[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-block] [PATCH 14/21] block: add bdrv_can_store_dirty_bitmap
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-block] [PATCH 14/21] block: add bdrv_can_store_dirty_bitmap |
Date: |
Wed, 9 Nov 2016 21:17:49 +0300 |
This will be needed to check some restrictions before making bitmap
persistent in qmp-block-dirty-bitmap-add (this functionality will be
added by future patch)
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
block.c | 22 ++++++++++++++++++++++
include/block/block.h | 2 ++
include/block/block_int.h | 2 ++
3 files changed, 26 insertions(+)
diff --git a/block.c b/block.c
index 2429384..1570b15 100644
--- a/block.c
+++ b/block.c
@@ -4136,3 +4136,25 @@ void
bdrv_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp)
drv->bdrv_store_persistent_dirty_bitmaps(bs, errp);
}
+
+bool bdrv_can_store_dirty_bitmap(BlockDriverState *bs, const char *name,
+ uint32_t granularity, Error **errp)
+{
+ BlockDriver *drv = bs->drv;
+
+ if (!drv) {
+ error_setg_errno(errp, ENOMEDIUM,
+ "Can't store persistent bitmaps to %s",
+ bdrv_get_device_or_node_name(bs));
+ return false;
+ }
+
+ if (!drv->bdrv_can_store_dirty_bitmap) {
+ error_setg_errno(errp, ENOTSUP,
+ "Can't store persistent bitmaps to %s",
+ bdrv_get_device_or_node_name(bs));
+ return false;
+ }
+
+ return drv->bdrv_can_store_dirty_bitmap(bs, name, granularity, errp);
+}
diff --git a/include/block/block.h b/include/block/block.h
index d23133b..6084fb7 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -526,5 +526,7 @@ void bdrv_del_child(BlockDriverState *parent, BdrvChild
*child, Error **errp);
void bdrv_load_autoloading_dirty_bitmaps(BlockDriverState *bs, Error **errp);
void bdrv_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp);
+bool bdrv_can_store_dirty_bitmap(BlockDriverState *bs, const char *name,
+ uint32_t granularity, Error **errp);
#endif
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 1adb699..f263b7e 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -326,6 +326,8 @@ struct BlockDriver {
Error **errp);
void (*bdrv_store_persistent_dirty_bitmaps)(BlockDriverState *bs,
Error **errp);
+ bool (*bdrv_can_store_dirty_bitmap)(BlockDriverState *bs, const char *name,
+ uint32_t granularity, Error **errp);
QLIST_ENTRY(BlockDriver) list;
};
--
1.8.3.1
- [Qemu-block] [PATCH v8 00/21] qcow2: persistent dirty bitmaps, Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 14/21] block: add bdrv_can_store_dirty_bitmap,
Vladimir Sementsov-Ogievskiy <=
- [Qemu-block] [PATCH 12/21] block/dirty-bitmap: add bdrv_dirty_bitmap_next(), Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 02/21] specs/qcow2: do not use wording 'bitmap header', Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 20/21] qcow2-refcount: rename inc_refcounts() and make it public, Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 15/21] qcow2: add .bdrv_can_store_dirty_bitmap, Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 17/21] qmp: add autoload parameter to block-dirty-bitmap-add, Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 01/21] specs/qcow2: fix bitmap granularity qemu-specific note, Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 21/21] qcow2-bitmap: refcounts, Vladimir Sementsov-Ogievskiy, 2016/11/09
- [Qemu-block] [PATCH 04/21] tests: add hbitmap iter test, Vladimir Sementsov-Ogievskiy, 2016/11/09