can swap not mount?

sharapchi · 10-23-2006, 12:55 PM

I have installed slacware 11. Then i notice that swap partition is not mounted. Can a thing like this happen? How can i make mounted my swap on boot?

Thanks.

raska · 10-23-2006, 01:07 PM

Swap partitions are not mounted as they don't contain a proper filesystem.
Issue this command as root to see how your swap partitions are doing

Code:

swapon -s

sharapchi · 10-23-2006, 01:19 PM

when i use "swapon -s" command i cant see anything about swap.

Code:

root@sarapci:/home/sarapci# swapon -s
Filename                        Type            Size    Used    Priority
root@sarapci:/home/sarapci#

sharapchi · 10-23-2006, 01:24 PM

and also i want to say that i cant see anything about "swap" on fstab.

raska · 10-23-2006, 01:27 PM

ok
Let's go on a troubleshooting crash course. Likely all the commands that I shall mention from now on would require execution as root, as we will be doing some basic but easy system mainteinance stuff.
First type

Code:

fdisk -l | grep -i swap

to check if you have any swap partition(s) available. If you don't you might need to create one (or more as you please) with cfdisk or with fdisk itself if you feel confident with it

Please post back that output

sharapchi · 10-23-2006, 01:39 PM

Yes, i have a swap partition. And i think that on installation setup program did not write on fstab. Here is my fdisk -l and fstab.

Code:

bash-3.1$ su
Password:
bash-3.1# fdisk -l | grep "swap"
/dev/sda5            4867        5110     1959898+  82  Linux swap
bash-3.1# cat /etc/fstab | grep "swap"
bash-3.1# cat /etc/fstab
/dev/sda1        /                reiserfs    defaults         1   1
/dev/sda2        /home            reiserfs    defaults         1   2
/dev/sda6        /nilay           reiserfs    defaults         1   2
/dev/sda7        /musti           reiserfs    defaults         1   2
/dev/sdb1        /mnt/windows/c   ntfs        ro               1   0
/dev/sdb2        /mnt/windows/d   ntfs        ro               1   0
/dev/sdb3        /mnt/windows/e   ntfs        ro               1   0
/dec/sdc1        /mnt/memory      vfat        user,noauto
/dev/cdrom       /mnt/cdrom       auto        noauto,user,ro   0   0
/dev/dvd         /mnt/dvd         auto        noauto,user,ro   0   0
/dev/fd0         /mnt/floppy      auto        noauto,owner     0   0
devpts           /dev/pts         devpts      gid=5,mode=620   0   0
proc             /proc            proc        defaults         0   0
bash-3.1#

raska · 10-23-2006, 01:47 PM

cool!
You have passed the most difficult part already.
Add this line to your /etc/fstab file. Put it at the beginning of the file, before your /dev/sda1 entry:

Code:

/dev/sda5        swap                swap        defaults                  0   0
/dev/sda1 ...
/dev/sda2 ...

Save and exit.
Now let's make sure that you can use your /dev/sda5 partition as a swap space. Let's format it:

Code:

mkswap /dev/sda5

And finally, tell the system that you want to use all your swap partitions found in your /etc/fstab file:

Code:

swapon -a

Let's check that you have a working swap with the command that I gave you before

Code:

swapon -s

Just to be sure, you must see some swap here too:

Code:

free

And that's it. Hope it works without any hassle