I encountered an issue with IO::Compress::Gzip. After a successful gzip I want to unlink the original file but sometimes the unlink fails with a "permission denied" I made a pragmatic work around by adding a delay and try the unlink again. But a good solution would be preferred. The same issue happens with moving the new .gz to another directory. The files are not in use by another process. Running Strawberry Perl 5.22.0 on Windows 2008 and 2012

use warnings;
use strict;
use POSIX;
use Cwd;
use Cwd 'abs_path';
use Time::Local 'timelocal_nocheck';    # used for SCHEDULE option in 
+the MQX.ini
use Net::Domain qw(hostname hostfqdn hostdomain domainname);
use File::Basename;
use File::Copy;
use IO::Compress::Gzip qw(gzip $GzipError) ;
use IO::Uncompress::Gunzip qw(gunzip $GunzipError) ;
# module used in the state messages
use Digest::MD5;
# modules used in put mode
use threads;
use threads::shared;
use Thread::Queue;



       if ( gzip $archfile => "$archfile.gz", AutoClose => 1, BinModeI
+n => 1 ) {
           my $delete_try_counter = mqx_get_setting('ARCHIVEMOVETRY');
              while  ( -f $archfile and not unlink $archfile and $dele
+te_try_counter != 0 ) {
                    $global_EVENTLOG_IN_LQ->enqueue("WARNING, $arch_ha
+shref->{'EVENTLOG'},Can not delete $archfile. Error: $! try: $delete_
+try_counter");
                    $delete_try_counter -= 1;
              sleep(mqx_get_setting('ARCHIVEMOVEWAIT'));  # wait x sec
+onds before retrying
              }      
           $archfile .= ".gz";    # add .gz to the file name
       }
       else {                          # if the gzip failed try to arc
+hive the original file
             $global_EVENTLOG_IN_LQ->enqueue("ERROR, $arch_hashref->{'
+EVENTLOG'}, gzip failed on $archfile\n$GzipError");
       }
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