Re: [BProc] Beoboot lanl.1.3 booting problems..

[Wilton W. <ww...@ha...>]

Well after working a bit more it appears I may have a genuine bug in
_bproc_vrfork_io(), I can seem to only fork off one process at a time, see the
attached patch to beoboot../node_up/node_up.c and see what I mean.

Anyways we have no ideas here.. and really have no clue as to what is supposed
to happen or what is not happening ;) this patch was sort of a "we know what
works" now let's just do that type patch.. not for use in real production
environments. All I know is that with this patch I am able to boot more than 1
node at the same time.

Our local linux hacker had this to say "I don't know what is going on.. this 
patch is one big hack" when he "fixed" this. ;)

I am currently running:

beoboot-lanl.1.3
bproc-3.2.1
linux-2.4.19+bproc patches

- Wilton

Original Message Follows:

> I am having a bit of difficulty booting more than one node at the same time,
> (booting works if I stagger the booting) something seems to hang up when I
> reach the point in boeoboot where it starts the node_up worker processes for
> more than 1 node..
> 
> In /var/beowulf/node.2 .. node.3 .. etc... I see it hangs here:
> <SNIP>
> ...
> nodeup    :   Plugin vmadlib returned status 0 (ok)
> nodeup    :   No premove function for nodeinfo
> nodeup    : Starting 2 child processes.
> </SNIP>
> 
> In /var/log/messages
> <SNIP>
> Oct  8 17:43:52 srv001 beoserv: Starting node_up worker for 2 clients.
> </SNIP>
> 
> The cluster boots fine if nodeup only starts 1 child process at a time.
> 
> <SNIP>
> ...
> nodeup    :   Plugin vmadlib returned status 0 (ok)
> nodeup    :   No premove function for nodeinfo
> nodeup    : Starting 1 child processes.
> nodeup    : Running postmove functions
> nodeup    :   Calling postmove for kmod
> nodeup    :   Plugin kmod returned status 0 (ok)
> ...
> </SNIP>
> 
> <SNIP>
> Oct  8 17:50:49 srv001 beoserv: Starting node_up worker for 1 clients.
> </SNIP>

 ----[   Wilton William Wong    ]---------------------------------------------
   11060-166 Avenue         Ph : 01-780-456-9771       High Performance UNIX
   Edmonton, Alberta        FAX: 01-780-456-9772        and Linux Solutions
   T5X 1Y3, Canada                   URL: http://www.harddata.com
 -------------------------------------------------------[ Hard Data Ltd. ]----