2 # -*- mode: perl; perl-indent-level: 2; indent-tabs-mode: nil; -*-
6 crunch-job: Execute job steps, save snapshots as requested, collate output.
10 Obtain job details from Arvados, run tasks on compute nodes (typically
11 invoked by scheduler on controller):
13 crunch-job --job x-y-z --git-dir /path/to/repo/.git
15 Obtain job details from command line, run tasks on local machine
16 (typically invoked by application or developer on VM):
18 crunch-job --job '{"script_version":"/path/to/working/tree","script":"scriptname",...}'
20 crunch-job --job '{"repository":"https://github.com/curoverse/arvados.git","script_version":"master","script":"scriptname",...}'
28 If the job is already locked, steal the lock and run it anyway.
32 Path to a .git directory (or a git URL) where the commit given in the
33 job's C<script_version> attribute is to be found. If this is I<not>
34 given, the job's C<repository> attribute will be used.
38 Arvados API authorization token to use during the course of the job.
42 Do not clear per-job/task temporary directories during initial job
43 setup. This can speed up development and debugging when running jobs
48 UUID of the job to run, or a JSON-encoded job resource without a
49 UUID. If the latter is given, a new job object will be created.
53 =head1 RUNNING JOBS LOCALLY
55 crunch-job's log messages appear on stderr along with the job tasks'
56 stderr streams. The log is saved in Keep at each checkpoint and when
59 If the job succeeds, the job's output locator is printed on stdout.
61 While the job is running, the following signals are accepted:
65 =item control-C, SIGINT, SIGQUIT
67 Save a checkpoint, terminate any job tasks that are running, and stop.
71 Save a checkpoint and continue.
75 Refresh node allocation (i.e., check whether any nodes have been added
76 or unallocated) and attributes of the Job record that should affect
77 behavior (e.g., cancel job if cancelled_at becomes non-nil).
85 use POSIX ':sys_wait_h';
86 use POSIX qw(strftime);
87 use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);
91 use Digest::MD5 qw(md5_hex);
97 use File::Path qw( make_path remove_tree );
99 use constant TASK_TEMPFAIL => 111;
100 use constant EX_TEMPFAIL => 75;
101 use constant EX_RETRY_UNLOCKED => 93;
103 $ENV{"TMPDIR"} ||= "/tmp";
104 unless (defined $ENV{"CRUNCH_TMP"}) {
105 $ENV{"CRUNCH_TMP"} = $ENV{"TMPDIR"} . "/crunch-job";
106 if ($ENV{"USER"} ne "crunch" && $< != 0) {
107 # use a tmp dir unique for my uid
108 $ENV{"CRUNCH_TMP"} .= "-$<";
112 # Create the tmp directory if it does not exist
113 if ( ! -d $ENV{"CRUNCH_TMP"} ) {
114 make_path $ENV{"CRUNCH_TMP"} or die "Failed to create temporary working directory: " . $ENV{"CRUNCH_TMP"};
117 $ENV{"JOB_WORK"} = $ENV{"CRUNCH_TMP"} . "/work";
118 $ENV{"CRUNCH_INSTALL"} = "$ENV{CRUNCH_TMP}/opt";
119 $ENV{"CRUNCH_WORK"} = $ENV{"JOB_WORK"}; # deprecated
120 mkdir ($ENV{"JOB_WORK"});
129 my $docker_bin = "docker.io";
130 GetOptions('force-unlock' => \$force_unlock,
131 'git-dir=s' => \$git_dir,
132 'job=s' => \$jobspec,
133 'job-api-token=s' => \$job_api_token,
134 'no-clear-tmp' => \$no_clear_tmp,
135 'resume-stash=s' => \$resume_stash,
136 'docker-bin=s' => \$docker_bin,
139 if (defined $job_api_token) {
140 $ENV{ARVADOS_API_TOKEN} = $job_api_token;
143 my $have_slurm = exists $ENV{SLURM_JOB_ID} && exists $ENV{SLURM_NODELIST};
148 $main::ENV{CRUNCH_DEBUG} = 1;
152 $main::ENV{CRUNCH_DEBUG} = 0;
155 my $arv = Arvados->new('apiVersion' => 'v1');
164 if ($jobspec =~ /^[-a-z\d]+$/)
166 # $jobspec is an Arvados UUID, not a JSON job specification
167 $Job = api_call("jobs/get", uuid => $jobspec);
172 $local_job = JSON::decode_json($jobspec);
176 # Make sure our workers (our slurm nodes, localhost, or whatever) are
177 # at least able to run basic commands: they aren't down or severely
180 if (($Job || $local_job)->{docker_image_locator}) {
181 $cmd = [$docker_bin, 'ps', '-q'];
183 Log(undef, "Sanity check is `@$cmd`");
184 srun(["srun", "--nodes=\Q$ENV{SLURM_NNODES}\E", "--ntasks-per-node=1"],
188 Log(undef, "Sanity check failed: ".exit_status_s($?));
191 Log(undef, "Sanity check OK");
194 my $User = api_call("users/current");
197 if (!$force_unlock) {
198 # Claim this job, and make sure nobody else does
199 eval { api_call("jobs/lock", uuid => $Job->{uuid}); };
201 Log(undef, "Error while locking job, exiting ".EX_TEMPFAIL);
210 map { croak ("No $_ specified") unless $local_job->{$_} }
211 qw(script script_version script_parameters);
214 $local_job->{'is_locked_by_uuid'} = $User->{'uuid'};
215 $local_job->{'started_at'} = gmtime;
216 $local_job->{'state'} = 'Running';
218 $Job = api_call("jobs/create", job => $local_job);
220 $job_id = $Job->{'uuid'};
222 my $keep_logfile = $job_id . '.log.txt';
223 log_writer_start($keep_logfile);
225 $Job->{'runtime_constraints'} ||= {};
226 $Job->{'runtime_constraints'}->{'max_tasks_per_node'} ||= 0;
227 my $max_ncpus = $Job->{'runtime_constraints'}->{'max_tasks_per_node'};
229 my $gem_versions = `gem list --quiet arvados-cli 2>/dev/null`;
231 $gem_versions =~ s/^arvados-cli \(/ with arvados-cli Gem version(s) /;
232 chomp($gem_versions);
233 chop($gem_versions); # Closing parentheses
238 "running from " . ((-e $0) ? realpath($0) : "stdin") . $gem_versions);
240 Log (undef, "check slurm allocation");
243 # Should use $ENV{SLURM_TASKS_PER_NODE} instead of sinfo? (eg. "4(x3),2,4(x2)")
247 my $localcpus = 0 + `grep -cw ^processor /proc/cpuinfo` || 1;
248 push @sinfo, "$localcpus localhost";
250 if (exists $ENV{SLURM_NODELIST})
252 push @sinfo, `sinfo -h --format='%c %N' --nodes=\Q$ENV{SLURM_NODELIST}\E`;
256 my ($ncpus, $slurm_nodelist) = split;
257 $ncpus = $max_ncpus if $max_ncpus && $ncpus > $max_ncpus;
260 while ($slurm_nodelist =~ s/^([^\[,]+?(\[.*?\])?)(,|$)//)
263 if ($nodelist =~ /\[((\d+)(-(\d+))?(,(\d+)(-(\d+))?)*)\]/)
266 foreach (split (",", $ranges))
279 push @nodelist, map {
281 $n =~ s/\[[-,\d]+\]/$_/;
288 push @nodelist, $nodelist;
291 foreach my $nodename (@nodelist)
293 Log (undef, "node $nodename - $ncpus slots");
294 my $node = { name => $nodename,
296 # The number of consecutive times a task has been dispatched
297 # to this node and failed.
299 # The number of consecutive times that SLURM has reported
300 # a node failure since the last successful task.
302 # Don't dispatch work to this node until this time
303 # (in seconds since the epoch) has passed.
305 foreach my $cpu (1..$ncpus)
307 push @slot, { node => $node,
311 push @node, @nodelist;
316 # Ensure that we get one jobstep running on each allocated node before
317 # we start overloading nodes with concurrent steps
319 @slot = sort { $a->{cpu} <=> $b->{cpu} } @slot;
322 $Job->update_attributes(
323 'tasks_summary' => { 'failed' => 0,
328 Log (undef, "start");
329 $SIG{'INT'} = sub { $main::please_freeze = 1; };
330 $SIG{'QUIT'} = sub { $main::please_freeze = 1; };
331 $SIG{'TERM'} = \&croak;
332 $SIG{'TSTP'} = sub { $main::please_freeze = 1; };
333 $SIG{'ALRM'} = sub { $main::please_info = 1; };
334 $SIG{'CONT'} = sub { $main::please_continue = 1; };
335 $SIG{'HUP'} = sub { $main::please_refresh = 1; };
337 $main::please_freeze = 0;
338 $main::please_info = 0;
339 $main::please_continue = 0;
340 $main::please_refresh = 0;
341 my $jobsteps_must_output_keys = 0; # becomes 1 when any task outputs a key
343 grep { $ENV{$1} = $2 if /^(NOCACHE.*?)=(.*)/ } split ("\n", $$Job{knobs});
344 $ENV{"CRUNCH_JOB_UUID"} = $job_id;
345 $ENV{"JOB_UUID"} = $job_id;
348 my @jobstep_todo = ();
349 my @jobstep_done = ();
350 my @jobstep_tomerge = ();
351 my $jobstep_tomerge_level = 0;
352 my $squeue_checked = 0;
353 my $latest_refresh = scalar time;
357 if (defined $Job->{thawedfromkey})
359 thaw ($Job->{thawedfromkey});
363 my $first_task = api_call("job_tasks/create", job_task => {
364 'job_uuid' => $Job->{'uuid'},
369 push @jobstep, { 'level' => 0,
371 'arvados_task' => $first_task,
373 push @jobstep_todo, 0;
379 must_lock_now("$ENV{CRUNCH_TMP}/.lock", "a job is already running here.");
382 my $build_script = handle_readall(\*DATA);
383 my $nodelist = join(",", @node);
384 my $git_tar_count = 0;
386 if (!defined $no_clear_tmp) {
387 # Clean out crunch_tmp/work, crunch_tmp/opt, crunch_tmp/src*
388 Log (undef, "Clean work dirs");
390 my $cleanpid = fork();
393 # Find FUSE mounts under $CRUNCH_TMP and unmount them.
394 # Then clean up work directories.
395 # TODO: When #5036 is done and widely deployed, we can limit mount's
396 # -t option to simply fuse.keep.
397 srun (["srun", "--nodelist=$nodelist", "-D", $ENV{'TMPDIR'}],
398 ['bash', '-ec', '-o', 'pipefail', 'mount -t fuse,fuse.keep | awk "(index(\$3, \"$CRUNCH_TMP\") == 1){print \$3}" | xargs -r -n 1 fusermount -u -z; sleep 1; rm -rf $JOB_WORK $CRUNCH_INSTALL $CRUNCH_TMP/task $CRUNCH_TMP/src* $CRUNCH_TMP/*.cid']);
403 last if $cleanpid == waitpid (-1, WNOHANG);
404 freeze_if_want_freeze ($cleanpid);
405 select (undef, undef, undef, 0.1);
408 Log(undef, "Clean work dirs: exit ".exit_status_s($?));
409 exit(EX_RETRY_UNLOCKED);
413 # If this job requires a Docker image, install that.
414 my ($docker_locator, $docker_stream, $docker_hash, $docker_limitmem, $dockeruserarg);
415 if ($docker_locator = $Job->{docker_image_locator}) {
416 ($docker_stream, $docker_hash) = find_docker_image($docker_locator);
419 croak("No Docker image hash found from locator $docker_locator");
421 $docker_stream =~ s/^\.//;
422 my $docker_install_script = qq{
423 if ! $docker_bin images -q --no-trunc --all | grep -qxF \Q$docker_hash\E; then
424 arv-get \Q$docker_locator$docker_stream/$docker_hash.tar\E | $docker_bin load
427 my $docker_pid = fork();
428 if ($docker_pid == 0)
430 srun (["srun", "--nodelist=" . join(',', @node)],
431 ["/bin/sh", "-ec", $docker_install_script]);
436 last if $docker_pid == waitpid (-1, WNOHANG);
437 freeze_if_want_freeze ($docker_pid);
438 select (undef, undef, undef, 0.1);
442 croak("Installing Docker image from $docker_locator exited "
446 # Determine whether this version of Docker supports memory+swap limits.
447 srun(["srun", "--nodelist=" . $node[0]],
448 ["/bin/sh", "-ec", "$docker_bin run --help | grep -qe --memory-swap="],
450 $docker_limitmem = ($? == 0);
452 # Find a non-root Docker user to use.
453 # Tries the default user for the container, then 'crunch', then 'nobody',
454 # testing for whether the actual user id is non-zero. This defends against
455 # mistakes but not malice, but we intend to harden the security in the future
456 # so we don't want anyone getting used to their jobs running as root in their
458 my @tryusers = ("", "crunch", "nobody");
459 foreach my $try_user (@tryusers) {
461 if ($try_user eq "") {
462 Log(undef, "Checking if container default user is not UID 0");
465 Log(undef, "Checking if user '$try_user' is not UID 0");
466 $try_user_arg = "--user=$try_user";
468 srun(["srun", "--nodelist=" . $node[0]],
470 "a=`$docker_bin run $try_user_arg $docker_hash id --user` && " .
474 $dockeruserarg = $try_user_arg;
475 if ($try_user eq "") {
476 Log(undef, "Container will run with default user");
478 Log(undef, "Container will run with $dockeruserarg");
484 if (!defined $dockeruserarg) {
485 croak("Could not find a user in container that is not UID 0 (tried default user, @tryusers) or there was a problem running 'id' in the container.");
488 if ($Job->{arvados_sdk_version}) {
489 # The job also specifies an Arvados SDK version. Add the SDKs to the
490 # tar file for the build script to install.
491 Log(undef, sprintf("Packing Arvados SDK version %s for installation",
492 $Job->{arvados_sdk_version}));
493 add_git_archive("git", "--git-dir=$git_dir", "archive",
494 "--prefix=.arvados.sdk/",
495 $Job->{arvados_sdk_version}, "sdk");
499 if (!defined $git_dir && $Job->{'script_version'} =~ m{^/}) {
500 # If script_version looks like an absolute path, *and* the --git-dir
501 # argument was not given -- which implies we were not invoked by
502 # crunch-dispatch -- we will use the given path as a working
503 # directory instead of resolving script_version to a git commit (or
504 # doing anything else with git).
505 $ENV{"CRUNCH_SRC_COMMIT"} = $Job->{'script_version'};
506 $ENV{"CRUNCH_SRC"} = $Job->{'script_version'};
509 # Resolve the given script_version to a git commit sha1. Also, if
510 # the repository is remote, clone it into our local filesystem: this
511 # ensures "git archive" will work, and is necessary to reliably
512 # resolve a symbolic script_version like "master^".
513 $ENV{"CRUNCH_SRC"} = "$ENV{CRUNCH_TMP}/src";
515 Log (undef, "Looking for version ".$Job->{script_version}." from repository ".$Job->{repository});
517 $ENV{"CRUNCH_SRC_COMMIT"} = $Job->{script_version};
519 # If we're running under crunch-dispatch, it will have already
520 # pulled the appropriate source tree into its own repository, and
521 # given us that repo's path as $git_dir.
523 # If we're running a "local" job, we might have to fetch content
524 # from a remote repository.
526 # (Currently crunch-dispatch gives a local path with --git-dir, but
527 # we might as well accept URLs there too in case it changes its
529 my $repo = $git_dir || $Job->{'repository'};
531 # Repository can be remote or local. If remote, we'll need to fetch it
532 # to a local dir before doing `git log` et al.
535 if ($repo =~ m{://|^[^/]*:}) {
536 # $repo is a git url we can clone, like git:// or https:// or
537 # file:/// or [user@]host:repo.git. Note "user/name@host:foo" is
538 # not recognized here because distinguishing that from a local
539 # path is too fragile. If you really need something strange here,
540 # use the ssh:// form.
541 $repo_location = 'remote';
542 } elsif ($repo =~ m{^\.*/}) {
543 # $repo is a local path to a git index. We'll also resolve ../foo
544 # to ../foo/.git if the latter is a directory. To help
545 # disambiguate local paths from named hosted repositories, this
546 # form must be given as ./ or ../ if it's a relative path.
547 if (-d "$repo/.git") {
548 $repo = "$repo/.git";
550 $repo_location = 'local';
552 # $repo is none of the above. It must be the name of a hosted
554 my $arv_repo_list = api_call("repositories/list",
555 'filters' => [['name','=',$repo]]);
556 my @repos_found = @{$arv_repo_list->{'items'}};
557 my $n_found = $arv_repo_list->{'serverResponse'}->{'items_available'};
559 Log(undef, "Repository '$repo' -> "
560 . join(", ", map { $_->{'uuid'} } @repos_found));
563 croak("Error: Found $n_found repositories with name '$repo'.");
565 $repo = $repos_found[0]->{'fetch_url'};
566 $repo_location = 'remote';
568 Log(undef, "Using $repo_location repository '$repo'");
569 $ENV{"CRUNCH_SRC_URL"} = $repo;
571 # Resolve given script_version (we'll call that $treeish here) to a
572 # commit sha1 ($commit).
573 my $treeish = $Job->{'script_version'};
575 if ($repo_location eq 'remote') {
576 # We minimize excess object-fetching by re-using the same bare
577 # repository in CRUNCH_TMP/.git for multiple crunch-jobs -- we
578 # just keep adding remotes to it as needed.
579 my $local_repo = $ENV{'CRUNCH_TMP'}."/.git";
580 my $gitcmd = "git --git-dir=\Q$local_repo\E";
582 # Set up our local repo for caching remote objects, making
584 if (!-d $local_repo) {
585 make_path($local_repo) or croak("Error: could not create $local_repo");
587 # This works (exits 0 and doesn't delete fetched objects) even
588 # if $local_repo is already initialized:
589 `$gitcmd init --bare`;
591 croak("Error: $gitcmd init --bare exited ".exit_status_s($?));
594 # If $treeish looks like a hash (or abbrev hash) we look it up in
595 # our local cache first, since that's cheaper. (We don't want to
596 # do that with tags/branches though -- those change over time, so
597 # they should always be resolved by the remote repo.)
598 if ($treeish =~ /^[0-9a-f]{7,40}$/s) {
599 # Hide stderr because it's normal for this to fail:
600 my $sha1 = `$gitcmd rev-list -n1 ''\Q$treeish\E 2>/dev/null`;
602 # Careful not to resolve a branch named abcdeff to commit 1234567:
603 $sha1 =~ /^$treeish/ &&
604 $sha1 =~ /^([0-9a-f]{40})$/s) {
606 Log(undef, "Commit $commit already present in $local_repo");
610 if (!defined $commit) {
611 # If $treeish isn't just a hash or abbrev hash, or isn't here
612 # yet, we need to fetch the remote to resolve it correctly.
614 # First, remove all local heads. This prevents a name that does
615 # not exist on the remote from resolving to (or colliding with)
616 # a previously fetched branch or tag (possibly from a different
618 remove_tree("$local_repo/refs/heads", {keep_root => 1});
620 Log(undef, "Fetching objects from $repo to $local_repo");
621 `$gitcmd fetch --no-progress --tags ''\Q$repo\E \Q+refs/heads/*:refs/heads/*\E`;
623 croak("Error: `$gitcmd fetch` exited ".exit_status_s($?));
627 # Now that the data is all here, we will use our local repo for
628 # the rest of our git activities.
632 my $gitcmd = "git --git-dir=\Q$repo\E";
633 my $sha1 = `$gitcmd rev-list -n1 ''\Q$treeish\E`;
634 unless ($? == 0 && $sha1 =~ /^([0-9a-f]{40})$/) {
635 croak("`$gitcmd rev-list` exited "
637 .", '$treeish' not found, giving up");
640 Log(undef, "Version $treeish is commit $commit");
642 if ($commit ne $Job->{'script_version'}) {
643 # Record the real commit id in the database, frozentokey, logs,
644 # etc. -- instead of an abbreviation or a branch name which can
645 # become ambiguous or point to a different commit in the future.
646 if (!$Job->update_attributes('script_version' => $commit)) {
647 croak("Error: failed to update job's script_version attribute");
651 $ENV{"CRUNCH_SRC_COMMIT"} = $commit;
652 add_git_archive("$gitcmd archive ''\Q$commit\E");
655 my $git_archive = combined_git_archive();
656 if (!defined $git_archive) {
657 Log(undef, "Skip install phase (no git archive)");
659 Log(undef, "Warning: This probably means workers have no source tree!");
664 my $install_script_tries_left = 3;
665 for (my $attempts = 0; $attempts < 3; $attempts++) {
666 Log(undef, "Run install script on all workers");
668 my @srunargs = ("srun",
669 "--nodelist=$nodelist",
670 "-D", $ENV{'TMPDIR'}, "--job-name=$job_id");
671 my @execargs = ("sh", "-c",
672 "mkdir -p $ENV{CRUNCH_INSTALL} && cd $ENV{CRUNCH_TMP} && perl -");
674 $ENV{"CRUNCH_GIT_ARCHIVE_HASH"} = md5_hex($git_archive);
675 my ($install_stderr_r, $install_stderr_w);
676 pipe $install_stderr_r, $install_stderr_w or croak("pipe() failed: $!");
677 set_nonblocking($install_stderr_r);
678 my $installpid = fork();
679 if ($installpid == 0)
681 close($install_stderr_r);
682 fcntl($install_stderr_w, F_SETFL, 0) or croak($!); # no close-on-exec
683 open(STDOUT, ">&", $install_stderr_w);
684 open(STDERR, ">&", $install_stderr_w);
685 srun (\@srunargs, \@execargs, {}, $build_script . $git_archive);
688 close($install_stderr_w);
689 # Tell freeze_if_want_freeze how to kill the child, otherwise the
690 # "waitpid(installpid)" loop won't get interrupted by a freeze:
691 $proc{$installpid} = {};
693 # Track whether anything appears on stderr other than slurm errors
694 # ("srun: ...") and the "starting: ..." message printed by the
695 # srun subroutine itself:
696 my $stderr_anything_from_script = 0;
697 my $match_our_own_errors = '^(srun: error: |starting: \[)';
698 while ($installpid != waitpid(-1, WNOHANG)) {
699 freeze_if_want_freeze ($installpid);
700 # Wait up to 0.1 seconds for something to appear on stderr, then
701 # do a non-blocking read.
702 my $bits = fhbits($install_stderr_r);
703 select ($bits, undef, $bits, 0.1);
704 if (0 < sysread ($install_stderr_r, $stderr_buf, 8192, length($stderr_buf)))
706 while ($stderr_buf =~ /^(.*?)\n/) {
708 substr $stderr_buf, 0, 1+length($line), "";
709 Log(undef, "stderr $line");
710 if ($line !~ /$match_our_own_errors/) {
711 $stderr_anything_from_script = 1;
716 delete $proc{$installpid};
717 $install_exited = $?;
718 close($install_stderr_r);
719 if (length($stderr_buf) > 0) {
720 if ($stderr_buf !~ /$match_our_own_errors/) {
721 $stderr_anything_from_script = 1;
723 Log(undef, "stderr $stderr_buf")
726 Log (undef, "Install script exited ".exit_status_s($install_exited));
727 last if $install_exited == 0 || $main::please_freeze;
728 # If the install script fails but doesn't print an error message,
729 # the next thing anyone is likely to do is just run it again in
730 # case it was a transient problem like "slurm communication fails
731 # because the network isn't reliable enough". So we'll just do
732 # that ourselves (up to 3 attempts in total). OTOH, if there is an
733 # error message, the problem is more likely to have a real fix and
734 # we should fail the job so the fixing process can start, instead
735 # of doing 2 more attempts.
736 last if $stderr_anything_from_script;
739 foreach my $tar_filename (map { tar_filename_n($_); } (1..$git_tar_count)) {
740 unlink($tar_filename);
743 if ($install_exited != 0) {
748 foreach (qw (script script_version script_parameters runtime_constraints))
752 (ref($Job->{$_}) ? JSON::encode_json($Job->{$_}) : $Job->{$_}));
754 foreach (split (/\n/, $Job->{knobs}))
756 Log (undef, "knob " . $_);
761 $main::success = undef;
767 my $thisround_succeeded = 0;
768 my $thisround_failed = 0;
769 my $thisround_failed_multiple = 0;
770 my $working_slot_count = scalar(@slot);
772 @jobstep_todo = sort { $jobstep[$a]->{level} <=> $jobstep[$b]->{level}
773 or $a <=> $b } @jobstep_todo;
774 my $level = $jobstep[$jobstep_todo[0]]->{level};
776 my $initial_tasks_this_level = 0;
777 foreach my $id (@jobstep_todo) {
778 $initial_tasks_this_level++ if ($jobstep[$id]->{level} == $level);
781 # If the number of tasks scheduled at this level #T is smaller than the number
782 # of slots available #S, only use the first #T slots, or the first slot on
783 # each node, whichever number is greater.
785 # When we dispatch tasks later, we'll allocate whole-node resources like RAM
786 # based on these numbers. Using fewer slots makes more resources available
787 # to each individual task, which should normally be a better strategy when
788 # there are fewer of them running with less parallelism.
790 # Note that this calculation is not redone if the initial tasks at
791 # this level queue more tasks at the same level. This may harm
792 # overall task throughput for that level.
794 if ($initial_tasks_this_level < @node) {
795 @freeslot = (0..$#node);
796 } elsif ($initial_tasks_this_level < @slot) {
797 @freeslot = (0..$initial_tasks_this_level - 1);
799 @freeslot = (0..$#slot);
801 my $round_num_freeslots = scalar(@freeslot);
803 my %round_max_slots = ();
804 for (my $ii = $#freeslot; $ii >= 0; $ii--) {
805 my $this_slot = $slot[$freeslot[$ii]];
806 my $node_name = $this_slot->{node}->{name};
807 $round_max_slots{$node_name} ||= $this_slot->{cpu};
808 last if (scalar(keys(%round_max_slots)) >= @node);
811 Log(undef, "start level $level with $round_num_freeslots slots");
814 my $progress_is_dirty = 1;
815 my $progress_stats_updated = 0;
817 update_progress_stats();
821 for (my $todo_ptr = 0; $todo_ptr <= $#jobstep_todo; $todo_ptr ++)
823 # Don't create new tasks if we already know the job's final result.
824 last if defined($main::success);
826 my $id = $jobstep_todo[$todo_ptr];
827 my $Jobstep = $jobstep[$id];
828 if ($Jobstep->{level} != $level)
833 pipe $reader{$id}, "writer" or croak("pipe() failed: $!");
834 set_nonblocking($reader{$id});
836 my $childslot = $freeslot[0];
837 my $childnode = $slot[$childslot]->{node};
838 my $childslotname = join (".",
839 $slot[$childslot]->{node}->{name},
840 $slot[$childslot]->{cpu});
842 my $childpid = fork();
845 $SIG{'INT'} = 'DEFAULT';
846 $SIG{'QUIT'} = 'DEFAULT';
847 $SIG{'TERM'} = 'DEFAULT';
849 foreach (values (%reader))
853 fcntl ("writer", F_SETFL, 0) or croak ($!); # no close-on-exec
854 open(STDOUT,">&writer");
855 open(STDERR,">&writer");
860 delete $ENV{"GNUPGHOME"};
861 $ENV{"TASK_UUID"} = $Jobstep->{'arvados_task'}->{'uuid'};
862 $ENV{"TASK_QSEQUENCE"} = $id;
863 $ENV{"TASK_SEQUENCE"} = $level;
864 $ENV{"JOB_SCRIPT"} = $Job->{script};
865 while (my ($param, $value) = each %{$Job->{script_parameters}}) {
866 $param =~ tr/a-z/A-Z/;
867 $ENV{"JOB_PARAMETER_$param"} = $value;
869 $ENV{"TASK_SLOT_NODE"} = $slot[$childslot]->{node}->{name};
870 $ENV{"TASK_SLOT_NUMBER"} = $slot[$childslot]->{cpu};
871 $ENV{"TASK_WORK"} = $ENV{"CRUNCH_TMP"}."/task/$childslotname";
872 $ENV{"HOME"} = $ENV{"TASK_WORK"};
873 $ENV{"TASK_KEEPMOUNT"} = $ENV{"TASK_WORK"}.".keep";
874 $ENV{"TASK_TMPDIR"} = $ENV{"TASK_WORK"}; # deprecated
875 $ENV{"CRUNCH_NODE_SLOTS"} = $round_max_slots{$ENV{TASK_SLOT_NODE}};
876 $ENV{"PATH"} = $ENV{"CRUNCH_INSTALL"} . "/bin:" . $ENV{"PATH"};
882 "--nodelist=".$childnode->{name},
883 qw(-n1 -c1 -N1 -D), $ENV{'TMPDIR'},
884 "--job-name=$job_id.$id.$$",
887 my $stdbuf = " stdbuf --output=0 --error=0 ";
890 "if [ -e $ENV{TASK_WORK} ]; then rm -rf $ENV{TASK_WORK}; fi; "
891 ."mkdir -p $ENV{CRUNCH_TMP} $ENV{JOB_WORK} $ENV{TASK_WORK} $ENV{TASK_KEEPMOUNT} "
892 ."&& cd $ENV{CRUNCH_TMP} "
893 # These environment variables get used explicitly later in
894 # $command. No tool is expected to read these values directly.
895 .q{&& MEM=$(awk '($1 == "MemTotal:"){print $2}' </proc/meminfo) }
896 .q{&& SWAP=$(awk '($1 == "SwapTotal:"){print $2}' </proc/meminfo) }
897 ."&& MEMLIMIT=\$(( (\$MEM * 95) / ($ENV{CRUNCH_NODE_SLOTS} * 100) )) "
898 ."&& let SWAPLIMIT=\$MEMLIMIT+\$SWAP ";
899 $command .= "&& exec arv-mount --by-pdh --allow-other $ENV{TASK_KEEPMOUNT} --exec ";
902 my $containername = "$Jobstep->{arvados_task}->{uuid}-$Jobstep->{failures}";
903 my $cidfile = "$ENV{CRUNCH_TMP}/$containername.cid";
904 $command .= "crunchstat -cgroup-root=/sys/fs/cgroup -cgroup-parent=docker -cgroup-cid=$cidfile -poll=10000 ";
905 $command .= "$docker_bin run --name=$containername --attach=stdout --attach=stderr --attach=stdin -i \Q$dockeruserarg\E --cidfile=$cidfile --sig-proxy ";
906 # We only set memory limits if Docker lets us limit both memory and swap.
907 # Memory limits alone have been supported longer, but subprocesses tend
908 # to get SIGKILL if they exceed that without any swap limit set.
909 # See #5642 for additional background.
910 if ($docker_limitmem) {
911 $command .= "--memory=\${MEMLIMIT}k --memory-swap=\${SWAPLIMIT}k ";
914 # The source tree and $destdir directory (which we have
915 # installed on the worker host) are available in the container,
916 # under the same path.
917 $command .= "--volume=\Q$ENV{CRUNCH_SRC}:$ENV{CRUNCH_SRC}:ro\E ";
918 $command .= "--volume=\Q$ENV{CRUNCH_INSTALL}:$ENV{CRUNCH_INSTALL}:ro\E ";
920 # Currently, we make arv-mount's mount point appear at /keep
921 # inside the container (instead of using the same path as the
922 # host like we do with CRUNCH_SRC and CRUNCH_INSTALL). However,
923 # crunch scripts and utilities must not rely on this. They must
924 # use $TASK_KEEPMOUNT.
925 $command .= "--volume=\Q$ENV{TASK_KEEPMOUNT}:/keep:ro\E ";
926 $ENV{TASK_KEEPMOUNT} = "/keep";
928 # TASK_WORK is almost exactly like a docker data volume: it
929 # starts out empty, is writable, and persists until no
930 # containers use it any more. We don't use --volumes-from to
931 # share it with other containers: it is only accessible to this
932 # task, and it goes away when this task stops.
934 # However, a docker data volume is writable only by root unless
935 # the mount point already happens to exist in the container with
936 # different permissions. Therefore, we [1] assume /tmp already
937 # exists in the image and is writable by the crunch user; [2]
938 # avoid putting TASK_WORK inside CRUNCH_TMP (which won't be
939 # writable if they are created by docker while setting up the
940 # other --volumes); and [3] create $TASK_WORK inside the
941 # container using $build_script.
942 $command .= "--volume=/tmp ";
943 $ENV{"TASK_WORK"} = "/tmp/crunch-job-task-work/$childslotname";
944 $ENV{"HOME"} = $ENV{"TASK_WORK"};
945 $ENV{"TASK_TMPDIR"} = $ENV{"TASK_WORK"}; # deprecated
947 # TODO: Share a single JOB_WORK volume across all task
948 # containers on a given worker node, and delete it when the job
949 # ends (and, in case that doesn't work, when the next job
952 # For now, use the same approach as TASK_WORK above.
953 $ENV{"JOB_WORK"} = "/tmp/crunch-job-work";
955 while (my ($env_key, $env_val) = each %ENV)
957 if ($env_key =~ /^(ARVADOS|CRUNCH|JOB|TASK)_/) {
958 $command .= "--env=\Q$env_key=$env_val\E ";
961 $command .= "--env=\QHOME=$ENV{HOME}\E ";
962 $command .= "\Q$docker_hash\E ";
964 if ($Job->{arvados_sdk_version}) {
966 $command .= "perl - \Q$ENV{CRUNCH_SRC}/crunch_scripts/$Job->{script}\E";
968 $command .= "/bin/sh -c \'python -c " .
969 '"from pkg_resources import get_distribution as get; print \"Using Arvados SDK version\", get(\"arvados-python-client\").version"' .
970 ">&2 2>/dev/null; " .
971 "mkdir -p \"$ENV{JOB_WORK}\" \"$ENV{TASK_WORK}\" && " .
972 "if which stdbuf >/dev/null ; then " .
973 " exec $stdbuf \Q$ENV{CRUNCH_SRC}/crunch_scripts/$Job->{script}\E ;" .
975 " exec \Q$ENV{CRUNCH_SRC}/crunch_scripts/$Job->{script}\E ;" .
980 $command .= "crunchstat -cgroup-root=/sys/fs/cgroup -poll=10000 ";
982 $command .= "perl - $ENV{CRUNCH_SRC}/crunch_scripts/" . $Job->{"script"};
985 my @execargs = ('bash', '-c', $command);
986 srun (\@srunargs, \@execargs, undef, $build_script);
987 # exec() failed, we assume nothing happened.
988 die "srun() failed on build script\n";
991 if (!defined $childpid)
998 $proc{$childpid} = { jobstep => $id,
1001 jobstepname => "$job_id.$id.$childpid",
1003 croak ("assert failed: \$slot[$childslot]->{'pid'} exists") if exists $slot[$childslot]->{pid};
1004 $slot[$childslot]->{pid} = $childpid;
1006 Log ($id, "job_task ".$Jobstep->{'arvados_task'}->{'uuid'});
1007 Log ($id, "child $childpid started on $childslotname");
1008 $Jobstep->{starttime} = time;
1009 $Jobstep->{node} = $childnode->{name};
1010 $Jobstep->{slotindex} = $childslot;
1011 delete $Jobstep->{stderr};
1012 delete $Jobstep->{finishtime};
1013 delete $Jobstep->{tempfail};
1015 $Jobstep->{'arvados_task'}->{started_at} = strftime "%Y-%m-%dT%H:%M:%SZ", gmtime($Jobstep->{starttime});
1016 $Jobstep->{'arvados_task'}->save;
1018 splice @jobstep_todo, $todo_ptr, 1;
1021 $progress_is_dirty = 1;
1025 ($round_num_freeslots > @freeslot && $todo_ptr+1 > $#jobstep_todo))
1027 last THISROUND if $main::please_freeze;
1028 if ($main::please_info)
1030 $main::please_info = 0;
1032 create_output_collection();
1034 update_progress_stats();
1039 if (!$gotsome || ($latest_refresh + 2 < scalar time))
1041 check_refresh_wanted();
1043 update_progress_stats();
1044 select (undef, undef, undef, 0.1);
1046 elsif (time - $progress_stats_updated >= 30 || $progress_is_dirty)
1048 update_progress_stats();
1050 $working_slot_count = scalar(grep { $_->{node}->{fail_count} == 0 &&
1051 $_->{node}->{hold_count} < 4 } @slot);
1052 if (($thisround_failed_multiple >= 8 && $thisround_succeeded == 0) ||
1053 ($thisround_failed_multiple >= 16 && $thisround_failed_multiple > $thisround_succeeded))
1055 my $message = "Repeated failure rate too high ($thisround_failed_multiple/"
1056 .($thisround_failed+$thisround_succeeded)
1057 .") -- giving up on this round";
1058 Log (undef, $message);
1062 # move slots from freeslot to holdslot (or back to freeslot) if necessary
1063 for (my $i=$#freeslot; $i>=0; $i--) {
1064 if ($slot[$freeslot[$i]]->{node}->{hold_until} > scalar time) {
1065 push @holdslot, (splice @freeslot, $i, 1);
1068 for (my $i=$#holdslot; $i>=0; $i--) {
1069 if ($slot[$holdslot[$i]]->{node}->{hold_until} <= scalar time) {
1070 push @freeslot, (splice @holdslot, $i, 1);
1074 # give up if no nodes are succeeding
1075 if ($working_slot_count < 1) {
1076 Log(undef, "Every node has failed -- giving up");
1083 push @freeslot, splice @holdslot;
1084 map { $slot[$freeslot[$_]]->{node}->{losing_streak} = 0 } (0..$#freeslot);
1087 Log (undef, "wait for last ".(scalar keys %proc)." children to finish");
1090 if ($main::please_continue) {
1091 $main::please_continue = 0;
1094 $main::please_info = 0, freeze(), create_output_collection(), save_meta(1) if $main::please_info;
1096 if (!reapchildren())
1098 check_refresh_wanted();
1100 update_progress_stats();
1101 select (undef, undef, undef, 0.1);
1102 killem (keys %proc) if $main::please_freeze;
1106 update_progress_stats();
1107 freeze_if_want_freeze();
1110 if (!defined $main::success)
1112 if (!@jobstep_todo) {
1114 } elsif ($working_slot_count < 1) {
1115 save_output_collection();
1117 exit(EX_RETRY_UNLOCKED);
1118 } elsif ($thisround_succeeded == 0 &&
1119 ($thisround_failed == 0 || $thisround_failed > 4)) {
1120 my $message = "stop because $thisround_failed tasks failed and none succeeded";
1121 Log (undef, $message);
1126 goto ONELEVEL if !defined $main::success;
1129 release_allocation();
1131 my $collated_output = save_output_collection();
1132 Log (undef, "finish");
1137 if ($collated_output && $main::success) {
1138 $final_state = 'Complete';
1140 $final_state = 'Failed';
1142 $Job->update_attributes('state' => $final_state);
1144 exit (($final_state eq 'Complete') ? 0 : 1);
1148 sub update_progress_stats
1150 $progress_stats_updated = time;
1151 return if !$progress_is_dirty;
1152 my ($todo, $done, $running) = (scalar @jobstep_todo,
1153 scalar @jobstep_done,
1154 scalar keys(%proc));
1155 $Job->{'tasks_summary'} ||= {};
1156 $Job->{'tasks_summary'}->{'todo'} = $todo;
1157 $Job->{'tasks_summary'}->{'done'} = $done;
1158 $Job->{'tasks_summary'}->{'running'} = $running;
1159 $Job->update_attributes('tasks_summary' => $Job->{'tasks_summary'});
1160 Log (undef, "status: $done done, $running running, $todo todo");
1161 $progress_is_dirty = 0;
1168 my $pid = waitpid (-1, WNOHANG);
1169 return 0 if $pid <= 0;
1171 my $whatslot = ($slot[$proc{$pid}->{slot}]->{node}->{name}
1173 . $slot[$proc{$pid}->{slot}]->{cpu});
1174 my $jobstepid = $proc{$pid}->{jobstep};
1175 my $elapsed = time - $proc{$pid}->{time};
1176 my $Jobstep = $jobstep[$jobstepid];
1178 my $childstatus = $?;
1179 my $exitvalue = $childstatus >> 8;
1180 my $exitinfo = "exit ".exit_status_s($childstatus);
1181 $Jobstep->{'arvados_task'}->reload;
1182 my $task_success = $Jobstep->{'arvados_task'}->{success};
1184 Log ($jobstepid, "child $pid on $whatslot $exitinfo success=$task_success");
1186 if (!defined $task_success) {
1187 # task did not indicate one way or the other --> fail
1188 Log($jobstepid, sprintf(
1189 "ERROR: Task process exited %d, but never updated its task record to indicate success and record its output.",
1190 exit_status_s($childstatus)));
1191 $Jobstep->{'arvados_task'}->{success} = 0;
1192 $Jobstep->{'arvados_task'}->save;
1199 $temporary_fail ||= $Jobstep->{tempfail};
1200 $temporary_fail ||= ($exitvalue == TASK_TEMPFAIL);
1202 ++$thisround_failed;
1203 ++$thisround_failed_multiple if $Jobstep->{'failures'} >= 1;
1205 # Check for signs of a failed or misconfigured node
1206 if (++$slot[$proc{$pid}->{slot}]->{node}->{losing_streak} >=
1207 2+$slot[$proc{$pid}->{slot}]->{node}->{ncpus}) {
1208 # Don't count this against jobstep failure thresholds if this
1209 # node is already suspected faulty and srun exited quickly
1210 if ($slot[$proc{$pid}->{slot}]->{node}->{hold_until} &&
1212 Log ($jobstepid, "blaming failure on suspect node " .
1213 $slot[$proc{$pid}->{slot}]->{node}->{name});
1214 $temporary_fail ||= 1;
1216 ban_node_by_slot($proc{$pid}->{slot});
1219 Log ($jobstepid, sprintf('failure (#%d, %s) after %d seconds',
1220 ++$Jobstep->{'failures'},
1221 $temporary_fail ? 'temporary' : 'permanent',
1224 if (!$temporary_fail || $Jobstep->{'failures'} >= 3) {
1225 # Give up on this task, and the whole job
1228 # Put this task back on the todo queue
1229 push @jobstep_todo, $jobstepid;
1230 $Job->{'tasks_summary'}->{'failed'}++;
1234 ++$thisround_succeeded;
1235 $slot[$proc{$pid}->{slot}]->{node}->{losing_streak} = 0;
1236 $slot[$proc{$pid}->{slot}]->{node}->{hold_until} = 0;
1237 $slot[$proc{$pid}->{slot}]->{node}->{fail_count} = 0;
1238 push @jobstep_done, $jobstepid;
1239 Log ($jobstepid, "success in $elapsed seconds");
1241 $Jobstep->{exitcode} = $childstatus;
1242 $Jobstep->{finishtime} = time;
1243 $Jobstep->{'arvados_task'}->{finished_at} = strftime "%Y-%m-%dT%H:%M:%SZ", gmtime($Jobstep->{finishtime});
1244 $Jobstep->{'arvados_task'}->save;
1245 process_stderr ($jobstepid, $task_success);
1246 Log ($jobstepid, sprintf("task output (%d bytes): %s",
1247 length($Jobstep->{'arvados_task'}->{output}),
1248 $Jobstep->{'arvados_task'}->{output}));
1250 close $reader{$jobstepid};
1251 delete $reader{$jobstepid};
1252 delete $slot[$proc{$pid}->{slot}]->{pid};
1253 push @freeslot, $proc{$pid}->{slot};
1256 if ($task_success) {
1258 my $newtask_list = [];
1259 my $newtask_results;
1261 $newtask_results = api_call(
1264 'created_by_job_task_uuid' => $Jobstep->{'arvados_task'}->{uuid}
1266 'order' => 'qsequence',
1267 'offset' => scalar(@$newtask_list),
1269 push(@$newtask_list, @{$newtask_results->{items}});
1270 } while (@{$newtask_results->{items}});
1271 foreach my $arvados_task (@$newtask_list) {
1273 'level' => $arvados_task->{'sequence'},
1275 'arvados_task' => $arvados_task
1277 push @jobstep, $jobstep;
1278 push @jobstep_todo, $#jobstep;
1282 $progress_is_dirty = 1;
1286 sub check_refresh_wanted
1288 my @stat = stat $ENV{"CRUNCH_REFRESH_TRIGGER"};
1289 if (@stat && $stat[9] > $latest_refresh) {
1290 $latest_refresh = scalar time;
1291 my $Job2 = api_call("jobs/get", uuid => $jobspec);
1292 for my $attr ('cancelled_at',
1293 'cancelled_by_user_uuid',
1294 'cancelled_by_client_uuid',
1296 $Job->{$attr} = $Job2->{$attr};
1298 if ($Job->{'state'} ne "Running") {
1299 if ($Job->{'state'} eq "Cancelled") {
1300 Log (undef, "Job cancelled at " . $Job->{'cancelled_at'} . " by user " . $Job->{'cancelled_by_user_uuid'});
1302 Log (undef, "Job state unexpectedly changed to " . $Job->{'state'});
1305 $main::please_freeze = 1;
1312 my $last_squeue_check = $squeue_checked;
1314 # Do not call `squeue` or check the kill list more than once every
1316 return if $last_squeue_check > time - 15;
1317 $squeue_checked = time;
1319 # Look for children from which we haven't received stderr data since
1320 # the last squeue check. If no such children exist, all procs are
1321 # alive and there's no need to even look at squeue.
1323 # As long as the crunchstat poll interval (10s) is shorter than the
1324 # squeue check interval (15s) this should make the squeue check an
1326 my $silent_procs = 0;
1327 for my $jobstep (values %proc)
1329 if ($jobstep->{stderr_at} < $last_squeue_check)
1334 return if $silent_procs == 0;
1336 # use killem() on procs whose killtime is reached
1337 while (my ($pid, $jobstep) = each %proc)
1339 if (exists $jobstep->{killtime}
1340 && $jobstep->{killtime} <= time
1341 && $jobstep->{stderr_at} < $last_squeue_check)
1344 if ($jobstep->{stderr_at}) {
1345 $sincewhen = " in last " . (time - $jobstep->{stderr_at}) . "s";
1347 Log($jobstep->{jobstep}, "killing orphaned srun process $pid (task not in slurm queue, no stderr received$sincewhen)");
1354 # here is an opportunity to check for mysterious problems with local procs
1358 # Get a list of steps still running. Note: squeue(1) says --steps
1359 # selects a format (which we override anyway) and allows us to
1360 # specify which steps we're interested in (which we don't).
1361 # Importantly, it also changes the meaning of %j from "job name" to
1362 # "step name" and (although this isn't mentioned explicitly in the
1363 # docs) switches from "one line per job" mode to "one line per step"
1364 # mode. Without it, we'd just get a list of one job, instead of a
1366 my @squeue = `squeue --jobs=\Q$ENV{SLURM_JOB_ID}\E --steps --format='%j' --noheader`;
1369 Log(undef, "warning: squeue exit status $? ($!)");
1374 # which of my jobsteps are running, according to squeue?
1376 for my $jobstepname (@squeue)
1378 $ok{$jobstepname} = 1;
1381 # Check for child procs >60s old and not mentioned by squeue.
1382 while (my ($pid, $jobstep) = each %proc)
1384 if ($jobstep->{time} < time - 60
1385 && $jobstep->{jobstepname}
1386 && !exists $ok{$jobstep->{jobstepname}}
1387 && !exists $jobstep->{killtime})
1389 # According to slurm, this task has ended (successfully or not)
1390 # -- but our srun child hasn't exited. First we must wait (30
1391 # seconds) in case this is just a race between communication
1392 # channels. Then, if our srun child process still hasn't
1393 # terminated, we'll conclude some slurm communication
1394 # error/delay has caused the task to die without notifying srun,
1395 # and we'll kill srun ourselves.
1396 $jobstep->{killtime} = time + 30;
1397 Log($jobstep->{jobstep}, "notice: task is not in slurm queue but srun process $pid has not exited");
1403 sub release_allocation
1407 Log (undef, "release job allocation");
1408 system "scancel $ENV{SLURM_JOB_ID}";
1416 foreach my $job (keys %reader)
1419 while (0 < sysread ($reader{$job}, $buf, 8192))
1421 print STDERR $buf if $ENV{CRUNCH_DEBUG};
1422 $jobstep[$job]->{stderr_at} = time;
1423 $jobstep[$job]->{stderr} .= $buf;
1424 preprocess_stderr ($job);
1425 if (length ($jobstep[$job]->{stderr}) > 16384)
1427 substr ($jobstep[$job]->{stderr}, 0, 8192) = "";
1436 sub preprocess_stderr
1440 while ($jobstep[$job]->{stderr} =~ /^(.*?)\n/) {
1442 substr $jobstep[$job]->{stderr}, 0, 1+length($line), "";
1443 Log ($job, "stderr $line");
1444 if ($line =~ /srun: error: (SLURM job $ENV{SLURM_JOB_ID} has expired|Unable to confirm allocation for job $ENV{SLURM_JOB_ID})/) {
1446 $main::please_freeze = 1;
1448 elsif ($line =~ /srun: error: Node failure on/) {
1449 my $job_slot_index = $jobstep[$job]->{slotindex};
1450 $slot[$job_slot_index]->{node}->{fail_count}++;
1451 $jobstep[$job]->{tempfail} = 1;
1452 ban_node_by_slot($job_slot_index);
1454 elsif ($line =~ /srun: error: (Unable to create job step|.*: Communication connection failure)/) {
1455 $jobstep[$job]->{tempfail} = 1;
1456 ban_node_by_slot($jobstep[$job]->{slotindex});
1458 elsif ($line =~ /arvados\.errors\.Keep/) {
1459 $jobstep[$job]->{tempfail} = 1;
1468 my $task_success = shift;
1469 preprocess_stderr ($job);
1472 Log ($job, "stderr $_");
1473 } split ("\n", $jobstep[$job]->{stderr});
1480 if (!open($keep, "-|", "arv-get", "--retries", retry_count(), $hash)) {
1481 Log(undef, "fetch_block run error from arv-get $hash: $!");
1484 my $output_block = "";
1487 my $bytes = sysread($keep, $buf, 1024 * 1024);
1488 if (!defined $bytes) {
1489 Log(undef, "fetch_block read error from arv-get: $!");
1490 $output_block = undef;
1492 } elsif ($bytes == 0) {
1493 # sysread returns 0 at the end of the pipe.
1496 # some bytes were read into buf.
1497 $output_block .= $buf;
1502 Log(undef, "fetch_block arv-get exited " . exit_status_s($?));
1503 $output_block = undef;
1505 return $output_block;
1508 # Create a collection by concatenating the output of all tasks (each
1509 # task's output is either a manifest fragment, a locator for a
1510 # manifest fragment stored in Keep, or nothing at all). Return the
1511 # portable_data_hash of the new collection.
1512 sub create_output_collection
1514 Log (undef, "collate");
1516 my ($child_out, $child_in);
1517 my $pid = open2($child_out, $child_in, 'python', '-c', q{
1520 print (arvados.api("v1").collections().
1521 create(body={"manifest_text": sys.stdin.read()}).
1522 execute(num_retries=int(sys.argv[1]))["portable_data_hash"])
1526 my $manifest_size = 0;
1530 my $output = $_->{'arvados_task'}->{output};
1531 next if (!defined($output));
1533 if ($output =~ /^[0-9a-f]{32}(\+\S+)*$/) {
1534 $next_write = fetch_block($output);
1536 $next_write = $output;
1538 if (defined($next_write)) {
1539 if (!defined(syswrite($child_in, $next_write))) {
1540 # There's been an error writing. Stop the loop.
1541 # We'll log details about the exit code later.
1544 $manifest_size += length($next_write);
1547 my $uuid = $_->{'arvados_task'}->{'uuid'};
1548 Log (undef, "Error retrieving '$output' output by task $task_idx ($uuid)");
1553 Log(undef, "collated output manifest text to send to API server is $manifest_size bytes with access tokens");
1556 my $s = IO::Select->new($child_out);
1557 if ($s->can_read(120)) {
1558 sysread($child_out, $joboutput, 1024 * 1024);
1561 Log(undef, "output collection creation exited " . exit_status_s($?));
1567 Log (undef, "timed out while creating output collection");
1568 foreach my $signal (2, 2, 2, 15, 15, 9) {
1569 kill($signal, $pid);
1570 last if waitpid($pid, WNOHANG) == -1;
1579 # Calls create_output_collection, logs the result, and returns it.
1580 # If that was successful, save that as the output in the job record.
1581 sub save_output_collection {
1582 my $collated_output = create_output_collection();
1584 if (!$collated_output) {
1585 Log(undef, "Failed to write output collection");
1588 Log(undef, "job output $collated_output");
1589 $Job->update_attributes('output' => $collated_output);
1591 return $collated_output;
1598 my $sig = 2; # SIGINT first
1599 if (exists $proc{$_}->{"sent_$sig"} &&
1600 time - $proc{$_}->{"sent_$sig"} > 4)
1602 $sig = 15; # SIGTERM if SIGINT doesn't work
1604 if (exists $proc{$_}->{"sent_$sig"} &&
1605 time - $proc{$_}->{"sent_$sig"} > 4)
1607 $sig = 9; # SIGKILL if SIGTERM doesn't work
1609 if (!exists $proc{$_}->{"sent_$sig"})
1611 Log ($proc{$_}->{jobstep}, "sending 2x signal $sig to pid $_");
1613 select (undef, undef, undef, 0.1);
1616 kill $sig, $_; # srun wants two SIGINT to really interrupt
1618 $proc{$_}->{"sent_$sig"} = time;
1619 $proc{$_}->{"killedafter"} = time - $proc{$_}->{"time"};
1629 vec($bits,fileno($_),1) = 1;
1635 # Send log output to Keep via arv-put.
1637 # $log_pipe_in and $log_pipe_out are the input and output filehandles to the arv-put pipe.
1638 # $log_pipe_out_buf is a string containing all output read from arv-put so far.
1639 # $log_pipe_out_select is an IO::Select object around $log_pipe_out.
1640 # $log_pipe_pid is the pid of the arv-put subprocess.
1642 # The only functions that should access these variables directly are:
1644 # log_writer_start($logfilename)
1645 # Starts an arv-put pipe, reading data on stdin and writing it to
1646 # a $logfilename file in an output collection.
1648 # log_writer_read_output([$timeout])
1649 # Read output from $log_pipe_out and append it to $log_pipe_out_buf.
1650 # Passes $timeout to the select() call, with a default of 0.01.
1651 # Returns the result of the last read() call on $log_pipe_out, or
1652 # -1 if read() wasn't called because select() timed out.
1653 # Only other log_writer_* functions should need to call this.
1655 # log_writer_send($txt)
1656 # Writes $txt to the output log collection.
1658 # log_writer_finish()
1659 # Closes the arv-put pipe and returns the output that it produces.
1661 # log_writer_is_active()
1662 # Returns a true value if there is currently a live arv-put
1663 # process, false otherwise.
1665 my ($log_pipe_in, $log_pipe_out, $log_pipe_out_buf, $log_pipe_out_select,
1668 sub log_writer_start($)
1670 my $logfilename = shift;
1671 $log_pipe_pid = open2($log_pipe_out, $log_pipe_in,
1675 '--filename', $logfilename,
1677 $log_pipe_out_buf = "";
1678 $log_pipe_out_select = IO::Select->new($log_pipe_out);
1681 sub log_writer_read_output {
1682 my $timeout = shift || 0.01;
1684 while ($read && $log_pipe_out_select->can_read($timeout)) {
1685 $read = read($log_pipe_out, $log_pipe_out_buf, 65536,
1686 length($log_pipe_out_buf));
1688 if (!defined($read)) {
1689 Log(undef, "error reading log manifest from arv-put: $!");
1694 sub log_writer_send($)
1697 print $log_pipe_in $txt;
1698 log_writer_read_output();
1701 sub log_writer_finish()
1703 return unless $log_pipe_pid;
1705 close($log_pipe_in);
1707 my $logger_failed = 0;
1708 my $read_result = log_writer_read_output(120);
1709 if ($read_result == -1) {
1710 $logger_failed = -1;
1711 Log (undef, "timed out reading from 'arv-put'");
1712 } elsif ($read_result != 0) {
1713 $logger_failed = -2;
1714 Log(undef, "failed to read arv-put log manifest to EOF");
1717 waitpid($log_pipe_pid, 0);
1719 $logger_failed ||= $?;
1720 Log(undef, "log_writer_finish: arv-put exited " . exit_status_s($?))
1723 close($log_pipe_out);
1724 my $arv_put_output = $logger_failed ? undef : $log_pipe_out_buf;
1725 $log_pipe_pid = $log_pipe_in = $log_pipe_out = $log_pipe_out_buf =
1726 $log_pipe_out_select = undef;
1728 return $arv_put_output;
1731 sub log_writer_is_active() {
1732 return $log_pipe_pid;
1735 sub Log # ($jobstep_id, $logmessage)
1737 if ($_[1] =~ /\n/) {
1738 for my $line (split (/\n/, $_[1])) {
1743 my $fh = select STDERR; $|=1; select $fh;
1744 my $message = sprintf ("%s %d %s %s", $job_id, $$, @_);
1745 $message =~ s{([^ -\176])}{"\\" . sprintf ("%03o", ord($1))}ge;
1748 if (log_writer_is_active() || -t STDERR) {
1749 my @gmtime = gmtime;
1750 $datetime = sprintf ("%04d-%02d-%02d_%02d:%02d:%02d",
1751 $gmtime[5]+1900, $gmtime[4]+1, @gmtime[3,2,1,0]);
1753 print STDERR ((-t STDERR) ? ($datetime." ".$message) : $message);
1755 if (log_writer_is_active()) {
1756 log_writer_send($datetime . " " . $message);
1763 my ($package, $file, $line) = caller;
1764 my $message = "@_ at $file line $line\n";
1765 Log (undef, $message);
1766 freeze() if @jobstep_todo;
1767 create_output_collection() if @jobstep_todo;
1777 if ($Job->{'state'} eq 'Cancelled') {
1778 $Job->update_attributes('finished_at' => scalar gmtime);
1780 $Job->update_attributes('state' => 'Failed');
1787 my $justcheckpoint = shift; # false if this will be the last meta saved
1788 return if $justcheckpoint; # checkpointing is not relevant post-Warehouse.pm
1789 return unless log_writer_is_active();
1790 my $log_manifest = log_writer_finish();
1791 return unless defined($log_manifest);
1794 my $prev_log_coll = api_call("collections/get", uuid => $Job->{log});
1795 $log_manifest = $prev_log_coll->{manifest_text} . $log_manifest;
1798 my $log_coll = api_call(
1799 "collections/create", ensure_unique_name => 1, collection => {
1800 manifest_text => $log_manifest,
1801 owner_uuid => $Job->{owner_uuid},
1802 name => sprintf("Log from %s job %s", $Job->{script}, $Job->{uuid}),
1804 Log(undef, "log collection is " . $log_coll->{portable_data_hash});
1805 $Job->update_attributes('log' => $log_coll->{portable_data_hash});
1809 sub freeze_if_want_freeze
1811 if ($main::please_freeze)
1813 release_allocation();
1816 # kill some srun procs before freeze+stop
1817 map { $proc{$_} = {} } @_;
1820 killem (keys %proc);
1821 select (undef, undef, undef, 0.1);
1823 while (($died = waitpid (-1, WNOHANG)) > 0)
1825 delete $proc{$died};
1830 create_output_collection();
1840 Log (undef, "Freeze not implemented");
1847 croak ("Thaw not implemented");
1863 $s =~ s{\\(.)}{$1 eq "n" ? "\n" : $1}ge;
1870 my $srunargs = shift;
1871 my $execargs = shift;
1872 my $opts = shift || {};
1874 my $args = $have_slurm ? [@$srunargs, @$execargs] : $execargs;
1876 $Data::Dumper::Terse = 1;
1877 $Data::Dumper::Indent = 0;
1878 my $show_cmd = Dumper($args);
1879 $show_cmd =~ s/(TOKEN\\*=)[^\s\']+/${1}[...]/g;
1880 $show_cmd =~ s/\n/ /g;
1881 if ($opts->{fork}) {
1882 Log(undef, "starting: $show_cmd");
1884 # This is a child process: parent is in charge of reading our
1885 # stderr and copying it to Log() if needed.
1886 warn "starting: $show_cmd\n";
1889 if (defined $stdin) {
1890 my $child = open STDIN, "-|";
1891 defined $child or die "no fork: $!";
1893 print $stdin or die $!;
1894 close STDOUT or die $!;
1899 return system (@$args) if $opts->{fork};
1902 warn "ENV size is ".length(join(" ",%ENV));
1903 die "exec failed: $!: @$args";
1907 sub ban_node_by_slot {
1908 # Don't start any new jobsteps on this node for 60 seconds
1910 $slot[$slotid]->{node}->{hold_until} = 60 + scalar time;
1911 $slot[$slotid]->{node}->{hold_count}++;
1912 Log (undef, "backing off node " . $slot[$slotid]->{node}->{name} . " for 60 seconds");
1917 my ($lockfile, $error_message) = @_;
1918 open L, ">", $lockfile or croak("$lockfile: $!");
1919 if (!flock L, LOCK_EX|LOCK_NB) {
1920 croak("Can't lock $lockfile: $error_message\n");
1924 sub find_docker_image {
1925 # Given a Keep locator, check to see if it contains a Docker image.
1926 # If so, return its stream name and Docker hash.
1927 # If not, return undef for both values.
1928 my $locator = shift;
1929 my ($streamname, $filename);
1930 my $image = api_call("collections/get", uuid => $locator);
1932 foreach my $line (split(/\n/, $image->{manifest_text})) {
1933 my @tokens = split(/\s+/, $line);
1935 $streamname = shift(@tokens);
1936 foreach my $filedata (grep(/^\d+:\d+:/, @tokens)) {
1937 if (defined($filename)) {
1938 return (undef, undef); # More than one file in the Collection.
1940 $filename = (split(/:/, $filedata, 3))[2];
1945 if (defined($filename) and ($filename =~ /^([0-9A-Fa-f]{64})\.tar$/)) {
1946 return ($streamname, $1);
1948 return (undef, undef);
1953 # Calculate the number of times an operation should be retried,
1954 # assuming exponential backoff, and that we're willing to retry as
1955 # long as tasks have been running. Enforce a minimum of 3 retries.
1956 my ($starttime, $endtime, $timediff, $retries);
1958 $starttime = $jobstep[0]->{starttime};
1959 $endtime = $jobstep[-1]->{finishtime};
1961 if (!defined($starttime)) {
1963 } elsif (!defined($endtime)) {
1964 $timediff = time - $starttime;
1966 $timediff = ($endtime - $starttime) - (time - $endtime);
1968 if ($timediff > 0) {
1969 $retries = int(log($timediff) / log(2));
1971 $retries = 1; # Use the minimum.
1973 return ($retries > 3) ? $retries : 3;
1977 # Pass in two function references.
1978 # This method will be called with the remaining arguments.
1979 # If it dies, retry it with exponential backoff until it succeeds,
1980 # or until the current retry_count is exhausted. After each failure
1981 # that can be retried, the second function will be called with
1982 # the current try count (0-based), next try time, and error message.
1983 my $operation = shift;
1984 my $retry_callback = shift;
1985 my $retries = retry_count();
1986 foreach my $try_count (0..$retries) {
1987 my $next_try = time + (2 ** $try_count);
1988 my $result = eval { $operation->(@_); };
1991 } elsif ($try_count < $retries) {
1992 $retry_callback->($try_count, $next_try, $@);
1993 my $sleep_time = $next_try - time;
1994 sleep($sleep_time) if ($sleep_time > 0);
1997 # Ensure the error message ends in a newline, so Perl doesn't add
1998 # retry_op's line number to it.
2004 # Pass in a /-separated API method name, and arguments for it.
2005 # This function will call that method, retrying as needed until
2006 # the current retry_count is exhausted, with a log on the first failure.
2007 my $method_name = shift;
2008 my $log_api_retry = sub {
2009 my ($try_count, $next_try_at, $errmsg) = @_;
2010 $errmsg =~ s/\s*\bat \Q$0\E line \d+\.?\s*//;
2011 $errmsg =~ s/\s/ /g;
2012 $errmsg =~ s/\s+$//;
2014 if ($next_try_at < time) {
2015 $retry_msg = "Retrying.";
2017 my $next_try_fmt = strftime "%Y-%m-%dT%H:%M:%SZ", gmtime($next_try_at);
2018 $retry_msg = "Retrying at $next_try_fmt.";
2020 Log(undef, "API method $method_name failed: $errmsg. $retry_msg");
2023 foreach my $key (split(/\//, $method_name)) {
2024 $method = $method->{$key};
2026 return retry_op(sub { $method->execute(@_); }, $log_api_retry, @_);
2030 # Given a $?, return a human-readable exit code string like "0" or
2031 # "1" or "0 with signal 1" or "1 with signal 11".
2032 my $exitcode = shift;
2033 my $s = $exitcode >> 8;
2034 if ($exitcode & 0x7f) {
2035 $s .= " with signal " . ($exitcode & 0x7f);
2037 if ($exitcode & 0x80) {
2038 $s .= " with core dump";
2043 sub handle_readall {
2044 # Pass in a glob reference to a file handle.
2045 # Read all its contents and return them as a string.
2046 my $fh_glob_ref = shift;
2048 return <$fh_glob_ref>;
2051 sub tar_filename_n {
2053 return sprintf("%s/git.%s.%d.tar", $ENV{CRUNCH_TMP}, $job_id, $n);
2056 sub add_git_archive {
2057 # Pass in a git archive command as a string or list, a la system().
2058 # This method will save its output to be included in the archive sent to the
2062 if (!open(GIT_ARCHIVE, ">", tar_filename_n($git_tar_count))) {
2063 croak("Failed to save git archive: $!");
2065 my $git_pid = open2(">&GIT_ARCHIVE", $git_input, @_);
2067 waitpid($git_pid, 0);
2070 croak("Failed to save git archive: git exited " . exit_status_s($?));
2074 sub combined_git_archive {
2075 # Combine all saved tar archives into a single archive, then return its
2076 # contents in a string. Return undef if no archives have been saved.
2077 if ($git_tar_count < 1) {
2080 my $base_tar_name = tar_filename_n(1);
2081 foreach my $tar_to_append (map { tar_filename_n($_); } (2..$git_tar_count)) {
2082 my $tar_exit = system("tar", "-Af", $base_tar_name, $tar_to_append);
2083 if ($tar_exit != 0) {
2084 croak("Error preparing build archive: tar -A exited " .
2085 exit_status_s($tar_exit));
2088 if (!open(GIT_TAR, "<", $base_tar_name)) {
2089 croak("Could not open build archive: $!");
2091 my $tar_contents = handle_readall(\*GIT_TAR);
2093 return $tar_contents;
2096 sub set_nonblocking {
2098 my $flags = fcntl ($fh, F_GETFL, 0) or croak ($!);
2099 fcntl ($fh, F_SETFL, $flags | O_NONBLOCK) or croak ($!);
2105 # This is crunch-job's internal dispatch script. crunch-job running on the API
2106 # server invokes this script on individual compute nodes, or localhost if we're
2107 # running a job locally. It gets called in two modes:
2109 # * No arguments: Installation mode. Read a tar archive from the DATA
2110 # file handle; it includes the Crunch script's source code, and
2111 # maybe SDKs as well. Those should be installed in the proper
2112 # locations. This runs outside of any Docker container, so don't try to
2113 # introspect Crunch's runtime environment.
2115 # * With arguments: Crunch script run mode. This script should set up the
2116 # environment, then run the command specified in the arguments. This runs
2117 # inside any Docker container.
2120 use File::Path qw( make_path remove_tree );
2121 use POSIX qw(getcwd);
2123 use constant TASK_TEMPFAIL => 111;
2125 # Map SDK subdirectories to the path environments they belong to.
2126 my %SDK_ENVVARS = ("perl/lib" => "PERLLIB", "ruby/lib" => "RUBYLIB");
2128 my $destdir = $ENV{"CRUNCH_SRC"};
2129 my $archive_hash = $ENV{"CRUNCH_GIT_ARCHIVE_HASH"};
2130 my $repo = $ENV{"CRUNCH_SRC_URL"};
2131 my $install_dir = $ENV{"CRUNCH_INSTALL"} || (getcwd() . "/opt");
2132 my $job_work = $ENV{"JOB_WORK"};
2133 my $task_work = $ENV{"TASK_WORK"};
2135 open(STDOUT_ORIG, ">&", STDOUT);
2136 open(STDERR_ORIG, ">&", STDERR);
2138 for my $dir ($destdir, $job_work, $task_work) {
2141 -e $dir or die "Failed to create temporary directory ($dir): $!";
2146 remove_tree($task_work, {keep_root => 1});
2149 ### Crunch script run mode
2151 # We want to do routine logging during task 0 only. This gives the user
2152 # the information they need, but avoids repeating the information for every
2155 if ($ENV{TASK_SEQUENCE} eq "0") {
2158 printf STDERR_ORIG "[Crunch] $msg\n", @_;
2164 my $python_src = "$install_dir/python";
2165 my $venv_dir = "$job_work/.arvados.venv";
2166 my $venv_built = -e "$venv_dir/bin/activate";
2167 if ((!$venv_built) and (-d $python_src) and can_run("virtualenv")) {
2168 shell_or_die(undef, "virtualenv", "--quiet", "--system-site-packages",
2169 "--python=python2.7", $venv_dir);
2170 shell_or_die(TASK_TEMPFAIL, "$venv_dir/bin/pip", "--quiet", "install", "-I", $python_src);
2172 $Log->("Built Python SDK virtualenv");
2175 my @pysdk_version_cmd = ("python", "-c",
2176 "from pkg_resources import get_distribution as get; print get('arvados-python-client').version");
2178 $Log->("Running in Python SDK virtualenv");
2179 @pysdk_version_cmd = ();
2180 my $orig_argv = join(" ", map { quotemeta($_); } @ARGV);
2181 @ARGV = ("/bin/sh", "-ec",
2182 ". \Q$venv_dir/bin/activate\E; exec $orig_argv");
2183 } elsif (-d $python_src) {
2184 $Log->("Warning: virtualenv not found inside Docker container default " .
2185 "\$PATH. Can't install Python SDK.");
2188 if (@pysdk_version_cmd) {
2189 open(my $pysdk_version_pipe, "-|", @pysdk_version_cmd);
2190 my $pysdk_version = <$pysdk_version_pipe>;
2191 close($pysdk_version_pipe);
2193 chomp($pysdk_version);
2194 $Log->("Using Arvados SDK version $pysdk_version");
2196 # A lot could've gone wrong here, but pretty much all of it means that
2197 # Python won't be able to load the Arvados SDK.
2198 $Log->("Warning: Arvados SDK not found");
2202 while (my ($sdk_dir, $sdk_envkey) = each(%SDK_ENVVARS)) {
2203 my $sdk_path = "$install_dir/$sdk_dir";
2205 if ($ENV{$sdk_envkey}) {
2206 $ENV{$sdk_envkey} = "$sdk_path:" . $ENV{$sdk_envkey};
2208 $ENV{$sdk_envkey} = $sdk_path;
2210 $Log->("Arvados SDK added to %s", $sdk_envkey);
2215 die "Cannot exec `@ARGV`: $!";
2218 ### Installation mode
2219 open L, ">", "$destdir.lock" or die "$destdir.lock: $!";
2221 if (readlink ("$destdir.archive_hash") eq $archive_hash && -d $destdir) {
2222 # This exact git archive (source + arvados sdk) is already installed
2223 # here, so there's no need to reinstall it.
2225 # We must consume our DATA section, though: otherwise the process
2226 # feeding it to us will get SIGPIPE.
2228 while (read(DATA, $buf, 65536)) { }
2233 unlink "$destdir.archive_hash";
2237 # Ignore SIGPIPE: we check retval of close() instead. See perlipc(1).
2238 local $SIG{PIPE} = "IGNORE";
2239 warn "Extracting archive: $archive_hash\n";
2240 # --ignore-zeros is necessary sometimes: depending on how much NUL
2241 # padding tar -A put on our combined archive (which in turn depends
2242 # on the length of the component archives) tar without
2243 # --ignore-zeros will exit before consuming stdin and cause close()
2244 # to fail on the resulting SIGPIPE.
2245 if (!open(TARX, "|-", "tar", "--ignore-zeros", "-xC", $destdir)) {
2246 die "Error launching 'tar -xC $destdir': $!";
2248 # If we send too much data to tar in one write (> 4-5 MiB), it stops, and we
2249 # get SIGPIPE. We must feed it data incrementally.
2251 while (read(DATA, $tar_input, 65536)) {
2252 print TARX $tar_input;
2255 die "'tar -xC $destdir' exited $?: $!";
2261 my $sdk_root = "$destdir/.arvados.sdk/sdk";
2263 foreach my $sdk_lang (("python",
2264 map { (split /\//, $_, 2)[0]; } keys(%SDK_ENVVARS))) {
2265 if (-d "$sdk_root/$sdk_lang") {
2266 if (!rename("$sdk_root/$sdk_lang", "$install_dir/$sdk_lang")) {
2267 die "Failed to install $sdk_lang SDK: $!";
2273 my $python_dir = "$install_dir/python";
2274 if ((-d $python_dir) and can_run("python2.7")) {
2275 open(my $egg_info_pipe, "-|",
2276 "python2.7 \Q$python_dir/setup.py\E egg_info 2>&1 >/dev/null");
2277 my @egg_info_errors = <$egg_info_pipe>;
2278 close($egg_info_pipe);
2281 if (@egg_info_errors and (($egg_info_errors[-1] =~ /\bgit\b/) or ($egg_info_errors[-1] =~ /\[Errno 2\]/))) {
2282 # egg_info apparently failed because it couldn't ask git for a build tag.
2283 # Specify no build tag.
2284 open(my $pysdk_cfg, ">>", "$python_dir/setup.cfg");
2285 print $pysdk_cfg "\n[egg_info]\ntag_build =\n";
2288 my $egg_info_exit = $? >> 8;
2289 foreach my $errline (@egg_info_errors) {
2292 warn "python setup.py egg_info failed: exit $egg_info_exit";
2293 exit ($egg_info_exit || 1);
2298 # Hide messages from the install script (unless it fails: shell_or_die
2299 # will show $destdir.log in that case).
2300 open(STDOUT, ">>", "$destdir.log");
2301 open(STDERR, ">&", STDOUT);
2303 if (-e "$destdir/crunch_scripts/install") {
2304 shell_or_die (undef, "$destdir/crunch_scripts/install", $install_dir);
2305 } elsif (!-e "./install.sh" && -e "./tests/autotests.sh") {
2307 shell_or_die (undef, "./tests/autotests.sh", $install_dir);
2308 } elsif (-e "./install.sh") {
2309 shell_or_die (undef, "./install.sh", $install_dir);
2312 if ($archive_hash) {
2313 unlink "$destdir.archive_hash.new";
2314 symlink ($archive_hash, "$destdir.archive_hash.new") or die "$destdir.archive_hash.new: $!";
2315 rename ("$destdir.archive_hash.new", "$destdir.archive_hash") or die "$destdir.archive_hash: $!";
2321 my $command_name = shift;
2322 open(my $which, "-|", "which", $command_name);
2323 while (<$which>) { }
2330 my $exitcode = shift;
2332 if ($ENV{"DEBUG"}) {
2333 print STDERR "@_\n";
2335 if (system (@_) != 0) {
2338 my $exitstatus = sprintf("exit %d signal %d", $code >> 8, $code & 0x7f);
2339 open STDERR, ">&STDERR_ORIG";
2340 system ("cat $destdir.log >&2");
2341 warn "@_ failed ($err): $exitstatus";
2342 if (defined($exitcode)) {
2346 exit (($code >> 8) || 1);