tbswap.in 29.1 KB
Newer Older
Chad Barb's avatar
 
Chad Barb committed
1 2 3 4
#!/usr/bin/perl -w

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

Chad Barb's avatar
 
Chad Barb committed
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).
Chad Barb's avatar
 
Chad Barb committed
15

Chad Barb's avatar
 
Chad Barb committed
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)
Chad Barb's avatar
 
Chad Barb committed
24 25 26

sub usage()
{
27
    print STDERR "Usage: $0 -force { in | out | update [-reboot] [-eventsys_restart] } pid eid\n";
Chad Barb's avatar
 
Chad Barb committed
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.
#
Chad Barb's avatar
 
Chad Barb committed
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";


Chad Barb's avatar
 
Chad Barb committed
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; }
Chad Barb's avatar
 
Chad Barb committed
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;
Chad Barb's avatar
 
Chad Barb committed
85 86
my $force  = 0;
my $errors = 0;
87
my $updatehosed = 0;
Chad Barb's avatar
 
Chad Barb committed
88
my $state;
89
my $canceled;
Chad Barb's avatar
 
Chad Barb committed
90 91
my $os_setup_pid;
my $cleanvlans;
92
my $nextState;
Chad Barb's avatar
 
Chad Barb committed
93 94

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

my $swapop = shift;	

Chad Barb's avatar
 
Chad Barb committed
101 102 103 104
if (!$swapop || 
    (($swapop ne "in") && 
     ($swapop ne "out") &&
     ($swapop ne "update"))) {
Chad Barb's avatar
 
Chad Barb committed
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;
Chad Barb's avatar
 
Chad Barb committed
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");
}

Chad Barb's avatar
 
Chad Barb committed
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");
Chad Barb's avatar
 
Chad Barb committed
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);
Chad Barb's avatar
 
Chad Barb committed
171
    }
172 173 174 175
    elsif ($swapop eq "out") {
	die("*** $0:\n".
	    "    Experiment should be SWAPPING. Currently $state.\n")
	    if ($state ne EXPTSTATE_SWAPPING);
Chad Barb's avatar
 
Chad Barb committed
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);
Chad Barb's avatar
 
Chad Barb committed
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");
}
Chad Barb's avatar
 
Chad Barb committed
188

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

Chad Barb's avatar
 
Chad Barb committed
194 195 196
#
# Do actual swapping
#
197 198 199 200 201
if ($swapop eq "out") {
    #
    # Swap out
    #
    $errors = doSwapout(REAL);
Chad Barb's avatar
 
Chad Barb committed
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);
Chad Barb's avatar
 
Chad Barb committed
223

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

226
    if ($errors) {
Chad Barb's avatar
 
Chad Barb committed
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;
Chad Barb's avatar
 
Chad Barb committed
233
    }
234
    else {
Chad Barb's avatar
 
Chad Barb committed
235
	#
236
	# Phase Two -- swap experiment back in.
Chad Barb's avatar
 
Chad Barb committed
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
	    }
Chad Barb's avatar
 
Chad Barb committed
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--;
Chad Barb's avatar
 
Chad Barb committed
304

305 306
	print STDERR "Cleaning up after errors; will try again.\n";
	doSwapout(RETRY);
Chad Barb's avatar
 
Chad Barb committed
307

308 309
	print STDERR "Trying again...\n";
	$errors = doSwapin(RETRY);
Chad Barb's avatar
 
Chad Barb committed
310
    }
311 312
    if ($errors || $canceled) {
	print STDERR "Cleaning up after " .
313
	    ($canceled ? "cancelation" : "errors") . ".\n";
314
	doSwapout(CLEANUP);
Chad Barb's avatar
 
Chad Barb committed
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";
Chad Barb's avatar
 
Chad Barb committed
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));
Chad Barb's avatar
 
Chad Barb committed
327
}
328
print "Successfully finished swap-$swapop for $pid/$eid. " .TBTimeStamp()."\n";
329 330
TBDebugTimeStamp("tbswap $swapop finished (succeeded)");
exit(0);
Chad Barb's avatar
 
Chad Barb committed
331 332 333 334

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

##
Chad Barb's avatar
Chad Barb committed
335
#
Chad Barb's avatar
 
Chad Barb committed
336 337
# doSwapout - Swaps experiment out.
#
Chad Barb's avatar
Chad Barb committed
338
#             If in REAL or CLEANUP,
Chad Barb's avatar
 
Chad Barb committed
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,
Chad Barb's avatar
 
Chad Barb committed
343 344 345 346 347 348
#             only nodes not in RES_READY will be freed.
#
#             Returns 0 on success, >0 on failure.
#
##

Chad Barb's avatar
 
Chad Barb committed
349 350
sub doSwapout($) {
    my $type = shift; # REAL==4, CLEANUP==3, RETRY==2, UPDATE==1.
Chad Barb's avatar
 
Chad Barb committed
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

Chad Barb's avatar
 
Chad Barb committed
363
    if (! $TESTMODE) { 
364 365 366
	if (! ($DISABLE_EVENTS || $elabinelab)) {
	    if ($type >= RETRY ||
		($update_Eventsys_restart && $type == UPDATE) ) {
Chad Barb's avatar
 
Chad Barb committed
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;
		}
Chad Barb's avatar
 
Chad Barb committed
372 373 374
	    }
	}
	#
Chad Barb's avatar
Chad Barb committed
375
	# Clean up any VLANs in experiment.
Chad Barb's avatar
 
Chad Barb committed
376
	#
Chad Barb's avatar
Chad Barb committed
377 378 379 380 381 382 383
	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;
Chad Barb's avatar
 
Chad Barb committed
384
	}
Chad Barb's avatar
Chad Barb committed
385
	TBDebugTimeStamp("snmpit finished");
386
    }
Chad Barb's avatar
Chad Barb committed
387

388 389 390
    if ($type >= CLEANUP) {
	#
	# We're not attempting a retry;
Chad Barb's avatar
 
Chad Barb committed
391
	#
392
	# Stop all of the vnodes.
Chad Barb's avatar
 
Chad Barb committed
393
	#
394
	if (! $TESTMODE) { 	
Chad Barb's avatar
 
Chad Barb committed
395 396 397 398 399 400 401
	    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");
Chad Barb's avatar
 
Chad Barb committed
402 403
	}

404 405 406 407 408 409 410 411 412 413 414 415
	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);
	}

Chad Barb's avatar
 
Chad Barb committed
416 417
	#
	# remove all nodes from the experiment.
Chad Barb's avatar
 
Chad Barb committed
418
	# (nfree will send them to RES_FREE_DIRTY)
Chad Barb's avatar
 
Chad Barb committed
419 420 421 422 423 424 425 426
	#
	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");
Chad Barb's avatar
 
Chad Barb committed
427 428 429 430 431

	#
	# Since this is an actual swapout, 
	# reset our count of swap out nag emails sent.
	#
432
	DBQueryWarn("update experiments set swap_requests='',sim_reswap_count='0' ".
433
		    "where eid='$eid' and pid='$pid'");
Chad Barb's avatar
 
Chad Barb committed
434 435
    } else {
	#
Chad Barb's avatar
 
Chad Barb committed
436
	# $type == RETRY or $type == UPDATE.
Chad Barb's avatar
 
Chad Barb committed
437 438
	# 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
439
	# (nfree will send deallocated nodes to RES_FREE_DIRTY)
Chad Barb's avatar
 
Chad Barb committed
440
	#
441 442 443 444 445 446 447 448
	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 ".
Chad Barb's avatar
 
Chad Barb committed
449 450
			 "where rv.pid='$pid' and rv.eid='$eid'");

451
	while (my ($node,$allocstate,$isvirt) = $db_result->fetchrow_array) {
Chad Barb's avatar
 
Chad Barb committed
452
	    if ($allocstate ne TBDB_ALLOCSTATE_RES_READY()) {
453 454 455 456 457 458
		if ($isvirt) {
		    push(@failedvnodes, $node);
		}
		else {
		    push(@failedpnodes, $node);
		}
Chad Barb's avatar
 
Chad Barb committed
459 460 461
	    }
	}

462 463 464 465 466 467 468 469 470 471 472 473
	#
	# 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");
	}
Chad Barb's avatar
 
Chad Barb committed
474

475 476 477 478
	#
	# Release all failed nodes.
	# 
	if (@failedpnodes > 0 || @failedvnodes > 0) {
479 480
	    print STDERR "Freeing failed nodes.\n";
	    
Chad Barb's avatar
 
Chad Barb committed
481
	    TBDebugTimeStamp("nfree started");
Chad Barb's avatar
 
Chad Barb committed
482 483 484 485 486
	    #
	    # 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.
	    #
487 488
	    if (system("nfree -x $pid $eid " .
		       join(" ", (@failedpnodes, @failedvnodes)))) {
Chad Barb's avatar
 
Chad Barb committed
489 490 491 492 493 494 495
		print STDERR "*** Could not free nodes.\n";
		$swapout_errors = 1;
	    }
	    TBDebugTimeStamp("nfree finished");
	}
    }

496
    if (! $TESTMODE) {
497 498 499 500 501 502 503 504 505 506 507 508
	#
	# Restart DHCPD as soon as possible after freeing the nodes; they
	# are going into a reload, so DHCPD better be ready for them!
	# 
	if ($elabinelab) {
	    print "Regenerating DHCPD config file and restarting daemon.\n";
	    if (system("dhcpd_makeconf -i -r")) {
		print STDERR "*** Failed to reconfig/restart DHCPD.\n";
		$swapout_errors = 1;
	    }
	}

509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531
	#
	# 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");
532
		if (system("plabslice destroy $pid $eid")) {
533 534 535 536 537 538 539 540
		    print STDERR "*** Failed to destroy Plab dslice\n";
		    $swapout_errors = 1;
		}
		TBDebugTimeStamp("plabslice destroy finished");
	    }
	}
    }

Chad Barb's avatar
 
Chad Barb committed
541 542 543 544 545 546 547 548
    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
Chad Barb's avatar
 
Chad Barb committed
549
	# not a failed swapin(cleanup), update, or retry.
Chad Barb's avatar
 
Chad Barb committed
550
	#
Chad Barb's avatar
 
Chad Barb committed
551
	if ($type == REAL) {
Chad Barb's avatar
 
Chad Barb committed
552 553 554 555 556 557 558
	    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
559

Chad Barb's avatar
 
Chad Barb committed
560 561 562 563
	#
	# Resetting named maps and email lists is fast and idempotent,
	# so whatever.
	#
Chad Barb's avatar
 
Chad Barb committed
564 565 566 567 568 569
	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
570

Chad Barb's avatar
 
Chad Barb committed
571 572
	print "Resetting email lists.\n";
	TBDebugTimeStamp("genelists started");
573
	if (system("genelists -t")) {
Chad Barb's avatar
 
Chad Barb committed
574 575 576 577 578
	    print "*** WARNING: Failed to reset email lists.\n";
	}
	TBDebugTimeStamp("genelists finished");
    }

Chad Barb's avatar
 
Chad Barb committed
579
    #
580 581 582
    # Wipe the DB clean except during UPDATE or RETRY. In those
    #    cases, assign_wrapper will reset the DB after reading
    #    the info.
Chad Barb's avatar
 
Chad Barb committed
583
    #
584 585 586 587
    if ( $type >= CLEANUP ) {
	print STDERR "Resetting DB.\n";
	TBExptRemovePhysicalState( $pid, $eid );
    }
Chad Barb's avatar
 
Chad Barb committed
588 589 590 591 592

    return $swapout_errors;
}

##
Chad Barb's avatar
Chad Barb committed
593
#
Chad Barb's avatar
 
Chad Barb committed
594 595
# doSwapin - Swaps experiment in.
#
Chad Barb's avatar
Chad Barb committed
596 597 598 599 600
#            Returns:
#              0 - successful swapin
#              1 - failed swapin; cleanup required.
#              3 - failed swapin; cleanup required; can retry.
#              7 - failed swapin; assign failed; no cleanup.
Chad Barb's avatar
 
Chad Barb committed
601 602
##

Chad Barb's avatar
 
Chad Barb committed
603
sub doSwapin($) {
Chad Barb's avatar
Chad Barb committed
604
    my $type = shift; # REAL==4, RETRY==2, UPDATE==1, UPDATE_RECOVER=0. 
Chad Barb's avatar
 
Chad Barb committed
605

Chad Barb's avatar
 
Chad Barb committed
606 607 608 609 610
    #
    # assign_wrapper does all the virtual to physical mapping 
    # and updating the DB state.
    #

Chad Barb's avatar
Chad Barb committed
611 612 613 614 615
    if ($type > UPDATE_RECOVER) {
	print "Mapping to physical reality ...\n";
	TBDebugTimeStamp("assign_wrapper started");

	#
616 617 618 619
	# 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
620 621
	#
	my $exitcode;
622 623 624
	my $wrapper = "assign_wrapper -u";
	$wrapper .= " -f"
	    if ($type == RETRY);
625
	
626
	if (system("$wrapper $pid $eid")) {
627 628 629 630
	    $exitcode = $? >> 8;

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

631 632
	    # Wrapper sets this bit when recovery is possible.
	    if ($exitcode & 64) {
633
		# We can recover. 
Chad Barb's avatar
Chad Barb committed
634
		return 7;
635 636
	    }
	    else {
637
		# No recovery, no retry.
Chad Barb's avatar
Chad Barb committed
638 639 640 641
		return 1;
	    }
	}
	TBDebugTimeStamp("assign_wrapper finished");
Chad Barb's avatar
 
Chad Barb committed
642

Chad Barb's avatar
Chad Barb committed
643 644
	print "Mapped to physical reality!\n";
    }
Chad Barb's avatar
 
Chad Barb committed
645

646
    # Check cancel flag before continuing. No retry, 
647
    TBGetCancelFlag($pid, $eid, \$canceled);
648 649 650
    return 1
	if ($canceled);

651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688
    #
    # 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");
		
689
		if (system("vnode_setup -k $pid $eid @virtnodes")) {
690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708
		    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;
		}
	    }
	}
    }

Chad Barb's avatar
 
Chad Barb committed
709 710 711 712 713 714
    # Exit here if we are testing.
    if ($TESTMODE) {
	print "Testing run - Stopping here.\n";
	return 0;
    }

715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730
    #
    # 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");

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
    #
    # 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");
759
		if (system("plabslice create $pid $eid")) {
760 761 762 763 764 765 766 767
		    print STDERR "*** Failed to create Plab dslice\n";
		    return 3;
		}
		TBDebugTimeStamp("plabslice alloc finished");
	    }
	}
    }

768
    # Check cancel flag before continuing. No retry, 
769
    TBGetCancelFlag($pid, $eid, \$canceled);
770 771 772
    return 1
	if ($canceled);

Chad Barb's avatar
 
Chad Barb committed
773 774 775 776 777 778 779 780 781 782 783 784 785
    #
    # 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
786

Chad Barb's avatar
 
Chad Barb committed
787 788 789 790 791 792
    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
793
	#
Chad Barb's avatar
 
Chad Barb committed
794 795
    }
    TBDebugTimeStamp("named finished");
Chad Barb's avatar
Chad Barb committed
796

797
    # Check cancel flag before continuing. No retry, 
798
    TBGetCancelFlag($pid, $eid, \$canceled);
799 800
    return 1
	if ($canceled);
Chad Barb's avatar
Chad Barb committed
801

802 803 804 805 806 807 808 809
    #
    # 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
810 811
    #
    # If user specified -reboot to update,
Chad Barb's avatar
 
Chad Barb committed
812
    # and we are successfully performing the update,
813
    # then mark all nodes in experiment so os_setup will reboot them.
Chad Barb's avatar
Chad Barb committed
814
    #
815 816 817
    if (($type == UPDATE) &&
	($updateReboot || $updateReconfig)) {
	print STDERR "Marking nodes for reboot/reconfig.\n";
Chad Barb's avatar
Chad Barb committed
818
	$db_result =
819 820 821
	    DBQueryFatal("select r.node_id,n.allocstate from reserved as r ".
			 "left join nodes as n on n.node_id=r.node_id ".
			 "where r.pid='$pid' and r.eid='$eid'");
Chad Barb's avatar
Chad Barb committed
822

823 824 825 826 827 828 829 830
	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()) {
831 832 833 834
		TBSetNodeAllocState($node,
				    ($updateReboot ?
				     TBDB_ALLOCSTATE_RES_INIT_DIRTY() :
				     TBDB_ALLOCSTATE_RES_RECONFIG()));
835
	    }
Chad Barb's avatar
Chad Barb committed
836 837 838
	}
    }

Chad Barb's avatar
 
Chad Barb committed
839 840 841 842 843
    #
    # 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";
844
    TBDebugTimeStamp("launching os_setup");
Chad Barb's avatar
 
Chad Barb committed
845 846 847 848 849 850
    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
851

Chad Barb's avatar
 
Chad Barb committed
852
    #
853 854 855 856 857
    # 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.)
Chad Barb's avatar
 
Chad Barb committed
858 859 860 861 862 863 864 865 866
    #

    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
867

Chad Barb's avatar
 
Chad Barb committed
868 869 870 871
    #
    # An error now means that the VLANS need to be cleaned up.
    #
    $cleanvlans = 1;
Chad Barb's avatar
Chad Barb committed
872

Chad Barb's avatar
 
Chad Barb committed
873 874
    print "Setting up email lists.\n";
    TBDebugTimeStamp("genelists started");
875
    if (system("genelists -t")) {
Chad Barb's avatar
 
Chad Barb committed
876 877 878 879 880 881
	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
882

Chad Barb's avatar
 
Chad Barb committed
883 884 885 886 887 888 889 890 891 892 893 894 895 896
    #
    # 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");
Chad Barb's avatar
 
Chad Barb committed
897
    }
Chad Barb's avatar
Chad Barb committed
898

Chad Barb's avatar
 
Chad Barb committed
899 900 901 902 903 904 905 906 907
    #
    # 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";
	    #
Chad Barb's avatar
 
Chad Barb committed
908 909
	    # Use returncode from os_setup process to
	    # set global $retry flag, indicating to caller
Chad Barb's avatar
 
Chad Barb committed
910 911 912
	    # that it may be beneficial to attempt
	    # a doSwapin() again.
	    #
Chad Barb's avatar
 
Chad Barb committed
913
            if (($CHILD_ERROR >> 8) == 1) {
Chad Barb's avatar
Chad Barb committed
914
		return 3;
Chad Barb's avatar
 
Chad Barb committed
915 916
	    } else {
		print STDERR "Not retrying due to error type.\n";
Chad Barb's avatar
Chad Barb committed
917
		return 1;
Chad Barb's avatar
 
Chad Barb committed
918
	    }
Chad Barb's avatar
 
Chad Barb committed
919 920 921 922 923 924 925
	}
    } 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
926

Chad Barb's avatar
 
Chad Barb committed
927 928 929 930
    #
    # 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.
Chad Barb's avatar
 
Chad Barb committed
931 932
    # Don't do this during an update, since we didn't kill the 
    # event system previously, so starting it again will fail!
Chad Barb's avatar
 
Chad Barb committed
933
    # 
934
    if (! ($DISABLE_EVENTS || $elabinelab)) {
935 936
	if ( $update_Eventsys_restart || 
	    ($type != UPDATE && $type != UPDATE_RECOVER) ) {
Chad Barb's avatar
 
Chad Barb committed
937 938 939 940 941 942 943
	    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");
Chad Barb's avatar
 
Chad Barb committed
944 945
	}
    }
Chad Barb's avatar
Chad Barb committed
946

947 948 949 950 951 952 953 954 955 956 957 958 959
    #
    # 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");
    }

Chad Barb's avatar
 
Chad Barb committed
960 961
    return 0;
}
962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 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

#
# 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;
}