[Pacemaker] Fence_pcmk hangs

[Brendan Regan]

Hi,

I am having a problem with the fence_pcmk agent.  It seem to be getting stuck in an infinite loop in this while loop:


   while( defined($in = <>) )
    {
        $_ = $in;
        chomp;

        # strip leading and trailing whitespace
        s/^\s*//;
        s/\s*$//;

        # skip comments
        next if /^#/;

        $line+=1;
        $opt=$_;
        next unless $opt;

I verified this using perl –d and stepping through the code.

If I understand this correctly the script should leave the loop when the value of $in becomes undefined or if $opt is true.

I have been trying to figure out if I am missing some Perl module.  I included a list below of the load modules when running the script with perl –d

When I run the script with perl –w I get the following:



/usr/bin/perl -w /usr/sbin/fence_pcmk -o status
print (...) interpreted as function at /usr/sbin/fence_pcmk line 174.
Name "main::extra_args" used only once: possible typo at /usr/sbin/fence_pcmk line 21.
Name "main::pid" used only once: possible typo at /usr/sbin/fence_pcmk line 150.


I am running:
pacemaker 1.1.6
corosync 1.3.3
cman 3.1.5
Perl 5.12.4

Loading DB routines from perl5db.pl version 1.33
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(/usr/sbin/fence_pcmk:5): my $ME = $0;
  DB<1> M
'Carp.pm' => '1.17 from /usr/lib64/perl5/5.12.4/Carp.pm'
'Exporter.pm' => '5.64_01 from /usr/lib64/perl5/5.12.4/Exporter.pm'
'Exporter/Heavy.pm' => '5.64_01 from /usr/lib64/perl5/5.12.4/Exporter/Heavy.pm'
'Getopt/Long.pm' => '2.38 from /usr/lib64/perl5/vendor_perl/5.12.4/Getopt/Long.pm'
'IO.pm' => '1.25 from /usr/lib64/perl5/vendor_perl/5.12.4/x86_64-linux/IO.pm'
'IO/Handle.pm' => '1.28 from /usr/lib64/perl5/vendor_perl/5.12.4/x86_64-linux/IO/Handle.pm'
'SelectSaver.pm' => '1.02 from /usr/lib64/perl5/5.12.4/SelectSaver.pm'
'Symbol.pm' => '1.07 from /usr/lib64/perl5/5.12.4/Symbol.pm'
'Term/Cap.pm' => '1.12 from /usr/lib64/perl5/5.12.4/Term/Cap.pm'
'Term/ReadLine.pm' => '1.05 from /usr/lib64/perl5/5.12.4/Term/ReadLine.pm'
'XSLoader.pm' => '0.10 from /usr/lib64/perl5/5.12.4/XSLoader.pm'
'constant.pm' => '1.20 from /usr/lib64/perl5/5.12.4/constant.pm'
'overload.pm' => '1.10 from /usr/lib64/perl5/5.12.4/overload.pm'
'perl5db.pl' => '1.33 from /usr/lib64/perl5/5.12.4/perl5db.pl'
'strict.pm' => '1.04 from /usr/lib64/perl5/5.12.4/strict.pm'
'vars.pm' => '1.01 from /usr/lib64/perl5/5.12.4/vars.pm'
'warnings.pm' => '1.09 from /usr/lib64/perl5/5.12.4/warnings.pm'
'warnings/register.pm' => '1.01 from /usr/lib64/perl5/5.12.4/warnings/register.pm'
  DB<1>


Thanks for you assistance.

Brendan Regan

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