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qm: pve machine version: add section to explain +pveX versions

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and clarify what windows guests will be pinned to.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Reviewed-by: Stoiko Ivanov <s.ivanov@proxmox.com>
Tested-By: Stoiko Ivanov <s.ivanov@proxmox.com>
Link: https://lore.proxmox.com/20250404125345.3244659-10-d.csapak@proxmox.com
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Dominik Csapak 2025-04-04 14:53:45 +02:00 committed by Thomas Lamprecht
parent 72c9efe062
commit 78b8af75be
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@ -173,6 +173,21 @@ This means that after a fresh start, the newest machine version supported by the
QEMU binary is used (e.g. the newest machine version QEMU 8.1 supports is
version 8.1 for each machine type).
PVE Machine Version
+++++++++++++++++++
Sometimes it's necessary to introduce new defaults or change the existing
hardware layout for new guests. For this, we have introduces an additional 'pve
machine version'. This version begins with 0 with every new QEMU machine
version, for example 'pc-q35-9.2+pve0'. When we want to change the hardware
layout or a default option, we bump it to the next one (e.g.
'pc-q35-9.2+pve1'), so older running guests are not impacted. When pinning a
guest to a specific machine, this can be omitted. In that case it defaults to
0.
Windows guests get pinned to the most current version that is available for the
specific machine version during guest creation.
QEMU Machine Version Deprecation
++++++++++++++++++++++++++++++++