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 \'mkdir -p \"$ENV{JOB_WORK}\" \"$ENV{TASK_WORK}\" && " .
969 "if which stdbuf >/dev/null ; then " .
970 " exec $stdbuf \Q$ENV{CRUNCH_SRC}/crunch_scripts/$Job->{script}\E ;" .
972 " exec \Q$ENV{CRUNCH_SRC}/crunch_scripts/$Job->{script}\E ;" .
977 $command .= "crunchstat -cgroup-root=/sys/fs/cgroup -poll=10000 ";
979 $command .= "perl - $ENV{CRUNCH_SRC}/crunch_scripts/" . $Job->{"script"};
982 my @execargs = ('bash', '-c', $command);
983 srun (\@srunargs, \@execargs, undef, $build_script);
984 # exec() failed, we assume nothing happened.
985 die "srun() failed on build script\n";
988 if (!defined $childpid)
995 $proc{$childpid} = { jobstep => $id,
998 jobstepname => "$job_id.$id.$childpid",
1000 croak ("assert failed: \$slot[$childslot]->{'pid'} exists") if exists $slot[$childslot]->{pid};
1001 $slot[$childslot]->{pid} = $childpid;
1003 Log ($id, "job_task ".$Jobstep->{'arvados_task'}->{'uuid'});
1004 Log ($id, "child $childpid started on $childslotname");
1005 $Jobstep->{starttime} = time;
1006 $Jobstep->{node} = $childnode->{name};
1007 $Jobstep->{slotindex} = $childslot;
1008 delete $Jobstep->{stderr};
1009 delete $Jobstep->{finishtime};
1010 delete $Jobstep->{tempfail};
1012 $Jobstep->{'arvados_task'}->{started_at} = strftime "%Y-%m-%dT%H:%M:%SZ", gmtime($Jobstep->{starttime});
1013 $Jobstep->{'arvados_task'}->save;
1015 splice @jobstep_todo, $todo_ptr, 1;
1018 $progress_is_dirty = 1;
1022 ($round_num_freeslots > @freeslot && $todo_ptr+1 > $#jobstep_todo))
1024 last THISROUND if $main::please_freeze;
1025 if ($main::please_info)
1027 $main::please_info = 0;
1029 create_output_collection();
1031 update_progress_stats();
1036 if (!$gotsome || ($latest_refresh + 2 < scalar time))
1038 check_refresh_wanted();
1040 update_progress_stats();
1041 select (undef, undef, undef, 0.1);
1043 elsif (time - $progress_stats_updated >= 30 || $progress_is_dirty)
1045 update_progress_stats();
1047 $working_slot_count = scalar(grep { $_->{node}->{fail_count} == 0 &&
1048 $_->{node}->{hold_count} < 4 } @slot);
1049 if (($thisround_failed_multiple >= 8 && $thisround_succeeded == 0) ||
1050 ($thisround_failed_multiple >= 16 && $thisround_failed_multiple > $thisround_succeeded))
1052 my $message = "Repeated failure rate too high ($thisround_failed_multiple/"
1053 .($thisround_failed+$thisround_succeeded)
1054 .") -- giving up on this round";
1055 Log (undef, $message);
1059 # move slots from freeslot to holdslot (or back to freeslot) if necessary
1060 for (my $i=$#freeslot; $i>=0; $i--) {
1061 if ($slot[$freeslot[$i]]->{node}->{hold_until} > scalar time) {
1062 push @holdslot, (splice @freeslot, $i, 1);
1065 for (my $i=$#holdslot; $i>=0; $i--) {
1066 if ($slot[$holdslot[$i]]->{node}->{hold_until} <= scalar time) {
1067 push @freeslot, (splice @holdslot, $i, 1);
1071 # give up if no nodes are succeeding
1072 if ($working_slot_count < 1) {
1073 Log(undef, "Every node has failed -- giving up");
1080 push @freeslot, splice @holdslot;
1081 map { $slot[$freeslot[$_]]->{node}->{losing_streak} = 0 } (0..$#freeslot);
1084 Log (undef, "wait for last ".(scalar keys %proc)." children to finish");
1087 if ($main::please_continue) {
1088 $main::please_continue = 0;
1091 $main::please_info = 0, freeze(), create_output_collection(), save_meta(1) if $main::please_info;
1093 if (!reapchildren())
1095 check_refresh_wanted();
1097 update_progress_stats();
1098 select (undef, undef, undef, 0.1);
1099 killem (keys %proc) if $main::please_freeze;
1103 update_progress_stats();
1104 freeze_if_want_freeze();
1107 if (!defined $main::success)
1109 if (!@jobstep_todo) {
1111 } elsif ($working_slot_count < 1) {
1112 save_output_collection();
1114 exit(EX_RETRY_UNLOCKED);
1115 } elsif ($thisround_succeeded == 0 &&
1116 ($thisround_failed == 0 || $thisround_failed > 4)) {
1117 my $message = "stop because $thisround_failed tasks failed and none succeeded";
1118 Log (undef, $message);
1123 goto ONELEVEL if !defined $main::success;
1126 release_allocation();
1128 my $collated_output = save_output_collection();
1129 Log (undef, "finish");
1134 if ($collated_output && $main::success) {
1135 $final_state = 'Complete';
1137 $final_state = 'Failed';
1139 $Job->update_attributes('state' => $final_state);
1141 exit (($final_state eq 'Complete') ? 0 : 1);
1145 sub update_progress_stats
1147 $progress_stats_updated = time;
1148 return if !$progress_is_dirty;
1149 my ($todo, $done, $running) = (scalar @jobstep_todo,
1150 scalar @jobstep_done,
1151 scalar keys(%proc));
1152 $Job->{'tasks_summary'} ||= {};
1153 $Job->{'tasks_summary'}->{'todo'} = $todo;
1154 $Job->{'tasks_summary'}->{'done'} = $done;
1155 $Job->{'tasks_summary'}->{'running'} = $running;
1156 $Job->update_attributes('tasks_summary' => $Job->{'tasks_summary'});
1157 Log (undef, "status: $done done, $running running, $todo todo");
1158 $progress_is_dirty = 0;
1165 my $pid = waitpid (-1, WNOHANG);
1166 return 0 if $pid <= 0;
1168 my $whatslot = ($slot[$proc{$pid}->{slot}]->{node}->{name}
1170 . $slot[$proc{$pid}->{slot}]->{cpu});
1171 my $jobstepid = $proc{$pid}->{jobstep};
1172 my $elapsed = time - $proc{$pid}->{time};
1173 my $Jobstep = $jobstep[$jobstepid];
1175 my $childstatus = $?;
1176 my $exitvalue = $childstatus >> 8;
1177 my $exitinfo = "exit ".exit_status_s($childstatus);
1178 $Jobstep->{'arvados_task'}->reload;
1179 my $task_success = $Jobstep->{'arvados_task'}->{success};
1181 Log ($jobstepid, "child $pid on $whatslot $exitinfo success=$task_success");
1183 if (!defined $task_success) {
1184 # task did not indicate one way or the other --> fail
1185 Log($jobstepid, sprintf(
1186 "ERROR: Task process exited %d, but never updated its task record to indicate success and record its output.",
1187 exit_status_s($childstatus)));
1188 $Jobstep->{'arvados_task'}->{success} = 0;
1189 $Jobstep->{'arvados_task'}->save;
1196 $temporary_fail ||= $Jobstep->{tempfail};
1197 $temporary_fail ||= ($exitvalue == TASK_TEMPFAIL);
1199 ++$thisround_failed;
1200 ++$thisround_failed_multiple if $Jobstep->{'failures'} >= 1;
1202 # Check for signs of a failed or misconfigured node
1203 if (++$slot[$proc{$pid}->{slot}]->{node}->{losing_streak} >=
1204 2+$slot[$proc{$pid}->{slot}]->{node}->{ncpus}) {
1205 # Don't count this against jobstep failure thresholds if this
1206 # node is already suspected faulty and srun exited quickly
1207 if ($slot[$proc{$pid}->{slot}]->{node}->{hold_until} &&
1209 Log ($jobstepid, "blaming failure on suspect node " .
1210 $slot[$proc{$pid}->{slot}]->{node}->{name});
1211 $temporary_fail ||= 1;
1213 ban_node_by_slot($proc{$pid}->{slot});
1216 Log ($jobstepid, sprintf('failure (#%d, %s) after %d seconds',
1217 ++$Jobstep->{'failures'},
1218 $temporary_fail ? 'temporary' : 'permanent',
1221 if (!$temporary_fail || $Jobstep->{'failures'} >= 3) {
1222 # Give up on this task, and the whole job
1225 # Put this task back on the todo queue
1226 push @jobstep_todo, $jobstepid;
1227 $Job->{'tasks_summary'}->{'failed'}++;
1231 ++$thisround_succeeded;
1232 $slot[$proc{$pid}->{slot}]->{node}->{losing_streak} = 0;
1233 $slot[$proc{$pid}->{slot}]->{node}->{hold_until} = 0;
1234 $slot[$proc{$pid}->{slot}]->{node}->{fail_count} = 0;
1235 push @jobstep_done, $jobstepid;
1236 Log ($jobstepid, "success in $elapsed seconds");
1238 $Jobstep->{exitcode} = $childstatus;
1239 $Jobstep->{finishtime} = time;
1240 $Jobstep->{'arvados_task'}->{finished_at} = strftime "%Y-%m-%dT%H:%M:%SZ", gmtime($Jobstep->{finishtime});
1241 $Jobstep->{'arvados_task'}->save;
1242 process_stderr ($jobstepid, $task_success);
1243 Log ($jobstepid, sprintf("task output (%d bytes): %s",
1244 length($Jobstep->{'arvados_task'}->{output}),
1245 $Jobstep->{'arvados_task'}->{output}));
1247 close $reader{$jobstepid};
1248 delete $reader{$jobstepid};
1249 delete $slot[$proc{$pid}->{slot}]->{pid};
1250 push @freeslot, $proc{$pid}->{slot};
1253 if ($task_success) {
1255 my $newtask_list = [];
1256 my $newtask_results;
1258 $newtask_results = api_call(
1261 'created_by_job_task_uuid' => $Jobstep->{'arvados_task'}->{uuid}
1263 'order' => 'qsequence',
1264 'offset' => scalar(@$newtask_list),
1266 push(@$newtask_list, @{$newtask_results->{items}});
1267 } while (@{$newtask_results->{items}});
1268 foreach my $arvados_task (@$newtask_list) {
1270 'level' => $arvados_task->{'sequence'},
1272 'arvados_task' => $arvados_task
1274 push @jobstep, $jobstep;
1275 push @jobstep_todo, $#jobstep;
1279 $progress_is_dirty = 1;
1283 sub check_refresh_wanted
1285 my @stat = stat $ENV{"CRUNCH_REFRESH_TRIGGER"};
1286 if (@stat && $stat[9] > $latest_refresh) {
1287 $latest_refresh = scalar time;
1288 my $Job2 = api_call("jobs/get", uuid => $jobspec);
1289 for my $attr ('cancelled_at',
1290 'cancelled_by_user_uuid',
1291 'cancelled_by_client_uuid',
1293 $Job->{$attr} = $Job2->{$attr};
1295 if ($Job->{'state'} ne "Running") {
1296 if ($Job->{'state'} eq "Cancelled") {
1297 Log (undef, "Job cancelled at " . $Job->{'cancelled_at'} . " by user " . $Job->{'cancelled_by_user_uuid'});
1299 Log (undef, "Job state unexpectedly changed to " . $Job->{'state'});
1302 $main::please_freeze = 1;
1309 my $last_squeue_check = $squeue_checked;
1311 # Do not call `squeue` or check the kill list more than once every
1313 return if $last_squeue_check > time - 15;
1314 $squeue_checked = time;
1316 # Look for children from which we haven't received stderr data since
1317 # the last squeue check. If no such children exist, all procs are
1318 # alive and there's no need to even look at squeue.
1320 # As long as the crunchstat poll interval (10s) is shorter than the
1321 # squeue check interval (15s) this should make the squeue check an
1323 my $silent_procs = 0;
1324 for my $jobstep (values %proc)
1326 if ($jobstep->{stderr_at} < $last_squeue_check)
1331 return if $silent_procs == 0;
1333 # use killem() on procs whose killtime is reached
1334 while (my ($pid, $jobstep) = each %proc)
1336 if (exists $jobstep->{killtime}
1337 && $jobstep->{killtime} <= time
1338 && $jobstep->{stderr_at} < $last_squeue_check)
1341 if ($jobstep->{stderr_at}) {
1342 $sincewhen = " in last " . (time - $jobstep->{stderr_at}) . "s";
1344 Log($jobstep->{jobstep}, "killing orphaned srun process $pid (task not in slurm queue, no stderr received$sincewhen)");
1351 # here is an opportunity to check for mysterious problems with local procs
1355 # Get a list of steps still running. Note: squeue(1) says --steps
1356 # selects a format (which we override anyway) and allows us to
1357 # specify which steps we're interested in (which we don't).
1358 # Importantly, it also changes the meaning of %j from "job name" to
1359 # "step name" and (although this isn't mentioned explicitly in the
1360 # docs) switches from "one line per job" mode to "one line per step"
1361 # mode. Without it, we'd just get a list of one job, instead of a
1363 my @squeue = `squeue --jobs=\Q$ENV{SLURM_JOB_ID}\E --steps --format='%j' --noheader`;
1366 Log(undef, "warning: squeue exit status $? ($!)");
1371 # which of my jobsteps are running, according to squeue?
1373 for my $jobstepname (@squeue)
1375 $ok{$jobstepname} = 1;
1378 # Check for child procs >60s old and not mentioned by squeue.
1379 while (my ($pid, $jobstep) = each %proc)
1381 if ($jobstep->{time} < time - 60
1382 && $jobstep->{jobstepname}
1383 && !exists $ok{$jobstep->{jobstepname}}
1384 && !exists $jobstep->{killtime})
1386 # According to slurm, this task has ended (successfully or not)
1387 # -- but our srun child hasn't exited. First we must wait (30
1388 # seconds) in case this is just a race between communication
1389 # channels. Then, if our srun child process still hasn't
1390 # terminated, we'll conclude some slurm communication
1391 # error/delay has caused the task to die without notifying srun,
1392 # and we'll kill srun ourselves.
1393 $jobstep->{killtime} = time + 30;
1394 Log($jobstep->{jobstep}, "notice: task is not in slurm queue but srun process $pid has not exited");
1400 sub release_allocation
1404 Log (undef, "release job allocation");
1405 system "scancel $ENV{SLURM_JOB_ID}";
1413 foreach my $job (keys %reader)
1416 while (0 < sysread ($reader{$job}, $buf, 8192))
1418 print STDERR $buf if $ENV{CRUNCH_DEBUG};
1419 $jobstep[$job]->{stderr_at} = time;
1420 $jobstep[$job]->{stderr} .= $buf;
1421 preprocess_stderr ($job);
1422 if (length ($jobstep[$job]->{stderr}) > 16384)
1424 substr ($jobstep[$job]->{stderr}, 0, 8192) = "";
1433 sub preprocess_stderr
1437 while ($jobstep[$job]->{stderr} =~ /^(.*?)\n/) {
1439 substr $jobstep[$job]->{stderr}, 0, 1+length($line), "";
1440 Log ($job, "stderr $line");
1441 if ($line =~ /srun: error: (SLURM job $ENV{SLURM_JOB_ID} has expired|Unable to confirm allocation for job $ENV{SLURM_JOB_ID})/) {
1443 $main::please_freeze = 1;
1445 elsif ($line =~ /srun: error: Node failure on/) {
1446 my $job_slot_index = $jobstep[$job]->{slotindex};
1447 $slot[$job_slot_index]->{node}->{fail_count}++;
1448 $jobstep[$job]->{tempfail} = 1;
1449 ban_node_by_slot($job_slot_index);
1451 elsif ($line =~ /srun: error: (Unable to create job step|.*: Communication connection failure)/) {
1452 $jobstep[$job]->{tempfail} = 1;
1453 ban_node_by_slot($jobstep[$job]->{slotindex});
1455 elsif ($line =~ /arvados\.errors\.Keep/) {
1456 $jobstep[$job]->{tempfail} = 1;
1465 my $task_success = shift;
1466 preprocess_stderr ($job);
1469 Log ($job, "stderr $_");
1470 } split ("\n", $jobstep[$job]->{stderr});
1477 if (!open($keep, "-|", "arv-get", "--retries", retry_count(), $hash)) {
1478 Log(undef, "fetch_block run error from arv-get $hash: $!");
1481 my $output_block = "";
1484 my $bytes = sysread($keep, $buf, 1024 * 1024);
1485 if (!defined $bytes) {
1486 Log(undef, "fetch_block read error from arv-get: $!");
1487 $output_block = undef;
1489 } elsif ($bytes == 0) {
1490 # sysread returns 0 at the end of the pipe.
1493 # some bytes were read into buf.
1494 $output_block .= $buf;
1499 Log(undef, "fetch_block arv-get exited " . exit_status_s($?));
1500 $output_block = undef;
1502 return $output_block;
1505 # Create a collection by concatenating the output of all tasks (each
1506 # task's output is either a manifest fragment, a locator for a
1507 # manifest fragment stored in Keep, or nothing at all). Return the
1508 # portable_data_hash of the new collection.
1509 sub create_output_collection
1511 Log (undef, "collate");
1513 my ($child_out, $child_in);
1514 my $pid = open2($child_out, $child_in, 'python', '-c', q{
1517 print (arvados.api("v1").collections().
1518 create(body={"manifest_text": sys.stdin.read()}).
1519 execute(num_retries=int(sys.argv[1]))["portable_data_hash"])
1523 my $manifest_size = 0;
1527 my $output = $_->{'arvados_task'}->{output};
1528 next if (!defined($output));
1530 if ($output =~ /^[0-9a-f]{32}(\+\S+)*$/) {
1531 $next_write = fetch_block($output);
1533 $next_write = $output;
1535 if (defined($next_write)) {
1536 if (!defined(syswrite($child_in, $next_write))) {
1537 # There's been an error writing. Stop the loop.
1538 # We'll log details about the exit code later.
1541 $manifest_size += length($next_write);
1544 my $uuid = $_->{'arvados_task'}->{'uuid'};
1545 Log (undef, "Error retrieving '$output' output by task $task_idx ($uuid)");
1550 Log(undef, "collated output manifest text to send to API server is $manifest_size bytes with access tokens");
1553 my $s = IO::Select->new($child_out);
1554 if ($s->can_read(120)) {
1555 sysread($child_out, $joboutput, 1024 * 1024);
1558 Log(undef, "output collection creation exited " . exit_status_s($?));
1564 Log (undef, "timed out while creating output collection");
1565 foreach my $signal (2, 2, 2, 15, 15, 9) {
1566 kill($signal, $pid);
1567 last if waitpid($pid, WNOHANG) == -1;
1576 # Calls create_output_collection, logs the result, and returns it.
1577 # If that was successful, save that as the output in the job record.
1578 sub save_output_collection {
1579 my $collated_output = create_output_collection();
1581 if (!$collated_output) {
1582 Log(undef, "Failed to write output collection");
1585 Log(undef, "job output $collated_output");
1586 $Job->update_attributes('output' => $collated_output);
1588 return $collated_output;
1595 my $sig = 2; # SIGINT first
1596 if (exists $proc{$_}->{"sent_$sig"} &&
1597 time - $proc{$_}->{"sent_$sig"} > 4)
1599 $sig = 15; # SIGTERM if SIGINT doesn't work
1601 if (exists $proc{$_}->{"sent_$sig"} &&
1602 time - $proc{$_}->{"sent_$sig"} > 4)
1604 $sig = 9; # SIGKILL if SIGTERM doesn't work
1606 if (!exists $proc{$_}->{"sent_$sig"})
1608 Log ($proc{$_}->{jobstep}, "sending 2x signal $sig to pid $_");
1610 select (undef, undef, undef, 0.1);
1613 kill $sig, $_; # srun wants two SIGINT to really interrupt
1615 $proc{$_}->{"sent_$sig"} = time;
1616 $proc{$_}->{"killedafter"} = time - $proc{$_}->{"time"};
1626 vec($bits,fileno($_),1) = 1;
1632 # Send log output to Keep via arv-put.
1634 # $log_pipe_in and $log_pipe_out are the input and output filehandles to the arv-put pipe.
1635 # $log_pipe_out_buf is a string containing all output read from arv-put so far.
1636 # $log_pipe_out_select is an IO::Select object around $log_pipe_out.
1637 # $log_pipe_pid is the pid of the arv-put subprocess.
1639 # The only functions that should access these variables directly are:
1641 # log_writer_start($logfilename)
1642 # Starts an arv-put pipe, reading data on stdin and writing it to
1643 # a $logfilename file in an output collection.
1645 # log_writer_read_output([$timeout])
1646 # Read output from $log_pipe_out and append it to $log_pipe_out_buf.
1647 # Passes $timeout to the select() call, with a default of 0.01.
1648 # Returns the result of the last read() call on $log_pipe_out, or
1649 # -1 if read() wasn't called because select() timed out.
1650 # Only other log_writer_* functions should need to call this.
1652 # log_writer_send($txt)
1653 # Writes $txt to the output log collection.
1655 # log_writer_finish()
1656 # Closes the arv-put pipe and returns the output that it produces.
1658 # log_writer_is_active()
1659 # Returns a true value if there is currently a live arv-put
1660 # process, false otherwise.
1662 my ($log_pipe_in, $log_pipe_out, $log_pipe_out_buf, $log_pipe_out_select,
1665 sub log_writer_start($)
1667 my $logfilename = shift;
1668 $log_pipe_pid = open2($log_pipe_out, $log_pipe_in,
1672 '--filename', $logfilename,
1674 $log_pipe_out_buf = "";
1675 $log_pipe_out_select = IO::Select->new($log_pipe_out);
1678 sub log_writer_read_output {
1679 my $timeout = shift || 0.01;
1681 while ($read && $log_pipe_out_select->can_read($timeout)) {
1682 $read = read($log_pipe_out, $log_pipe_out_buf, 65536,
1683 length($log_pipe_out_buf));
1685 if (!defined($read)) {
1686 Log(undef, "error reading log manifest from arv-put: $!");
1691 sub log_writer_send($)
1694 print $log_pipe_in $txt;
1695 log_writer_read_output();
1698 sub log_writer_finish()
1700 return unless $log_pipe_pid;
1702 close($log_pipe_in);
1704 my $logger_failed = 0;
1705 my $read_result = log_writer_read_output(120);
1706 if ($read_result == -1) {
1707 $logger_failed = -1;
1708 Log (undef, "timed out reading from 'arv-put'");
1709 } elsif ($read_result != 0) {
1710 $logger_failed = -2;
1711 Log(undef, "failed to read arv-put log manifest to EOF");
1714 waitpid($log_pipe_pid, 0);
1716 $logger_failed ||= $?;
1717 Log(undef, "log_writer_finish: arv-put exited " . exit_status_s($?))
1720 close($log_pipe_out);
1721 my $arv_put_output = $logger_failed ? undef : $log_pipe_out_buf;
1722 $log_pipe_pid = $log_pipe_in = $log_pipe_out = $log_pipe_out_buf =
1723 $log_pipe_out_select = undef;
1725 return $arv_put_output;
1728 sub log_writer_is_active() {
1729 return $log_pipe_pid;
1732 sub Log # ($jobstep_id, $logmessage)
1734 if ($_[1] =~ /\n/) {
1735 for my $line (split (/\n/, $_[1])) {
1740 my $fh = select STDERR; $|=1; select $fh;
1741 my $message = sprintf ("%s %d %s %s", $job_id, $$, @_);
1742 $message =~ s{([^ -\176])}{"\\" . sprintf ("%03o", ord($1))}ge;
1745 if (log_writer_is_active() || -t STDERR) {
1746 my @gmtime = gmtime;
1747 $datetime = sprintf ("%04d-%02d-%02d_%02d:%02d:%02d",
1748 $gmtime[5]+1900, $gmtime[4]+1, @gmtime[3,2,1,0]);
1750 print STDERR ((-t STDERR) ? ($datetime." ".$message) : $message);
1752 if (log_writer_is_active()) {
1753 log_writer_send($datetime . " " . $message);
1760 my ($package, $file, $line) = caller;
1761 my $message = "@_ at $file line $line\n";
1762 Log (undef, $message);
1763 freeze() if @jobstep_todo;
1764 create_output_collection() if @jobstep_todo;
1774 if ($Job->{'state'} eq 'Cancelled') {
1775 $Job->update_attributes('finished_at' => scalar gmtime);
1777 $Job->update_attributes('state' => 'Failed');
1784 my $justcheckpoint = shift; # false if this will be the last meta saved
1785 return if $justcheckpoint; # checkpointing is not relevant post-Warehouse.pm
1786 return unless log_writer_is_active();
1787 my $log_manifest = log_writer_finish();
1788 return unless defined($log_manifest);
1791 my $prev_log_coll = api_call("collections/get", uuid => $Job->{log});
1792 $log_manifest = $prev_log_coll->{manifest_text} . $log_manifest;
1795 my $log_coll = api_call(
1796 "collections/create", ensure_unique_name => 1, collection => {
1797 manifest_text => $log_manifest,
1798 owner_uuid => $Job->{owner_uuid},
1799 name => sprintf("Log from %s job %s", $Job->{script}, $Job->{uuid}),
1801 Log(undef, "log collection is " . $log_coll->{portable_data_hash});
1802 $Job->update_attributes('log' => $log_coll->{portable_data_hash});
1806 sub freeze_if_want_freeze
1808 if ($main::please_freeze)
1810 release_allocation();
1813 # kill some srun procs before freeze+stop
1814 map { $proc{$_} = {} } @_;
1817 killem (keys %proc);
1818 select (undef, undef, undef, 0.1);
1820 while (($died = waitpid (-1, WNOHANG)) > 0)
1822 delete $proc{$died};
1827 create_output_collection();
1837 Log (undef, "Freeze not implemented");
1844 croak ("Thaw not implemented");
1860 $s =~ s{\\(.)}{$1 eq "n" ? "\n" : $1}ge;
1867 my $srunargs = shift;
1868 my $execargs = shift;
1869 my $opts = shift || {};
1871 my $args = $have_slurm ? [@$srunargs, @$execargs] : $execargs;
1873 $Data::Dumper::Terse = 1;
1874 $Data::Dumper::Indent = 0;
1875 my $show_cmd = Dumper($args);
1876 $show_cmd =~ s/(TOKEN\\*=)[^\s\']+/${1}[...]/g;
1877 $show_cmd =~ s/\n/ /g;
1878 if ($opts->{fork}) {
1879 Log(undef, "starting: $show_cmd");
1881 # This is a child process: parent is in charge of reading our
1882 # stderr and copying it to Log() if needed.
1883 warn "starting: $show_cmd\n";
1886 if (defined $stdin) {
1887 my $child = open STDIN, "-|";
1888 defined $child or die "no fork: $!";
1890 print $stdin or die $!;
1891 close STDOUT or die $!;
1896 return system (@$args) if $opts->{fork};
1899 warn "ENV size is ".length(join(" ",%ENV));
1900 die "exec failed: $!: @$args";
1904 sub ban_node_by_slot {
1905 # Don't start any new jobsteps on this node for 60 seconds
1907 $slot[$slotid]->{node}->{hold_until} = 60 + scalar time;
1908 $slot[$slotid]->{node}->{hold_count}++;
1909 Log (undef, "backing off node " . $slot[$slotid]->{node}->{name} . " for 60 seconds");
1914 my ($lockfile, $error_message) = @_;
1915 open L, ">", $lockfile or croak("$lockfile: $!");
1916 if (!flock L, LOCK_EX|LOCK_NB) {
1917 croak("Can't lock $lockfile: $error_message\n");
1921 sub find_docker_image {
1922 # Given a Keep locator, check to see if it contains a Docker image.
1923 # If so, return its stream name and Docker hash.
1924 # If not, return undef for both values.
1925 my $locator = shift;
1926 my ($streamname, $filename);
1927 my $image = api_call("collections/get", uuid => $locator);
1929 foreach my $line (split(/\n/, $image->{manifest_text})) {
1930 my @tokens = split(/\s+/, $line);
1932 $streamname = shift(@tokens);
1933 foreach my $filedata (grep(/^\d+:\d+:/, @tokens)) {
1934 if (defined($filename)) {
1935 return (undef, undef); # More than one file in the Collection.
1937 $filename = (split(/:/, $filedata, 3))[2];
1942 if (defined($filename) and ($filename =~ /^([0-9A-Fa-f]{64})\.tar$/)) {
1943 return ($streamname, $1);
1945 return (undef, undef);
1950 # Calculate the number of times an operation should be retried,
1951 # assuming exponential backoff, and that we're willing to retry as
1952 # long as tasks have been running. Enforce a minimum of 3 retries.
1953 my ($starttime, $endtime, $timediff, $retries);
1955 $starttime = $jobstep[0]->{starttime};
1956 $endtime = $jobstep[-1]->{finishtime};
1958 if (!defined($starttime)) {
1960 } elsif (!defined($endtime)) {
1961 $timediff = time - $starttime;
1963 $timediff = ($endtime - $starttime) - (time - $endtime);
1965 if ($timediff > 0) {
1966 $retries = int(log($timediff) / log(2));
1968 $retries = 1; # Use the minimum.
1970 return ($retries > 3) ? $retries : 3;
1974 # Pass in two function references.
1975 # This method will be called with the remaining arguments.
1976 # If it dies, retry it with exponential backoff until it succeeds,
1977 # or until the current retry_count is exhausted. After each failure
1978 # that can be retried, the second function will be called with
1979 # the current try count (0-based), next try time, and error message.
1980 my $operation = shift;
1981 my $retry_callback = shift;
1982 my $retries = retry_count();
1983 foreach my $try_count (0..$retries) {
1984 my $next_try = time + (2 ** $try_count);
1985 my $result = eval { $operation->(@_); };
1988 } elsif ($try_count < $retries) {
1989 $retry_callback->($try_count, $next_try, $@);
1990 my $sleep_time = $next_try - time;
1991 sleep($sleep_time) if ($sleep_time > 0);
1994 # Ensure the error message ends in a newline, so Perl doesn't add
1995 # retry_op's line number to it.
2001 # Pass in a /-separated API method name, and arguments for it.
2002 # This function will call that method, retrying as needed until
2003 # the current retry_count is exhausted, with a log on the first failure.
2004 my $method_name = shift;
2005 my $log_api_retry = sub {
2006 my ($try_count, $next_try_at, $errmsg) = @_;
2007 $errmsg =~ s/\s*\bat \Q$0\E line \d+\.?\s*//;
2008 $errmsg =~ s/\s/ /g;
2009 $errmsg =~ s/\s+$//;
2011 if ($next_try_at < time) {
2012 $retry_msg = "Retrying.";
2014 my $next_try_fmt = strftime "%Y-%m-%dT%H:%M:%SZ", gmtime($next_try_at);
2015 $retry_msg = "Retrying at $next_try_fmt.";
2017 Log(undef, "API method $method_name failed: $errmsg. $retry_msg");
2020 foreach my $key (split(/\//, $method_name)) {
2021 $method = $method->{$key};
2023 return retry_op(sub { $method->execute(@_); }, $log_api_retry, @_);
2027 # Given a $?, return a human-readable exit code string like "0" or
2028 # "1" or "0 with signal 1" or "1 with signal 11".
2029 my $exitcode = shift;
2030 my $s = $exitcode >> 8;
2031 if ($exitcode & 0x7f) {
2032 $s .= " with signal " . ($exitcode & 0x7f);
2034 if ($exitcode & 0x80) {
2035 $s .= " with core dump";
2040 sub handle_readall {
2041 # Pass in a glob reference to a file handle.
2042 # Read all its contents and return them as a string.
2043 my $fh_glob_ref = shift;
2045 return <$fh_glob_ref>;
2048 sub tar_filename_n {
2050 return sprintf("%s/git.%s.%d.tar", $ENV{CRUNCH_TMP}, $job_id, $n);
2053 sub add_git_archive {
2054 # Pass in a git archive command as a string or list, a la system().
2055 # This method will save its output to be included in the archive sent to the
2059 if (!open(GIT_ARCHIVE, ">", tar_filename_n($git_tar_count))) {
2060 croak("Failed to save git archive: $!");
2062 my $git_pid = open2(">&GIT_ARCHIVE", $git_input, @_);
2064 waitpid($git_pid, 0);
2067 croak("Failed to save git archive: git exited " . exit_status_s($?));
2071 sub combined_git_archive {
2072 # Combine all saved tar archives into a single archive, then return its
2073 # contents in a string. Return undef if no archives have been saved.
2074 if ($git_tar_count < 1) {
2077 my $base_tar_name = tar_filename_n(1);
2078 foreach my $tar_to_append (map { tar_filename_n($_); } (2..$git_tar_count)) {
2079 my $tar_exit = system("tar", "-Af", $base_tar_name, $tar_to_append);
2080 if ($tar_exit != 0) {
2081 croak("Error preparing build archive: tar -A exited " .
2082 exit_status_s($tar_exit));
2085 if (!open(GIT_TAR, "<", $base_tar_name)) {
2086 croak("Could not open build archive: $!");
2088 my $tar_contents = handle_readall(\*GIT_TAR);
2090 return $tar_contents;
2093 sub set_nonblocking {
2095 my $flags = fcntl ($fh, F_GETFL, 0) or croak ($!);
2096 fcntl ($fh, F_SETFL, $flags | O_NONBLOCK) or croak ($!);
2102 # This is crunch-job's internal dispatch script. crunch-job running on the API
2103 # server invokes this script on individual compute nodes, or localhost if we're
2104 # running a job locally. It gets called in two modes:
2106 # * No arguments: Installation mode. Read a tar archive from the DATA
2107 # file handle; it includes the Crunch script's source code, and
2108 # maybe SDKs as well. Those should be installed in the proper
2109 # locations. This runs outside of any Docker container, so don't try to
2110 # introspect Crunch's runtime environment.
2112 # * With arguments: Crunch script run mode. This script should set up the
2113 # environment, then run the command specified in the arguments. This runs
2114 # inside any Docker container.
2117 use File::Path qw( make_path remove_tree );
2118 use POSIX qw(getcwd);
2120 use constant TASK_TEMPFAIL => 111;
2122 # Map SDK subdirectories to the path environments they belong to.
2123 my %SDK_ENVVARS = ("perl/lib" => "PERLLIB", "ruby/lib" => "RUBYLIB");
2125 my $destdir = $ENV{"CRUNCH_SRC"};
2126 my $archive_hash = $ENV{"CRUNCH_GIT_ARCHIVE_HASH"};
2127 my $repo = $ENV{"CRUNCH_SRC_URL"};
2128 my $install_dir = $ENV{"CRUNCH_INSTALL"} || (getcwd() . "/opt");
2129 my $job_work = $ENV{"JOB_WORK"};
2130 my $task_work = $ENV{"TASK_WORK"};
2132 open(STDOUT_ORIG, ">&", STDOUT);
2133 open(STDERR_ORIG, ">&", STDERR);
2135 for my $dir ($destdir, $job_work, $task_work) {
2138 -e $dir or die "Failed to create temporary directory ($dir): $!";
2143 remove_tree($task_work, {keep_root => 1});
2146 ### Crunch script run mode
2148 # We want to do routine logging during task 0 only. This gives the user
2149 # the information they need, but avoids repeating the information for every
2152 if ($ENV{TASK_SEQUENCE} eq "0") {
2155 printf STDERR_ORIG "[Crunch] $msg\n", @_;
2161 my $python_src = "$install_dir/python";
2162 my $venv_dir = "$job_work/.arvados.venv";
2163 my $venv_built = -e "$venv_dir/bin/activate";
2164 if ((!$venv_built) and (-d $python_src) and can_run("virtualenv")) {
2165 shell_or_die(undef, "virtualenv", "--quiet", "--system-site-packages",
2166 "--python=python2.7", $venv_dir);
2167 shell_or_die(TASK_TEMPFAIL, "$venv_dir/bin/pip", "--quiet", "install", "-I", $python_src);
2169 $Log->("Built Python SDK virtualenv");
2172 my $pip_bin = "pip";
2174 $Log->("Running in Python SDK virtualenv");
2175 $pip_bin = "$venv_dir/bin/pip";
2176 my $orig_argv = join(" ", map { quotemeta($_); } @ARGV);
2177 @ARGV = ("/bin/sh", "-ec",
2178 ". \Q$venv_dir/bin/activate\E; exec $orig_argv");
2179 } elsif (-d $python_src) {
2180 $Log->("Warning: virtualenv not found inside Docker container default " .
2181 "\$PATH. Can't install Python SDK.");
2184 my $pkgs = `(\Q$pip_bin\E freeze 2>/dev/null | grep arvados) || dpkg-query --show '*arvados*'`;
2186 $Log->("Using Arvados SDK:");
2187 foreach my $line (split /\n/, $pkgs) {
2191 $Log->("Arvados SDK packages not found");
2194 while (my ($sdk_dir, $sdk_envkey) = each(%SDK_ENVVARS)) {
2195 my $sdk_path = "$install_dir/$sdk_dir";
2197 if ($ENV{$sdk_envkey}) {
2198 $ENV{$sdk_envkey} = "$sdk_path:" . $ENV{$sdk_envkey};
2200 $ENV{$sdk_envkey} = $sdk_path;
2202 $Log->("Arvados SDK added to %s", $sdk_envkey);
2207 die "Cannot exec `@ARGV`: $!";
2210 ### Installation mode
2211 open L, ">", "$destdir.lock" or die "$destdir.lock: $!";
2213 if (readlink ("$destdir.archive_hash") eq $archive_hash && -d $destdir) {
2214 # This exact git archive (source + arvados sdk) is already installed
2215 # here, so there's no need to reinstall it.
2217 # We must consume our DATA section, though: otherwise the process
2218 # feeding it to us will get SIGPIPE.
2220 while (read(DATA, $buf, 65536)) { }
2225 unlink "$destdir.archive_hash";
2229 # Ignore SIGPIPE: we check retval of close() instead. See perlipc(1).
2230 local $SIG{PIPE} = "IGNORE";
2231 warn "Extracting archive: $archive_hash\n";
2232 # --ignore-zeros is necessary sometimes: depending on how much NUL
2233 # padding tar -A put on our combined archive (which in turn depends
2234 # on the length of the component archives) tar without
2235 # --ignore-zeros will exit before consuming stdin and cause close()
2236 # to fail on the resulting SIGPIPE.
2237 if (!open(TARX, "|-", "tar", "--ignore-zeros", "-xC", $destdir)) {
2238 die "Error launching 'tar -xC $destdir': $!";
2240 # If we send too much data to tar in one write (> 4-5 MiB), it stops, and we
2241 # get SIGPIPE. We must feed it data incrementally.
2243 while (read(DATA, $tar_input, 65536)) {
2244 print TARX $tar_input;
2247 die "'tar -xC $destdir' exited $?: $!";
2253 my $sdk_root = "$destdir/.arvados.sdk/sdk";
2255 foreach my $sdk_lang (("python",
2256 map { (split /\//, $_, 2)[0]; } keys(%SDK_ENVVARS))) {
2257 if (-d "$sdk_root/$sdk_lang") {
2258 if (!rename("$sdk_root/$sdk_lang", "$install_dir/$sdk_lang")) {
2259 die "Failed to install $sdk_lang SDK: $!";
2265 my $python_dir = "$install_dir/python";
2266 if ((-d $python_dir) and can_run("python2.7")) {
2267 open(my $egg_info_pipe, "-|",
2268 "python2.7 \Q$python_dir/setup.py\E egg_info 2>&1 >/dev/null");
2269 my @egg_info_errors = <$egg_info_pipe>;
2270 close($egg_info_pipe);
2273 if (@egg_info_errors and (($egg_info_errors[-1] =~ /\bgit\b/) or ($egg_info_errors[-1] =~ /\[Errno 2\]/))) {
2274 # egg_info apparently failed because it couldn't ask git for a build tag.
2275 # Specify no build tag.
2276 open(my $pysdk_cfg, ">>", "$python_dir/setup.cfg");
2277 print $pysdk_cfg "\n[egg_info]\ntag_build =\n";
2280 my $egg_info_exit = $? >> 8;
2281 foreach my $errline (@egg_info_errors) {
2284 warn "python setup.py egg_info failed: exit $egg_info_exit";
2285 exit ($egg_info_exit || 1);
2290 # Hide messages from the install script (unless it fails: shell_or_die
2291 # will show $destdir.log in that case).
2292 open(STDOUT, ">>", "$destdir.log");
2293 open(STDERR, ">&", STDOUT);
2295 if (-e "$destdir/crunch_scripts/install") {
2296 shell_or_die (undef, "$destdir/crunch_scripts/install", $install_dir);
2297 } elsif (!-e "./install.sh" && -e "./tests/autotests.sh") {
2299 shell_or_die (undef, "./tests/autotests.sh", $install_dir);
2300 } elsif (-e "./install.sh") {
2301 shell_or_die (undef, "./install.sh", $install_dir);
2304 if ($archive_hash) {
2305 unlink "$destdir.archive_hash.new";
2306 symlink ($archive_hash, "$destdir.archive_hash.new") or die "$destdir.archive_hash.new: $!";
2307 rename ("$destdir.archive_hash.new", "$destdir.archive_hash") or die "$destdir.archive_hash: $!";
2313 my $command_name = shift;
2314 open(my $which, "-|", "which", $command_name);
2315 while (<$which>) { }
2322 my $exitcode = shift;
2324 if ($ENV{"DEBUG"}) {
2325 print STDERR "@_\n";
2327 if (system (@_) != 0) {
2330 my $exitstatus = sprintf("exit %d signal %d", $code >> 8, $code & 0x7f);
2331 open STDERR, ">&STDERR_ORIG";
2332 system ("cat $destdir.log >&2");
2333 warn "@_ failed ($err): $exitstatus";
2334 if (defined($exitcode)) {
2338 exit (($code >> 8) || 1);