>>> On 4/26/2009 at 10:44 PM, "Martin, Terry R. (LOCKHEED MARTIN Performance Engineering/CTR) (CTR)" <terry.mar...@cms.hhs.gov> wrote:
> I am using SWAPGEN to define by z/Linux VDISKS I also want to define a > real disk for swap. My question is can I use SWAPGEN to define a swap on > real DASD? If you have an example of the control card syntax to > accomplish this that would be great? SWAPGEN only exists because VDISK are ephemeral. If you create one and use "mkswap" on it, there's no guarantee that swap signature will be there the next time the Linux system gets rebooted, because the guest may have been logged off before being rebooted. Rather than alter each Linux guest's startup scripts, SWAPGEN just makes it appear as though the VDISK never went away and came back again. Real disks don't have that problem. So, just give the Linux system the disk, bring it online, create a partition on it, use mkswap to turn it into a swap device, and then "swap on" to activate it. Update /etc/fstab to make the change permanent and you're done. Well, re-run mkinitrd and zipl so that the DASD volume will come back next time also. Mark Post
