According to: https://access.redhat.com/solutions/916043
It may be worth a try to see if memory can be reserved when using the following kernel argument: crashkernel=768M@0M Any updates on this from your side? Regards, Vincent On Fri, 6 Jan 2017, lejeczek wrote: > > like I said "..Different kernels, official and third-parties, still fails..." > Same Centos on a VM (as a guest on the box where kdump fails) starts kdump > fine. > > smells like the hardware. Dell tech, are you there guys? > > > On 06/01/17 17:00, [email protected] wrote: >> >> Oh and btw, is there any reason that you're running 4.9.0 and not the usual >> 3.10.0 kernel on el7/centos? That might explain some of the breakage.. >> >> Vincent >> >> On Fri, 6 Jan 2017, lejeczek wrote: >> >>> it does not start at all >>> >>> lrwxrwxrwx 1 root root 11 Jan 6 12:45 var/lock -> >>> ../run/lock >>> lrwxrwxrwx 1 root root 6 Jan 6 12:45 var/run -> ../run >>> ======================================================================== >>> *** Creating initramfs image file >>> '/boot/initramfs-4.9.0-1.el7.elrepo.x86_64kdump.img' done *** >>> No memory reserved for crash kernel. >>> Starting kdump: [FAILED] >>> kdump.service: main process exited, code=exited, status=1/FAILURE >>> >>> Centos 7.x >>> I've tried various args to crashkernel= but no help from it. Different >>> kernels, official and third-parties, still fails. >>> BIOS?? Some advise on Intel switch off IOMMU, which I did although it's >>> AMD. >>> >>> >>> On 06/01/17 14:57, [email protected] wrote: >>>> What's your OS and what are the relevant parts of your kdump.conf? >>>> when you mention it does work. is it that it doesn't kdump at all, panics >>>> upon entering the kdump kernel or some other thing? >>>> >>>> Vincent >>>> >>>> On Fri, 6 Jan 2017, lejeczek wrote: >>>> >>>>> hi all >>>>> >>>>> mine does not, I have a few R815 none is good, and I've >>>>> tampered with it in many ways, cannot get it to work. >>>>> With IOMMU disabled still no good.... gee. >>>>> >>>>> best, >>>>> L. >>>>> >>>>> _______________________________________________ >>>>> Linux-PowerEdge mailing list >>>>> [email protected] >>>>> https://lists.us.dell.com/mailman/listinfo/linux-poweredge >>>>> >>>> _______________________________________________ >>>> Linux-PowerEdge mailing list >>>> [email protected] >>>> https://lists.us.dell.com/mailman/listinfo/linux-poweredge >>> >>> > > _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge
