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PyYoshi/_.md

Created November 5, 2015 04:14
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Mount swap 2GB on CoreOS
Raw
_.md 
$ sudo -i
# touch /2GiB.swap
# chattr +C /2GiB.swap
# fallocate -l 2048m /2GiB.swap
# chmod 600 /2GiB.swap
# mkswap /2GiB.swap
# vim /etc/systemd/system/swap.service
# systemctl enable /etc/systemd/system/swap.service
# systemctl start swap
# free
Raw
swap.service
[Unit]
Description=Turn on swap
[Service]
Type=oneshot
Environment="SWAPFILE=/2GiB.swap"
RemainAfterExit=true
ExecStartPre=/usr/sbin/losetup -f ${SWAPFILE}
ExecStart=/usr/bin/sh -c "/sbin/swapon $(/usr/sbin/losetup -j ${SWAPFILE} | /usr/bin/cut -d : -f 1)"
ExecStop=/usr/bin/sh -c "/sbin/swapoff $(/usr/sbin/losetup -j ${SWAPFILE} | /usr/bin/cut -d : -f 1)"
ExecStopPost=/usr/bin/sh -c "/usr/sbin/losetup -d $(/usr/sbin/losetup -j ${SWAPFILE} | /usr/bin/cut -d : -f 1)"
[Install]
WantedBy=multi-user.target
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