted partition. Don't forget to modify the labeled systems fstab to new device name.