MKSWAP(8) MKSWAP(8) (NAME) mkswap - (Swap) (SYNOPSIS) mkswap [] [] mkswap [] --size --file (DESCRIPTION) mkswap (swap area) . ( /dev/sdb7) . 82 (LINUX_SWAP) swap . (: . .) . ( swap . mkswap . - .) swapon(8) . swap /etc/fstab swapon -a . (WARNING) swap . . swap . mkswap mkfs . mkswap ( SUN BSD ...) . (OPTIONS) -c, --check swap ( ) . . -F, --file swap . -f, --force . swap . mkswap . -q, --quiet . -L, --label (label) swapon(8) . --lock[=] BSD . yes no ( ) nonblock . yes . $LOCK_BLOCK_DEVICE . systemd-udevd(8) . -p, --pagesize ( ). mkswap . -U, --uuid UUID UUID . UUID . UUID : "c1b9d5a2-f162-11cf-9ece-0020afc76f16". UUID : clear UUID random UUID time UUID -e, --endianness ENDIANNESS (ENDIANNESS) . native little big. native . -o, --offset swap . -s, --size swap : KiB (=) MiB (=*) GiB TiB PiB EiB ZiB YiB ( "iB" "K" "KiB" ). (truncate) . --file . -v, --swapversion 1 swap. ( -v 0 -v 1 . 2.5.22 ( ) swap 0 . 1 2.1.117 ( ) .) --verbose . mkswap swap . -h, --help . -V, --version . (ENVIRONMENT) LIBBLKID_DEBUG=all libblkid. LOCK_BLOCK_DEVICE= BSD. "1" "0" . --lock . (NOTES) swap . swap ( ) . swap . swap . /proc/swaps . mkswap . getconf PAGESIZE . mkswap --file swap mkswap : 2.41 mkswap --file nocow swap Btrfs . # dd if=/dev/zero of=swapfile bs=1MiB count=$((8*1024)) swap 8GiB. swapon(8) swap ( copy-on-write) . (SEE ALSO) fdisk(8), swapon(8) (REPORTING BUGS) . (AVAILABILITY) mkswap util-linux . . util-linux 2.41.5 2026-06-16 MKSWAP(8)