Solaris, Unix, Swap,Adding Swap File

Adding Swap File in Solaris

June 14th, 2012

rishi

0

How To Add Swap File in Solaris:

Follow below example to add Swap in solaris:

STEP 1:

Create a 2gb swap file

#mkfile 2048M /swapfile

STEP2:

Now run following command to append this Swap File to existing Swap Space:

#swap -a /swapfile

STEP3:

Make entry in vfstab file to make it permanent (i.e. it will not remain after reboot)as below:

NOTE: vfstab is very critical file, so touch this file only when your are a solaris administrator.

Take backup of this file as below:

#cp /etc/vfstab /etc/vfstab.date

Now make changes in this file as below:

#vi /etc/vfstab

/dev/md/dsk/d31 – – swap – no –
/swapfile – – swap – no –

STEP 4:

Run below commands before and after adding the swap space to crosscheck the activity:

swap -l
swap -s
df -h

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