Not really. Each domU has it's own storage space - which can either
be a file or an LVM volume. In the instance that I described, we
"fooled" the domU by actually using LVM snapshots (let me know if
you're not familiar with the concept) thereby only physically having
one copy of the binaries. Anything that was written to those domU's
was written into the snapshot space.The domU's would each have their own swap, written to whatever
> How about swap? Dom0 of course has its swap -- and could/should be RAIDed,
> but what about GuestOS' swap? I honestly haven't gotten that far yet ....
diskspace the domU occupies.
Yes, I'm familiar with LVM. But not well-versed at all in its application in a virtualized
scenario.
Given the RAID-1 goal of failover & backup, and a performance goal of not bunncessarily bogging down I/O, at the moment, I'm confused by "how many copies of each object" (binay, data, swap for Dom0 and each DomU) exist in the scenario you've proposed.
I suspect much of this will be come clearer once I actually start "doing" (Hardware arriving in pieces over the next week ...).
In the meantime, I need to skectch this out on paper and stare at it for awhile -- and hope for an "aha!" moment.
Do you, perchance, have a good reference to a write-up of deploying your proposed scenario?
Regards,
Bob
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