Comment 3 for bug 1736072

oem@ubuntu:~$ journalctl -b | grep swap
kernel: zswap: loaded using pool lzo/zbud
systemd[1]: Starting Cryptography Setup for cryptswap1...
systemd[1]: Starting Cryptography Setup for cryptswap2...
systemd[1]: Activating swap /dev/disk/by-uuid/edef4081-d956-4b55-891f-a5244c1af87a...
swapon[645]: swapon: /dev/sdb5: swapon failed: Device or resource busy
systemd[1]: dev-disk-by\x2duuid-edef4081\x2dd956\x2d4b55\x2d891f\x2da5244c1af87a.swap: Swap process exited, code=exited status=255
systemd[1]: dev-disk-by\x2duuid-edef4081\x2dd956\x2d4b55\x2d891f\x2da5244c1af87a.swap: Failed with result 'exit-code'.
systemd[1]: Failed to activate swap /dev/disk/by-uuid/edef4081-d956-4b55-891f-a5244c1af87a.
systemd[1]: swap.target: Job swap.target/start failed with result 'dependency'.
mkswap[670]: Setting up swapspace version 1, size = 10.3 GiB (11060899840 bytes)
mkswap[670]: no label, UUID=0990eab9-c134-497c-a6f9-9044ec2ce533
systemd[1]: Started Cryptography Setup for cryptswap1.
mkswap[673]: Setting up swapspace version 1, size = 10.1 GiB (10838601728 bytes)
mkswap[673]: no label, UUID=955383e0-3545-440d-b531-80e8c46e6112
systemd[1]: Started Cryptography Setup for cryptswap2.
systemd[1]: Found device /dev/mapper/cryptswap2.
systemd[1]: Activating swap /dev/mapper/cryptswap2...
systemd[1]: Activated swap /dev/mapper/cryptswap2.
kernel: Adding 10584572k swap on /dev/mapper/cryptswap2. Priority:-1 extents:1 across:10584572k FS