[Gluster-devel] 2.0.0rc4 (and rc5) locks up when used as root

[Gordan Bobic]

As suspected, chmod -x /etc/sysconfig/modules/udev-stw.modules fixes the 
immediate problem. It would appear things like:

for file in /etc/sysconfig/modules/*.modules ; do
   [ -x $file ] && $file
done

seem to cause it to lock up.

Unfortunately, that sort of thing happens all over the place in the boot 
scripts, and now it locks up a few steps later. The last version this 
worked with was rc2 (possibly rc3, I haven't tested it). It's definitely 
not working on rc4 and rc5.

Gordan

Gordan Bobic wrote:
> Anand Avati wrote:
>>> It looks like it locks up when used as root (afr/replicate) at the point
>>> where it initially starts up udev (not 100% sure where exactly yet, will
>>> have to put some trace code in rc.sysinit).
>>>
>>> 2.0.0rc2 didn't have this problem.
>>>
>>
>> Can you try rc5? Though still it is still under QA, you might want to
>> give it a try since some transport related code changes have gone it
>> which might be the reason for your lockup.
> 
> The lock-up still occurs with rc5.
> 
> I've done some more digging, however. It appears to die at this pint in 
> rc.sysinit, between debug 3 and debug 4:
> 
> #################
> echo "debug 3"
> # Load other user-defined modules
> for file in /etc/sysconfig/modules/*.modules ; do
>   [ -x $file ] && $file
> done
> 
> # Load modules (for backward compatibility with VARs)
> if [ -f /etc/rc.modules ]; then
>         /etc/rc.modules
> fi
> echo "debug 4"
> #################
> 
> There is no rc.modules file, so contents of that can be ruled out.
> 
> # ls -l /etc/sysconfig/modules/
> total 8
> -rwxr-xr-x 1 root root 100 May 25  2008 udev-stw.modules
> 
> # cat /etc/sysconfig/modules/udev-stw.modules
> #!/bin/sh
> for i in nvram floppy parport lp snd-powermac;do
>         modprobe $i >/dev/null 2>&1
> done
> 
> I have just rebuilt my initrds separately with rc2 and rc5. rc2 works 
> fine, rc5 fails. No other changes to the system between the two attempts.
> 
> Oh, and the first access failure bug is still there.
> 
> I couldn't test for the memory leak in rc5 since I couldn't get it to 
> boot due to the lock-up mentioned above.
> 
> I'll try disabling those modules listed above since I don't need them on 
> this setup, but I can confirm that modprobe itself works fine. So it 
> sounds like a problem/bug elsewhere. Possibly a buffer-overrun somewhere 
> that gets triggered by rc4/rc5.
> 
> BTW, in case it's relevant, I'm using the fuse kernel module from 
> 2.6.24.7, rather than the one from the patched package, because the one 
> in the kernel appears to be later. Can anyone confirm if there are any 
> known problems with this? Is there any strong reason why I should use a 
> different kernel module (e.g. one from the patched fuse 2.7.4 package)?
> 
> Gordan
> 
> 
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