RH now exiting 1 more data center

[Michael Gargiullo]

On Tue, 2004-02-24 at 22:44, Norman Gaywood wrote:
> On Tue, Feb 24, 2004 at 09:40:27PM -0500, Michael Gargiullo wrote:
> > I find this thread very interesting. We run several multiproc boxes on
> > FC1 without a hitch.  I will say, I don't think any of them are overly
> > stressed, I like to over build when I have the chance.
> > 
> > Tyan MB with AMD chips, and Dell 2650's dual Intel Xeon w
> > hyperthreading.
> 
> I have on of those, amongst others, and I can get it to lockup at will.
> 
> > We run the FC1 SMP kernels...  Should I be looking for anything specific
> > to go wrong?
> 
> These are the bugzillas:
> 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=109962
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=109497
> 
> The thing, in fact the only thing I can see, that triggers this bug is a
> umount. http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=109962#c40
> has a script that continuously mount/umount's a small loop-back file
> system. Hangs my FC1 SMP systems every time.
> 
> I have got also got hangs when a new kernel is installed. One of the
> last steps of this is the creation of the initrd. That involves a loop
> back mount, and an umount. The kernel sometimes locks up on the umount.
> 
> My impression is that the lockup is more likely to occur if there is
> some disk activity at the time.
> 


Interesting.  My backup script mounts and unmounts a pair of IDE drives
(swapping them based on the day).

I guess I'll have to keep a closer eye on it.