[syslinux] IPMI serial over lan disconnects seem to trigger extlinux reboots
Andrew J. Schorr
aschorr at telemetry-investments.com
Tue Nov 12 14:20:39 PST 2013
On Tue, Nov 12, 2013 at 01:41:29PM -0800, H. Peter Anvin wrote:
> On 11/12/2013 01:22 PM, Andrew J. Schorr wrote:
> > I am using 4.05 because that's what's packaged in the latest Fedora
> > release (Fedora 19 in my case). I wonder why they are using such an
> > old version. I will take a look at how difficult it would be to build
> > the latest version on Fedora.
FYI, it is not so easy to package for Fedora. I see there is an open
bug to get this upgraded:
> One possibility is that either the PXE stack or the BMC uses memory that
> it shouldn't. Try setting a mem= option with less memory than you
> actually have and see if that changes things.
That's an interesting idea. I may give that a try. Just to be clear,
are you talking here about the kernel "mem=" boot parameter, as documented
mem=nn[KMG] [KNL,BOOT] Force usage of a specific amount of memory
Amount of memory to be used when the kernel is not able
to see the whole system memory or for test.
[X86] Work as limiting max address. Use together
with memmap= to avoid physical address space collisions.
Without memmap= PCI devices could be placed at addresses
belonging to unused RAM.
I wonder if that has negative implications for subsequent system performance...
I also think I had the same troubles booting into memtest, so it may be
a more general problem.
Probably the best solution would be to replace these machines with newer
ones, but that will be painful since they are in the field.
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