On Wed, 1 Jul 2020, Robert Kopp wrote:
I wanted to try this amazing new file system, which is now one of the installation options for Focal. Unfortunately, I did not set up enough swap space for hibernation, which I would like. So I'm wondering if anyone could suggest a method of increasing swap space on my system, which appears below. I have plenty of USB ports, so I would even be open to using a flash drive for this purpose. I note that it seems anxious to grab my external storage device, so perhaps it would resume from something more appropriate.Filesystem 1K-blocks Used Available Use% Mounted onudev 16315052 0 16315052 0% /dev tmpfs 3278412 2136 3276276 1% /run rpool/ROOT/ubuntu_4uu5jb 450678784 4601088 446077696 2% / tmpfs 16392060 250784 16141276 2% /dev/shm tmpfs 5120 4 5116 1% /run/lock tmpfs 16392060 0 16392060 0% /sys/fs/cgroup bpool/BOOT/ubuntu_4uu5jb 1517056 276096 1240960 19% /boot rpool/ROOT/ubuntu_4uu5jb/var/games 446077824 128 446077696 1% /var/games rpool/ROOT/ubuntu_4uu5jb/var/snap 446077952 256 446077696 1% /var/snap rpool/USERDATA/robert_xnnmf3 452219392 6141696 446077696 2% /home/robert rpool/ROOT/ubuntu_4uu5jb/var/mail 446077824 128 446077696 1% /var/mail rpool/ROOT/ubuntu_4uu5jb/srv 446077824 128 446077696 1% /srv rpool/ROOT/ubuntu_4uu5jb/var/lib 447230720 1153024 446077696 1% /var/lib rpool/ROOT/ubuntu_4uu5jb/var/lib/NetworkManager 446077952 256 446077696 1% /var/lib/NetworkManager rpool/ROOT/ubuntu_4uu5jb/var/www 446077824 128 446077696 1% /var/www rpool/ROOT/ubuntu_4uu5jb/var/spool 446077952 256 446077696 1% /var/spool /dev/sda1 523248 21268 501980 5% /boot/efi rpool/ROOT/ubuntu_4uu5jb/var/log 446102400 24704 446077696 1% /var/log rpool/ROOT/ubuntu_4uu5jb/usr/local 446077824 128 446077696 1% /usr/local rpool/USERDATA/root_xnnmf3 446078208 512 446077696 1% /root rpool/ROOT/ubuntu_4uu5jb/var/lib/AccountsService 446077824 128 446077696 1% /var/lib/AccountsService rpool/ROOT/ubuntu_4uu5jb/var/lib/dpkg 446125184 47488 446077696 1% /var/lib/dpkg rpool/ROOT/ubuntu_4uu5jb/var/lib/apt 446144768 67072 446077696 1% /var/lib/apt
If you want to use your rpool, and you've got the space to spare, here's one way to go about it. This is for a 4GB swap partition.
# create a zfs filesystem, with compression (optional) zfs create -V 4G -b 4096 \ -o compression=lz4 -o logbias=throughput -o sync=always \ -o primarycache=metadata -o secondarycache=none \ rpool/swap # make it into swap fs mkswap -f /dev/zvol/rpool/swap # turn it on swapon /dev/zvol/rpool/swap -- Paul Heinlein heinl...@madboa.com 45°38' N, 122°6' W
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