> -----Original Messages-----
> From: "Benjamin Hauger" <hauger@xxxxxxxx>
> Sent Time: 2019-03-28 01:31:40 (Thursday)
> To: wuzhouhui <wuzhouhui14@xxxxxxxxxxxxxxxx>, centos@xxxxxxxxxx
> Cc:
> Subject: Re: How to specify kernel version when restart kdump
>
> What do you mean? Wouldn't the kernel version always be the actual
> running version of the kernel that was booted?
>
Suppose the running kernel is 2.6.32, and then I installed kernel 3.10.0.
The files under /boot includes (exclude some unimportant files):
initramfs-2.6.32.img
initramfs-3.10.0.img
vmlinuz-2.6.32
vmlinuz-3.10.0
initrd-2.6.32kdump.img
We can see that there is no initrd-3.10.0kdump.img for newly installed
kernel 3.10.0, and kdump will generate initrd-3.10.0kdump.img only when
booted as kernel 3.10.0. However, I want kdump to generate initrd-3.10.0kdump.img
now (the current running kernel is 2.6.32).
> Ben
>
> On 3/26/19 6:16 PM, wuzhouhui wrote:
> >> -----Original Messages-----
> >> From: "Benjamin Hauger" <hauger@xxxxxxxx>
> >> Sent Time: 2019-03-27 00:15:21 (Wednesday)
> >> To: centos@xxxxxxxxxx
> >> Cc:
> >> Subject: Re: How to specify kernel version when restart kdump
> >>
> >> kdump operates by booting a fresh kernel to capture the context of a
> >> crashed kernel, and so the only way for kdump to dump a kernel is to
> >> crash it and cause kdump to invoke its post-crash kernel.
> >>
> >> You can manually force a running kernel to panic (and invoke a
> >> correctly-configured kdump) with the following command sequence:
> >>
> >>> echo 1 > /proc/sys/kernel/sysrq
> >>> echo c > /proc/sysrq-trigger
> >>
> >> Cheers,
> >> Ben
> > Hi, Ben
> >
> > I think your response doesn't answered my question. I'm not asking
> > how to trigger kernel crash and see whether the kdump is works, but
> > asking how to specifying kernel version when start kdump service.
> >
> > Thanks.
> >>
> >>
> >> On 3/25/19 7:19 PM, wuzhouhui wrote:
> >> CentOS@xxxxxxxxxx
> >> https://lists.centos.org/mailman/listinfo/centos
> > _______________________________________________
> > CentOS mailing list
> > CentOS@xxxxxxxxxx
> > https://lists.centos.org/mailman/listinfo/centos
> >
>
> --
>
> Benjamin Hauger
> SysAdmin/CSDC-DMO
> Rm. 94
> x8371
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