eric@batcomputer.tn.cornell.edu (Eric Fielding) (09/17/89)
what does one have to do to create a second swap partition on a second disk drive (in addition to the default b on the system disk)? I tried changing the partition size with 'chpt' of my /dev/rrz3b partition and entering it into my /etc/fstab as a swap partition, but "swapon -a" complains that it must be a block device. This happens with or without running 'mkfs' on that partition. Is there some other program to run to create a "block device" for swapping? Do you have to specify the swap partitions in the kernal configuration? (Oh, in case it makes any difference this is Ultrix 3.0 on a PMAX.) ++Eric Fielding eric@jasper.tn.cornell.edu
grr@cbmvax.UUCP (George Robbins) (09/17/89)
In article <8871@batcomputer.tn.cornell.edu> eric@jasper.tn.cornell.edu writes: > what does one have to do to create a second swap partition on a second disk > drive (in addition to the default b on the system disk)? I tried changing the > partition size with 'chpt' of my /dev/rrz3b partition and entering it into my > /etc/fstab as a swap partition, but "swapon -a" complains that it must be a > block device. This happens with or without running 'mkfs' on that partition. > Is there some other program to run to create a "block device" for swapping? > Do you have to specify the swap partitions in the kernal configuration? The entry in /etc/fstab should specifiy the "cooked" or "block" device rather than the "raw" device (regardless of what it actually uses). Most likely you've put the wrong name /dev/rhp1b vs /dev/hp1b in your entry. Second chance would be that you don't have the correct names in /dev for all the partitions of the disk device. mkfs isn't used for swap partitions, since the system (normally) swaps on the entire partition, rather than within the bounds of a filesystem layered onto the device... -- George Robbins - now working for, uucp: {uunet|pyramid|rutgers}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@uunet.uu.net Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
frank@croton.dec.com (Frank Wortner) (09/18/89)
In article <8871@batcomputer.tn.cornell.edu>, eric@batcomputer.tn.cornell.edu (Eric Fielding) writes: > what does one have to do to create a second swap partition on a second disk > drive (in addition to the default b on the system disk)? I tried changing the > partition size with 'chpt' of my /dev/rrz3b partition and entering it into my > /etc/fstab as a swap partition, but "swapon -a" complains that it must be a > block device. This happens with or without running 'mkfs' on that partition. > Is there some other program to run to create a "block device" for swapping? > Do you have to specify the swap partitions in the kernal configuration? > (Oh, in case it makes any difference this is Ultrix 3.0 on a PMAX.) > > ++Eric Fielding > eric@jasper.tn.cornell.edu The "block device" is the non-raw partition. The entry in /etc/fstab should list /dev/rz3b, not /dev/rrz3b. You do have to reconfigure the kernel to add a second swap partition. The configuration file in /sys/conf/mips should have a line like this: config vmunix root on rz0a swap on rz0b and rz3b dumps on rz0b If you want, you can run /etc/doconfig, reply to its questions, and it will generate a config file for you. Before you boot the new kernel, make sure that you have special files in /dev for rz3. Enjoy! Frank