[Stgt-devel] [PATCH 5/7] Add direct-store option to the configuration file

[Doron Shoham]

Add direct-store option to the configuration file
It is used in order to export the real device properties.
When several targets export the same device to the initiator we
will be able to use dm-multipath on the initiator.

Signed-off-by: Doron Shoham <dorons at voltaire.com>
---
 scripts/tgt-admin |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/scripts/tgt-admin b/scripts/tgt-admin
index 8eea44f..846437a 100755
--- a/scripts/tgt-admin
+++ b/scripts/tgt-admin
@@ -146,6 +146,38 @@ sub process_options {
 		}
 	}
 
+	if ( $option eq "direct-store" ) {
+		my $inq;
+		my $vendor_id="";
+		my $prod_id="";
+		my $prod_rev="";
+		my $scsi_serial="";
+	        # if we have one command, force it to be an array anyway
+		unless (ref($value) eq 'ARRAY') {
+			$value = [ $value ];
+		}
+		my @value_arr = @$value;
+		my $i = 1;
+		foreach my $direct_store (@value_arr) {
+			$inq=`sg_inq $direct_store`;
+			if ($inq=~/Vendor identification:\s*(\w+)\s*\n*Product identification:\s*([\w\s\/\-]+)\n\s*\n*Product revision level:\s*(\w*)\s*\n*Unit serial number:\s*(\w+)/)
+			{
+				$vendor_id="$1";
+				$prod_id="$2";
+				$prod_rev="$3";
+				$scsi_serial="$4";
+			}
+			$vendor_id =~ s/\s+$//;
+			$prod_id =~ s/\s+$//;
+			$prod_rev =~ s/\s+$//;
+			$scsi_serial =~ s/\s+$//;
+
+			execute("tgtadm --lld iscsi --op new --mode logicalunit --tid $next_tid --lun 1 -b $direct_store");
+			execute("tgtadm --lld iscsi --op update --mode logicalunit --tid  $next_tid --lun 1 --params vendor_id=\"$vendor_id\",product_id=\"$prod_id\",product_rev=\"$prod_rev\",scsi_sn=\"$scsi_serial\"");
+			$i += 1;
+		}
+	}
+
 	if ( $option eq "incominguser" ) {
 		if (ref($value) eq "ARRAY") {
 			my @value_arr = @$value;
-- 
1.5.3.8