1 package PVE
::HA
::Sim
::Hardware
;
3 # Simulate Hardware resources
5 # power supply for nodes: on/off
6 # network connection to nodes: on/off
7 # watchdog devices for nodes
12 use Fcntl
qw(:DEFAULT :flock);
14 use File
::Path
qw(make_path remove_tree);
17 use POSIX
qw(strftime EINTR);
19 use PVE
::HA
::FenceConfig
;
22 my $watchdog_timeout = 60;
24 # Status directory layout
28 # $testdir/cmdlist Command list for simulation
29 # $testdir/hardware_status Hardware description (number of nodes, ...)
30 # $testdir/manager_status CRM status (start with {})
31 # $testdir/service_config Service configuration
32 # $testdir/static_service_stats Static service usage information (cpu, memory)
33 # $testdir/groups HA groups configuration
34 # $testdir/service_status_<node> Service status
35 # $testdir/datacenter.cfg Datacenter wide HA configuration
38 # runtime status for simulation system
40 # $testdir/status/cluster_locks Cluster locks
41 # $testdir/status/hardware_status Hardware status (power/network on/off)
42 # $testdir/status/static_service_stats Static service usage information (cpu, memory)
43 # $testdir/status/watchdog_status Watchdog status
47 # $testdir/status/lrm_status_<node> LRM status
48 # $testdir/status/manager_status CRM status
49 # $testdir/status/crm_commands CRM command queue
50 # $testdir/status/service_config Service configuration
51 # $testdir/status/service_status_<node> Service status
52 # $testdir/status/groups HA groups configuration
55 my ($self, $node) = @_;
57 my $filename = "$self->{statusdir}/lrm_status_$node";
59 return PVE
::HA
::Tools
::read_json_from_file
($filename, {});
62 sub write_lrm_status
{
63 my ($self, $node, $status_obj) = @_;
65 my $filename = "$self->{statusdir}/lrm_status_$node";
67 PVE
::HA
::Tools
::write_json_to_file
($filename, $status_obj);
70 sub read_hardware_status_nolock
{
73 my $filename = "$self->{statusdir}/hardware_status";
75 my $raw = PVE
::Tools
::file_get_contents
($filename);
76 my $cstatus = decode_json
($raw);
81 sub write_hardware_status_nolock
{
82 my ($self, $cstatus) = @_;
84 my $filename = "$self->{statusdir}/hardware_status";
86 PVE
::Tools
::file_set_contents
($filename, encode_json
($cstatus));
89 sub read_service_config
{
92 my $filename = "$self->{statusdir}/service_config";
93 my $conf = PVE
::HA
::Tools
::read_json_from_file
($filename);
95 foreach my $sid (keys %$conf) {
96 my $d = $conf->{$sid};
98 die "service '$sid' without assigned node!" if !$d->{node
};
100 if ($sid =~ m/^(vm|ct|fa):(\d+)$/) {
106 $d->{state} = 'disabled' if !$d->{state};
107 $d->{state} = 'started' if $d->{state} eq 'enabled'; # backward compatibility
108 $d->{max_restart
} = 1 if !defined($d->{max_restart
});
109 $d->{max_relocate
} = 1 if !defined($d->{max_relocate
});
115 sub update_service_config
{
116 my ($self, $sid, $param) = @_;
118 my $conf = $self->read_service_config();
120 my $sconf = $conf->{$sid} || die "no such resource '$sid'\n";
122 foreach my $k (%$param) {
123 $sconf->{$k} = $param->{$k};
126 $self->write_service_config($conf);
129 sub write_service_config
{
130 my ($self, $conf) = @_;
132 $self->{service_config
} = $conf;
134 my $filename = "$self->{statusdir}/service_config";
135 return PVE
::HA
::Tools
::write_json_to_file
($filename, $conf);
138 sub read_fence_config
{
143 my $filename = "$self->{statusdir}/fence.cfg";
145 $raw = PVE
::Tools
::file_get_contents
($filename);
148 return PVE
::HA
::FenceConfig
::parse_config
($filename, $raw);
151 sub exec_fence_agent
{
152 my ($self, $agent, $node, @param) = @_;
154 # let all agent succeed and behave the same for now
155 $self->sim_hardware_cmd("power $node off", $agent);
157 return 0; # EXIT_SUCCESS
160 sub set_service_state
{
161 my ($self, $sid, $state) = @_;
163 my $conf = $self->read_service_config();
164 die "no such service '$sid'" if !$conf->{$sid};
166 $conf->{$sid}->{state} = $state;
168 $self->write_service_config($conf);
174 my ($self, $sid, $opts) = @_;
176 my $conf = $self->read_service_config();
177 die "resource ID '$sid' already defined\n" if $conf->{$sid};
179 $conf->{$sid} = $opts;
180 $conf->{$sid}->@{qw(type name)} = split(/:/, $sid);
182 $self->write_service_config($conf);
188 my ($self, $sid) = @_;
190 my $conf = $self->read_service_config();
192 die "no such service '$sid'" if !$conf->{$sid};
194 delete $conf->{$sid};
196 $self->write_service_config($conf);
201 sub change_service_location
{
202 my ($self, $sid, $current_node, $new_node) = @_;
204 my $conf = $self->read_service_config();
206 die "no such service '$sid'\n" if !$conf->{$sid};
208 die "current_node for '$sid' does not match ($current_node != $conf->{$sid}->{node})\n"
209 if $current_node ne $conf->{$sid}->{node
};
211 $conf->{$sid}->{node
} = $new_node;
213 $self->write_service_config($conf);
216 sub service_has_lock
{
217 my ($self, $sid) = @_;
219 my $conf = $self->read_service_config();
221 die "no such service '$sid'\n" if !$conf->{$sid};
223 return $conf->{$sid}->{lock};
227 my ($self, $sid, $lock) = @_;
229 my $conf = $self->read_service_config();
231 die "no such service '$sid'\n" if !$conf->{$sid};
233 $conf->{$sid}->{lock} = $lock || 'backup';
235 $self->write_service_config($conf);
241 my ($self, $sid, $lock) = @_;
243 my $conf = $self->read_service_config();
245 die "no such service '$sid'\n" if !$conf->{$sid};
247 if (!defined($conf->{$sid}->{lock})) {
251 if (defined($lock) && $conf->{$sid}->{lock} ne $lock) {
252 warn "found lock '$conf->{$sid}->{lock}' trying to remove '$lock' lock\n";
256 my $removed_lock = delete $conf->{$sid}->{lock};
258 $self->write_service_config($conf);
260 return $removed_lock;
263 sub queue_crm_commands_nolock
{
264 my ($self, $cmd) = @_;
269 my $filename = "$self->{statusdir}/crm_commands";
271 $data = PVE
::Tools
::file_get_contents
($filename);
274 PVE
::Tools
::file_set_contents
($filename, $data);
279 sub queue_crm_commands
{
280 my ($self, $cmd) = @_;
282 my $code = sub { $self->queue_crm_commands_nolock($cmd); };
284 $self->global_lock($code);
289 sub read_crm_commands
{
295 my $filename = "$self->{statusdir}/crm_commands";
297 $data = PVE
::Tools
::file_get_contents
($filename);
299 PVE
::Tools
::file_set_contents
($filename, '');
304 return $self->global_lock($code);
307 sub read_group_config
{
310 my $filename = "$self->{statusdir}/groups";
312 $raw = PVE
::Tools
::file_get_contents
($filename) if -f
$filename;
314 return PVE
::HA
::Groups-
>parse_config($filename, $raw);
317 sub read_service_status
{
318 my ($self, $node) = @_;
320 my $filename = "$self->{statusdir}/service_status_$node";
321 return PVE
::HA
::Tools
::read_json_from_file
($filename);
324 sub write_service_status
{
325 my ($self, $node, $data) = @_;
327 my $filename = "$self->{statusdir}/service_status_$node";
328 my $res = PVE
::HA
::Tools
::write_json_to_file
($filename, $data);
330 # fixme: add test if a service runs on two nodes!!!
335 sub read_static_service_stats
{
338 my $filename = "$self->{statusdir}/static_service_stats";
339 my $stats = eval { PVE
::HA
::Tools
::read_json_from_file
($filename) };
340 $self->log('error', "loading static service stats failed - $@") if $@;
345 my $default_group_config = <<__EOD;
360 my ($this, $testdir) = @_;
362 die "missing testdir" if !$testdir;
364 die "testdir '$testdir' does not exist or is not a directory!\n"
367 my $class = ref($this) || $this;
369 my $self = bless {}, $class;
371 my $statusdir = $self->{statusdir
} = "$testdir/status";
373 remove_tree
($statusdir);
376 # copy initial configuartion
377 copy
("$testdir/manager_status", "$statusdir/manager_status"); # optional
379 if (-f
"$testdir/groups") {
380 copy
("$testdir/groups", "$statusdir/groups");
382 PVE
::Tools
::file_set_contents
("$statusdir/groups", $default_group_config);
385 if (-f
"$testdir/service_config") {
386 copy
("$testdir/service_config", "$statusdir/service_config");
389 'vm:101' => { node
=> 'node1', group
=> 'prefer_node1' },
390 'vm:102' => { node
=> 'node2', group
=> 'prefer_node2' },
391 'vm:103' => { node
=> 'node3', group
=> 'prefer_node3' },
392 'vm:104' => { node
=> 'node1', group
=> 'prefer_node1' },
393 'vm:105' => { node
=> 'node2', group
=> 'prefer_node2' },
394 'vm:106' => { node
=> 'node3', group
=> 'prefer_node3' },
396 $self->write_service_config($conf);
399 if (-f
"$testdir/hardware_status") {
400 copy
("$testdir/hardware_status", "$statusdir/hardware_status") ||
401 die "Copy failed: $!\n";
404 node1
=> { power
=> 'off', network
=> 'off' },
405 node2
=> { power
=> 'off', network
=> 'off' },
406 node3
=> { power
=> 'off', network
=> 'off' },
408 $self->write_hardware_status_nolock($cstatus);
411 if (-f
"$testdir/fence.cfg") {
412 copy
("$testdir/fence.cfg", "$statusdir/fence.cfg");
415 if (-f
"$testdir/datacenter.cfg") {
416 copy
("$testdir/datacenter.cfg", "$statusdir/datacenter.cfg");
419 if (-f
"$testdir/static_service_stats") {
420 copy
("$testdir/static_service_stats", "$statusdir/static_service_stats");
423 my $cstatus = $self->read_hardware_status_nolock();
425 foreach my $node (sort keys %$cstatus) {
426 $self->{nodes
}->{$node} = {};
428 if (-f
"$testdir/service_status_$node") {
429 copy
("$testdir/service_status_$node", "$statusdir/service_status_$node");
431 $self->write_service_status($node, {});
435 $self->{service_config
} = $self->read_service_config();
443 die "implement in subclass";
447 my ($self, $level, $msg, $id) = @_;
451 my $time = $self->get_time();
453 $id = 'hardware' if !$id;
455 printf("%-5s %5d %12s: $msg\n", $level, $time, $id);
459 my ($self, $node) = @_;
461 return $self->{statusdir
};
464 sub read_datacenter_conf
{
465 my ($self, $node) = @_;
467 my $filename = "$self->{statusdir}/datacenter.cfg";
468 return PVE
::HA
::Tools
::read_json_from_file
($filename, {});
472 my ($self, $code, @param) = @_;
474 my $lockfile = "$self->{statusdir}/hardware.lck";
475 my $fh = IO
::File-
>new(">>$lockfile") ||
476 die "unable to open '$lockfile'\n";
480 $success = flock($fh, LOCK_EX
);
481 if ($success || ($! != EINTR
)) {
486 die "can't acquire lock '$lockfile' - $!\n";
492 eval { $res = &$code($fh, @param) };
502 my $compute_node_info = sub {
503 my ($self, $cstatus) = @_;
508 my $online_count = 0;
510 foreach my $node (keys %$cstatus) {
511 my $d = $cstatus->{$node};
513 my $online = ($d->{power
} eq 'on' && $d->{network
} eq 'on') ?
1 : 0;
514 $node_info->{$node}->{online
} = $online;
517 $online_count++ if $online;
520 my $quorate = ($online_count > int($node_count/2)) ?
1 : 0;
523 foreach my $node (keys %$cstatus) {
524 my $d = $cstatus->{$node};
525 $node_info->{$node}->{online
} = 0;
529 return ($node_info, $quorate);
535 my $cstatus = $self->read_hardware_status_nolock();
536 my ($node_info, $quorate) = &$compute_node_info($self, $cstatus);
538 return ($node_info, $quorate);
541 # helper for Sim/ only
543 my ($self, $node, $state) = @_;
545 # TODO: ensure nolock is OK when adding this to RTSim
546 my $cstatus = $self->read_hardware_status_nolock();
547 my $res = $cstatus->{$node}->{cfs
}->{$state};
549 # we assume default true if not defined
550 return !defined($res) || $res;
553 # simulate hardware commands, the following commands are available:
554 # power <node> <on|off>
555 # network <node> <on|off>
557 # skip-round <crm|lrm> [<rounds=1>]
558 # cfs <node> <rw|update> <work|fail>
562 # service <sid> <started|disabled|stopped|ignored>
563 # service <sid> <migrate|relocate> <target>
564 # service <sid> stop <timeout>
565 # service <sid> lock/unlock [lockname]
566 # service <sid> <add|delete>
567 sub sim_hardware_cmd
{
568 my ($self, $cmdstr, $logid) = @_;
573 my $cstatus = $self->read_hardware_status_nolock();
575 my ($cmd, $objid, $action, @params) = split(/\s+/, $cmdstr);
576 my $param = $params[0]; # for convenience/legacy
578 die "sim_hardware_cmd: no node or service for command specified"
581 my ($node, $sid, $d);
583 if ($cmd eq 'service') {
584 $sid = PVE
::HA
::Tools
::pve_verify_ha_resource_id
($objid);
587 $d = $self->{nodes
}->{$node} ||
588 die "sim_hardware_cmd: no such node '$node'\n";
591 $self->log('info', "execute $cmdstr", $logid);
593 if ($cmd eq 'power') {
594 die "sim_hardware_cmd: unknown action '$action'\n"
595 if $action !~ m/^(on|off)$/;
597 if ($cstatus->{$node}->{power
} ne $action) {
598 if ($action eq 'on') {
600 $d->{crm
} = $self->crm_control('start', $d, $lock_fh) if !defined($d->{crm
});
601 $d->{lrm
} = $self->lrm_control('start', $d, $lock_fh) if !defined($d->{lrm
});
602 $d->{lrm_restart
} = undef;
603 $cstatus->{$node}->{cfs
} = {};
608 $d->{crm_env
}->log('info', "killed by poweroff");
609 $self->crm_control('stop', $d, $lock_fh);
613 $d->{lrm_env
}->log('info', "killed by poweroff");
614 $self->lrm_control('stop', $d, $lock_fh);
616 $d->{lrm_restart
} = undef;
619 $self->watchdog_reset_nolock($node);
620 $self->write_service_status($node, {});
624 $cstatus->{$node}->{power
} = $action;
625 $cstatus->{$node}->{network
} = $action;
626 $cstatus->{$node}->{shutdown} = undef;
628 $self->write_hardware_status_nolock($cstatus);
630 } elsif ($cmd eq 'network') {
631 die "sim_hardware_cmd: unknown network action '$action'"
632 if $action !~ m/^(on|off)$/;
633 $cstatus->{$node}->{network
} = $action;
635 $self->write_hardware_status_nolock($cstatus);
637 } elsif ($cmd eq 'cfs') {
638 die "sim_hardware_cmd: unknown cfs action '$action' for node '$node'"
639 if $action !~ m/^(rw|update)$/;
640 die "sim_hardware_cmd: unknown cfs command '$param' for '$action' on node '$node'"
641 if $param !~ m/^(work|fail)$/;
643 $cstatus->{$node}->{cfs
}->{$action} = $param eq 'work';
644 $self->write_hardware_status_nolock($cstatus);
646 } elsif ($cmd eq 'reboot' || $cmd eq 'shutdown') {
647 $cstatus->{$node}->{shutdown} = $cmd;
649 $self->write_hardware_status_nolock($cstatus);
651 $self->lrm_control('shutdown', $d, $lock_fh) if defined($d->{lrm
});
652 } elsif ($cmd eq 'restart-lrm') {
654 $d->{lrm_restart
} = 1;
655 $self->lrm_control('shutdown', $d, $lock_fh);
657 } elsif ($cmd eq 'crm') {
659 if ($action eq 'stop') {
662 $self->crm_control('shutdown', $d, $lock_fh);
664 } elsif ($action eq 'start') {
665 $d->{crm
} = $self->crm_control('start', $d, $lock_fh) if !defined($d->{crm
});
666 } elsif ($action eq 'enable-node-maintenance' || $action eq 'disable-node-maintenance') {
667 $self->queue_crm_commands_nolock("$action $node");
669 die "sim_hardware_cmd: unknown action '$action'";
672 } elsif ($cmd eq 'service') {
673 if ($action eq 'started' || $action eq 'disabled' ||
674 $action eq 'stopped' || $action eq 'ignored') {
676 $self->set_service_state($sid, $action);
678 } elsif ($action eq 'migrate' || $action eq 'relocate') {
680 die "sim_hardware_cmd: missing target node for '$action' command"
683 $self->queue_crm_commands_nolock("$action $sid $param");
685 } elsif ($action eq 'stop') {
687 die "sim_hardware_cmd: missing timeout for '$action' command"
690 $self->queue_crm_commands_nolock("$action $sid $param");
692 } elsif ($action eq 'add') {
694 $self->add_service($sid, {state => $params[1] || 'started', node
=> $param});
696 } elsif ($action eq 'delete') {
698 $self->delete_service($sid);
700 } elsif ($action eq 'lock') {
702 $self->lock_service($sid, $param);
704 } elsif ($action eq 'unlock') {
706 $self->unlock_service($sid, $param);
709 die "sim_hardware_cmd: unknown service action '$action' " .
710 "- not implemented\n"
713 die "sim_hardware_cmd: unknown command '$cmdstr'\n";
719 return $self->global_lock($code);
722 # for controlling the resource manager services
724 my ($self, $action, $data, $lock_fh) = @_;
726 die "implement in subclass";
730 my ($self, $action, $data, $lock_fh) = @_;
732 die "implement in subclass";
738 die "implement in subclass";
741 my $modify_watchog = sub {
742 my ($self, $code) = @_;
744 my $update_cmd = sub {
746 my $filename = "$self->{statusdir}/watchdog_status";
748 my ($res, $wdstatus);
751 my $raw = PVE
::Tools
::file_get_contents
($filename);
752 $wdstatus = decode_json
($raw);
757 ($wdstatus, $res) = &$code($wdstatus);
759 PVE
::Tools
::file_set_contents
($filename, encode_json
($wdstatus));
764 return $self->global_lock($update_cmd);
767 sub watchdog_reset_nolock
{
768 my ($self, $node) = @_;
770 my $filename = "$self->{statusdir}/watchdog_status";
773 my $raw = PVE
::Tools
::file_get_contents
($filename);
774 my $wdstatus = decode_json
($raw);
776 foreach my $id (keys %$wdstatus) {
777 delete $wdstatus->{$id} if $wdstatus->{$id}->{node
} eq $node;
780 PVE
::Tools
::file_set_contents
($filename, encode_json
($wdstatus));
785 my ($self, $node) = @_;
792 foreach my $wfh (keys %$wdstatus) {
793 my $wd = $wdstatus->{$wfh};
794 next if $wd->{node
} ne $node;
796 my $ctime = $self->get_time();
797 my $tdiff = $ctime - $wd->{update_time
};
799 if ($tdiff > $watchdog_timeout) { # expired
801 delete $wdstatus->{$wfh};
805 return ($wdstatus, $res);
808 return &$modify_watchog($self, $code);
814 my ($self, $node) = @_;
821 my $id = "WD:$node:$$:$wdcounter";
823 die "internal error" if defined($wdstatus->{$id});
827 update_time
=> $self->get_time(),
830 return ($wdstatus, $id);
833 return &$modify_watchog($self, $code);
837 my ($self, $wfh) = @_;
842 my $wd = $wdstatus->{$wfh};
843 die "no such watchdog handle '$wfh'\n" if !defined($wd);
845 my $tdiff = $self->get_time() - $wd->{update_time
};
846 die "watchdog expired" if $tdiff > $watchdog_timeout;
848 delete $wdstatus->{$wfh};
853 return &$modify_watchog($self, $code);
856 sub watchdog_update
{
857 my ($self, $wfh) = @_;
862 my $wd = $wdstatus->{$wfh};
864 die "no such watchdog handle '$wfh'\n" if !defined($wd);
866 my $ctime = $self->get_time();
867 my $tdiff = $ctime - $wd->{update_time
};
869 die "watchdog expired" if $tdiff > $watchdog_timeout;
871 $wd->{update_time
} = $ctime;
876 return &$modify_watchog($self, $code);
879 sub get_static_node_stats
{
882 my $cstatus = $self->read_hardware_status_nolock();
885 for my $node (keys $cstatus->%*) {
886 $stats->{$node} = { $cstatus->{$node}->%{qw(cpus memory)} };