Node.pm.in 23.4 KB
Newer Older
1
#!/usr/bin/perl -wT
2 3
#
# EMULAB-COPYRIGHT
4
# Copyright (c) 2005-2007 University of Utah and the Flux Group.
5 6 7
# All rights reserved.
#
package Node;
8 9 10

use strict;
use Exporter;
11 12
use vars qw(@ISA @EXPORT);

13
@ISA    = "Exporter";
14
@EXPORT = qw();
15 16 17 18

# Must come after package declaration!
use lib '@prefix@/lib';
use libdb;
19
use libtestbed;
20 21 22
require NodeType;
require Interface;
require Experiment;
23
require OSinfo;
24 25 26
use English;
use Data::Dumper;
use overload ('""' => 'Stringify');
27
use vars qw($NODEROLE_TESTNODE @EXPORT_OK);
28

29 30 31 32
# Configure variables
my $TB		= "@prefix@";
my $BOSSNODE    = "@BOSSNODE@";
my $EVENTSYS    = @EVENTSYS@;
33
# XXX stinky hack detection
34
my $ISUTAH	= @TBMAINSITE@;
35

36 37 38 39 40 41 42 43 44 45 46 47 48
# Exported defs
$NODEROLE_TESTNODE	= 'testnode';

# Why, why, why?
@EXPORT_OK = qw($NODEROLE_TESTNODE);

# Defaults
#
# MFS to boot the nodes into initially
my $MFS_INITIAL = TB_OSID_FREEBSD_MFS();
# Initial event system state to put the nodes into
my $STATE_INITIAL = TBDB_NODESTATE_SHUTDOWN;

49 50 51 52 53 54 55 56 57 58 59 60 61
# Cache of instances to avoid regenerating them.
my %nodes	= ();
my $debug	= 0;

# Little helper and debug function.
sub mysystem($)
{
    my ($command) = @_;

    print STDERR "Running '$command'\n"
	if ($debug);
    return system($command);
}
62 63

#
64
# Lookup a (physical) node and create a class instance to return.
65
#
66 67
sub Lookup($$)
{
68 69
    my ($class, $nodeid) = @_;

70 71 72
    # Look in cache first
    return $nodes{$nodeid}
        if (exists($nodes{$nodeid}));
73

74
    return undef
Mike Hibler's avatar
Mike Hibler committed
75
	if (! ($nodeid =~ /^[-\w]+$/));
76

77
    my $query_result =
78 79
	DBQueryWarn("select * from nodes as n ".
		    "where n.node_id='$nodeid'");
80

81 82 83 84 85 86 87 88 89 90
    return undef
	if (!$query_result || !$query_result->numrows);

    my $self            = {};
    $self->{"DBROW"}    = $query_result->fetchrow_hashref();
    $self->{"RSRV"}     = undef;
    $self->{"TYPEINFO"} = undef;
    bless($self, $class);

    # Add to cache.
91 92 93
    $nodes{$nodeid} = $self;
    return $self;
}
94 95 96 97 98 99 100 101
# accessors
sub field($$)  { return ((! ref($_[0])) ? -1 : $_[0]->{'DBROW'}->{$_[1]}); }
sub node_id($)       { return field($_[0], 'node_id'); }
sub type($)          { return field($_[0], 'type'); }
sub eventstate($)    { return field($_[0], 'eventstate'); }
sub jailflag($)      { return field($_[0], 'jailflag'); }
sub phys_nodeid($)   { return field($_[0], 'phys_nodeid'); }
sub def_boot_osid($) { return field($_[0], 'def_boot_osid'); }
102

103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228
#
# Create a new node.
#
sub Create($$$$)
{
    my ($class, $node_id, $experiment, $argref) = @_;
    my ($control_iface,$virtnode_capacity,$adminmfs,$adminmfs_osid);
    my ($priority, $osid, $opmode, $state);

    my $type = $argref->{'type'};
    my $role = $argref->{'role'};

    my $typeinfo = NodeType->Lookup($type);
    return undef
	if (!defined($typeinfo));

    my $isremote = $typeinfo->isremotenode();

    if ($typeinfo->virtnode_capacity(\$virtnode_capacity)) {
	print STDERR "*** No virtnode_capacity for $type! Using zero.\n";
	$virtnode_capacity = 0;
    }
    if ($typeinfo->adminmfs_osid(\$adminmfs_osid)) {
	print STDERR "*** No adminmfs osid for $type!\n";
	return undef;
    }
    # Find object for the adminfs.
    if (defined($adminmfs_osid)) {
	$adminmfs = OSinfo->Lookup($adminmfs_osid);
    }
    else {
	$adminmfs = OSinfo->Lookup(TBOPSPID(), $MFS_INITIAL);
    }
    if (!defined($adminmfs)) {
	print STDERR "*** Could not find OSinfo object for adminmfs!\n";
	return undef;
    }
    $osid   = $adminmfs->osid();
    $opmode = $adminmfs->op_mode();
    $state  = $STATE_INITIAL;
    
    #
    # Make up a priority (just used for sorting)
    #
    if ($node_id =~ /^(.*\D)(\d+)$/) {
	$priority = $2;
    }
    else {
	$priority = 1;
    }
    # The list of table we have to clear if anything goes wrong.
    my @cleantables = ("nodes", "node_hostkeys", "node_status",
		       "node_activity", "node_utilization",
		       "node_auxtypes", "reserved");

    DBQueryWarn("insert into nodes set ".
		"  node_id='$node_id', type='$type', " .
		"  phys_nodeid='$node_id', role='$role', ".
		"  priority=$priority, " .
		"  eventstate='$state', op_mode='$opmode', " .
		"  def_boot_osid='$osid', " .
		"  inception=now(), ".
		"  state_timestamp=unix_timestamp(NOW()), " .
		"  op_mode_timestamp=unix_timestamp(NOW())")
	or goto bad;

    DBQueryWarn("insert into node_hostkeys (node_id) ".
		"values ('$node_id')")
	or goto bad;
	
    DBQueryWarn("insert into node_status ".
		"(node_id, status, status_timestamp) ".
		"values ('$node_id', 'down', now()) ")
	or goto bad;
    
    DBQueryWarn("insert into node_activity ".
		"(node_id) values ('$node_id')")
	or goto bad;
	
    DBQueryWarn("insert into node_utilization ".
		"(node_id) values ('$node_id')")
	or goto bad;

    if (defined($experiment)) {
	my $exptidx = $experiment->idx();
	my $pid     = $experiment->pid();
	my $eid     = $experiment->eid();

	# Reserve node to hold it from being messed with.
	print STDERR
	    "*** Reserving new node $node_id to $pid/$eid\n";

	DBQueryWarn("insert into reserved ".
		    "(node_id, exptidx, pid, eid, rsrv_time, vname) ".
		    "values ('$node_id', $exptidx, ".
		    "        '$pid', '$eid', now(), '$node_id')")
	    or goto bad;
    }

    #
    # Add vnode counts.
    #
    if ($role eq $Node::NODEROLE_TESTNODE && $virtnode_capacity) {
	my $vtype = $type;
	if (!($vtype =~ s/pc/pcvm/)) {
	    $vtype = "$vtype-vm";
	}
	my $pcvmtype = ($isremote ? "pcvwa" : "pcvm");

	DBQueryWarn("insert into node_auxtypes set node_id='$node_id', " .
		    "type='$pcvmtype', count=$virtnode_capacity")
	    or goto bad;
	    
	DBQueryWarn("insert into node_auxtypes set node_id='$node_id', " .
		    "type='$vtype', count=$virtnode_capacity")
	    or goto bad;
    }
    return Node->Lookup($node_id);
    
  bad:
    foreach my $table (@cleantables) {
	DBQueryWarn("delete from $table where node_id='$node_id'");
    }
    return undef;
}

229
#
230
# Refresh a class instance by reloading from the DB.
231
#
232
sub Refresh($)
233
{
234 235 236 237
    my ($self) = @_;

    return -1
	if (! ref($self));
238

239
    my $nodeid = $self->node_id();
240

241 242 243 244 245 246 247 248 249 250 251 252
    my $query_result =
	DBQueryWarn("select * from nodes as n ".
		    "where n.node_id='$nodeid'");

    return -1
	if (!$query_result || !$query_result->numrows);

    $self->{"DBROW"}  = $query_result->fetchrow_hashref();
    # Force reload
    $self->{"RSRV"}     = undef;
    $self->{"TYPEINFO"} = undef;
    return 0;
253 254 255
}

#
256 257 258
# Stringify for output.
#
sub Stringify($)
259
{
260 261 262
    my ($self) = @_;
    
    my $nodeid = $self->node_id();
263

264
    return "[Node: $nodeid]";
265 266
}

267 268 269 270 271 272 273 274 275
#
# Check permissions. Allow for either uid or a user ref until all code
# updated.
#
sub AccessCheck($$$)
{
    my ($self, $user, $access_type) = @_;

    # Must be a real reference. 
276
    return 0
277 278
	if (! ref($self));

279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300
    if ($access_type < TB_NODEACCESS_MIN ||
	$access_type > TB_NODEACCESS_MAX) {
	print "*** Invalid access type: $access_type!\n";
	return 0;
    }
    # Admins do whatever they want.
    return 1
	if ($user->IsAdmin());

    my $mintrust;

    if ($access_type == TB_NODEACCESS_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    else {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }

    # Get the reservation for this node. Only admins can mess with free nodes.
    my $experiment = $self->Reservation();
    return 0
	if (!defined($experiment));
301

302 303 304 305 306 307 308 309 310 311 312 313 314 315
    my $group = $experiment->GetGroup();
    return 0
	if (!defined($group));
    my $project = $experiment->GetProject();
    return 0
	if (!defined($project));

    #
    # Either proper permission in the group, or group_root in the
    # project. This lets group_roots muck with other people's
    # nodes, including those in groups they do not belong to.
    #
    return TBMinTrust($group->Trust($user), $mintrust) ||
	TBMinTrust($project->Trust($user), PROJMEMBERTRUST_GROUPROOT);
316 317
}

318
#
319 320 321
# Lazily load the reservation info.
#
sub IsReserved($)
322
{
323
    my ($self) = @_;
324

325 326
    return -1
	if (! ref($self));
327

328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
    if (! defined($self->{"RSRV"})) {
	my $nodeid = $self->node_id();
	
	my $query_result =
	    DBQueryWarn("select * from reserved " .
			"where node_id='$nodeid'");
	return -1
	    if (!$query_result);
	return 0
	    if (!$query_result->numrows);

	$self->{"RSRV"} = $query_result->fetchrow_hashref();
	return 1;
    }
    return 1;
343 344
}

345 346 347 348 349 350 351
#
# Get the experiment this node is reserved too, or null.
#
sub Reservation($)
{
    my ($self) = @_;

352
    return undef
353 354
	if (! ref($self));

355
    return undef
356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391
	if (! $self->IsReserved());

    return Experiment->Lookup($self->{"RSRV"}->{'pid'},
			      $self->{"RSRV"}->{'eid'});
}

#
# Get the raw reserved table info and return it, or null if no reservation
#
sub ReservedTableEntry($)
{
    my ($self) = @_;

    return undef
	if (! ref($self));

    return undef
	if (! $self->IsReserved());

    return $self->{"RSRV"};
}

# Need to create a set of access methods for the reservation.
sub vname($)
{
    my ($self) = @_;

    return undef
	if (! ref($self));

    return undef
	if (! $self->IsReserved());

    return $self->{"RSRV"}->{'vname'};
}

392 393 394 395 396
#
# Return type info. We cache this in the instance since node_type stuff
# does not change much.
#
sub NodeTypeInfo($)
397
{
398
    my ($self) = @_;
399 400

    return undef
401
	if (! ref($self));
402

403 404 405 406 407 408 409 410 411 412
    return $self->{"TYPEINFO"}
        if (defined($self->{"TYPEINFO"}));

    my $type = $self->type();
    my $nodetype = NodeType->Lookup($type);
    
    $self->{"TYPEINFO"} = $nodetype
	if (defined($nodetype));
    
    return $nodetype;
413 414
}

415 416 417 418
#
# Lookup a specific attribute in the nodetype info. 
#
sub NodeTypeAttribute($$$;$)
419
{
420 421 422 423
    my ($self, $attrkey, $pattrvalue, $pattrtype) = @_;
    
    return -1
	if (!ref($self));
424

425
    my $typeinfo = $self->NodeTypeInfo();
426

427 428
    return -1
	if (!defined($typeinfo));
429

430
    return $typeinfo->GetAttribute($attrkey, $pattrvalue, $pattrtype);
431 432
}

433 434 435 436 437 438 439 440 441 442 443 444 445
#
# Shortcuts to "common" type information.
# Later these might be overriden by node attributes.
#
sub class($)          { return NodeTypeInfo($_[0])->class(); }
sub isvirtnode($)     { return NodeTypeInfo($_[0])->isvirtnode(); }
sub isjailed($)       { return NodeTypeInfo($_[0])->isjailed(); }
sub isdynamic($)      { return NodeTypeInfo($_[0])->isdynamic(); }
sub isremotenode($)   { return NodeTypeInfo($_[0])->isremotenode(); }
sub issubnode($)      { return NodeTypeInfo($_[0])->issubnode(); }
sub isplabdslice($)   { return NodeTypeInfo($_[0])->isplabdslice(); }
sub isplabphysnode($) { return NodeTypeInfo($_[0])->isplabphysnode(); }
sub issimnode($)      { return NodeTypeInfo($_[0])->issimnode(); }
446

447 448 449 450 451 452 453
#
# And these are the less common attributes, but still common enough to
# warrant shortcuts.
#
sub default_osid($;$) {
    return NodeTypeInfo($_[0])->default_osid($_[1]);
}
454 455 456
sub default_imageid($;$) {
    return NodeTypeInfo($_[0])->default_imageid($_[1]);
}
457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473
sub imageable($;$) {
    return NodeTypeInfo($_[0])->imageable($_[1]);
}
sub disksize($;$) {
    return NodeTypeInfo($_[0])->disksize($_[1]);
}
sub disktype($;$) {
    return NodeTypeInfo($_[0])->disktype($_[1]);
}
sub bootdisk_unit($;$) {
    return NodeTypeInfo($_[0])->bootdisk_unit($_[1]);
}
sub control_iface($;$) {
    return NodeTypeInfo($_[0])->control_iface($_[1]);
}
sub rebootable($;$) {
    return NodeTypeInfo($_[0])->rebootable($_[1]);
474 475
}

476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499
#
# Perform some updates ...
#
sub Update($$)
{
    my ($self, $argref) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $nodeid = $self->node_id();

    my $query = "update nodes set ".
	join(",", map("$_='" . $argref->{$_} . "'", keys(%{$argref})));

    $query .= " where node_id='$nodeid'";

    return -1
	if (! DBQueryWarn($query));

    return Refresh($self);
}

500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626
#
# Insert a Log entry for a node.
#
sub InsertNodeLogEntry($$$$)
{
    my ($self, $user, $type, $message) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    return -1
	if (! grep {$_ eq $type} TB_NODELOGTYPES());

    # XXX Eventually this should change, but it uses non-existent uids!
    my $dbid    = (defined($user) ? $user->uid_idx() : 0);
    my $dbuid   = (defined($user) ? $user->uid()     : "root");
    my $node_id = $self->node_id();
    $message    = DBQuoteSpecial($message);

    return -1
	if (! DBQueryWarn("insert into nodelog values ".
			  "('$node_id', NULL, '$type', '$dbuid', '$dbid', ".
			  " $message, now())"));
    return 0;
}

#
# Mark a node for an update.
#
sub MarkForUpdate($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $node_id = $self->node_id();

    return -1
	if (! DBQueryWarn("update nodes set ".
			  "update_accounts=GREATEST(update_accounts,1) ".
			  "where node_id='$node_id'"));

    return Refresh($self);
}
# Class method!
sub CheckUpdateStatus($$$@)
{
    my ($class, $pdone, $pnotdone, @nodelist) = @_;
    my @done = ();
    my @notdone = ();

    my $where = join(" or ",
		     map("node_id='" . $_->node_id() . "'", @nodelist));

    my $query_result =
	DBQueryWarn("select node_id,update_accounts from nodes ".
		    "where ($where)");

    return -1
	if (! $query_result);

    while (my ($node_id,$update_accounts) = $query_result->fetchrow_array) {
	my $node = Node->Lookup($node_id);
	if (! $update_accounts) {
	    Refresh($node);
	    push(@done, $node);
	}
	else {
	    push(@notdone, $node);
	}
    }
    
    @$pdone = @done;
    @$pnotdone = @notdone;
    return 0;
}

#
# Clear the bootlog.
#
sub ClearBootLog($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $node_id = $self->node_id();

    return -1
	if (! DBQueryWarn("delete from node_bootlogs ".
			  "where node_id='$node_id'"));
    return 0;
}

#
# Get the bootlog.
#
sub GetBootLog($$)
{
    my ($self, $pref) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    $$pref = undef;

    my $node_id = $self->node_id();

    my $query_result =
	DBQueryWarn("select bootlog from node_bootlogs ".
		    "where node_id='$node_id'");
    return -1
	if (! $query_result);
    return 0
	if (! $query_result->numrows);

    my ($bootlog) = $query_result->fetchrow_array();
    $$pref = $bootlog;
    return 0;
}

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668
#
# Create new vnodes. This routine obviously cannot be called on a specific
# instance since it does not exist! The argument is still a reference; to a
# a hash of options to be used when creating the new node(s). A list of the
# node names is returned.
#
sub CreateVnodes($$)
{
    my ($rptr, $options) = @_;
    my @created   = ();
    my @tocreate  = ();

    if (!defined($options->{'pid'})) {
	print STDERR "*** CreateVnodes: Must supply a pid!\n";
	return -1;
    }
    if (!defined($options->{'eid'})) {
	print STDERR "*** CreateVnodes: Must supply a eid!\n";
	return -1;
    }
    if (!defined($options->{'count'})) {
	print STDERR "*** CreateVnodes: Must supply a count!\n";
	return -1;
    }
    if (!defined($options->{'vtype'})) {
	print STDERR "*** CreateVnodes: Must supply a vtype!\n";
	return -1;
    }
    if (!defined($options->{'nodeid'})) {
	print STDERR "*** CreateVnodes: Must supply a pnode!\n";
	return -1;
    }
    
    my $debug   = defined($options->{'debug'}) && $options->{'debug'};
    my $impotent= defined($options->{'impotent'}) && $options->{'impotent'};
    my $verbose = defined($options->{'verbose'}) && $options->{'verbose'};
    my $pid     = $options->{'pid'};
    my $eid     = $options->{'eid'};
    my $count   = $options->{'count'};
    my $vtype   = $options->{'vtype'};
    my $pnode   = $options->{'nodeid'};

669 670 671 672 673 674
    my $exptidx;
    if (!TBExptIDX($pid, $eid, \$exptidx)) {
	print STDERR "*** CreateVnodes: No such experiment $pid/$eid!\n";
	return -1;
    }

675 676 677
    #
    # Need the vtype node_type info. 
    #
678 679
    my $nodetype = NodeType->Lookup($vtype);
    if (! defined($nodetype)) {
680 681 682
	print STDERR "*** CreateVnodes: No such node type '$vtype'\n";
	return -1;
    }
683
    if (!$nodetype->isdynamic()) {
684 685 686
	print STDERR "*** CreateVnodes: Not a dynamic node type: '$vtype'\n";
	return -1;
    }
687 688
    my $isremote = $nodetype->isremotenode();
    my $isjailed = $nodetype->isjailed();
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708

    #
    # Make up a priority (just used for sorting). We need the name prefix
    # as well for consing up the node name.
    #
    my $nodeprefix;
    my $nodenum;
    if ($pnode =~ /^(.*\D)(\d+)$/) {
	$nodeprefix = $1;
	$nodenum    = $2;
    }
    else {
	print STDERR "*** CreateVnodes: Unexpected nodeid '$pnode'\n";
	return -1;
    }

    #
    # Need the opmode, which comes from the OSID, which is in the node_types
    # table. 
    #
709
    my $osid = $nodetype->default_osid();
710
    
711
    my $query_result =
712 713 714 715 716 717 718 719 720 721 722 723 724 725
	DBQueryWarn("select op_mode from os_info where osid='$osid'");
    return -1
	if (! $query_result);
    
    if (! $query_result->numrows) {
	print STDERR "*** CreateVnodes: No such OSID '$osid'\n";
	return -1;
    }
    my ($opmode) = $query_result->fetchrow_array();

    #
    # Need IP for jailed nodes.
    # 
    my $IPBASE = TBDB_JAILIPBASE();
726 727
    my $IPBASE1;
    my $IPBASE2;
728
    if ($IPBASE =~ /^(\d+).(\d+).(\d+).(\d+)/) {
729 730
	$IPBASE1 = $1;
	$IPBASE2 = $2;
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790
    }
    else {
	print STDERR "*** CreateVnodes: Bad IPBASE '$IPBASE'\n";
	return -1;
    }

    #
    # Assign however many we are told to (typically by assign). Locally
    # this is not a problem since nodes are not shared; assign always
    # does the right thing and we do what it says. In the remote case,
    # nodes are shared and so it is harder to make sure that nodes are not
    # over committed. I am not going to worry about this right now though
    # cause it would be too hard. For RON nodes this is fine; we just
    # tell people to log in and use them. For plab nodes, this is more
    # of a problem, but I am going to ignore that for now too since we do
    # not ever allocate enough to worry; must revisit this at some point.
    # 
    # Look to see what nodes are already allocated on the node, and skip
    # those. Must do this with tables locked, of course.
    #
    DBQueryFatal("lock tables nodes write, reserved write, ".
		 "node_status write, node_hostkeys write");

    if (0 && !$isremote) {
	for (my $i = 1; $i <= $count; $i++) {
	    push(@tocreate, $i);
	}
    }
    else {
	my $n = 1;
	my $i = 0;

	while ($i < $count) {
	    my $vnodeid = $nodeprefix . "vm" . $nodenum . "-" . $n;
	    
	    $query_result =
		DBQueryWarn("select node_id from nodes ".
			     "where node_id='$vnodeid'");
	    goto bad
		if (!$query_result);

	    if (!$query_result->numrows) {
		push(@tocreate, $n);
		$i++;
	    }
	    $n++;
	}
    }

    # See below.
    my $eventstate = TBDB_NODESTATE_SHUTDOWN();
    my $allocstate = TBDB_ALLOCSTATE_FREE_CLEAN();

    #
    # Create a bunch.
    #
    foreach my $i (@tocreate) {
	my $vpriority = 10000000 + ($nodenum * 1000) + $i;
	my $vnodeid   = $nodeprefix . "vm" . $nodenum . "-" . $i;

791 792 793 794 795 796 797 798 799 800 801 802
	#
	# Construct the vnode IP.  The general form is:
	#	<IPBASE1>.<IPBASE2>.<pnode>.<vnode>
	# but if <pnode> is greater than 254 we have to increment
	# IPBASE2.
	#
	# XXX at Utah our second big cluster of nodes starts at
	# nodenum=201 and I would like our vnode IPs to align
	# at that boundary, so 254 becomes 200.
	#
	my $nodenumlimit = $ISUTAH ? 200 : 254;
	my $pnet = $IPBASE2;
803
	my $pnode2 = int($nodenum);
804 805 806 807 808 809
	while ($pnode2 > $nodenumlimit) {
	    $pnet++;
	    $pnode2 -= $nodenumlimit;
	}
	my $jailip = "${IPBASE1}.${pnet}.${pnode2}.${i}";

810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831
	if ($verbose) {
	    if ($impotent) {
		print "Would allocate $vnodeid on $pnode ($vtype, $osid)\n";
	    }
	    else {
		print "Allocating $vnodeid on $pnode ($vtype, $osid)\n";
	    }
	}

	my $statement =
	         "insert into nodes set ".
		 "       node_id='$vnodeid', " .
		 "       type='$vtype', ".
		 "       phys_nodeid='$pnode', ".
		 "       role='virtnode', " .
		 "       priority='$vpriority', ".
		 "       op_mode='$opmode', " .
		 "       eventstate='$eventstate', " .
		 "       allocstate='$allocstate', ".
		 "       def_boot_osid='$osid', " .
		 "       update_accounts=1, ".
		 "       jailflag=$isjailed ".
832
		 (($isjailed && !$isremote) ? ",jailip='$jailip'" : "");
833 834 835 836 837 838 839 840 841 842 843 844 845 846 847

	print STDERR "$statement\n"
	    if ($debug);

	if (!$impotent && !DBQueryWarn($statement)) {
	    print STDERR "*** CreateVnodes: Could not create nodes entry\n";
	    goto bad;
	}

	#
	# Also reserve the node!
	# 
	$statement =
	         "insert into reserved set ".
		 "       node_id='$vnodeid', " .
848
		 "       exptidx=$exptidx, ".
849 850
		 "       pid='$pid', ".
		 "       eid='$eid', ".
851
		 "       vname='$vnodeid', ".
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896
		 "       old_pid='', ".
		 "       old_eid=''";

	print STDERR "$statement\n"
	    if ($debug);

	if (!$impotent && !DBQueryWarn($statement)) {
	    print STDERR "*** CreateVnodes: Could not create reserved entry\n";
	    goto bad;
	}

	$statement =
	         "insert into node_status set ".
		 "       node_id='$vnodeid', " .
		 "       status='up', ".
		 "       status_timestamp=now()";

	print STDERR "$statement\n"
	    if ($debug);

	if (!$impotent && !DBQueryWarn($statement)) {
	    print STDERR "*** CreateVnodes: Could not create status entry\n";
	    goto bad;
	}

	$statement =
	         "insert into node_hostkeys set ".
		 "       node_id='$vnodeid'";

	print STDERR "$statement\n"
	    if ($debug);

	if (!$impotent && !DBQueryWarn($statement)) {
	    print STDERR "*** CreateVnodes: Could not create hostkeys entry\n";
	    goto bad;
	}
	
	push(@created, $vnodeid);
    }
    DBQueryFatal("unlock tables");
    @$rptr = @created;
    return 0;

  bad:
    if (!$impotent) {
897
	foreach my $vnodeid (@created) {
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930
	    DBQueryWarn("delete from reserved where node_id='$vnodeid'");
	    DBQueryWarn("delete from nodes where node_id='$vnodeid'");
	    DBQueryWarn("delete from node_hostkeys where node_id='$vnodeid'");
	    DBQueryWarn("delete from node_status where node_id='$vnodeid'");
	}
    }
    DBQueryFatal("unlock tables");
    return -1;
}

#
# Delete vnodes created in above step.
# 
sub DeleteVnodes(@)
{
    my (@vnodes) = @_;

    DBQueryWarn("lock tables nodes write, reserved write");
    foreach my $vnodeid (@vnodes) {
	DBQueryWarn("delete from reserved where node_id='$vnodeid'");
	DBQueryWarn("delete from nodes where node_id='$vnodeid'");
    }
    DBQueryFatal("unlock tables");
    
    foreach my $vnodeid (@vnodes) {
	DBQueryWarn("delete from node_hostkeys where node_id='$vnodeid'");
	DBQueryWarn("delete from node_status where node_id='$vnodeid'");
	DBQueryWarn("delete from node_rusage where node_id='$vnodeid'");
    }

    return 0;
}

931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991
sub SetNodeHistory($$$$)
{
    my ($self, $op, $user, $experiment) = @_;

    my $exptidx = $experiment->idx();
    my $nodeid  = $self->node_id();
    my $now     = time();
    my $uid;
    my $uid_idx;

    if (!defined($user)) {
	# Should this be elabman instead?
	$uid = "root";
	$uid_idx = 0;
    }
    else {
	$uid = $user->uid();
	$uid_idx = $user->uid_idx();
    }
    if ($op eq TB_NODEHISTORY_OP_MOVE() || $op eq TB_NODEHISTORY_OP_FREE()) {
	# Summary info. We need the last entry made.
	my $query_result =
	    DBQueryWarn("select exptidx,stamp from node_history ".
			"where node_id='$nodeid' ".
			"order by stamp desc limit 1");

	if ($query_result && $query_result->numrows) {
	    my ($lastexptidx,$stamp) = $query_result->fetchrow_array();
	    my $checkexp;

	    if ($op eq TB_NODEHISTORY_OP_FREE()) {
		$checkexp = $experiment;
	    }
	    else {
		$checkexp = Experiment->Lookup($lastexptidx);
	    }
	    if (defined($checkexp)) {
		if ($checkexp->pid() eq NODEDEAD_PID() &&
		    $checkexp->eid() eq NODEDEAD_EID()) {
		    my $diff = $now - $stamp;

		    DBQueryWarn("update node_utilization set ".
				" down=down+$diff ".
				"where node_id='$nodeid'")
		    }
		else {
		    my $diff = $now - $stamp;

		    DBQueryWarn("update node_utilization set ".
				" allocated=allocated+$diff ".
				"where node_id='$nodeid'");
		}
	    }
	}
    }
    return DBQueryWarn("insert into node_history set ".
		       "  history_id=0, node_id='$nodeid', op='$op', ".
		       "  uid='$uid', uid_idx='$uid_idx', ".
		       "  stamp=$now, exptidx=$exptidx");
}

992 993 994
# _Always_ make sure that this 1 is at the end of the file...

1;