Compiling Swap space
John R. Levine
johnl at iecc.com
Tue Feb 27 19:16:11 UTC 2018
> You don't need mdconfig, just make a large file and use swapon like this:
>
># dd if=/dev/zero of=swapfile bs=1m count=1024
># swapon swapfile
Nope. Try it. You need a block device.
# dd if=/dev/zero of=/var/swap bs=1m count=100
100+0 records in
100+0 records out
# swapon /var/swap
swapon: /var/swap: Block device required
# mdconfig -f /var/swap
md0
# swapon /dev/md0
#
Assuming you want your swap space to come back after a reboot, put a
line into /etc/fstab and it'll do the mdconfig and mount at boot time:
# Device Mountpoint FStype Options Dump Pass#
/dev/vtbd1 none swap sw 0 0
/dev/vtbd0s1a / ufs rw 1 1
md99 none swap sw,file=/var/swap,late 0 0
--
Regards,
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly
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