I had another dom0 crash, although this time the other VMs are still up
and running. I still don''t see anything on the serial console as far
as crash messages or debug output or anything.
My grub is currently set up like:
title Gentoo Xen-linux (2.4.26)
kernel /xen-20040713.gz dom0_mem=65536 com1=115200,8n1
console=vga,com1
module /bzImage-2.4.26-xen0 root=/dev/hda3 ro
Can anyone give me any hints as to what I could be doing wrong/what I
should be doing to see useful data from the Xen kernel if there''s
another crash?
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You could try building Xen with ''debug=y make''. That adds a load more diagnostic messages. How does DOM0 die? If it crashed out completely then the machine would reboot - so presumably it is hanging? That would be harder to debug. -- Keir> > I had another dom0 crash, although this time the other VMs are still up > and running. I still don''t see anything on the serial console as far > as crash messages or debug output or anything. > > My grub is currently set up like: > > title Gentoo Xen-linux (2.4.26) > kernel /xen-20040713.gz dom0_mem=65536 com1=115200,8n1 > console=vga,com1 > module /bzImage-2.4.26-xen0 root=/dev/hda3 ro > > Can anyone give me any hints as to what I could be doing wrong/what I > should be doing to see useful data from the Xen kernel if there''s > another crash? > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > "We all enter this world in the | Support Electronic Freedom > same way: naked; screaming; soaked | http://www.eff.org/ > in blood. But if you live your | http://www.anti-dmca.org/ > life right, that kind of thing |--------------------------- > doesn''t have to stop there." -- Dana Gould > > > > ------------------------------------------------------- > This SF.Net email is sponsored by BEA Weblogic Workshop > FREE Java Enterprise J2EE developer tools! > Get your free copy of BEA WebLogic Workshop 8.1 today. > http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > I had another dom0 crash, although this time the other VMs are still up > and running. I still don''t see anything on the serial console as far > as crash messages or debug output or anything. > > My grub is currently set up like: > > title Gentoo Xen-linux (2.4.26) > kernel /xen-20040713.gz dom0_mem=65536 com1=115200,8n1 > console=vga,com1 > module /bzImage-2.4.26-xen0 root=/dev/hda3 ro >xen doesn''t have a ''console='' cmdline parameter --- you want to be passing this to linux. Try: title Gentoo Xen-linux (2.4.26) kernel /xen-20040713.gz dom0_mem=65536 com1=115200,8n1 module /bzImage-2.4.26-xen0 root=/dev/hda3 ro console=ttyS0 If you also want console on the vga, I think you can add a second ''console=tty'' option. This should hopefully get you an oops message dumped to the serial line if it happens again. Ian ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Jul 17, 2004, at 4:25 AM, Keir Fraser wrote:> > You could try building Xen with ''debug=y make''. That adds a load more > diagnostic messages. How does DOM0 die? If it crashed out completely > then the machine would reboot - so presumably it is hanging? That > would be harder to debug.I''ll give that a try. I''m not sure what it''s doing exactly. I''ve been logged in via ssh, four VMs running all doing compiling or something equally taxing on the hardware, then start something that does a lot of i/o on the dom0 host and I''ll get booted out and find that the dom0 host no longer responds to ping or anything else, but nothing on the console indicating any problems. Then it reboots. Once the VMs all stayed alive until I walked to the physical console and tapped the "enter" key a couple of times, at which point the whole machine rebooted. This has happened three or four times now, so I''m pretty sure I can make it happen again. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "We all enter this world in the | Support Electronic Freedom same way: naked; screaming; soaked | http://www.eff.org/ in blood. But if you live your | http://www.anti-dmca.org/ life right, that kind of thing |--------------------------- doesn''t have to stop there." -- Dana Gould ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
On Jul 17, 2004, at 5:46 AM, Ian Pratt wrote:> xen doesn''t have a ''console='' cmdline parameter --- you want to > be passing this to linux. Try:Will do your suggestions and see if I can get anything out of it. I got that GRUB config from one of the 1.2 howtos, which I guess is no longer valid. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "We all enter this world in the | Support Electronic Freedom same way: naked; screaming; soaked | http://www.eff.org/ in blood. But if you live your | http://www.anti-dmca.org/ life right, that kind of thing |--------------------------- doesn''t have to stop there." -- Dana Gould ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721&alloc_id=10040&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel