[pve-ha-manager.git] / src / PVE / HA / LRM.pm

package PVE::HA::LRM;

# Local Resource Manager

use strict;
use warnings;
use Data::Dumper;
use POSIX qw(:sys_wait_h);

use PVE::SafeSyslog;
use PVE::Tools;
use PVE::HA::Tools;

# Server can have several states:

my $valid_states = {
    wait_for_agent_lock => "waiting for agent lock",
    active => "got agent_lock",
    lost_agent_lock => "lost agent_lock",
};

sub new {
    my ($this, $haenv) = @_;

    my $class = ref($this) || $this;

    my $self = bless {
	haenv => $haenv,
	status => { state => 'startup' },
	workers => {},
	results => {},
	shutdown_request => 0,
    }, $class;

    $self->set_local_status({ state => 	'wait_for_agent_lock' });   
    
    return $self;
}

sub shutdown_request {
    my ($self) = @_;

    $self->{shutdown_request} = 1;
}

sub get_local_status {
    my ($self) = @_;

    return $self->{status};
}

sub set_local_status {
    my ($self, $new) = @_;

    die "invalid state '$new->{state}'" if !$valid_states->{$new->{state}};

    my $haenv = $self->{haenv};

    my $old = $self->{status};

    # important: only update if if really changed 
    return if $old->{state} eq $new->{state};

    $haenv->log('info', "status change $old->{state} => $new->{state}");

    $new->{state_change_time} = $haenv->get_time();

    $self->{status} = $new;
}

sub get_protected_ha_agent_lock {
    my ($self) = @_;

    my $haenv = $self->{haenv};

    my $count = 0;
    my $starttime = $haenv->get_time();

    for (;;) {
	
	if ($haenv->get_ha_agent_lock()) {
	    if ($self->{ha_agent_wd}) {
		$haenv->watchdog_update($self->{ha_agent_wd});
	    } else {
		my $wfh = $haenv->watchdog_open();
		$self->{ha_agent_wd} = $wfh;
	    }
	    return 1;
	}
	    
	last if ++$count > 5; # try max 5 time

	my $delay = $haenv->get_time() - $starttime;
	last if $delay > 5; # for max 5 seconds

	$haenv->sleep(1);
    }
    
    return 0;
}

sub fenced_service_count {
    my ($self) = @_;
    
    my $haenv = $self->{haenv};

    my $nodename = $haenv->nodename();

    my $ss = $self->{service_status};

    my $count = 0;
    
    foreach my $sid (keys %$ss) {
	my $sd = $ss->{$sid};
	next if !$sd->{node};
	next if $sd->{node} ne $nodename;
	my $req_state = $sd->{state};
	next if !defined($req_state);
	if ($req_state eq 'fence') {
	    $count++;
	    next;
	}
    }
    
    return $count;
}

sub active_service_count {
    my ($self) = @_;
    
    my $haenv = $self->{haenv};

    my $nodename = $haenv->nodename();

    my $ss = $self->{service_status};

    my $count = 0;
    
    foreach my $sid (keys %$ss) {
	my $sd = $ss->{$sid};
	next if !$sd->{node};
	next if $sd->{node} ne $nodename;
	my $req_state = $sd->{state};
	next if !defined($req_state);
	next if $req_state eq 'stopped';

	$count++;
    }
    
    return $count;
}
    
sub do_one_iteration {
    my ($self) = @_;

    my $haenv = $self->{haenv};

    my $status = $self->get_local_status();
    my $state = $status->{state};

    my $ms = $haenv->read_manager_status();
    $self->{service_status} =  $ms->{service_status} || {};

    my $fence_request = $self->fenced_service_count();
    
    # do state changes first 

    my $ctime = $haenv->get_time();

    if ($state eq 'wait_for_agent_lock') {

	my $service_count = $self->active_service_count();

	if (!$fence_request && $service_count && $haenv->quorate()) {
	    if ($self->get_protected_ha_agent_lock()) {
		$self->set_local_status({ state => 'active' });
	    }
	}
	
    } elsif ($state eq 'lost_agent_lock') {

	if (!$fence_request && $haenv->quorate()) {
	    if ($self->get_protected_ha_agent_lock()) {
		$self->set_local_status({ state => 'active' });
	    }
	}

    } elsif ($state eq 'active') {

	if ($fence_request) {		
	    $haenv->log('err', "node need to be fenced - releasing agent_lock\n");
	    $self->set_local_status({ state => 'lost_agent_lock'});	
	} elsif (!$self->get_protected_ha_agent_lock()) {
	    $self->set_local_status({ state => 'lost_agent_lock'});
	}
    }

    $status = $self->get_local_status();
    $state = $status->{state};

    # do work

    if ($state eq 'wait_for_agent_lock') {

	return 0 if $self->{shutdown_request};

	$haenv->sleep(5);
	   
    } elsif ($state eq 'active') {

	my $startime = $haenv->get_time();

	my $max_time = 10;

	my $shutdown = 0;

	# do work (max_time seconds)
	eval {
	    # fixme: set alert timer

	    if ($self->{shutdown_request}) {

		# fixme: request service stop or relocate ?

		my $service_count = $self->active_service_count();

		if ($service_count == 0) {

		    if ($self->{ha_agent_wd}) {
			$haenv->watchdog_close($self->{ha_agent_wd});
			delete $self->{ha_agent_wd};
		    }

		    $shutdown = 1;
		}
	    } else {

		$self->manage_resources();

	    }
	};
	if (my $err = $@) {
	    $haenv->log('err', "got unexpected error - $err");
	}

	return 0 if $shutdown;

	$haenv->sleep_until($startime + $max_time);

    } elsif ($state eq 'lost_agent_lock') {
	
	# Note: watchdog is active an will triger soon!

	# so we hope to get the lock back soon!

	if ($self->{shutdown_request}) {

	    my $service_count = $self->active_service_count();

	    if ($service_count > 0) {
		$haenv->log('err', "get shutdown request in state 'lost_agent_lock' - " . 
			    "detected $service_count running services");

	    } else {

		# all services are stopped, so we can close the watchdog

		if ($self->{ha_agent_wd}) {
		    $haenv->watchdog_close($self->{ha_agent_wd});
		    delete $self->{ha_agent_wd};
		}
		
		return 0;
	    }
	}

	$haenv->sleep(5);

    } else {

	die "got unexpected status '$state'\n";

    }

    return 1;
}

sub manage_resources {
    my ($self) = @_;

    my $haenv = $self->{haenv};

    my $nodename = $haenv->nodename();

    my $ss = $self->{service_status};

    foreach my $sid (keys %$ss) {
	my $sd = $ss->{$sid};
	next if !$sd->{node};
	next if !$sd->{uid};
	next if $sd->{node} ne $nodename;
	my $req_state = $sd->{state};
	next if !defined($req_state);
	eval {
	    $self->queue_resource_command($sid, $sd->{uid}, $req_state, $sd->{target});
	};
	if (my $err = $@) {
	    $haenv->log('err', "unable to run resource agent for '$sid' - $err"); # fixme
	}
    }

    my $starttime = $haenv->get_time();

    # start workers
    my $max_workers = 4;

    my $sc = $haenv->read_service_config();

    while (($haenv->get_time() - $starttime) < 5) {
	my $count =  $self->check_active_workers();

	foreach my $sid (keys %{$self->{workers}}) {
	    last if $count >= $max_workers;
	    my $w = $self->{workers}->{$sid};
	    my $cd = $sc->{$sid};
	    if (!$cd) {
		$haenv->log('err', "missing resource configuration for '$sid'");
		next;
	    }
	    if (!$w->{pid}) {
		if ($haenv->can_fork()) {
		    my $pid = fork();
		    if (!defined($pid)) {
			$haenv->log('err', "fork worker failed");
			$count = 0; last; # abort, try later
		    } elsif ($pid == 0) {
			# do work
			my $res = -1;
			eval {
			    $res = $haenv->exec_resource_agent($sid, $cd, $w->{state}, $w->{target});
			};
			if (my $err = $@) {
			    $haenv->log('err', $err);
			    POSIX::_exit(-1);
			}  
			POSIX::_exit($res); 
		    } else {
			$count++;
			$w->{pid} = $pid;
		    }
		} else {
		    my $res = -1;
		    eval {
			$res = $haenv->exec_resource_agent($sid, $cd, $w->{state}, $w->{target});
		    };
		    if (my $err = $@) {
			$haenv->log('err', $err);
		    }		    
		    $self->resource_command_finished($sid, $w->{uid}, $res);
		}
	    }
	}

	last if !$count;

	$haenv->sleep(1);
    }
}

# fixme: use a queue an limit number of parallel workers?
sub queue_resource_command {
    my ($self, $sid, $uid, $state, $target) = @_;

    if (my $w = $self->{workers}->{$sid}) {
	return if $w->{pid}; # already started
	# else, delete and overwrite queue entry with new command
	delete $self->{workers}->{$sid};
    }

    $self->{workers}->{$sid} = {
	sid => $sid,
	uid => $uid,
	state => $state,
    };

    $self->{workers}->{$sid}->{target} = $target if $target;
}

sub check_active_workers {
    my ($self) = @_;

    # finish/count workers
    my $count = 0;
    foreach my $sid (keys %{$self->{workers}}) {
	my $w = $self->{workers}->{$sid};
	if (my $pid = $w->{pid}) {
	    # check status
	    my $waitpid = waitpid($pid, WNOHANG);
	    if (defined($waitpid) && ($waitpid == $pid)) {
		$self->resource_command_finished($sid, $w->{uid}, $?);
	    } else {
		$count++;
	    }
	}
    }
    
    return $count;
}

sub resource_command_finished {
    my ($self, $sid, $uid, $status) = @_;

    my $haenv = $self->{haenv};

    my $w = delete $self->{workers}->{$sid};
    return if !$w; # should not happen

    my $exit_code = -1;

    if ($status == -1) {
	$haenv->log('err', "resource agent $sid finished - failed to execute");    
    }  elsif (my $sig = ($status & 127)) {
	$haenv->log('err', "resource agent $sid finished - got signal $sig");
    } else {
	$exit_code = ($status >> 8);
    }

    $self->{results}->{$uid} = {
	sid => $w->{sid},
	state => $w->{state},
	exit_code => $exit_code,
    };

    my $ss = $self->{service_status};

    # compute hash of valid/existing uids
    my $valid_uids = {};
    foreach my $sid (keys %$ss) {
	my $sd = $ss->{$sid};
	next if !$sd->{uid};
	$valid_uids->{$sd->{uid}} = 1;
    }

    my $results = {};
    foreach my $id (keys %{$self->{results}}) {
	next if !$valid_uids->{$id};
	$results->{$id} = $self->{results}->{$id};
    }
    $self->{results} = $results;

    $haenv->write_lrm_status($results);
}

1;
Commit	Line	Data
5f095798 DM	1	package PVE::HA::LRM;
	2
	3	# Local Resource Manager
	4
	5	use strict;
	6	use warnings;
c4a221bc DM	7	use Data::Dumper;
c4a221bc DM	8	use POSIX qw(:sys_wait_h);
5f095798 DM	9
	10	use PVE::SafeSyslog;
	11	use PVE::Tools;
	12	use PVE::HA::Tools;
	13
	14	# Server can have several states:
	15
	16	my $valid_states = {
ec911edd	17	wait_for_agent_lock => "waiting for agent lock",
0bba8f60	18	active => "got agent_lock",
5f095798 DM	19	lost_agent_lock => "lost agent_lock",
	20	};
	21
	22	sub new {
	23	my ($this, $haenv) = @_;
	24
	25	my $class = ref($this) \|\| $this;
	26
	27	my $self = bless {
	28	haenv => $haenv,
	29	status => { state => 'startup' },
c4a221bc DM	30	workers => {},
c4a221bc DM	31	results => {},
067cdf33	32	shutdown_request => 0,
5f095798 DM	33	}, $class;
5f095798 DM	34
b0bf08a9	35	$self->set_local_status({ state => 'wait_for_agent_lock' });
5f095798 DM	36
	37	return $self;
	38	}
	39
	40	sub shutdown_request {
	41	my ($self) = @_;
	42
	43	$self->{shutdown_request} = 1;
	44	}
	45
	46	sub get_local_status {
	47	my ($self) = @_;
	48
	49	return $self->{status};
	50	}
	51
	52	sub set_local_status {
	53	my ($self, $new) = @_;
	54
	55	die "invalid state '$new->{state}'" if !$valid_states->{$new->{state}};
	56
	57	my $haenv = $self->{haenv};
	58
	59	my $old = $self->{status};
	60
	61	# important: only update if if really changed
	62	return if $old->{state} eq $new->{state};
	63
0bba8f60	64	$haenv->log('info', "status change $old->{state} => $new->{state}");
5f095798 DM	65
	66	$new->{state_change_time} = $haenv->get_time();
	67
	68	$self->{status} = $new;
	69	}
	70
	71	sub get_protected_ha_agent_lock {
	72	my ($self) = @_;
	73
	74	my $haenv = $self->{haenv};
	75
	76	my $count = 0;
	77	my $starttime = $haenv->get_time();
	78
	79	for (;;) {
	80
	81	if ($haenv->get_ha_agent_lock()) {
	82	if ($self->{ha_agent_wd}) {
	83	$haenv->watchdog_update($self->{ha_agent_wd});
	84	} else {
	85	my $wfh = $haenv->watchdog_open();
	86	$self->{ha_agent_wd} = $wfh;
	87	}
	88	return 1;
	89	}
	90
	91	last if ++$count > 5; # try max 5 time
	92
	93	my $delay = $haenv->get_time() - $starttime;
	94	last if $delay > 5; # for max 5 seconds
	95
	96	$haenv->sleep(1);
	97	}
	98
	99	return 0;
	100	}
	101
067cdf33 DM	102	sub fenced_service_count {
	103	my ($self) = @_;
	104
	105	my $haenv = $self->{haenv};
	106
	107	my $nodename = $haenv->nodename();
	108
	109	my $ss = $self->{service_status};
	110
	111	my $count = 0;
	112
	113	foreach my $sid (keys %$ss) {
	114	my $sd = $ss->{$sid};
	115	next if !$sd->{node};
	116	next if $sd->{node} ne $nodename;
	117	my $req_state = $sd->{state};
	118	next if !defined($req_state);
	119	if ($req_state eq 'fence') {
	120	$count++;
	121	next;
	122	}
	123	}
	124
	125	return $count;
	126	}
546e2f1f DM	127
	128	sub active_service_count {
	129	my ($self) = @_;
	130
	131	my $haenv = $self->{haenv};
	132
	133	my $nodename = $haenv->nodename();
	134
	135	my $ss = $self->{service_status};
	136
	137	my $count = 0;
	138
	139	foreach my $sid (keys %$ss) {
	140	my $sd = $ss->{$sid};
	141	next if !$sd->{node};
	142	next if $sd->{node} ne $nodename;
	143	my $req_state = $sd->{state};
	144	next if !defined($req_state);
	145	next if $req_state eq 'stopped';
	146
	147	$count++;
	148	}
	149
	150	return $count;
	151	}
067cdf33	152
5f095798 DM	153	sub do_one_iteration {
	154	my ($self) = @_;
	155
	156	my $haenv = $self->{haenv};
	157
	158	my $status = $self->get_local_status();
	159	my $state = $status->{state};
	160
067cdf33 DM	161	my $ms = $haenv->read_manager_status();
	162	$self->{service_status} = $ms->{service_status} \|\| {};
	163
	164	my $fence_request = $self->fenced_service_count();
	165
5f095798 DM	166	# do state changes first
	167
	168	my $ctime = $haenv->get_time();
	169
b0bf08a9	170	if ($state eq 'wait_for_agent_lock') {
5f095798	171
546e2f1f	172	my $service_count = $self->active_service_count();
5f095798	173
067cdf33	174	if (!$fence_request && $service_count && $haenv->quorate()) {
0bba8f60 DM	175	if ($self->get_protected_ha_agent_lock()) {
0bba8f60 DM	176	$self->set_local_status({ state => 'active' });
5f095798 DM	177	}
	178	}
	179
	180	} elsif ($state eq 'lost_agent_lock') {
	181
067cdf33	182	if (!$fence_request && $haenv->quorate()) {
0bba8f60 DM	183	if ($self->get_protected_ha_agent_lock()) {
0bba8f60 DM	184	$self->set_local_status({ state => 'active' });
5f095798 DM	185	}
	186	}
	187
0bba8f60	188	} elsif ($state eq 'active') {
5f095798	189
067cdf33 DM	190	if ($fence_request) {
	191	$haenv->log('err', "node need to be fenced - releasing agent_lock\n");
	192	$self->set_local_status({ state => 'lost_agent_lock'});
	193	} elsif (!$self->get_protected_ha_agent_lock()) {
5f095798 DM	194	$self->set_local_status({ state => 'lost_agent_lock'});
	195	}
	196	}
	197
	198	$status = $self->get_local_status();
	199	$state = $status->{state};
	200
	201	# do work
	202
	203	if ($state eq 'wait_for_agent_lock') {
	204
	205	return 0 if $self->{shutdown_request};
	206
	207	$haenv->sleep(5);
	208
0bba8f60	209	} elsif ($state eq 'active') {
5f095798 DM	210
	211	my $startime = $haenv->get_time();
	212
	213	my $max_time = 10;
	214
	215	my $shutdown = 0;
	216
	217	# do work (max_time seconds)
	218	eval {
	219	# fixme: set alert timer
	220
	221	if ($self->{shutdown_request}) {
	222
	223	# fixme: request service stop or relocate ?
	224
546e2f1f	225	my $service_count = $self->active_service_count();
5f095798 DM	226
	227	if ($service_count == 0) {
	228
	229	if ($self->{ha_agent_wd}) {
	230	$haenv->watchdog_close($self->{ha_agent_wd});
	231	delete $self->{ha_agent_wd};
	232	}
	233
	234	$shutdown = 1;
	235	}
c4a221bc	236	} else {
c4a221bc DM	237
c4a221bc DM	238	$self->manage_resources();
067cdf33	239
5f095798 DM	240	}
	241	};
	242	if (my $err = $@) {
	243	$haenv->log('err', "got unexpected error - $err");
	244	}
	245
	246	return 0 if $shutdown;
	247
	248	$haenv->sleep_until($startime + $max_time);
	249
	250	} elsif ($state eq 'lost_agent_lock') {
	251
	252	# Note: watchdog is active an will triger soon!
	253
	254	# so we hope to get the lock back soon!
	255
	256	if ($self->{shutdown_request}) {
	257
546e2f1f	258	my $service_count = $self->active_service_count();
5f095798	259
546e2f1f	260	if ($service_count > 0) {
5f095798	261	$haenv->log('err', "get shutdown request in state 'lost_agent_lock' - " .
546e2f1f	262	"detected $service_count running services");
5f095798	263
546e2f1f	264	} else {
5f095798	265
546e2f1f	266	# all services are stopped, so we can close the watchdog
5f095798	267
546e2f1f DM	268	if ($self->{ha_agent_wd}) {
	269	$haenv->watchdog_close($self->{ha_agent_wd});
	270	delete $self->{ha_agent_wd};
	271	}
	272
	273	return 0;
5f095798	274	}
5f095798 DM	275	}
5f095798 DM	276
b0bf08a9 DM	277	$haenv->sleep(5);
b0bf08a9 DM	278
5f095798 DM	279	} else {
	280
	281	die "got unexpected status '$state'\n";
	282
	283	}
	284
	285	return 1;
	286	}
	287
c4a221bc DM	288	sub manage_resources {
	289	my ($self) = @_;
	290
	291	my $haenv = $self->{haenv};
	292
	293	my $nodename = $haenv->nodename();
	294
c4a221bc DM	295	my $ss = $self->{service_status};
	296
	297	foreach my $sid (keys %$ss) {
	298	my $sd = $ss->{$sid};
	299	next if !$sd->{node};
	300	next if !$sd->{uid};
	301	next if $sd->{node} ne $nodename;
	302	my $req_state = $sd->{state};
	303	next if !defined($req_state);
c4a221bc	304	eval {
e88469ba	305	$self->queue_resource_command($sid, $sd->{uid}, $req_state, $sd->{target});
c4a221bc DM	306	};
c4a221bc DM	307	if (my $err = $@) {
f31b7e94	308	$haenv->log('err', "unable to run resource agent for '$sid' - $err"); # fixme
c4a221bc DM	309	}
	310	}
	311
f31b7e94	312	my $starttime = $haenv->get_time();
c4a221bc DM	313
	314	# start workers
	315	my $max_workers = 4;
	316
6dbf93a0	317	my $sc = $haenv->read_service_config();
f31b7e94 DM	318
f31b7e94 DM	319	while (($haenv->get_time() - $starttime) < 5) {
c4a221bc DM	320	my $count = $self->check_active_workers();
	321
	322	foreach my $sid (keys %{$self->{workers}}) {
	323	last if $count >= $max_workers;
	324	my $w = $self->{workers}->{$sid};
6dbf93a0 DM	325	my $cd = $sc->{$sid};
6dbf93a0 DM	326	if (!$cd) {
f31b7e94	327	$haenv->log('err', "missing resource configuration for '$sid'");
6dbf93a0 DM	328	next;
6dbf93a0 DM	329	}
c4a221bc	330	if (!$w->{pid}) {
f31b7e94 DM	331	if ($haenv->can_fork()) {
	332	my $pid = fork();
	333	if (!defined($pid)) {
	334	$haenv->log('err', "fork worker failed");
	335	$count = 0; last; # abort, try later
	336	} elsif ($pid == 0) {
	337	# do work
	338	my $res = -1;
	339	eval {
	340	$res = $haenv->exec_resource_agent($sid, $cd, $w->{state}, $w->{target});
	341	};
	342	if (my $err = $@) {
	343	$haenv->log('err', $err);
	344	POSIX::_exit(-1);
	345	}
	346	POSIX::_exit($res);
	347	} else {
	348	$count++;
	349	$w->{pid} = $pid;
	350	}
	351	} else {
c4a221bc DM	352	my $res = -1;
c4a221bc DM	353	eval {
6dbf93a0	354	$res = $haenv->exec_resource_agent($sid, $cd, $w->{state}, $w->{target});
c4a221bc DM	355	};
c4a221bc DM	356	if (my $err = $@) {
f31b7e94 DM	357	$haenv->log('err', $err);
	358	}
	359	$self->resource_command_finished($sid, $w->{uid}, $res);
c4a221bc DM	360	}
	361	}
	362	}
	363
	364	last if !$count;
	365
f31b7e94	366	$haenv->sleep(1);
c4a221bc DM	367	}
	368	}
	369
	370	# fixme: use a queue an limit number of parallel workers?
	371	sub queue_resource_command {
e88469ba	372	my ($self, $sid, $uid, $state, $target) = @_;
c4a221bc DM	373
	374	if (my $w = $self->{workers}->{$sid}) {
	375	return if $w->{pid}; # already started
	376	# else, delete and overwrite queue entry with new command
	377	delete $self->{workers}->{$sid};
	378	}
	379
	380	$self->{workers}->{$sid} = {
	381	sid => $sid,
	382	uid => $uid,
	383	state => $state,
	384	};
e88469ba DM	385
e88469ba DM	386	$self->{workers}->{$sid}->{target} = $target if $target;
c4a221bc DM	387	}
	388
	389	sub check_active_workers {
	390	my ($self) = @_;
	391
	392	# finish/count workers
	393	my $count = 0;
	394	foreach my $sid (keys %{$self->{workers}}) {
	395	my $w = $self->{workers}->{$sid};
	396	if (my $pid = $w->{pid}) {
	397	# check status
	398	my $waitpid = waitpid($pid, WNOHANG);
	399	if (defined($waitpid) && ($waitpid == $pid)) {
	400	$self->resource_command_finished($sid, $w->{uid}, $?);
	401	} else {
	402	$count++;
	403	}
	404	}
	405	}
	406
	407	return $count;
	408	}
	409
	410	sub resource_command_finished {
	411	my ($self, $sid, $uid, $status) = @_;
	412
	413	my $haenv = $self->{haenv};
	414
	415	my $w = delete $self->{workers}->{$sid};
	416	return if !$w; # should not happen
	417
	418	my $exit_code = -1;
	419
	420	if ($status == -1) {
0f70400d	421	$haenv->log('err', "resource agent $sid finished - failed to execute");
c4a221bc	422	} elsif (my $sig = ($status & 127)) {
0f70400d	423	$haenv->log('err', "resource agent $sid finished - got signal $sig");
c4a221bc DM	424	} else {
c4a221bc DM	425	$exit_code = ($status >> 8);
c4a221bc DM	426	}
	427
	428	$self->{results}->{$uid} = {
	429	sid => $w->{sid},
	430	state => $w->{state},
	431	exit_code => $exit_code,
	432	};
	433
	434	my $ss = $self->{service_status};
	435
	436	# compute hash of valid/existing uids
	437	my $valid_uids = {};
	438	foreach my $sid (keys %$ss) {
	439	my $sd = $ss->{$sid};
	440	next if !$sd->{uid};
	441	$valid_uids->{$sd->{uid}} = 1;
	442	}
	443
	444	my $results = {};
	445	foreach my $id (keys %{$self->{results}}) {
	446	next if !$valid_uids->{$id};
	447	$results->{$id} = $self->{results}->{$id};
	448	}
	449	$self->{results} = $results;
	450
	451	$haenv->write_lrm_status($results);
	452	}
	453
5f095798	454	1;