Linked by Thom Holwerda on Mon 30th Nov 2009 23:45 UTC
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RE[3]: Let's separate VM teleportationa and Data teleportation
by phoenix on Thu 3rd Dec 2009 17:39
in reply to "RE[2]: Let's separate VM teleportationa and Data teleportation"
"You store the actual VM image on shared storage (NFS, CIFS, iSCSI, etc). It's only the in-use memory that is transported from one host to the other.
And what if I need to change/migrate the area in that such VM image is stored ? Is there a way to move it having the VM running ? - this is my understanding of "VM transportation", not only the instance, but the image too. "
Then you use storage clustering and multipathing.
Would you really want to try and migrate a 10 GB OS+apps VM image? Even if you trimmed it down to the bare essentials, it would still be more than just moving the used RAM around.
RE[4]: Let's separate VM teleportationa and Data teleportation
by namakemono on Fri 4th Dec 2009 01:01
in reply to "RE[3]: Let's separate VM teleportationa and Data teleportation"
Would you really want to try and migrate a 10 GB OS+apps VM image? Even if you trimmed it down to the bare essentials, it would still be more than just moving the used RAM around.
Actually, not. I do prefer to have an outage of a couple of hours and make a clean migration.
My question was to understand the process itself. You did me a good solution. Thanks.




Member since:
2009-07-01
And what if I need to change/migrate the area in that such VM image is stored ? Is there a way to move it having the VM running ? - this is my understanding of "VM transportation", not only the instance, but the image too.
Well, I was thinking in something that changes the presentation itself - like when a web page knows if you are using a browser in a desktop or in a mobile device. Doing a VNC/RDesktop of a desktop sized screen in the mobile device will be a scrolling challenge.
Rgds,