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.
