add iothread option

only for virtio disk (virtio-scsi qemu 2.3 is not thread-safe currently)

improve me: grey-out/hidden the option if !virtio
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>

debian/changelog.Debian

@@ -2,6 +2,8 @@ pve-manager (4.0-12) unstable; urgency=medium
 
   * change pve-manager service type to oneshot
 
+  * add iothread option
+  
  -- Proxmox Support Team <support@proxmox.com>  Wed, 10 Jun 2015 09:05:29 +0200
 
 pve-manager (4.0-11) unstable; urgency=medium

www/manager/qemu/HDEdit.js

@@ -39,6 +39,12 @@ Ext.define('PVE.qemu.HDInputPanel', {
 	    delete me.drive.discard;
 	}
 
+	if (values.iothread && me.confid.match(/^virtio\d+$/)) {
+	    me.drive.iothread = 'on';
+	} else {
+	    delete me.drive.iothread;
+	}
+
 	if (values.cache) {
 	    me.drive.cache = values.cache;
 	} else {
@@ -88,6 +94,7 @@ Ext.define('PVE.qemu.HDInputPanel', {
 	values.diskformat = drive.format || 'raw';
 	values.cache = drive.cache || '';
 	values.discard = (drive.discard === 'on');
+	values.iothread = (drive.iothread === 'on');
 
 	me.setValues(values);
     },
@@ -227,6 +234,12 @@ Ext.define('PVE.qemu.HDInputPanel', {
 	    name: 'discard'
 	});
 
+	me.column2.push({
+	    xtype: 'pvecheckbox',
+	    fieldLabel: gettext('Iothread'),
+	    name: 'iothread'
+	});
+
 	me.callParent();
     }
 });