[CentOS] VZFS issues

Hello listmates,

Normally whenever I needed to grab the contents of a disk/partition in its
entirety I would just use dd to pipe it wherever I wanted and that would
just work.

However, with a VZFS partition on a Parallels VM itdoes not seem to work:

root at nei [~]# dd if=/dev/vzfs of=/dev/null bs=1M count=50
dd: opening `/dev/vzfs': Permission denied
root at nei [~]#

root at nei [~]# mount
/dev/vzfs on / type reiserfs (rw,usrquota,grpquota)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
none on /dev type tmpfs (rw,relatime)
none on /dev/pts type devpts (rw,relatime)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
none on /backup/tmpdir type tmpfs (rw,size=800M)
root at nei [~]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/vzfs             62390272  37075204  25315068  60% /
none                    393216         4    393212   1% /dev
none                    819200         0    819200   0% /backup/tmpdir
root at nei [~]#

Any idea why this is and how to work around it?

Any advice will be much appreciated.

Boris.