Increase filesystem swap

[Ian Jones_1]

i have needed to use filesystem swap, i now want to increase its size, how do i tell the system to unmount it so i can increase its size, as its in use all the time?

Thanks

Ian

[A. Clay Stephenson]

Once swap is activated via swapon() whether or not it's actually used, it can't deactivated. You will need to reboot.

[Patrick Wallek]

You can't resize swap online. If you really do need more, you will have to add a new swap area.

[Ian Jones_1]

but it then will allocate swap again on the reboot, so i will still not be able to change the file system?
Or have i missed a step here!

[A. Clay Stephenson]

You can change the fstab entry and then reboot. When the system comes back up the new size will be recognized and used.

NOTE: You may need to increase the kernel tunable maxswapchunks.

[Patrick Wallek]

You would need to boot into single-user mode, which is before any swap is activated.

Now, hopefully you are not wanting to extend your Primary Swap partition (vg00/lvol2) because the only real supported way to do that is via an Ignite make_tape_recovery tape.

If it is a different swap area, then you can extend it via lvextend.

[Kent Ostby]

You comment the swap line out of the fstab while you are up and then reboot.