Become superuser.
You can create a swap file without root permissions. However, to avoid accidental overwriting, root should be the owner of the swap file.
Create a directory for the swap file, if needed.
# mkfile nnn[k|b|m] filename |
The swap file of the size nnn (in Kbytes, bytes, or Mbytes) with the filename you specify is created.
Activate the swap file.
# /usr/sbin/swap -a /path/filename |
You must use the absolute path name to specify the swap file. The swap file is added and available until the file system is unmounted, the system is rebooted, or the swap file is removed. Keep in mind that you cannot unmount a file system while some process or program is swapping to the swap file.
Add an entry for the swap file to the /etc/vfstab file that specifies the full path name of the file, and designates swap as the file system type.
/path/filename - - swap - no - |
Verify that the swap file is added.
$ /usr/sbin/swap -l |
If a swap file does not get activated, make sure that the following service is running:
# svcs nfs/client STATE STIME FMRI enabled 14:14:34 svc:/network/nfs/client:default |
The following examples shows how to create a 100-Mbyte swap file called /files/swapfile.
# mkdir /files # mkfile 100m /files/swapfile # swap -a /files/swapfile # vi /etc/vfstab (An entry is added for the swap file): /files/swapfile - - swap - no - # swap -l swapfile dev swaplo blocks free /dev/dsk/c0t0d0s1 136,1 16 1638608 1600528 /files/swapfile - 16 204784 204784 |