----- Original Message ----- > On 04/26, Dave Anderson wrote: > > > > > No, just a regular file, qemu creates it and does mmap(MAP_SHARED) on it. > > > > > > > that constantly contains the > > > > current contents of the guest's physical memory? > > > > > > Yes, > > > > > > > Is it like /dev/mem? > > > > > > yes, but more like /dev/crash. > > > > > > Oleg. > > > > Unfortunately I am completely unfamiliar with qemu option specifications. > > I too do not know much about qemu options, > > > So if I were to log into the guest machine, does a /tmp/MEM file exist? > > No, > > > Or does it exist on the host machine? > > Yes, it is just the normal file on the host which runs qemu. > > Well, "normal" is not neccessarily true in that you can use, for example, > > mem-path=/path/to/hugetlb-mount/... > > but this doesn't matter. It is still the "regular" file mmaped by qemu, the > host can read it to acess the guest's physical memory. > > Oleg. OK, so we're running on a host machine that has one of these memory files that is accessible as a regular file. So what's the remote access needed for -- just to query for the particulars of the layout of the memory file? Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
