Check out this presentation on linuxvm.org: Help! My (Virtual) Penguin Is Sick! http://linuxvm.org/present/SHARE108/S9248ps.pdf
There's a section on VMDUMP, which will give you a kernel memory dump. You'll need to convert it using 'vmconvert', which is available in the s390utils package. This is assuming you're using DASD. If it's a zFCP-only setup, the process is a little different. -Brad On Mon, 2007-07-30 at 13:57 -0400, Morris, Kevin J. (LNG-DAY) wrote: > We have a linux guest that frequently encounters a kernel panic, effectively > killing the box. Thankfully, we have IBM Operations Manager and can trap the > HCP message and instantly reboot the box once it hits the disabled wait > state. We are running the latest RHEL4 maintenance on this guest and would > like to provide a dump to RedHat. How can we trigger/capture a dump when the > kernel panics? > > Below is the console log for this guest at the time of the panic: > > 07/30/2007 05:49:55 kernel BUG at mm/filemap.c:2245! > 07/30/2007 05:49:55 illegal operation: 0001 Ý#1¨ > 07/30/2007 05:49:55 CPU: 1 Not tainted > 07/30/2007 05:49:55 Process chmod (pid: 15271, task: 000000005b94ccb0, ksp: > 000000005eb1beb8) > 07/30/2007 05:49:55 Krnl PSW : 0700000180000000 000000000006cf98 > (generic_file_aio_write+0x60/0x134 > 07/30/2007 05:49:55 > 07/30/2007 05:49:55 Ý<000000000002ff7e>¨ sysc_noemu+0x10/0x16 > 07/30/2007 05:49:55 Ý<00000200000c0700>¨ 0x200000c0700 > 07/30/2007 05:49:55 > 07/30/2007 05:49:55 <0>Kernel panic - not syncing: Fatal exception: > panic_on_oops > 07/30/2007 05:49:55 00: HCPGSP2629I The virtual machine is placed in CP mode > due to a SIGP stop from CPU 01. > 07/30/2007 05:49:55 01: HCPGIR450W CP entered; disabled wait PSW 00020001 > 80000000 00000000 00018A66 > 07/30/2007 05:49:55 CP SEND TPC3675 IPL CMS PARM AUTOCR > > Thanks, > Kevin Morris > LexisNexis, a division of Reed Elsevier Inc. > z/OS System Engineering > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 -- Brad Hinson <[EMAIL PROTECTED]> Sr. Support Engineer Lead, System z Red Hat, Inc. (919) 754-4198 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
