On 07/19/2012 03:41 PM, Wen Congyang wrote:
At 07/19/2012 03:29 PM, Sheldon Wrote:
thank you.
can you tell me what's the difference between memsave and
dump-guest-memory without -p option?
IIRC, memsave only contains memory. The core generated by
dump-guest-memory contains registers' value, and you can use
crash to deal with it.
and what's the difference between *kernel coredump *and
dump-guest-memory with -p option?
kernel coredump? Do you mean kdump?
They are almost the same. The core generated by dump-guest-memory
contains some registers' value which is not included in the core
generated by kdump.
The kdump runs in the guest, while dump-guest-memory runs in
the host. If you forget to start kdump, you can use dump-guest-memory
to get the core.
got it.
So if I want to get kdump, I can use dump-guest-memory command.
And if I want to get a process coredump on guest OS , I should login the
guest OS, and get the process coredump file.
Thanks
Wen Congyang
On 07/19/2012 01:42 PM, Wen Congyang wrote:
At 07/19/2012 12:47 AM, Sheldon Wrote:
I want to dump all guest's memory to file ./guestcore
I execute this command as follow:
(qemu) dump-guest-memory -p protocol file:./guestcore
invalid char in expression
Please try this command:
dump-guest-memory -p file:./guestcore
Thanks
Wen Congyang
