tried it all over again to get a more isolated log content and got the following:
freenas freenas[2038]: [MiddlewareError: The command /usr/local/
sbin/pbi_add -e -f -o /mnt/caviar/jail --no-checksig /var/tmp/firmware/pbifile.
pbi failed: "rm: /mnt/caviar/jail/plugins_jail-amd64/lib/libthr.so.3: Operation
not permitted rm: /mnt/caviar/jail/plugins_jail-amd64/lib/libc.so.7: Operation n
ot permitted rm: /mnt/caviar/jail/plugins_jail-amd64/lib/libcrypt.so.5: Operatio
n not permitted rm: /mnt/caviar/jail/plugins_jail-amd64/lib: Directory not empty
rm: /mnt/caviar/jail/plugins_jail-amd64/bin/rcp: Operation not permitted rm: /m
nt/caviar/jail/plugins_jail-amd64/bin: Directory not empty rm: /mnt/caviar/jail/
plugins_jail-amd64/usr/bin/ypchfn: Operation not permitted rm: /mnt/caviar/jail/
plugins_jail-amd64/usr/bin/ypchpass: Operation not permitted rm: /mnt/caviar/jai
l/plugins_jail-amd64/usr/bin/ypchsh: Operation not permitted rm: /mnt/caviar/jai
l/plugins_jail-amd64/usr/bin/opiepasswd: Operation not permitted rm: /mnt/caviar
/jail/plugins_jail-amd64/usr/bin/crontab: Operation not permitted rm
Apr 22 20:26:58 freenas kernel: rmitted rm
seems like a permission issue, in that what ever 'user' executes the pki process is not able to perform all the steps listed.
any ideas on which user, which permissions it needs and how to fix it?
opened a ticket with this for devs as well
http://support.freenas.org/ticket/1483