> -----Original Messages----- > From: "Benjamin Hauger" <hauger at noao.edu> > Sent Time: 2019-03-28 01:31:40 (Thursday) > To: wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn>, centos at centos.org > Cc: > Subject: Re: [CentOS] 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 at noao.edu> > >> Sent Time: 2019-03-27 00:15:21 (Wednesday) > >> To: centos at centos.org > >> Cc: > >> Subject: Re: [CentOS] 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 at centos.org > >> https://lists.centos.org/mailman/listinfo/centos > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > https://lists.centos.org/mailman/listinfo/centos > > > > -- > > Benjamin Hauger > SysAdmin/CSDC-DMO > Rm. 94 > x8371