ggatec hanging on 7.0-RC1/amd64

[Kris Kennaway]

Hugo Silva wrote:
> Hi,
> 
> I'm experiencing some problems while attempting to export a ZVOL with 
> ggated on a gigabit network.
> 
> 
> All servers are running FreeBSD 7.0-RC1 on amd64, and using bce NICs.
> 
> 
> 
> client# ggatec create -t 6 -u 0 172.16.100.200 /dev/zvol/storage/vol0
> 
> client# ls -l /dev/ggate*
> crw-r-----  1 root  operator    0, 115 Jan  4 06:23 /dev/ggate0
> 
> client# newfs /dev/ggate0
> load: 0.00  cmd: newfs 51187 [g_waitidle] 0.00u 0.00s 0% 792k
> ^C^C^C^C^C^C^C^C^C^C^C^C^C^C
> 
> 
> The same happens with a file exported on a UFS filesystem (so it's not a 
> ZFS problem):
> 
> 
> client# ggatec create -u100 172.16.100.200 /usr/lol
> 
> client# dir /dev/ggate100
> crw-r-----  1 root  operator  -   0, 115 Jan  4 06:23 /dev/ggate100
> 
> client# newfs /dev/ggate100
> load: 0.00  cmd: newfs 52306 [g_waitidle] 0.00u 0.00s 0% 792k
> load: 0.00  cmd: newfs 52306 [g_waitidle] 0.00u 0.00s 0% 792k
> load: 0.00  cmd: newfs 52306 [g_waitidle] 0.00u 0.00s 0% 792k
> ^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z^Z 
> 
> 
> 
> After several killall -9 ggatec and ggatec -fuX (-uX will stop working 
> after awhile with "device busy", even though no ggatec process is using 
> it anymore and the newfs process is also killed), the following happens:
> 
> # killall -9 ggatec
> load: 0.00  cmd: killall 52400 [sysctl lock] 0.00u 0.00s 0% 244k
> load: 0.00  cmd: killall 52400 [sysctl lock] 0.00u 0.00s 0% 244k
> load: 0.00  cmd: killall 52400 [sysctl lock] 0.00u 0.00s 0% 244k
> 
> At this point, the machine is dead. It still replies to pings, but 
> processes are definitely unkillable now and even trying to login via SSH 
> doesn't work:
> 
> $ ssh client
> load: 0.05  cmd: ssh 2127 [sbwait] 0.00u 0.00s 0% 3180k
> [hangs forever]
> 
> 
> /etc/gg.exports on the server:
> client.ip/32 RW /dev/zvol/storage/vol0
> 
> 
> Am I missing something terribly obvious ? I have done this many times 
> before and never encountered this problem..

Please see

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html

for how to proceed.

Kris