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ktest: Add timeout to ssh command 

Add a timeout to performing an ssh command. This will let testing if a
machine is alive or not, or if something else may be amiss. A timeout can be
passed to ssh, where ssh will fail if it does not complete within the given
timeout.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (VMware) 2017-02-07 12:22:03 -05:00
parent 32677207dc
commit 6e98d1b441
1 changed files with 27 additions and 8 deletions
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35
tools/testing/ktest/ktest.pl
View File

@ -1668,19 +1668,18 @@ sub fail {
}
sub run_command {
my ($command, $redirect) = @_;
my ($command, $redirect, $timeout) = @_;
my $start_time;
my $end_time;
my $dolog = 0;
my $dord = 0;
my $pid;
$start_time = time;
$command =~ s/\$SSH_USER/$ssh_user/g;
$command =~ s/\$MACHINE/$machine/g;
doprint("$command ... ");
$start_time = time;
$pid = open(CMD, "$command 2>&1 |") or
(fail "unable to exec $command" and return 0);
@ -1697,14 +1696,34 @@ sub run_command {
$dord = 1;
}
while (<CMD>) {
print LOG if ($dolog);
print RD if ($dord);
my $hit_timeout = 0;
while (1) {
my $fp = \*CMD;
if (defined($timeout)) {
doprint "timeout = $timeout\n";
}
my $line = wait_for_input($fp, $timeout);
if (!defined($line)) {
my $now = time;
if (defined($timeout) && (($now - $start_time) >= $timeout)) {
doprint "Hit timeout of $timeout, killing process\n";
$hit_timeout = 1;
kill 9, $pid;
}
last;
}
print LOG $line if ($dolog);
print RD $line if ($dord);
}
waitpid($pid, 0);
my $failed = $?;
if ($hit_timeout) {
$failed = 1;
}
close(CMD);
close(LOG) if ($dolog);
close(RD) if ($dord);
@ -1728,11 +1747,11 @@ sub run_command {
}
sub run_ssh {
my ($cmd) = @_;
my ($cmd, $timeout) = @_;
my $cp_exec = $ssh_exec;
$cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
return run_command "$cp_exec";
return run_command "$cp_exec", undef , $timeout;
}
sub run_scp {