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unix:linux:iscsi_tricks_and_techniques [2019/08/14 19:43] – rodolicounix:linux:iscsi_tricks_and_techniques [2022/07/19 17:46] – rodolico
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 <code perl addAlliSCSIS.pl> <code perl addAlliSCSIS.pl>
-#! /usr/bin/perl -w+#! /usr/bin/env perl
  
-my @servers = ( '10.5.136.1' ); +use strict; 
 +use warnings; 
 + 
 +# change following to be a list of 1 or more iSCSI targets to be queried 
 +my @servers = ( '10.10.10.10','10.10.10.9' ); 
 my %targets; my %targets;
  
  
 foreach my $server ( @servers ) { foreach my $server ( @servers ) {
 +   print "\n" . '-'x40 . "\nGetting targets on server $server\n" . '-'x40 . "\n";
    my @list = `iscsiadm -m discovery -t st -p $server`;    my @list = `iscsiadm -m discovery -t st -p $server`;
    chomp @list;    chomp @list;
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       # only add them if they are in this IP       # only add them if they are in this IP
       $targets{ $targetName } = $portal if $portal =~ m/^$server/;       $targets{ $targetName } = $portal if $portal =~ m/^$server/;
 +      print "$targetName\t$targets{ $targetName }\n";
    }    }
 } }
  
 +print "\n" . '-'x40 . "\nGetting active sessions\n". '-'x40 . "\n";
 # now, get active sessions so we can filter them # now, get active sessions so we can filter them
 my @activeSessions = `iscsiadm -m session`; my @activeSessions = `iscsiadm -m session`;
 chomp @activeSessions; chomp @activeSessions;
-foreach $session ( @activeSessions ) { +foreach my $session ( @activeSessions ) { 
-   $session =~ m/([0-9,:]+).* (.*)$/;+   $session =~ m/^.*[^0-9:.]([0-9,:.]+).*(iqn\S*)/;
    my ( $portal,$targetName ) = ( $1,$2 );    my ( $portal,$targetName ) = ( $1,$2 );
-   delete $targets{ $targetName } if exists( $targets{$targetName} );+   print "$portal\t$targetName"; 
 +   if ( exists( $targets{$targetName} ) ) { 
 +      print "\tNOT updating\n"; 
 +      delete $targets{ $targetName }; 
 +   } else { 
 +      print "Needs to be added\n"; 
 +   }
 } }
  
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 } }
 # print `ls /dev/disk/by-path/`; # print `ls /dev/disk/by-path/`;
 +
 </code> </code>
  
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 # first, log out of the session # first, log out of the session
 iscsiadm -m node --target='name of target' --portal "ip:port" --logout iscsiadm -m node --target='name of target' --portal "ip:port" --logout
-# now, do a discovery and delete the entry from your local database +# now, do a remove it from the session 
-iscsiadm -m discovery --target='name of target' --portal "ip:port" -o delete+iscsiadm -m node --target='name of target' --portal "ip:port" -o delete
 </code> </code>
  
unix/linux/iscsi_tricks_and_techniques.txt · Last modified: 2022/12/17 14:05 by rodolico