OpenRC fails to boot us up. See the following boot log:

Booting command-list

root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
kernel /boot/vmlinuz-2.6.38.2-grsec root=/dev/xvda1 modules=ext3 quiet
initrd /boot/initramfs-2.6.38.2-grsec

close blk: backend=/local/domain/0/backend/vbd/32/51712 node=device/vbd/51712
close blk: backend=/local/domain/0/backend/vbd/32/51776 node=device/vbd/51776
close blk: backend=/local/domain/0/backend/vbd/32/51792 node=device/vbd/51792
[ 0.184446] i8042: No controller found
Alpine Init 2.3.3

OpenRC 0.8.0.155803c5 is starting up Linux 2.6.38.2-grsec (x86_64) [XENU]

* You have cruft in /proc that should be deleted
* Mounting /proc …mount: mounting proc on /proc failed: Device or resource busy
[ !! ]
* Mounting xenfs … [ ok ]
* WARNING: rc_sys not defined in rc.conf. Falling back to automatic detection
* Caching service dependencies … [ ok ]

I do not think this is an openrc-specific issue for the record.

(from redmine: issue id 584, created on 2011-04-16, closed on 2011-04-17)