[libvirt] [PATCH] manual: Add virsh manual about specified migration host

the 'migration_host' description maybe have a bit of difficulty to understand for user, so add this manual for them. Signed-off-by: Chen Fan <chen.fan.fnst(a)cn.fujitsu.com&gt; --- tools/virsh.pod | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/virsh.pod b/tools/virsh.pod index de9a4f7..8d77a2f 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -1238,6 +1238,11 @@ seen from the source machine. When I<migrateuri> is not specified, libvirt will automatically determine the hypervisor specific URI, by looking up the target host's configured hostname. +In particular, some hypervisors support having this migration hostname specified +separately by setting 'migration_host' in definition file, if 'migration_host' +is specified, the hostname or IP address will be used to as the default I<migrateuri> +while running migration from source host. if 'migration_host' is not specified, +the migration hostname is set to the host's configured hostname by default. There are a few scenarios where specifying I<migrateuri> may help: =over 4 @@ -1251,7 +1256,9 @@ explicitly specified, using an IP address, or a correct hostname. interfaces, it might be desirable for the migration data stream to be sent over a specific interface for either security or performance reasons. In this case I<migrateuri> should be explicitly specified, using an IP address associated -with the network to be used. +with the network to be used. In particular, Some hypervisors could be easy to +specify the default network interface by setting 'migration_host'. then the +I<migrateuri> can be omitted. =item * The firewall restricts what ports are available. When libvirt generates a migration URI, it will pick a port number using hypervisor specific rules. -- 1.9.3