Jarod Wilson wrote: > On Mon, 2006-10-16 at 14:02 -0400, Dave Anderson wrote: > > > I've been playing with xen dumping on x86_64 and x86 (RHEL5 20061006.2); > > > The following is a simple crash session on x86_64 (using "xm dump-core > > > -L"): > > > > Interesting. It kind of looks like there's something different about the > > corefile contents when using "xm dump-core" as opposed to forcing > > a "real" crash, i.e., such as when using sysrq-c? > > Hrm, yeah, interesting... Last I tried with an actual forced crash of a > guest, everything looked as expected when I spun up crash on the > resulting core file. Of course, its been two or three weeks now, so it > coulda changed. ;) Actually, my best guess is that crash it just getting confused trying to handle the "panic" task -- it presumes that there is one since it's a xen "coredump" file, but in this case, there really isn't one. The new "xm core-dump -L" facility is taking a "live dump" of a live system without forcing a panic. (I'm not sure what other flags besides "-L" exist, and what they would do differently...) Dave > > > > > Is xen dumping > > > supported on x86, x86_64, ppc, ia64? > > > > x86 and x86_64 only -- ia64 is still TBD. > > ia64... yeah... I can't even get a xen guest to install w/o panicking > dom0... :( > > > > Can anyone point me to docs that > > > talk about xen dumping (e.g. internal/external wiki?) > > > > None that I'm aware of... > > > > The best thing that you can do is come over to my office, > > and we'll get to the bottom of this. In the meantime, it would > > be interesting to know whether the behavior above is the > > same when you: > > > > 1. log into the domU > > 2. echo c > /proc/sysrq-trigger > > And another way to do it: if your domU has sysrqs enabled, then you can > issue 'xm sysrq <domU name> c' from the dom0. That's actually what will > get used for the rhts xen dumping test I've been meaning to finally > write for some time now... :) > > -- > Jarod Wilson > jwilson@xxxxxxxxxx > > -- > Crash-utility mailing list > Crash-utility@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/crash-utility -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
