It is used for backups and long-term storage and anything else that I can’t have disappear on me. I have an existing ZFS mirrored zvol (4 x 3TB) running on Ubuntu 16-ish which is served to a win-10 desktop via samba.In this case the space was available but it is my favorite way to allocate storage. The –s option enables a sparse volume feature aka thin provisioning. I chose to use 64k for the block size which aligns with VMWare default allocation size thus optimizing performance. It’s done by adding the –b 64K to the ZFS create command.Because storing the swap space in a ZVOL would. But they added a note: If there is no real memory available, the system might become unresponsive. zfs create -V 2G -o org.freebsd:swap=on -o checksum=off -o compression=off -o dedup=off -o sync=disabled -o primarycache=none zroot/swap.2- Create a ZFS volume with the same size: $ ls -l machine.img -rw- 1 user user 8589934592 nov 25 10:47 machine.img # zfs create -s -V 8589934592b mypool/machine 3- Copy the raw image into that partition:.
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