Looks like masking systemd-udevd removes this behavior. Need to figure out where it actually clears everything out.
ubuntu@maas-xenial4:~$ sudo systemctl mask systemd-udevd 11:32 PM Created symlink from /etc/systemd/system/systemd-udevd.service to /dev/null.
# reboot
ubuntu@maas-xenial4:~$ ls /dev/bcache/by-uuid/ 2963855b-3d2b-4387-abd1-3ae788919de4 727212eb-0f0b-4d20-9191-f0577a38454e 835afacf-6213-48a9-864c-43733822668b aa04ab39-a42c-446f-aff5-addbd9c80e06
Looks like masking systemd-udevd removes this behavior. Need to figure out where it actually clears everything out.
ubuntu@ maas-xenial4: ~$ sudo systemctl mask systemd-udevd system/ systemd- udevd.service to /dev/null.
11:32 PM Created symlink from /etc/systemd/
# reboot
ubuntu@ maas-xenial4: ~$ ls /dev/bcache/ by-uuid/ 3d2b-4387- abd1-3ae788919d e4 727212eb- 0f0b-4d20- 9191-f0577a3845 4e 835afacf- 6213-48a9- 864c-4373382266 8b aa04ab39- a42c-446f- aff5-addbd9c80e 06
2963855b-