Possible issue with vnd

[D'Arcy Cain <darcy%NetBSD.org@localhost>]

I can't cut and paste the commands I did but I think that the following 
is accurate.

# dd if=/dev/zero of=xubuntu bs=1 seek=100g count=1
# mke2fs xubuntu (from pkgsrc)
# vndconfig -l (to get an available slot)
# mount_ext2fs /dev/vnd2a /mnt
# rsync -av -S ./Xubuntu/ /mnt/ (sync my built up file system)

Is there anything in that list of commands that should have hung the 
system so badly that a reset button restart won't even boot?  I have to 
turn the system off for a few minutes first.

I had this happen twice on one server and suspected the drives so I 
tried it on another and the same thing happened.  It seems to happen 
while copying a large, sparse file over.  Is the fact that the source 
file and target file system are both sparse causing the problem?

Running a recently compiled 7.1.0_PATCH kernel and userland.

--
D'Arcy J.M. Cain <darcy%NetBSD.org@localhost>
http://www.NetBSD.org/ IM:darcy%Vex.Net@localhost