[9fans] p9p venti problem

[Adrian Tritschler <ajft@ajft.org>]

I've got a p9p venti running on two separate ubuntu linux boxes that
I've been using for months to keep backups of data and for QEMU plan9
guests.  They have both stopped working, I suspect due to a recent
ubuntu kernel update.  I've rebuilt all of p9p but to no avail.

The QEMU guests crash on boot stating "error reading block 43a72...3
or wrong score: read too small 1: asked for 0 need at le...
panic: boot process died: unknown"

Any attempt to write data into either venti on the linux systems fails
with the error:

ajft@xyz:~/tmp$ vac x
create bsize 8192 psize 8160
vac: vacfscreate: vacfileroot: read too small 1: asked for 0 need at least 389

reading any existing *.vac file also fails:

ajft@xyz:~/venti/2009/04/24$ unvac -t xyz_bin-2009-04-24.vac
unvac: vacfsopen: read too small 1: asked for 0 need at least 300

Any ideas?
--
Adrian