[pve-devel] [PATCH v3 qemu-server 1/7] api2 : add migrate_vm_external

[David Limbeck]

On 11/27/18 4:38 PM, Alexandre Derumier wrote:
> qm migrate_external <vmid> <targetremotenode> [--targetstorage otherstorage] [--targetbridge otherbridge]
> ---
>   PVE/API2/Qemu.pm | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>   PVE/CLI/qm.pm    |  2 ++
>   2 files changed, 81 insertions(+)
>
> diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
> index c82e2fa..b23db56 100644
> --- a/PVE/API2/Qemu.pm
> +++ b/PVE/API2/Qemu.pm
> @@ -3162,6 +3162,85 @@ __PACKAGE__->register_method({
>       }});
>   
>   __PACKAGE__->register_method({
> +    name => 'migrate_vm_external',
> +    path => '{vmid}/migrate_external',
> +    method => 'POST',
> +    protected => 1,
> +    proxyto => 'node',
> +    description => "Migrate virtual machine to an external cluster. Creates a new migration task.",
> +    permissions => {
> +	check => ['perm', '/vms/{vmid}', [ 'VM.Migrate' ]],
> +    },
> +    parameters => {
> +    	additionalProperties => 0,
> +	properties => {
> +	    node => get_standard_option('pve-node'),
> +	    vmid => get_standard_option('pve-vmid', { completion => \&PVE::QemuServer::complete_vmid }),
> +	    target => get_standard_option('pve-node', {
> +		description => "Target node.",
> +            }),
> +            targetstorage => get_standard_option('pve-storage-id', {
> +		description => "Target remote storage.",
> +		optional => 1,
> +            }),
> +	    targetbridge => {
> +		type => 'string',
> +		description => "Target remote bridge.",
> +		format_description => 'bridge',
> +		optional => 1,
> +	    },

optional targetvmid with the current fallback of /cluster/nextid if not 
specified would be a great addition.

an override for the private key name might be nice to have as well, e.g. 
--targetkey 'external.cluster2' which uses 
/etc/pve/priv/migrate_external/external.cluster2 with the fallback to 
the current /etc/pve/priv/migrate_external/id_rsa_external.cluster2

What do you think?

> +	},
> +    },
> +    returns => {
> +	type => 'string',
> +	description => "the task ID.",
> +    },
> +    code => sub {
> +	my ($param) = @_;
> +
> +	my $rpcenv = PVE::RPCEnvironment::get();
> +
> +	my $authuser = $rpcenv->get_user();
> +
> +	die "Only root can do external migration." if $authuser ne 'root at pam';
> +
> +	my $target = extract_param($param, 'target');
> +
> +	my $vmid = extract_param($param, 'vmid');
> +
> +	PVE::Cluster::check_cfs_quorum();
> +
> +	raise_param_exc({ target => "target is member of local cluster."}) if PVE::Cluster::check_node_exists($target, 1);
> +
> +        die "HA must be disable for external migration." if PVE::HA::Config::vm_is_ha_managed($vmid);
> +
> +	my $targetip = PVE::Network::get_ip_from_hostname($target, 1);
> +
> +	# test if VM exists
> +	my $conf = PVE::QemuConfig->load_config($vmid);
> +
> +	# try to detect errors early
> +
> +	PVE::QemuConfig->check_lock($conf);
> +
> +	die "VM need to be online for external migration" if !PVE::QemuServer::check_running($vmid);
> +
> +	$param->{online} = 1;
> +	$param->{migration_external} = 1;
> +
> +	my $realcmd = sub {
> +	    PVE::QemuMigrate->migrate($target, $targetip, $vmid, $param);
> +	};
> +
> +	my $worker = sub {
> +	    return PVE::GuestHelpers::guest_migration_lock($vmid, 10, $realcmd);
> +	};
> +
> +	return $rpcenv->fork_worker('qmigrate', $vmid, $authuser, $worker);
> +
> +    }});
> +
> +__PACKAGE__->register_method({
>       name => 'monitor',
>       path => '{vmid}/monitor',
>       method => 'POST',
> diff --git a/PVE/CLI/qm.pm b/PVE/CLI/qm.pm
> index eceb9b3..5aa1d48 100755
> --- a/PVE/CLI/qm.pm
> +++ b/PVE/CLI/qm.pm
> @@ -850,6 +850,8 @@ our $cmddef = {
>   
>       migrate => [ "PVE::API2::Qemu", 'migrate_vm', ['vmid', 'target'], { node => $nodename }, $upid_exit ],
>   
> +    migrate_external => [ "PVE::API2::Qemu", 'migrate_vm_external', ['vmid', 'target'], { node => $nodename }, $upid_exit ],
> +
>       set => [ "PVE::API2::Qemu", 'update_vm', ['vmid'], { node => $nodename } ],
>   
>       resize => [ "PVE::API2::Qemu", 'resize_vm', ['vmid', 'disk', 'size'], { node => $nodename } ],