From cfd48f55a05104f391ccdf2dcd4627fa2593fb76 Mon Sep 17 00:00:00 2001 From: Thomas Lamprecht Date: Fri, 21 Sep 2018 16:14:30 +0200 Subject: [PATCH] qm: vmgenid: add note for initial addition on existing VMs Signed-off-by: Thomas Lamprecht --- qm.adoc | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/qm.adoc b/qm.adoc index bd10ca1..947c144 100644 --- a/qm.adoc +++ b/qm.adoc @@ -811,6 +811,10 @@ e.g.: qm set VMID -vmgenid 00000000-0000-0000-0000-000000000000 ---- +NOTE: The initial addition of a 'vmgenid' device to an existing VM, may result +in the same effects as a change on snapshot rollback, backup restore, etc., has +as the VM can interpret this as generation change. + In the rare case the 'vmgenid' mechanism is not wanted one can pass `0' for its value on VM creation, or retroactively delete the property in the configuration with: @@ -821,8 +825,9 @@ configuration with: The most prominent use case for 'vmgenid' are newer Microsoft Windows operating systems, which use it to avoid problems in time sensitive or -replicate services (e.g., databases, domain controller) on snapshot -rollback, backup restore or a whole VM clone operation. +replicate services (e.g., databases, domain controller +footnote:[https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/get-started/virtual-dc/virtualized-domain-controller-architecture]) +on snapshot rollback, backup restore or a whole VM clone operation. Importing Virtual Machines and disk images ------------------------------------------ -- 2.39.2