UFS Messed up setting up swap space

[sidney]

Just finished a fresh net install. Works just fine! However /etc/fstab doesn't show any swap space. I blew it doing a manual partition. Can I fix this after the fact? I've got 80G dedicated to freeBSD.

# Device        Mountpoint      FStype  Options Dump    Pass#
/dev/ada0p2     /               ufs     rw      1       1
/dev/ada0p4     /var          ufs     rw      2       2
/dev/ada0p5     /tmp        ufs     rw      2       2
/dev/ada0p6     /usr          ufs     rw      2       2

 

[SirDice]

Can I fix this after the fact?

Not if you want an actual swap partition, that involves removing the existing partitions and creating new ones. Although you could just tack it on at the end, if there's room for it. It doesn't need to have a specific partition number.

Alternatively, you could use a swap file: https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/adding-swap-space.html#create-swapfile

 

[sidney]

I just ran:

gpart show ada0
=>          40  156301408  ada0  GPT  (75G)
               40          1024     1  freebsd-boot  (512K)
           1064    4193280     2  freebsd-ufs     (2.0G)
     4194344    8388608     3  freebsd-ufs     (4.0G)
   12582952   73400320    4  freebsd-ufs     (35G)
   85983272    8388608     5  freebsd-ufs     (4.0G)
   94371880   61929568    6  freebsd-ufs     (30G)

The 4.0G - 3rd from the top - is what I set up as swap. However it's NOT labeled as "swap". Can I fix the labelling?

 

[SirDice]

Partition type should be freebsd-swap. So you'd need to change that too. Just remove that partition and create a new one in its place, you can create it with the correct label too.

 

[sidney]

I blew it again! I deleted the partition:

 gpart show ada0
=>       40  156301408  ada0  GPT  (75G)
         40       1024     1  freebsd-boot  (512K)
       1064    4193280     2  freebsd-ufs  (2.0G)
    4194344    8388608        - free -  (4.0G)
   12582952   73400320     4  freebsd-ufs  (35G)
   85983272    8388608     5  freebsd-ufs  (4.0G)
   94371880   61929568     6  freebsd-ufs  (30G)

I don't seem to be able to morph the "free" 4G into swap.
I tried:
sudo gpart modify -i 3 -t freebsd-swap ada0

and a bunch of other command combos, but I haven't lucked into the correct one yet. Can it be fixed?

 

[sidney]

gpart show ada0
=>       40  156301408  ada0  GPT  (75G)
         40       1024     1  freebsd-boot  (512K)
       1064    4193280     2  freebsd-ufs  (2.0G)
    [B]4194344    8388608     3  freebsd-swap  (4.0G)[/B]
   12582952   73400320     4  freebsd-ufs  (35G)
   85983272    8388608     5  freebsd-ufs  (4.0G)
   94371880   61929568     6  freebsd-ufs  (30G)

Got it done!! With
gpart add -t freebsd-swap ada0
Not bad for a 74 yr old, retired amateur hacker! Right?

 

[SirDice]

Not bad for a 74 yr old, retired amateur hacker! Right?

You're never too old to learn

 

[sidney]

Is that a fact! The things a person can learn in the FreeBSD forum!