ah profitbricks uses def. igor's patches ;-)
Look at those:
Mit freundlichen Grüßen
Stefan Priebe
Bachelor of Science in Computer Science (BSCS)
Vorstand (CTO)
-------------------------------
Profihost AG
Am Mittelfelde 29
30519 Hannover
Deutschland
Tel.: +49 (511) 5151 8181 | Fax.: +49 (511) 5151 8282
URL: http://www.profihost.com | E-Mail: [email protected]
Sitz der Gesellschaft: Hannover, USt-IdNr. DE813460827
Registergericht: Amtsgericht Hannover, Register-Nr.: HRB 202350
Vorstand: Cristoph Bluhm, Sebastian Bluhm, Stefan Priebe
Aufsichtsrat: Prof. Dr. iur. Winfried Huck (Vorsitzender)
Am 17.02.2014 06:07, schrieb Alexandre DERUMIER:
Yeah found that. But this means that the vm allocates the value of max until
the balloon guest driver is loaded. So if I set it to 128gb for each guest they
can't boot together as each vm tries to use 128gb.
Are you sure of that ? Because, As Far I known (for linux guest), the memory is
not allocated/filled at boot, and ballonning occur when the driver is loaded
very fast at boot.
(For windows guest it's different, because it's zero filling the memory at boot)
----- Mail original -----
De: "Stefan Priebe - Profihost AG" <[email protected]>
À: "Alexandre DERUMIER" <[email protected]>
Cc: [email protected]
Envoyé: Dimanche 16 Février 2014 10:28:27
Objet: Re: [pve-devel] CPU and Memory hot add
Am 16.02.2014 um 10:05 schrieb Alexandre DERUMIER <[email protected]>:
ok so you addd maxcpus: 128 to each configto have it silently enabled?
Yes ;)
Just be carefull to set only 1 socket, as hotplug is core by core
(I have also send pve-manager patches in the mailing, but dietmar don't have
apply them yet
Which ones? Can't find them.
How? set in config balooning to min and max to 4096 and then changing it
to 8192 for min max does not change anything in the guest.
Set max to maximum "hotpluggable" memory
set min to current guest memory
set shares = 0 (that disable auto ballonning from pvestatd)
Then play with min memory up/down
Yeah found that. But this means that the vm allocates the value of max until
the balloon guest driver is loaded. So if I set it to 128gb for each guest they
can't boot together as each vm tries to use 128gb.
Greets,
Stefan
----- Mail original -----
De: "Stefan Priebe" <[email protected]>
À: "Alexandre DERUMIER" <[email protected]>
Cc: [email protected]
Envoyé: Samedi 15 Février 2014 17:09:39
Objet: Re: [pve-devel] CPU and Memory hot add
Am 15.02.2014 13:59, schrieb Alexandre DERUMIER:
cpu hot add is already implemented. (even in proxmox ;)
https://git.proxmox.com/?p=qemu-server.git;a=commit;h=838776ab650f0593b48c234070c1a189fdbd72c7
cpu hot del is not yet implemented. (but they are some prelimary patches in the
qemu mailing list)
ok so you addd maxcpus: 128 to each configto have it silently enabled?
memory hotplug is not yet implemented. (should be ok for next qemu 2.0 release
I think)
But maybe they are cheating, like I do : just use ballonning with a fixed size ?
How? set in config balooning to min and max to 4096 and then changing it
to 8192 for min max does not change anything in the guest.
Stefan
----- Mail original -----
De: "Stefan Priebe" <[email protected]>
À: [email protected]
Envoyé: Vendredi 14 Février 2014 21:18:47
Objet: [pve-devel] CPU and Memory hot add
Hi,
while browsing the web, i found profitbricks, which is active in germany
and the us (http://www.profitbricks.com/technical-info).
They use KVM and offer memory and cpu hot add on the fly? Anybody an
idea how this works if kvm does not already support it?
Greets,
Stefan
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