Re: How to specify kernel version when restart kdump

[Gianluca Cecchi <gianluca.cecchi@xxxxxxxxx>]

On Thu, Mar 28, 2019 at 9:24 AM Gianluca Cecchi <gianluca.cecchi@xxxxxxxxx>
wrote:

>
>
> 1) In CentOS 6 we have the classical SysV service
> file: /etc/rc.d/init.d/kdump
>
> Supposing you have just installed 2.6.32-642.13.1.el6.x86_64 kernel
>
> [snip]

>
> and at the end it runs this command if it doesn't find one:
> $MKDUMPRD $kdump_initrd $kdump_kver
>
> that tipically will translate in:
>
> /sbin/mkdumprd -d -f "/boot/initrd-2.6.32-642.13.1.el6.x86_64kdump.img"
>
>
The command line fo CentOS 6 clearly misses the kernel version to build
initrd file for, so the correct command should be:

/sbin/mkdumprd -d -f
"/boot/initrd-2.6.32-642.13.1.el6.x86_64kdump.img"  2.6.32-642.13.1.el6.x86_64

On a test system of mine with version 6.8:
# /sbin/mkdumprd -d -f "/boot/initrd-2.6.32-642.13.1.el6.x86_64kdump.img"
2.6.32-642.13.1.el6.x86_64
Warning: There might not be enough space to save a vmcore.
         The size of UUID=359ce627-f3b1-49a3-a9b9-f607435a40d9 should be
greater than 132250104 kilo bytes.
#

# ll /boot/initrd-2.6.32-642.13.1.el6.x86_64kdump.img
-rw------- 1 root root 7515358 Mar 28 09:52
/boot/initrd-2.6.32-642.13.1.el6.x86_64kdump.img
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