tbswap.in 29.2 KB
Newer Older
1 2 3 4
#!/usr/bin/perl -w

#
# EMULAB-COPYRIGHT
5
# Copyright (c) 2000-2004 University of Utah and the Flux Group.
6 7 8 9
# All rights reserved.
#
use English;

10 11 12
# Returns 0 on success.
# Returns 1 on non-assign_wrapper failure.
# Returns (1 | assign_wrapper's errorcode) on assign_wrapper failure.
13 14
# Returns |0x40 if update caused a swapout. Icky.
# Returns -1 on uncontrolled error (die called).
15

16 17 18 19 20
# XXX: handle error cases for update? (backup the db?)
# XXX: Shouldn't do idempotent stuff twice for update.
# XXX: repush/calc routing for update??? (tbprerun)
# XXX: previz for update???              (tbprerun)
# XXX: make snmpit faster for update.
Chad Barb's avatar
Chad Barb committed
21 22 23
#
# XXX: for update, expt is swapped out on os_setup fail.
#      (we only recover if assign fails)
24 25 26

sub usage()
{
27
    print STDERR "Usage: $0 -force { in | out | update [-reboot] [-eventsys_restart] } pid eid\n";
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
    exit(-1);
}

#
# Configure variables
#
my $TBROOT         = "@prefix@";
my $TESTMODE       = @TESTMODE@;
my $DISABLE_EVENTS = "@DISABLE_EVENT_SCHED@";

# Untaint the path
$ENV{'PATH'} = "/usr/bin:$TBROOT/libexec:$TBROOT/libexec/ns2ir" . 
    ":$TBROOT/sbin:$TBROOT/bin";

#
# Testbed Support libraries
#
use lib "@prefix@/lib";
use libdb;
use libtestbed;
require exitonwarn; # exitonwarn isn't really a module, so just require it

#
# Actual swap-in and swap-out functions, defined below.
#
53 54 55
sub doSwapout($);
sub doSwapin($);

56 57 58 59 60 61 62 63 64 65 66 67 68
#
# Firewall stuff
# XXX maybe should be elsewhere
#
sub FWSETUP()  { return 1; }
sub FWTEARDOWN()  { return 2; }
sub doFW($$$);

# XXX fixme: should not be hardwired!
my $cnetstack = "-S cisco2";
my $cnetvlanname = "Control";


69 70 71 72
sub REAL()    { return 4; }
sub CLEANUP() { return 3; }
sub RETRY()   { return 2; }
sub UPDATE()  { return 1; }
Chad Barb's avatar
Chad Barb committed
73
sub UPDATE_RECOVER()  { return 0; }
74 75 76 77 78 79 80

#
# Turn off line buffering on output
#

$| = 1;

81 82
my $updateReboot   = 0;
my $updateReconfig = 1;
83 84
my $update_Eventsys_restart = 0;
my $elabinelab     = 0;
85 86
my $force  = 0;
my $errors = 0;
87
my $updatehosed = 0;
88
my $state;
89
my $canceled;
90 91
my $os_setup_pid;
my $cleanvlans;
92
my $nextState;
93 94

#
95
# First argument is either "in", "out", or "update";
96 97 98 99 100
# this value goes into $swapop.
#

my $swapop = shift;	

101 102 103 104
if (!$swapop || 
    (($swapop ne "in") && 
     ($swapop ne "out") &&
     ($swapop ne "update"))) {
105 106 107 108 109 110 111 112 113 114 115
    usage();
}

#
# Get other arguments.
#

while ($#ARGV > 1) {
    $arg = shift;
    if ($arg eq "-force") {
	$force = 1;
Chad Barb's avatar
Chad Barb committed
116 117
    } elsif ($arg eq "-reboot") {
	$updateReboot = 1;
118
	$updateReconfig = 0;
119 120 121
    } elsif ($arg eq "-noreconfig") {
	$updateReboot   = 0;
	$updateReconfig = 0;
122 123
    } elsif ($arg eq "-eventsys_restart" && $swapop eq "update") {
	$update_Eventsys_restart = 1;
124 125 126 127 128 129 130 131 132
    } else {
	usage();
    }
}
if ($#ARGV < 1) {
    usage();
}
my ($pid,$eid) = @ARGV;

133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
#
# Untaint the arguments.
#
if ($pid =~ /^([-\@\w.]+)$/) {
    $pid = $1;
}
else {
    die("Tainted argument $pid!\n");
}
if ($eid =~ /^([-\@\w.]+)$/) {
    $eid = $1;
}
else {
    die("Tainted argument $eid!\n");
}

149 150 151 152 153 154 155 156 157 158 159 160 161
TBDebugTimeStampsOn();

#
# Print starting message.
#

print "Beginning swap-$swapop for $pid/$eid. " . TBTimeStamp() . "\n";
TBDebugTimeStamp("tbswap $swapop started");

#
# Get experiment state; verify that experiment exists.
#
if (! ($state = ExpState($pid, $eid))) {
162 163
    die("*** $0:\n".
	"    No such experiment $pid/$eid\n");
164
}
165 166 167 168 169 170
# Sanity check the current state. 
if (!$force) {
    if ($swapop eq "in") {
	die("*** $0:\n".
	    "    Experiment should be ACTIVATING. Currently $state.\n")
	    if ($state ne EXPTSTATE_ACTIVATING);
171
    }
172 173 174 175
    elsif ($swapop eq "out") {
	die("*** $0:\n".
	    "    Experiment should be SWAPPING. Currently $state.\n")
	    if ($state ne EXPTSTATE_SWAPPING);
176
    }
177 178 179 180
    elsif ($swapop eq "update") {
	die("*** $0:\n".
	    "    Experiment should be MODIFY_RESWAP. Currently $state.\n")
	    if ($state ne EXPTSTATE_MODIFY_RESWAP);
181 182
    }
}
183 184 185 186 187
# Get elabinelab status. See below.
if (! TBExptIsElabInElab($pid, $eid, \$elabinelab)) {
    die("*** $0:\n".
	"    Could not get elabinelab status for experiment $pid/$eid\n");
}
188

189 190 191 192 193
#
# See if the experiment is firewalled
#
my $firewalled = TBExptFirewall($pid, $eid);

194 195 196
#
# Do actual swapping
#
197 198 199 200 201
if ($swapop eq "out") {
    #
    # Swap out
    #
    $errors = doSwapout(REAL);
202
}
203
elsif ($swapop eq "update") {
204 205 206 207 208 209 210 211 212 213 214 215

    #
    # Disallow modification of firewalled experiments til we figure
    # out how to do it right.
    #
    if ($firewalled) {
	print STDERR "Cannot modify firewalled experiment right now.\n";
	print "Failingly finished swap-$swapop for $pid/$eid. ".TBTimeStamp()."\n";
	TBDebugTimeStamp("tbswap $swapop finished (failed)");
	exit(1);
    }

216 217 218 219 220 221 222
    #
    # Update.
    #
    # Phase One -- swap experiment partially out.
    #
    print STDERR "Backing up physical state...\n";
    TBExptBackupPhysicalState($pid,$eid);
223

224
    $errors = doSwapout(UPDATE);
Chad Barb's avatar
Chad Barb committed
225

226
    if ($errors) {
227
	#
228 229 230 231 232
	# Clean up the mess, leaving the experiment in the SWAPPED state,
	# 
	print STDERR "Cleaning up after errors.\n";
	doSwapout(CLEANUP);
	$updatehosed = 1;
233
    }
234
    else {
235
	#
236
	# Phase Two -- swap experiment back in.
237
	#
Chad Barb's avatar
Chad Barb committed
238 239
	$errors = doSwapin(UPDATE);

240
	if ($errors) {
Chad Barb's avatar
Chad Barb committed
241 242 243
	    #
	    # There were errors; see if we can recover.
	    #
244
	    my $CanRecover = 1;
Chad Barb's avatar
Chad Barb committed
245 246 247

	    if ($errors != 7) {
		print STDERR "Update failure occurred _after_ assign phase; ";
248
		$CanRecover = 0;
Chad Barb's avatar
Chad Barb committed
249 250
	    }

251 252 253 254 255 256 257 258
	    if ($CanRecover) {
		print STDERR "Recovering virtual and physical state.\n";

		if (TBExptRemoveVirtualState($pid, $eid) ||
		    TBExptRestoreVirtualState($pid, $eid) ||
		    TBExptRestorePhysicalState($pid,$eid)) {
		    print STDERR "Could not restore backed-up state; ";
		    $CanRecover = 0;
Chad Barb's avatar
Chad Barb committed
259
		}
260 261 262 263 264 265 266
		else {
		    print STDERR "Doing a recovery swap-in of old state.\n";

		    if (doSwapin(UPDATE_RECOVER)) {
			print STDERR "Could not swap in old physical state; ";
			$CanRecover = 0;
		    }
Chad Barb's avatar
Chad Barb committed
267 268
		}
	    }
269 270 271 272 273 274 275

	    #
	    # Some part of the recovery failed; must swap it out. swapexp
	    # (caller) will then have to do more clean up, hence the special
	    # exit status indicated by $updatehosed.
	    # 
	    if (! $CanRecover) {
276
		print STDERR "Recovery aborted! Swapping experiment out.\n";
Chad Barb's avatar
Chad Barb committed
277
		doSwapout(CLEANUP);
278 279 280 281
		$updatehosed = 1;
	    }
	    else {
		print STDERR "Update recovery successful.\n";
Chad Barb's avatar
Chad Barb committed
282
	    }
283
	}
Chad Barb's avatar
Chad Barb committed
284 285
    }
}
286 287 288 289 290 291 292
elsif ($swapop eq "in") {
    #
    # Swap in
    #
    my $retries = 2;
    
    $errors = doSwapin(REAL);
Chad Barb's avatar
Chad Barb committed
293

294 295 296 297 298 299 300 301 302 303
    #
    # Attempt a retry if: 
    #   a) there were errors, 
    #   b) doswapin() indicated (via return code 3) a retry is appropriate,
    #   c) we haven't tried too many times already.
    #   d) The cancelflag has not been set.
    #   e) $TESTMODE == 0.
    #
    while ($errors == 3 && $retries && !$canceled && !$TESTMODE) {
	$retries--;
304

305 306
	print STDERR "Cleaning up after errors; will try again.\n";
	doSwapout(RETRY);
307

308 309
	print STDERR "Trying again...\n";
	$errors = doSwapin(RETRY);
310
    }
311 312
    if ($errors || $canceled) {
	print STDERR "Cleaning up after " .
313
	    ($canceled ? "cancelation" : "errors") . ".\n";
314
	doSwapout(CLEANUP);
315 316 317 318 319 320 321
    }
}

#
# Write appropriate message and exit.
#
if ($errors) {
322
    print "Failingly finished swap-$swapop for $pid/$eid. ".TBTimeStamp()."\n";
323
    TBDebugTimeStamp("tbswap $swapop finished (failed)");
Chad Barb's avatar
Chad Barb committed
324

325 326
    # Pass out magic value to indicate that update failed!
    exit(1 | ($updatehosed ? 0x40 : 0));
327
}
328
print "Successfully finished swap-$swapop for $pid/$eid. " .TBTimeStamp()."\n";
329 330
TBDebugTimeStamp("tbswap $swapop finished (succeeded)");
exit(0);
331 332 333 334

#################################

##
Chad Barb's avatar
Chad Barb committed
335
#
336 337
# doSwapout - Swaps experiment out.
#
Chad Barb's avatar
Chad Barb committed
338
#             If in REAL or CLEANUP,
339 340 341
#             this function will free all nodes for the 
#             experiment.
#
Chad Barb's avatar
Chad Barb committed
342
#             If in RETRY or UDPATE,
343 344 345 346 347 348
#             only nodes not in RES_READY will be freed.
#
#             Returns 0 on success, >0 on failure.
#
##

349 350
sub doSwapout($) {
    my $type = shift; # REAL==4, CLEANUP==3, RETRY==2, UPDATE==1.
351 352 353 354 355 356 357 358 359 360 361
    my $swapout_errors = 0;

    #
    # wait for os_setup;
    # this only applies if called after a failed doswapin.
    #
    if ($os_setup_pid) {
	print "Waiting for os_setup to finish\n";
	waitpid($os_setup_pid, 0);
	undef $os_setup_pid;
    }
Chad Barb's avatar
Chad Barb committed
362

363
    if (! $TESTMODE) { 
364 365 366
	if (! ($DISABLE_EVENTS || $elabinelab)) {
	    if ($type >= RETRY ||
		($update_Eventsys_restart && $type == UPDATE) ) {
367 368 369 370 371
		print "Stopping the event system\n";
		if (system("eventsys_control stop $pid $eid")) {
		    print STDERR "*** Failed to stop the event system.\n";
		    $swapout_errors = 1;
		}
372 373
	    }
	}
374 375 376 377 378 379 380 381 382 383 384 385 386 387
	
	#
	# Do teardown of inner elab. We must do this before we teardown the
	# vlans since the inner control network is a vlan, and we want that
	# active so inner boss can reboot the inner nodes (avoid power cycle).
	#
	if ($elabinelab) {
	    print "Tearing down elabinelab. This could take a while.\n";
	    if (system("elabinelab -k $pid $eid")) {
		print STDERR "*** Failed to teardown elabinelab!\n";
		$swapout_errors = 1;
	    }
	}

388
	#
Chad Barb's avatar
Chad Barb committed
389
	# Clean up any VLANs in experiment.
390
	#
Chad Barb's avatar
Chad Barb committed
391 392 393 394 395 396 397
	TBDebugTimeStamp("snmpit started");
	print STDERR "Removing VLANs.\n";
	if (system("snmpit -r $pid $eid")) {
	    print STDERR "*** Failed to reset VLANs\n";
	    $swapout_errors = 1;
	} else {
	    $cleanvlans = 0;
398
	}
Chad Barb's avatar
Chad Barb committed
399
	TBDebugTimeStamp("snmpit finished");
400
    }
Chad Barb's avatar
Chad Barb committed
401

402 403 404
    if ($type >= CLEANUP) {
	#
	# We're not attempting a retry;
405
	#
406
	# Stop all of the vnodes.
407
	#
408
	if (! $TESTMODE) { 	
409 410 411 412 413 414 415
	    print "Tearing down virtual nodes.\n";
	    TBDebugTimeStamp("vnode_setup -k started");
	    if (system("vnode_setup -d -k $pid $eid")) {
		print STDERR "*** Failed to tear down vnodes.\n";
		$swapout_errors = 1;
	    }
	    TBDebugTimeStamp("vnode_setup finished");
416 417
	}

418 419 420 421 422 423 424 425 426 427 428 429
	if ($firewalled) {
	    # XXX put all nodes into admin mode
	    print STDERR "Confining firewalled nodes.\n";
	    TBDebugTimeStamp("moving nodes to purgatory");

	    #
	    # Once all nodes are safely in the admin MFS, we can take
	    # down the firewall
	    #
	    doFW($pid, $eid, FWTEARDOWN);
	}

430 431
	#
	# remove all nodes from the experiment.
Chad Barb's avatar
Chad Barb committed
432
	# (nfree will send them to RES_FREE_DIRTY)
433 434 435 436 437 438 439 440
	#
	print STDERR "Freeing nodes.\n";
	TBDebugTimeStamp("nfree started");
	if (system("nfree $pid $eid")) {
	    print STDERR "*** Could not free nodes.\n";
	    $swapout_errors = 1;
	}
	TBDebugTimeStamp("nfree finished");
441 442 443 444 445

	#
	# Since this is an actual swapout, 
	# reset our count of swap out nag emails sent.
	#
446
	DBQueryWarn("update experiments set swap_requests='',sim_reswap_count='0' ".
447
		    "where eid='$eid' and pid='$pid'");
448 449
    } else {
	#
450
	# $type == RETRY or $type == UPDATE.
451 452
	# Therefore, don't deallocate nodes which have been successfully
	# incorporated into the experiment (i.e., are RES_READY).
Chad Barb's avatar
Chad Barb committed
453
	# (nfree will send deallocated nodes to RES_FREE_DIRTY)
454
	#
455 456 457 458 459 460 461 462
	my @failedpnodes = ();
	my @failedvnodes = ();
	
	my $db_result =
	    DBQueryFatal("select rv.node_id,n.allocstate,nt.isvirtnode ".
                         "  from reserved as rv ".
			 "left join nodes as n on n.node_id = rv.node_id ".
			 "left join node_types as nt on nt.type=n.type ".
463 464
			 "where rv.pid='$pid' and rv.eid='$eid'");

465
	while (my ($node,$allocstate,$isvirt) = $db_result->fetchrow_array) {
466
	    if ($allocstate ne TBDB_ALLOCSTATE_RES_READY()) {
467 468 469 470 471 472
		if ($isvirt) {
		    push(@failedvnodes, $node);
		}
		else {
		    push(@failedpnodes, $node);
		}
473 474 475
	    }
	}

476 477 478 479 480 481 482 483 484 485 486 487
	#
	# Tear down failed vnodes. Perhaps not needed?
	# 
	if (!$TESTMODE && @failedvnodes > 0) {
	    print "Tearing down failed virtual nodes.\n";
	    TBDebugTimeStamp("vnode_setup -k started");
	    if (system("vnode_setup -d -k $pid $eid @failedvnodes")) {
		print STDERR "*** Failed to tear down vnodes.\n";
		$swapout_errors = 1;
	    }
	    TBDebugTimeStamp("vnode_setup -k finished");
	}
488

489 490 491 492
	#
	# Release all failed nodes.
	# 
	if (@failedpnodes > 0 || @failedvnodes > 0) {
493 494
	    print STDERR "Freeing failed nodes.\n";
	    
495
	    TBDebugTimeStamp("nfree started");
Chad Barb's avatar
Chad Barb committed
496 497 498 499 500
	    #
	    # Specify -x switch so when a physical node gets freed,
	    # any virtual nodes (owned by this experiment)
	    # sitting on top of it are freed as well.
	    #
501 502
	    if (system("nfree -x $pid $eid " .
		       join(" ", (@failedpnodes, @failedvnodes)))) {
503 504 505 506 507 508 509
		print STDERR "*** Could not free nodes.\n";
		$swapout_errors = 1;
	    }
	    TBDebugTimeStamp("nfree finished");
	}
    }

510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533
    if (! $TESTMODE) {
	#
	# If the experiment has no Plab dslice nodes left, but still has
	# a Plab slice, destroy the slice
	#

	# Does the slice exist?
	$db_result =
	    DBQueryFatal("select slicename from plab_slices ".
			 "where pid='$pid' and eid='$eid'");

	if ($db_result->numrows) {
	    # Are there any dslice nodes left?
	    $db_result =
		DBQueryFatal("select n.node_id from nodes as n ".
			     "left join node_types as nt on n.type = nt.type ".
			     "left join reserved as r ".
			     " on r.node_id = n.node_id ".
			     "where r.pid='$pid' and r.eid='$eid' ".
			     " and nt.isplabdslice = 1");

	    if (!$db_result->numrows) {
		print "Destroying Planetlab slice.\n";
		TBDebugTimeStamp("plabslice destroy started");
534
		if (system("plabslice destroy $pid $eid")) {
535 536 537 538 539 540 541 542
		    print STDERR "*** Failed to destroy Plab dslice\n";
		    $swapout_errors = 1;
		}
		TBDebugTimeStamp("plabslice destroy finished");
	    }
	}
    }

543 544 545 546 547 548 549 550
    if (! $TESTMODE) {
	#
	# All of these errors are non-fatal on swapout. We find out about them
	# via email sent from the individual scripts.
	#

	#
	# Only reset mountpoints if this is an actual swapout, and
551
	# not a failed swapin(cleanup), update, or retry.
552
	#
553
	if ($type == REAL) {
554 555 556 557 558 559 560
	    print "Resetting mountpoints.\n";
	    TBDebugTimeStamp("exports started");
	    if (system("exports_setup")) {
		print STDERR "*** Failed to reset mountpoints.\n";
	    }
	    TBDebugTimeStamp("exports finished");
	}
Chad Barb's avatar
Chad Barb committed
561

562 563 564 565
	#
	# Resetting named maps and email lists is fast and idempotent,
	# so whatever.
	#
566 567 568 569 570 571
	print "Resetting named maps.\n";
	TBDebugTimeStamp("named started");
	if (system("named_setup")) {
	    print "*** WARNING: Failed to reset named map.\n";
	}
	TBDebugTimeStamp("named finished");
Chad Barb's avatar
Chad Barb committed
572

573 574
	print "Resetting email lists.\n";
	TBDebugTimeStamp("genelists started");
575
	if (system("genelists -t")) {
576 577 578 579 580
	    print "*** WARNING: Failed to reset email lists.\n";
	}
	TBDebugTimeStamp("genelists finished");
    }

581
    #
582 583 584
    # Wipe the DB clean except during UPDATE or RETRY. In those
    #    cases, assign_wrapper will reset the DB after reading
    #    the info.
585
    #
586 587 588 589
    if ( $type >= CLEANUP ) {
	print STDERR "Resetting DB.\n";
	TBExptRemovePhysicalState( $pid, $eid );
    }
590 591 592 593 594

    return $swapout_errors;
}

##
Chad Barb's avatar
Chad Barb committed
595
#
596 597
# doSwapin - Swaps experiment in.
#
Chad Barb's avatar
Chad Barb committed
598 599 600 601 602
#            Returns:
#              0 - successful swapin
#              1 - failed swapin; cleanup required.
#              3 - failed swapin; cleanup required; can retry.
#              7 - failed swapin; assign failed; no cleanup.
603 604
##

605
sub doSwapin($) {
Chad Barb's avatar
Chad Barb committed
606
    my $type = shift; # REAL==4, RETRY==2, UPDATE==1, UPDATE_RECOVER=0. 
607

608 609 610 611 612
    #
    # assign_wrapper does all the virtual to physical mapping 
    # and updating the DB state.
    #

Chad Barb's avatar
Chad Barb committed
613 614 615 616 617
    if ($type > UPDATE_RECOVER) {
	print "Mapping to physical reality ...\n";
	TBDebugTimeStamp("assign_wrapper started");

	#
618 619 620 621
	# Pass the -u (update) switch into assign_wrapper, which turns on
	# update mode. When doing a retry, must also fix the current nodes
	# to avoid stuff jumping around when simply trying to replace a node
	# that did not boot.
Chad Barb's avatar
Chad Barb committed
622 623
	#
	my $exitcode;
624 625 626
	my $wrapper = "assign_wrapper -u";
	$wrapper .= " -f"
	    if ($type == RETRY);
627
	
628
	if (system("$wrapper $pid $eid")) {
629 630 631 632
	    $exitcode = $? >> 8;

	    print STDERR "*** Failed ($exitcode) to map to reality.\n";

633 634
	    # Wrapper sets this bit when recovery is possible.
	    if ($exitcode & 64) {
635
		# We can recover. 
Chad Barb's avatar
Chad Barb committed
636
		return 7;
637 638
	    }
	    else {
639
		# No recovery, no retry.
Chad Barb's avatar
Chad Barb committed
640 641 642 643
		return 1;
	    }
	}
	TBDebugTimeStamp("assign_wrapper finished");
644

Chad Barb's avatar
Chad Barb committed
645 646
	print "Mapped to physical reality!\n";
    }
647

648
    # Check cancel flag before continuing. No retry, 
649
    TBGetCancelFlag($pid, $eid, \$canceled);
650 651 652
    return 1
	if ($canceled);

653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690
    #
    # Look for any nodes in RES_TEARDOWN. These need to be released,
    # and if a virtnode, they need to be torn down. We cannot wait for
    # the virtnodes to go down with the physnode they are hosted on,
    # so teardown and release the virtnodes first, and then do the
    # physnodes.
    #
    # Errors are fatal; no recovery or retry.
    #
    if ($type == UPDATE) {
	my $allocstate = TBDB_ALLOCSTATE_RES_TEARDOWN();
	
	$db_result =
	    DBQueryFatal("select r.node_id,nt.isvirtnode,nt.isremotenode ".
			 "  from reserved as r ".
			 "left join nodes as n on n.node_id=r.node_id ".
			 "left join node_types as nt on nt.type=n.type ".
			 "where r.pid='$pid' and r.eid='$eid' and ".
			 "      n.allocstate='$allocstate'");

	if ($db_result->numrows) {
	    my @virtnodes = ();
	    my @physnodes = ();
	    
	    print "Tearing down and releasing unused nodes\n";

	    # First teardown/release virtnodes. 
	    while (my ($node,$isvirt,$isrem) = $db_result->fetchrow_array()) {
		if ($isvirt) {
		    push(@virtnodes, $node);
		}
		elsif (!$isrem) {
		    push(@physnodes, $node);
		}
	    }
	    if (@virtnodes) {
		TBDebugTimeStamp("vnode_setup started");
		
691
		if (system("vnode_setup -k $pid $eid @virtnodes")) {
692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710
		    print "Failed to tear down unused virtnodes!\n";
		    return 1;
		}
		TBDebugTimeStamp("vnode_setup finished");
		
		if (system("nfree $pid $eid @virtnodes")) {
		    print "Failed to nfree unused virtnodes!\n";
		    return 1;
		}
	    }
	    if (@physnodes) {
		if (system("nfree $pid $eid @physnodes")) {
		    print "Failed to nfree unused physnodes!\n";
		    return 1;
		}
	    }
	}
    }

711 712 713 714 715 716
    # Exit here if we are testing.
    if ($TESTMODE) {
	print "Testing run - Stopping here.\n";
	return 0;
    }

717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
    #
    # Handle tarballs - we might need to fetch some from URLs if the user
    # asked for that.
    #
    print "Fetching tarballs and RPMs (if any) ...\n";
    TBDebugTimeStamp("tarfiles_setup started");

    if (system("tarfiles_setup $pid $eid")) {
	#
	# No recovery for now - what would we do?
	#
	print STDERR "*** Failed to set up tarballs.\n";
	return 1;
    }
    TBDebugTimeStamp("tarfiles_setup finished");

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
    #
    # If there are any Plab dslice nodes in the experiment, create the
    # dslice now
    #
    if ($type > UPDATE_RECOVER) {
	# Are there any Plab nodes?
	$db_result =
	    DBQueryFatal("select n.node_id from nodes as n ".
			 "left join node_types as nt on n.type = nt.type ".
			 "left join reserved as r on r.node_id = n.node_id ".
			 "where r.pid='$pid' and r.eid='$eid' ".
			 " and nt.isplabdslice = 1");

	if ($db_result->numrows) {
	    # Does slice already exist?
	    $db_result =
		DBQueryFatal("select slicename from plab_slices ".
			     "where pid='$pid' and eid='$eid'");

	    if (! $db_result->numrows) {
		my @plabnodes = ();
		
		while (my ($node) = $db_result->fetchrow_array()) {
		    push(@plabnodes, $node);
		}
		
		print "Creating Planetlab slice.\n";
		TBDebugTimeStamp("plabslice create started");
761
		if (system("plabslice create $pid $eid")) {
762 763 764 765 766 767 768 769
		    print STDERR "*** Failed to create Plab dslice\n";
		    return 3;
		}
		TBDebugTimeStamp("plabslice alloc finished");
	    }
	}
    }

770
    # Check cancel flag before continuing. No retry, 
771
    TBGetCancelFlag($pid, $eid, \$canceled);
772 773 774
    return 1
	if ($canceled);

775 776 777 778 779 780 781 782 783 784 785 786 787
    #
    # These things need to get started before the nodes come up, so we'll
    # do them before the os_setup. Everything else can done in parallel with
    # os_setup. (Actually, these probably can too, since they should finish
    # long before the nodes reboot, but better safe than sorry)
    #
    print "Setting up mountpoints.\n";
    TBDebugTimeStamp("mountpoints started");
    if (system("exports_setup")) {
	print STDERR "*** Failed to setup mountpoints.\n";
	return 1;
    }
    TBDebugTimeStamp("mountpoints finished");
Chad Barb's avatar
Chad Barb committed
788

789 790 791 792 793 794
    TBDebugTimeStamp("named started");
    print "Setting up named maps.\n";
    if (system("named_setup")) {
	print STDERR "*** WARNING: Failed to add node names to named map.\n";
	#
	# This is a non-fatal error.
Chad Barb's avatar
Chad Barb committed
795
	#
796 797
    }
    TBDebugTimeStamp("named finished");
Chad Barb's avatar
Chad Barb committed
798

799
    # Check cancel flag before continuing. No retry, 
800
    TBGetCancelFlag($pid, $eid, \$canceled);
801 802
    return 1
	if ($canceled);
Chad Barb's avatar
Chad Barb committed
803

804 805 806 807 808 809 810 811
    #
    # Setup any control-net firewall.
    # This must be done before reloading and rebooting nodes.
    #
    if ($firewalled && doFW($pid, $eid, FWSETUP)) {
	return 1;
    }

Chad Barb's avatar
Chad Barb committed
812 813
    #
    # If user specified -reboot to update,
814
    # and we are successfully performing the update,
815
    # then mark all nodes in experiment so os_setup will reboot them.
Chad Barb's avatar
Chad Barb committed
816
    #
817 818 819
    if (($type == UPDATE) &&
	($updateReboot || $updateReconfig)) {
	print STDERR "Marking nodes for reboot/reconfig.\n";
Chad Barb's avatar
Chad Barb committed
820
	$db_result =
821 822 823
	    DBQueryFatal("select r.node_id,n.allocstate from reserved as r ".
			 "left join nodes as n on n.node_id=r.node_id ".
			 "where r.pid='$pid' and r.eid='$eid'");
Chad Barb's avatar
Chad Barb committed
824

825 826 827 828 829 830 831 832
	while (my ($node,$allocstate) = $db_result->fetchrow_array) {
	    #
	    # If the node is INIT_CLEAN, leave it alone. It will still get
	    # rebooted, but will not falsely be tagged as dirty. This is
	    # important for vnodes too, where INIT_CLEAN indicated the vnode
	    # does not even exist yet (plab nodes).
	    #
	    if ($allocstate ne TBDB_ALLOCSTATE_RES_INIT_CLEAN()) {
833 834 835 836
		TBSetNodeAllocState($node,
				    ($updateReboot ?
				     TBDB_ALLOCSTATE_RES_INIT_DIRTY() :
				     TBDB_ALLOCSTATE_RES_RECONFIG()));
837
	    }
Chad Barb's avatar
Chad Barb committed
838 839 840
	}
    }

841 842 843 844 845
    #
    # Since it'll take a while for the nodes to reboot, we'll start now, and
    # wait for the os_setup to finish, down below
    #
    print "Resetting OS and rebooting.\n";
846
    TBDebugTimeStamp("launching os_setup");
847 848 849 850 851 852
    if (!($os_setup_pid = fork())) { 
	exec("os_setup $pid $eid") or return 1;
    } elsif ($os_setup_pid == -1) {
	print STDERR "*** Fork failed.\n";
	return 1;
    }
Chad Barb's avatar
Chad Barb committed
853

854
    #
855 856 857 858 859
    # XXX
    # Don't add any steps between here and the waitpid() call below
    # without verifying that 1) It's OK for nodes to come up before
    # the step has completed and 2) It's OK for the command to run in
    # parallel with os_setup (no DB dependencies, etc.)
860 861 862 863 864 865 866 867 868
    #

    print "Setting up VLANs.\n";
    TBDebugTimeStamp("snmpit started");
    if (system("snmpit -t $pid $eid")) {
	print STDERR "*** Failed to set up VLANs.\n";
	return 1;
    }
    TBDebugTimeStamp("snmpit finished");
Chad Barb's avatar
Chad Barb committed
869

870 871 872 873
    #
    # An error now means that the VLANS need to be cleaned up.
    #
    $cleanvlans = 1;
Chad Barb's avatar
Chad Barb committed
874

875 876
    print "Setting up email lists.\n";
    TBDebugTimeStamp("genelists started");
877
    if (system("genelists -t")) {
878 879 880 881 882 883
	print STDERR "*** WARNING: Failed to update email lists.\n";
	#
	# This is a non-fatal error.
	# 
    }
    TBDebugTimeStamp("genelists finished");
Chad Barb's avatar
Chad Barb committed
884

885 886 887 888 889 890 891 892 893 894 895 896 897 898
    #
    # Don't clear port counters on UPDATE.
    # (XXX should clear new nodes' port counters.)

    if ($type >= RETRY) {
	print "Clearing port counters.\n";
	TBDebugTimeStamp("portstats started");
	if (system("portstats -z -a -q $pid $eid")) {
	    print STDERR "*** WARNING: Failed to clear port counters.\n";
	    #
	    # This is a non-fatal error.
	    # 
	}
	TBDebugTimeStamp("portstats finished");
899
    }
Chad Barb's avatar
Chad Barb committed
900

901 902 903 904 905 906 907 908 909
    #
    # OK, let's see how that os_setup did
    #
    $kid = waitpid($os_setup_pid,0);
    if ($kid == $os_setup_pid) {
	undef $os_setup_pid; # Make sure doswapout() doesn't wait for it.
	if ($CHILD_ERROR) {
	    print STDERR "*** Failed to reset OS and reboot nodes.\n";
	    #
910 911
	    # Use returncode from os_setup process to
	    # set global $retry flag, indicating to caller
912 913 914
	    # that it may be beneficial to attempt
	    # a doSwapin() again.
	    #
915
            if (($CHILD_ERROR >> 8) == 1) {
Chad Barb's avatar
Chad Barb committed
916
		return 3;
917 918
	    } else {
		print STDERR "Not retrying due to error type.\n";
Chad Barb's avatar
Chad Barb committed
919
		return 1;
920
	    }
921 922 923 924 925 926 927
	}
    } else {
	undef $os_setup_pid;
	print STDERR "*** Error waiting for os_setup to finish.\n";
	return 1;
    }
    TBDebugTimeStamp("os_setup finished");
Chad Barb's avatar
Chad Barb committed
928

929 930 931 932
    #
    # Okay, start the event system now that we know all the nodes have
    # rebooted (os_setup is done). This only takes a moment (puts itself
    # in the background), so its not enough of a delay to worry about.
933 934
    # Don't do this during an update, since we didn't kill the 
    # event system previously, so starting it again will fail!
935
    # 
936
    if (! ($DISABLE_EVENTS || $elabinelab)) {
937 938
	if ( $update_Eventsys_restart || 
	    ($type != UPDATE && $type != UPDATE_RECOVER) ) {
939 940 941 942 943 944 945
	    print "Starting the event system.\n";
	    TBDebugTimeStamp("eventsys_control started");
	    if (system("eventsys_control start $pid $eid")) {
		print STDERR "*** Failed to start the event system.\n";
		return 1;
	    }
	    TBDebugTimeStamp("eventsys_control finished");
946 947
	}
    }
Chad Barb's avatar
Chad Barb committed
948

949 950 951 952 953 954 955 956 957 958 959 960 961
    #
    # ElabinElab setup. This might not be the right place for this!
    #
    if ($elabinelab && !$TESTMODE &&  $type == REAL) {
	print "Setting up elabinelab. This could take a while!\n";
	TBDebugTimeStamp("elabinelab setup started");
	if (system("elabinelab $pid $eid")) {
	    print STDERR "*** Failed to setup elabinelab!\n";
	    return 1;
	}
	TBDebugTimeStamp("elabinelab setup finished");
    }

962 963
    return 0;
}
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123

#
# Setup and teardown experiment firewall.
#
# XXX note that right now, we just setup the switch infrastructure
# first, and then just let everything else go.  Firewalled nodes will
# not boot until the firewall is up since the VLAN is isolated til then.
# The firewall will boot ok since it still talks to the real control net.
#
# XXX for tearing down firewalls, we assume that nodes have been "cleansed"
# and it is safe to put ports back into the default control net VLAN.
#
sub doFW($$$) {
    my ($pid, $eid, $action) = @_;
    my ($fwnode, $fwvlanname, $fwvlan, $fwport, $fwvid);

    #
    # See if there is a firewall, fetching node/VLAN info if so.
    # If not, we are all done.
    #
    if (!TBExptFirewall($pid, $eid, \$fwnode, \$fwvid, \$fwvlan)) {
	return 0;
    }

    if ($action == FWSETUP) {
	$fwvid = TBGetUniqueIndex("cnet_vlanid");

	print "Setting up control net firewall.\n";
    } else {
	print "Tearing down control net firewall.\n";

	# Prior setup didn't succeed, nothing to do
	if (!defined($fwvid)) {
	    return 0;
	}
    }

    # XXX vlanid in the DB is currently an int, we need a more unique name
    $fwvlanname = "fw$fwvid";

    #
    # Find all the experiment nodes and their control interface switch ports
    #
    # XXX this may be replaced by a call to SNMPIT that just specifies
    # the pid/eid.  In that case someone else will first have to poplulate
    # the vlans table with this same info. 
    #
    my $db_result =
	DBQueryFatal("SELECT r.node_id,w.card1 ".
		     "  FROM wires AS w, reserved AS r ".
		     "WHERE r.node_id=w.node_id1 AND r.pid='$pid' ".
		     "  AND r.eid='$eid' AND w.type='Control'");

    my $portlist = "";
    while (my ($node,$cif) = $db_result->fetchrow_array()) {
	if ($node eq $fwnode) {
	    $fwport = "$node:$cif";
	} else {
	    $portlist .= " $node:$cif";
	}
    }
    if (!defined($fwport)) {
	print STDERR "*** Firewall node '$fwnode' not found in $pid/$eid?!\n";
	return 0;
    }
    if ($portlist eq "") {
	print STDERR "*** No firewalled nodes in $pid/$eid?!\n";
	return 0;
    }

    #
    # XXX hack commands til we nail down the API
    #
    my $fwsetupstr1 = "snmpit $cnetstack -m $fwvlanname $portlist";
    my $fwsetupstr2 = "snmpit $cnetstack -T $fwport $cnetvlanname $fwvlanname";
    my $fwtakedownstr1 = "snmpit $cnetstack -m $cnetvlanname $portlist";
    my $fwtakedownstr2 = "snmpit $cnetstack -o $fwvlanname";
    my $fwtakedownstr3 = "snmpit $cnetstack -U $fwport";
    my $fwtakedownstr4 = "snmpit $cnetstack -m $cnetvlanname $fwport";

    if (0) {
    # XXX debug fer now
    TBDebugTimeStamp("    setup1: $fwsetupstr1");
    TBDebugTimeStamp("    setup2: $fwsetupstr2");
    TBDebugTimeStamp(" teardown1: $fwtakedownstr1");
    TBDebugTimeStamp(" teardown2: $fwtakedownstr2");
    TBDebugTimeStamp(" teardown3: $fwtakedownstr3");
    TBDebugTimeStamp(" teardown4: $fwtakedownstr4");
    if ($action == FWSETUP) {
	my $lan = 100 + $fwvid;
	$fwsetupstr1    = "/bin/echo VLAN \#$lan on cisco2";
	$fwsetupstr2    = "true";
    } else {
	$fwtakedownstr1 = "true";
	$fwtakedownstr2 = "true";
	$fwtakedownstr3 = "true";
	$fwtakedownstr4 = "true";
    }
    }

    if ($action == FWSETUP) {
	TBDebugTimeStamp("snmpit firewall setup: VLAN");
	my $snmpit_out = `$fwsetupstr1`;
	if ($? != 0 || $snmpit_out !~ /VLAN #(\d+) on /) {
	    print STDERR "*** Failed to setup Firewall control net VLAN.\n";
	    return 1;
	}
	my $fwvlan = $1;

	TBDebugTimeStamp("snmpit firewall setup: trunk");
	if (system($fwsetupstr2)) {
	    print STDERR "*** Failed to setup Firewall trunk on port $fwport.\n";
	    if (system($fwtakedownstr1)) {
		print STDERR
		    "*** Could not return $portlist to Control VLAN!\n";
	    }
	    if (system($fwtakedownstr2)) {
		print STDERR
		    "*** Could not destroy VLAN $fwvlanname ($fwvlan)!\n";
	    }
	    return 1;
	}
	TBDebugTimeStamp("snmpit firewall setup done");

	# Record VLAN info now that everything is done
	TBSetExptFirewallVlan($pid, $eid, $fwvid, $fwvlan);
    } else {
	TBDebugTimeStamp("snmpit firewall teardown: VLAN");
	my $failed = 0;
	if (system($fwtakedownstr1)) {
	    print STDERR
		"*** Could not return $portlist to Control VLAN!\n";
	    $failed = 1;
	}
	if (system($fwtakedownstr2)) {
	    print STDERR
		"*** Could not destroy VLAN $fwvlanname ($fwvlan)!\n";
	    $failed = 1;
	}
	TBDebugTimeStamp("snmpit firewall teardown: trunk");
	if (system($fwtakedownstr3)) {
	    print STDERR
		"*** Could not tear down trunk on $fwport!\n";
	    $failed = 1;
	}
	if (system($fwtakedownstr4)) {
	    print STDERR
		"*** Could not return $fwport to Control VLAN!\n";
	    $failed = 1;
	}
	if ($failed) {
	    return 1;
	}
	TBDebugTimeStamp("snmpit firewall teardown done");

	# Clean VLAN info from DB
	TBSetExptFirewallVlan($pid, $eid, undef, undef);
    }
    return 0;
}