Explain why shut down VMs appear as running when backed up

Signed-off-by: Emmanuel Kasper <e.kasper@proxmox.com>

diff --git a/vzdump.adoc b/vzdump.adoc
index babf40727671a9fee0ffd78cf140aa2b29120078..da8ea19dd0bf91aa5b063895f5d11985d906377b 100644 (file)
--- a/vzdump.adoc
+++ b/vzdump.adoc
@@ -89,7 +89,10 @@ https://git.proxmox.com/?p=pve-qemu.git;a=blob_plain;f=backup.txt[here].
 
 NOTE: Proxmox VE live backup provides snapshot-like semantics on any
 storage type. It does not require that the underlying storage supports
-snapshots.
+snapshots. Also please note that since the backups are done via 
+a background Qemu process, a stopped VM will appear as running for a 
+short amount of time while the VM disks are being read by Qemu.
+However the VM itself is not booted, only its disk(s) are read.
 
 .Backup modes for Containers: