On Fri, Aug 10, 2012 at 4:45 PM, Eric Blake <ebl...@redhat.com> wrote:
> On 08/10/2012 05:31 PM, Harish Patil wrote: > > Hi > > I have both host and KVM/QEMU guest VM running linux. > > > > Questions: > > What are the constituents of the virsh dump? > > - What all areas does it dumps? > > By default, it dumps in the same format needed to migrate a VM from one > host to another. As of 0.9.13 and new enough qemu (basically, a feature > in qemu.git but not released until the upcoming qemu 1.2), you can also > use 'virsh dump --memory-only' to force a dump to an ELF image instead. > > > - Is it same as taking guest VM's core dump via kexec/kdump? > > If you use the --memory-only option, then it is very similar (although > the dump is performed without guest involvement). If you want an actual > kexec/kdump from the guest, then you'll have to have the guest create > that; it may be worth requesting a qemu-ga guest agent command to > trigger a guest to dump itself. > [Harish] How can we achieve this and whom do we request for qemu-ga cmd ? How does it work? Thanks much for your answers. > > > - Does it include QEMU's info to debug qemu-level issues? > > No, it is not a core dump of the qemu process itself. > > -- > Eric Blake ebl...@redhat.com +1-919-301-3266 > Libvirt virtualization library http://libvirt.org > >
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