[pve-devel] applied: [PATCH v2 qemu-server] Fix #2728: die/warn if target is not a replication target when live-migrating

[Fabian Grünbichler]

with T-B included.

since this is pre-config-lock and outside the flocked section, it might 
make sense to repeat the check in QemuMigrate? then again, 
creating/deleting replication jobs only locks the replication config and 
not the VM config, so without changes there it won't be race-free 
either.

On May 18, 2020 9:37 am, Fabian Ebner wrote:
> Signed-off-by: Fabian Ebner <f.ebner at proxmox.com>
> ---
> 
> Changes from v1:
>     * die/warn depending on force (thanks to Thomas and Aaron for the suggestion)
>     * don't die/warn if VM is not replicated at all
> 
>  PVE/API2/Qemu.pm | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
> index fd51bf3..cb99f78 100644
> --- a/PVE/API2/Qemu.pm
> +++ b/PVE/API2/Qemu.pm
> @@ -3486,6 +3486,19 @@ __PACKAGE__->register_method({
>  
>  	if (PVE::QemuServer::check_running($vmid)) {
>  	    die "can't migrate running VM without --online\n" if !$param->{online};
> +
> +	    my $repl_conf = PVE::ReplicationConfig->new();
> +	    my $is_replicated = $repl_conf->check_for_existing_jobs($vmid, 1);
> +	    my $is_replicated_to_target = defined($repl_conf->find_local_replication_job($vmid, $target));
> +	    if ($is_replicated && !$is_replicated_to_target) {
> +		if ($param->{force}) {
> +		    warn "WARNING: Node '$target' is not a replication target. Existing replication " .
> +		         "jobs will fail after migration!\n";
> +		} else {
> +		    die "Cannot live-migrate replicated VM to node '$target' - not a replication target." .
> +		        " Use 'force' to override.\n";
> +		}
> +	    }
>  	} else {
>  	    warn "VM isn't running. Doing offline migration instead.\n" if $param->{online};
>  	    $param->{online} = 0;
> -- 
> 2.20.1
> 
> 
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