Dharmosoth Seetharam <dseetharam at inbox.com> writes: >> -----Original Message----- >> From: ebiederm at xmission.com >> Sent: Sat, 13 Jun 2009 00:11:25 -0700 >> To: dseetharam at inbox.com >> Subject: Re: /var/log/messages doesn't have crash info when kernel gets >> panic/oops/crash >> >> Dharmosoth Seetharam <dseetharam at inbox.com> writes: >> >>> Hi Neil, >>> >>> Thanks for your quick reply. >>> >>> What you have suggested is nice when we got/save crash dump (i.e vmcore) >>> What if we failed to save/capture vmcore info or vmcore is corrupted >>> etc. then we dont get any information >>> regarding the panic/crash/oops at anywhere? >> > Hi Eric, > >> Basic questions. >> 1) Do you have panic on oops set? >> I think that setting more than anything else will be the >> difference in what shows up in /var/log/messages. > > Yes, in my case panic_on_oops was set with 1 That is the reason thing don't show up in /var/log/messages because you panic before syslog has a chance to write the messages. >> 2) Have you tried a dry run and confirmed you can get a crash dump? > > No, I haven't tried this. It sounds like you have not been getting the coredumps when problems happen. Running a simple test run to Alt-sysrq-c to confirm that things are basically setup ok is a good idea. >> 3) Are you using kvm > kvm? kernel virtual memory? Kernel virtual machine. In particular. Hardware acceleration for virtual machines. Eric
