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
[root@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
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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.
[root@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 (brewbuilder@xxxxxxxxxxxxxxxxxxxxxxxxxxxx) (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:
[root@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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