tag 990464 + moreinfo thanks On Tue, Jun 29, 2021 at 06:25:48PM -0500, Kody Barks wrote: > Package: kdump-tools > Version: 1:1.6.5-1 > > When the kernel panics, it loads the kdump kernel correctly but this kernel > is unable to use NVME, making it unable to mount the root filesystem and > thus making the kdump kernel panic. > I am unable to generate a proper log of this error. The best I could do is > to take a picture of my screen when this happens. This is the attached > file. > I have tried using the boot parameter: "nvme_core.default_ps_max_latency_us=0" > but this made no changes in behavior. > I am using Debian 10 Buster with Linux 5.10.40 with libc6 2.28-10 > My motherboard is the ASUS PRIME x399-a . > The SSD I'm trying to use as the root filesystem is the Intel Corporation > Optane SSD 900P Series [8086:2700]. > It should be noted that outside of kdump, during normal operation, the > device works flawlessly. Only Kdump's kernel has an issue.
hey Kody, It's likely that your crashkernel= parameter just doesn't provide enough memory for the crashkernel to initialize all of your devices. This is set in /etc/default/grub.d/kdump-tools.cfg. Try bumping that up to see if it fixes things. Note that after changing it you'll need to 1) sudo update-grub and 2) reboot before it will take effect for the next crash dump. It's unfortunately not possible to provide a static default crashkernel= that works for everyone, so tuning it is often required. -dann
