commit 186d4f2b1deaae5c404798959bfbdb781e762045
author Peter Lieven <pl@kamp.de> Thu Oct 24 12:06:55 2013 +0200
committer Kevin Wolf <kwolf@redhat.com> Thu Nov 28 10:30:51 2013 +0100
tree 04ff6d2b10a058fc679b2ecae15731184a3ec59e
parent 4ce786914b745a144a9eda1ea33f3ff98328c527

block/iscsi: add .bdrv_get_info

Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

block/iscsi.c

diff --git a/block/iscsi.c b/block/iscsi.c
index a2d578c..3095887 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1506,6 +1506,14 @@
     return ret;
 }
 
+static int iscsi_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
+{
+    IscsiLun *iscsilun = bs->opaque;
+    bdi->unallocated_blocks_are_zero = !!iscsilun->lbprz;
+    bdi->can_write_zeroes_with_unmap = iscsilun->lbprz && iscsilun->lbp.lbpws;
+    return 0;
+}
+
 static QEMUOptionParameter iscsi_create_options[] = {
     {
         .name = BLOCK_OPT_SIZE,
@@ -1527,6 +1535,7 @@
     .create_options  = iscsi_create_options,
 
     .bdrv_getlength  = iscsi_getlength,
+    .bdrv_get_info   = iscsi_get_info,
     .bdrv_truncate   = iscsi_truncate,
 
 #if defined(LIBISCSI_FEATURE_IOVECTOR)