-> How to add swap space online to a zfs root env
Procedure:
# zfs create -V 16g rpool/swap2
# swap -a
# swap -l
swapfile dev swaplo blocks free
/dev/zvol/dsk/rpool/swap 304,1 16 33554416 33554416
# swap -a /dev/zvol/dsk/rpool/swap2
# swap -l
swapfile dev swaplo blocks free
/dev/zvol/dsk/rpool/swap 304,1 16 33554416 33554416
/dev/zvol/dsk/rpool/swap2 304,3 16 33554416 33554416
Update /etc/vfstab
# vi /etc/vfstab
# grep -i swap /etc/vfstab
swap - /tmp tmpfs - yes nosuid
/dev/zvol/dsk/rpool/swap - - swap - no -
/dev/zvol/dsk/rpool/swap2 - - swap - no -
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