Hello, I have this issue with compressed RHEL5 vmcore files, I can't get it to loaded to the crash utility. I don't have this problem with RHEL4 vmcores (diskdump). The debuginfo kernel exactly matches the kernel version that generated the vmcore
[r...@test-fc12 ~]# crash > usr/lib/debug/lib/modules/2.6.18-92.1.10.el5debug/vmlinux > /nas01/cores/2.6.18-92.1.10.el5.vmcore > > crash 4.0.9-2.fc12 > Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Red Hat, Inc. > Copyright (C) 2004, 2005, 2006 IBM Corporation > Copyright (C) 1999-2006 Hewlett-Packard Co > Copyright (C) 2005, 2006 Fujitsu Limited > Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. > Copyright (C) 2005 NEC Corporation > Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. > Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. > This program is free software, covered by the GNU General Public License, > and you are welcome to change it and/or distribute copies of it under > certain conditions. Enter "help copying" to see the conditions. > This program has absolutely no warranty. Enter "help warranty" for > details. > > GNU gdb 6.1 > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you > are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "x86_64-unknown-linux-gnu"... > > crash: page excluded: kernel virtual address: ffffffff804f1260 type: > "possible" > WARNING: cannot read cpu_possible_map > crash: usr/lib/debug/lib/modules/2.6.18-92.1.10.el5debug/vmlinux and > /nas01/cores/2.6.18-92.1.10.el5.vmcore do not match! > > Usage: > crash [-h [opt]][-v][-s][-i file][-d num] [-S] [mapfile] [namelist] > [dumpfile] > > Enter "crash -h" for details. > [r...@test-fc12 ~]# strings > usr/lib/debug/lib/modules/2.6.18-92.1.10.el5debug/vmlinux | grep 2.6 | head > -2 > Linux version 2.6.18-92.1.10.el5debug ( > [email protected]) (gcc version 4.1.2 20071124 (Red > Hat 4.1.2-42)) #1 SMP Wed Jul 23 04:27:38 EDT 2008 > 2.6.18-92.1.10.el5debug SMP mod_unload gcc-4.1 > running strings on the rhel5 vmcore file: [r...@test-fc12 cores]# strings 2.6.18-92.1.10.el5.vmcore | grep 2.6 | head > -2 > 2X6 > 2T6( > does makedumpconfig's compression have something to do with this? from kdump.conf on the machine where i got that vmcore: ... > core_collector makedumpfile -c -d31 > ... > Thank you in advace! Regards, Marc
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