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crashkernel; was: /gnu/store/ corruption on crash
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From: |
Danny Milosavljevic |
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Subject: |
crashkernel; was: /gnu/store/ corruption on crash |
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Date: |
Mon, 22 Feb 2016 22:46:11 +0100 |
On Mon, 22 Feb 2016 22:11:25 +0100
Danny Milosavljevic <address@hidden> wrote:
> I've got a problem on an X200 where, after I did standby 3 times, it will
> wake up fine but at the first larger disk access hang the machine.
Also, is kdump crashkernel supported in GuixSD?
The minimal support would be:
pass kernel command line option "crashkernel", for example crashkernel=256M.
This reserves a region of memory not to be touched by anyone but the crash
analyzer (especially not by DMA).
Better support would be (see linux/Documentation/kdump/ ):
Enable CONFIG_DEBUG_INFO in the kernel config. The remaining are all already
active in GuixSD.
For x86_64, after booting, run
kexec -p kernelimagefile --initrd=... --append="root=... 1 irqpoll
maxcpus=1 reset_devices"