My kernel crashdumps don't work with vanilla 3.12.30 on a 256GB x86_64
intel box.
Centos-6.4. With the standard makedumpfile, makedumpfile segfaults, and
no output is written to disk.
with makedumpfile 1.5.7, kexec-tools-2.0.8, and crash 7.0.2 I actually
get vmcore files,
but then crash rejects them with:
crash vmcore /boot/vmlinux-3.12.30
crash 7.0.2
...
GNU gdb (GDB) 7.6
...
crash: seek error: kernel virtual address: ffff88207fffcb60 type:
"pglist node_id"
the grub entry for this kernel is:
kernel /boot/vmlinuz-3.12.30 ro root=LABEL=ROOT
numa_balancing=disable intel_idle.max_cstate=0 processor.max_cstate=0
mce=ignore_mce clocksource=tsc nohz=off nomodeset nodmraid rd_NO_LUKS
rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16
KEYBOARDTYPE=pc KEYTABLE=us crashkernel=256M at 256M console=ttyS1,115200n8
CONFIG_CRASH_DUMP=y
CONFIG_KEXEC_JUMP=y
CONFIG_PHYSICAL_START=0x2000000
CONFIG_RELOCATABLE=y
CONFIG_PHYSICAL_ALIGN=0x1000000
A similar issue appears with a grub crashkernel=128M at 32M
Turning off all the makedumpfile exclusions (dump all pages) results in
a much larger
vmcore, but it still gets the same failures.
Where do I start looking for the problems here?
kernel 3.10.65 won't dump either, but an old 3.0.29 kernel dumps just fine.
Is this a problem with some .config setting?
Berkley
--
//E. F. Berkley Shands, MSc
Senior Software Architect/Engineer
Exegy Systems Engineering//
**Exegy Inc.**
349 Marshall Road, Suite 100
St. Louis , MO 63119
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Cell: (314) 303-2546
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