Need to make swap device out of disk slice
Hello,
I have inhereted a problem with one of our Solaris 9 machines. When it was set up, we did a custom filesystem layout (always have). The tradition is to put / on slice 0, and swap on slice 1 with a space roughly 2 times the physical memory space.
However, I goofed, and put /swap instead of just "swap". So now, it has a / filesystem, a /swap filesystem, and no swap device!
# swap -l
No swap devices configured
# df -k
/dev/dsk/c0t0d0s0 3328137 3052914 241942 93% /
/proc 0 0 0 0% /proc
mnttab 0 0 0 0% /etc/mnttab
fd 0 0 0 0% /dev/fd
swap 332384 168 332216 1% /var/run
swap 332352 136 332216 1% /tmp
/dev/dsk/c0t0d0s1 768721 9 714902 1% /swap(ignore the /newsdir, it's on another disk)
I have added swap space before using 'mkfile' and 'swap -a' before, but what I want to do is blow away the /swap partition and re-format (if necessary) and re-mount as a regular swap partition.
This server is in production (yikes!), so any helpful hints that don't involve downtime would be appreciated.
I'm going to assume I need to edit vfstab and run the format command at LEAST, but I'm not entirely sure of the correct method.
TIA,
-Jacob Vann
New Mexico State University
You're ok here.
Simply unmount the /swap file system, edit /etc/vfstab and change swap to point to this location like normal. Then you should able to swap -a on it I think. I reboot might be necessary - not sure as I've never had to fix something like this. Once you fix /etc/vfstab, a reboot will definitely fix it :)
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