BRRABill's Field Report With XenServer
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@Danp said
Just remember that migration from XS6 to XS7 is a one way operation.
Why would one ever want to go back?
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@BRRABill You wouldn't downgrade from XS7 to XS6. However, with one XS6 server and one XS7 server, I could seem someone wanting to migrate a VM between servers and not be able to if the VM resides on XS7.
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Indeed, you can't live migrate a VM from a recent version of XS to an older one.
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@olivier said in BRRABill's Field Report With XenServer:
Indeed, you can't live migrate a VM from a recent version of XS to an older one.
But you can go the other way, thank goodness!
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@BRRABill said in BRRABill's Field Report With XenServer:
@olivier said in BRRABill's Field Report With XenServer:
Indeed, you can't live migrate a VM from a recent version of XS to an older one.
But you can go the other way, thank goodness!
Would really suck if you couldn't. Nice that updating isn't too bad. -
@scottalanmiller said
Would really suck if you couldn't. Nice that updating isn't too bad.I was certainly happy to have XS installed on USB.
I wonder what it would be like if XS is on the same disk/array as the SR.
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Has anyone ever done an upgrade to the same version?
By that, I mean, installed, say XS7 over an existing XS7 install?
I am thinking of doing that to test my "clone to a bigger USB" theory.
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Another question, this one more for general knowledge.
If I were to clone the current boot USB, and then try this upgrade and it bombs, can I just go back to the cloned original setup?
This is the kind of stuff that I don't think you can do, but then @scottalanmiller says ... "you are thinking windows ... Linux is just .... EASY"
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@BRRABill said in BRRABill's Field Report With XenServer:
Another question, this one more for general knowledge.
If I were to clone the current boot USB, and then try this upgrade and it bombs, can I just go back to the cloned original setup?
This is the kind of stuff that I don't think you can do, but then @scottalanmiller says ... "you are thinking windows ... Linux is just .... EASY"
Yes you can do that. As the Boot USB is what is running the hardware, the hardware doesn't store any of the boot info.
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@DustinB3403 said
Yes you can do that. As the Boot USB is what is running the hardware, the hardware doesn't store any of the boot info.
And none of the VM info/data is altered with an upgrade?
So, in theory you could try going to 7 from 6.5, it could bomb, and you could just go back to your 6.5 USB?
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@BRRABill said in BRRABill's Field Report With XenServer:
@DustinB3403 said
Yes you can do that. As the Boot USB is what is running the hardware, the hardware doesn't store any of the boot info.
And none of the VM info/data is altered with an upgrade?
So, in theory you could try going to 7 from 6.5, it could bomb, and you could just go back to your 6.5 USB?
That's the theory.
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Of course, testing in a LAB would be ideal.
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@DustinB3403 said
Of course, testing in a LAB would be ideal.
What, no one has ever tested this?
Once I get all the production stuff up I will give it a shot.
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Testing is for losers.
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@scottalanmiller said in BRRABill's Field Report With XenServer:
Testing is for losers.
Or for people who prefer to not play with production.
But YOLO!
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@olivier said
Indeed, you can't live migrate a VM from a recent version of XS to an older one.
What about move and copy? Can you do that to a stopped VM?
What about export? Could i export the VM from XS7 and import it to XS6.5?
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@BRRABill said in BRRABill's Field Report With XenServer:
@olivier said
Indeed, you can't live migrate a VM from a recent version of XS to an older one.
What about move and copy? Can you do that to a stopped VM?
What about export? Could i export the VM from XS7 and import it to XS6.5?
I don't believe you can move a VM backwards to an older version of XS7.
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@BRRABill You should be able to export / import from XS7 to an older version. Not sure about moving a stopped VM.
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@DustinB3403 said
I don't believe you can move a VM backwards to an older version of XS7.
I admit I am still unclear (as are a lot, I think) as to how much the VMs get touched in various operations.
For example, my question yesterday about a botched upgrade. If you can theoretically go back to 6.5 from a botched 7 upgrade, it can't be touching the VMs, right?
