From ba6c59191f245147e7ee0c2b9ecaf5fb116f7877 Mon Sep 17 00:00:00 2001
From: Peter Lieven <pl@kamp.de>
Date: Thu, 24 Oct 2013 12:07:00 +0200
Subject: [PATCH] iscsi: set limits in BlockDriverState
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
block/iscsi.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/block/iscsi.c b/block/iscsi.c
index 3095887a27..1cafa782a1 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1384,6 +1384,20 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
sizeof(struct scsi_inquiry_block_limits));
scsi_free_scsi_task(task);
task = NULL;
+
+ if (iscsilun->bl.max_unmap < 0xffffffff) {
+ bs->bl.max_discard = sector_lun2qemu(iscsilun->bl.max_unmap,
+ iscsilun);
+ }
+ bs->bl.discard_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran,
+ iscsilun);
+
+ if (iscsilun->bl.max_ws_len < 0xffffffff) {
+ bs->bl.max_write_zeroes = sector_lun2qemu(iscsilun->bl.max_ws_len,
+ iscsilun);
+ }
+ bs->bl.write_zeroes_alignment = sector_lun2qemu(iscsilun->bl.opt_unmap_gran,
+ iscsilun);
}
#if defined(LIBISCSI_FEATURE_NOP_COUNTER)
--
2.30.2