I already wrote how to expand LVM partition on NetBSD, however expanding root partition is
If you faced this kind of error on your terminal
login as: **** Keyboard-interactive authentication prompts from server: | Password for ****@hostname.tld: End of keyboard-interactive prompts from server Server refused to allocate pty
especially often in PV guest of XEN this means that there are no available terminals you can be attached to.
Fix is easy, and for NetBSD is just one command
mount_ptyfs ptyfs /dev/pts
This creates pseudo filesystem mounted on /dev/pts
Every next login when "normal" terminal - tty is not available you will be redirected to /dev/pts