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From d52ae79470eb8725b63a6470e393149b48f508da Mon Sep 17 00:00:00 2001
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Message-Id: <d52ae79470eb8725b63a6470e393149b48f508da@dist-git>
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From: Jiri Denemark <jdenemar@redhat.com>
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Date: Fri, 8 Dec 2017 10:31:38 +0100
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Subject: [PATCH] migration.html: Clarify configuration file handling docs
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Migration never removes any configuration files on the destination host.
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Thus when the domain is already defined on the destination, it will stay
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persistent even after migration without --persist.
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https://bugzilla.redhat.com/show_bug.cgi?id=1514930
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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(cherry picked from commit 2c01e4febcd161226ce707892d8e53f4e66f708f)
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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docs/migration.html.in | 34 +++++++++++++++++-----------------
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1 file changed, 17 insertions(+), 17 deletions(-)
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diff --git a/docs/migration.html.in b/docs/migration.html.in
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index de7d4def75..7c345b65b7 100644
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--- a/docs/migration.html.in
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+++ b/docs/migration.html.in
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@@ -206,14 +206,14 @@
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- There are two types of virtual machine known to libvirt. A transient
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+ There are two types of virtual machines known to libvirt. A transient
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guest only exists while it is running, and has no configuration file stored
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on disk. A persistent guest maintains a configuration file on disk
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even when it is not running.
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- By default, a migration operation will not attempt to change any configuration
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+ By default, a migration operation will not attempt to modify any configuration
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files that may be stored on either the source or destination host. It is the
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administrator, or management application's, responsibility to manage distribution
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of configuration files (if desired). It is important to note that the /etc/libvirt
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@@ -230,14 +230,14 @@
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host and removed on the original.
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Centralized configuration files outside libvirt, in a database. A data center
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- management application may not storage configuration files at all. Instead it
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+ management application may not store configuration files at all. Instead it
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may generate libvirt XML on the fly when a guest is booted. It will typically
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use transient guests, and thus not have to consider configuration files during
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migration.
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Distributed configuration inside libvirt. The configuration file for each
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guest is copied to every host where the guest is able to run. Upon migration
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- the existing config merely needs to be updated with any changes
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+ the existing config merely needs to be updated with any changes.
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Ad-hoc configuration management inside libvirt. Each guest is tied to a
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specific host and rarely migrated. When migration is required, the config
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@@ -246,7 +246,7 @@
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- As mentioned above, libvirt will not touch configuration files during
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+ As mentioned above, libvirt will not modify configuration files during
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migration by default. The virsh command has two flags to
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influence this behaviour. The --undefine-source flag
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will cause the configuration file to be removed on the source host
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@@ -265,12 +265,12 @@
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After migration
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- Guest type
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+ Source type
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Source config
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Dest config
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--undefine-source
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--persist
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- Guest type
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+ Dest type
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Source config
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Dest config
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@@ -325,9 +325,9 @@
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Y
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N
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N
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- Transient
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- N
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+ Persistent
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N
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+ Y
(unchanged dest config)
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Transient
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@@ -335,9 +335,9 @@
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Y
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Y
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N
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- Transient
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- N
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+ Persistent
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N
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+ Y
(unchanged dest config)
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Transient
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@@ -347,7 +347,7 @@
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Y
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Persistent
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N
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- Y
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+ Y
(replaced with source)
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Transient
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@@ -357,7 +357,7 @@
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Y
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Persistent
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N
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- Y
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+ Y
(replaced with source)
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@@ -411,7 +411,7 @@
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N
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Persistent
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Y
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- Y
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+ Y
(unchanged dest config)
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Persistent
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@@ -421,7 +421,7 @@
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N
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Persistent
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N
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- Y
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+ Y
(unchanged dest config)
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Persistent
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@@ -431,7 +431,7 @@
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Y
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Persistent
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Y
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- Y
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+ Y
(replaced with source)
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Persistent
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@@ -441,7 +441,7 @@
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Y
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Persistent
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N
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- Y
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+ Y
(replaced with source)
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--
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2.15.1
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