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[Qemu-devel] [PULL 07/17] vmdk: Implement .bdrv_write_compressed
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PULL 07/17] vmdk: Implement .bdrv_write_compressed |
Date: |
Fri, 9 May 2014 21:03:27 +0200 |
From: Fam Zheng <address@hidden>
Add a wrapper function to support "compressed" path in qemu-img convert.
Only support streamOptimized subformat case for now (num_extents == 1
and extent compression is true).
Signed-off-by: Fam Zheng <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
block/vmdk.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/block/vmdk.c b/block/vmdk.c
index 06a1f9f..057c3f1 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1496,6 +1496,19 @@ static coroutine_fn int vmdk_co_write(BlockDriverState
*bs, int64_t sector_num,
return ret;
}
+static int vmdk_write_compressed(BlockDriverState *bs,
+ int64_t sector_num,
+ const uint8_t *buf,
+ int nb_sectors)
+{
+ BDRVVmdkState *s = bs->opaque;
+ if (s->num_extents == 1 && s->extents[0].compressed) {
+ return vmdk_write(bs, sector_num, buf, nb_sectors, false, false);
+ } else {
+ return -ENOTSUP;
+ }
+}
+
static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors,
@@ -2109,6 +2122,7 @@ static BlockDriver bdrv_vmdk = {
.bdrv_reopen_prepare = vmdk_reopen_prepare,
.bdrv_read = vmdk_co_read,
.bdrv_write = vmdk_co_write,
+ .bdrv_write_compressed = vmdk_write_compressed,
.bdrv_co_write_zeroes = vmdk_co_write_zeroes,
.bdrv_close = vmdk_close,
.bdrv_create = vmdk_create,
--
1.9.0
- [Qemu-devel] [PULL 00/17] Block patches, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 04/17] block/nfs: Check for NULL server part, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 06/17] qemu-img: Convert by cluster size if target is compressed, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 05/17] block/iscsi: bump year in copyright notice, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 07/17] vmdk: Implement .bdrv_write_compressed,
Stefan Hajnoczi <=
- [Qemu-devel] [PULL 08/17] vmdk: Implement .bdrv_get_info(), Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 09/17] qemu-iotests: Test converting to streamOptimized from small cluster size, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 10/17] block: Fix open flags with BDRV_O_SNAPSHOT, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 11/17] vl.c: remove init_clocks call from main, Stefan Hajnoczi, 2014/05/09
- [Qemu-devel] [PULL 12/17] gluster: Correctly propagate errors when volume isn't accessible, Stefan Hajnoczi, 2014/05/09
[Qemu-devel] [PULL 13/17] block/raw-posix: Try both FIEMAP and SEEK_HOLE, Stefan Hajnoczi, 2014/05/09
[Qemu-devel] [PULL 14/17] block: qemu-iotests - add common.qemu, for bash-controlled qemu tests, Stefan Hajnoczi, 2014/05/09