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Set up swap on CoreOS
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| [Unit] | |
| Description=Turn on swap | |
| [Service] | |
| Type=oneshot | |
| Environment="SWAPFILE=/4GiB.swap" | |
| RemainAfterExit=true | |
| ExecStartPre=/usr/bin/touch ${SWAPFILE} | |
| ExecStartPre=/usr/bin/chattr -C ${SWAPFILE} | |
| ExecStartPre=/usr/bin/fallocate -l 4096m ${SWAPFILE} | |
| ExecStartPre=/usr/bin/chmod 600 ${SWAPFILE} | |
| ExecStartPre=/usr/sbin/mkswap ${SWAPFILE} | |
| 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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