man/vzmigrate.8

.TH vzmigrate 8 "12 Sep 2006" "OpenVZ" "Virtual Environments"

.SH NAME
vzmigrate - utility for virtual environment migration between hardware nodes.

.SH SYNOPSIS
.TP
\fBvzmigrate\fR [\fB-r\fR|\fB--remove-area\fR \fByes\fR|\fBno\fR] [\fB--ssh=\fIssh_options\fR] \
[\fB--keep-dst\fR] [\fB--online\fR] [\fB-v\fR] \fIdestination_address\fR \fIveid\fR

.SH DESCRIPTION
This utility is used to migrate a VE from one (source) Hardware Node (HN)
to another (destination) HN. The utility can migrate either stopped or running
VE. For a stopped VE, simple VE private area transfer is performed
(\fBrsync\fR(1) is used for file transfer). For running VEs,
migration may be offline (default) or online.

This program uses ssh as a transport layer. You will need to put ssh
public key to destination node and be able to connect to node without
entering password.

.SH OPTIONS
.TP
\fB-r\fR, \fB--remove-area\fR \fByes\fR|\fBno\fR
Whether to remove a VE area on source HN for the successfully migrated VE.

.TP
\fB--ssh=\fIoptions\fR
Additional \fIoptions\fR that will be passed to ssh while establishing
connection to destination HN. You may add options like \fB-c blowfish\fR
or the like.

.TP
.B --keep-dst
Do not clean synced destination VE private area in case of some
error. It makes sense to use this option on big VE migration to avoid
syncing VE private area again in case some error (on VE stop for
example) occurs during first migration attempt.
 
.TP
.B --online
Perform online (zero-downtime) migration: during the migration the VE
hangs for a while and after the migration it continues working as though nothing has
happened.

.TP
.B -v
Verbose mode. Causes \fBvzmigrate\fP to print debugging messages about its progress.

.SH EXAMPLES
Migration of VE #101 to \fI192.168.1.130\fR with downtime:
.br
\f(CR	vzmigrate 192.168.1.130 101
\fR
.br

Online migration of VE#102 to \fI192.168.1.130\fR:
.br
\f(CR	vzmigrate --online 192.168.1.130 102
\fR

.SH EXIT STATUS
.TP
.B 0 EXIT_OK
Command completed successfully.
.TP
.B 1 EXIT_USAGE
Bad command line options.
.TP
.B 2 EXIT_VE_STOPPED
VE is stopped.
.TP
.B 4 EXIT_CONNECT
Can't connect to destination (source) HN.
.TP
.B 6 EXIT_COPY
VE private area copying/moving failed.
.TP
.B 7 EXIT_VE_START
Can't start or restore destination VE.
.TP
.B 8 EXIT_VE_STOP
Can't stop or checkpoint source VE.
.TP
.B 9 EXIT_EXISTS
VE already exists on destination HN.
.TP
.B 10 EXIT_NOTEXIST
VE does not exists on source HN.
.TP
.B 12 EXIT_IP_INUSE
You attempt to migrate VE which IP address(es) are already in use
on the destination node. 
.TP
.B 13 EXIT_QUOTA
Operation with VE quota failed.


.SH SEE ALSO
.BR rsync (1)

.SH COPYRIGHT
Copyright (C) 2001-2007, SWsoft. Licensed under GNU GPL.