[sheepdog] [PATCH 09/10] vditest: add option to use a local file for testing

[MORITA Kazutaka]

This is useful to compare performances between sheepdog vdi and local
file.

Signed-off-by: MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp>
---
 script/vditest |   19 ++++++++++++++++---
 1 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/script/vditest b/script/vditest
index 81c56ff..001166f 100755
--- a/script/vditest
+++ b/script/vditest
@@ -28,6 +28,7 @@ my $offset = 0;
 my $seek_pattern = "linear";
 my $seed = time();
 my ($sblk, $eblk) = (0, 0);
+my $file = 0;
 my $flush_interval = -1;
 my $verbose = 0;
 my ($read_test, $write_test) = (0,0);
@@ -116,7 +117,11 @@ sub vdi_open {
 
     return  if $no_act;
 
-    $cmd = "qemu-io -t $cache sheepdog:$vdiname";
+    if ($file) {
+	$cmd = "qemu-io -t $cache $vdiname";
+    } else {
+	$cmd = "qemu-io -t $cache sheepdog:$vdiname";
+    }
     open2 *QEMU_OUT, *QEMU, $cmd or die "cannot run qemu-io\n"  if !$no_act;
     <QEMU_OUT>;
 }
@@ -177,7 +182,7 @@ sub vdi_flush {
 sub parse_opts {
     my %opts = ();
 
-    getopts("?aB:c:D:f:h:no:p:rs:S:T:vw", \%opts) or help(1);
+    getopts("?aB:c:D:f:Fh:no:p:rs:S:T:vw", \%opts) or help(1);
 
     foreach my $key (keys %opts) {
 	my $val = $opts{$key};
@@ -212,6 +217,9 @@ sub parse_opts {
 	    case 'f' {
 		$flush_interval = $val;
 	    }
+	    case 'F' {
+		$file = 1;
+	    }
 	    case 'h' {
 		error("\"$val\" is not valid\n")  if ($val <= 0);
 		$hbeat = $val;
@@ -283,7 +291,11 @@ sub parse {
     }
     error("too many arguments\n")  if @ARGV > 0;
 
-    $vdisize = `qemu-io -c length sheepdog:$vdiname`;
+    if ($file) {
+	$vdisize = `qemu-io -c length $vdiname`;
+    } else {
+	$vdisize = `qemu-io -c length sheepdog:$vdiname`;
+    }
     to_bytes($vdisize);
 
     error("cannot get vdi size\n")  if $vdisize == 0;
@@ -406,6 +418,7 @@ Usage: $program [OPTION] vdiname
   -D r%:w%             duty cycle used while reading and/or writing.
   -f flush_interval    specify that a flush should occur at flush_interval
                        number of IO operations.
+  -F                   vdiname is not a sheepdog vdi but a local file
   -h hbeat             displays performance statistic every <hbeat> seconds.
   -n                   print events that would occur but do not access disk.
   -o offset            set the start offset.
-- 
1.7.2.5