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[Qemu-devel] [PATCH 14/14] block-qcow2: do not keep track of highest-all
From: |
Uri Lublin |
Subject: |
[Qemu-devel] [PATCH 14/14] block-qcow2: do not keep track of highest-alloc for backing files |
Date: |
Tue, 17 Mar 2009 22:40:52 +0200 |
Signed-off-by: Uri Lublin <address@hidden>
---
block-qcow2.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/block-qcow2.c b/block-qcow2.c
index c98024e..63460e0 100644
--- a/block-qcow2.c
+++ b/block-qcow2.c
@@ -260,6 +260,8 @@ static int qcow_read_extensions(BlockDriverState *bs,
uint64_t start_offset,
break;
case QCOW_EXT_MAGIC_HIGH_ALLOC:
+ if ((bs->open_flags & BDRV_O_BACKING) != 0)
+ break;
if (ext.len != sizeof(uint64_t)) {
fprintf(stderr, "ERROR: ext_high_alloc: len=%u too large"
" (>=%lu)\n",
@@ -294,6 +296,9 @@ static void update_highest_alloc(BlockDriverState *bs)
uint64_t high;
int ret;
+ if ((bs->open_flags & BDRV_O_BACKING) != 0)
+ return;
+
#ifdef DEBUG_EXT
QCowExtension ext;
int len;
--
1.6.0.6
- [Qemu-devel] [PATCH 04/14] qemu-img: adding a "-F base_fmt" option to "qemu-img create -b", (continued)
- [Qemu-devel] [PATCH 04/14] qemu-img: adding a "-F base_fmt" option to "qemu-img create -b", Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 05/14] block-qcow2: keep highest allocated offset, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 06/14] block-qcow2: export highest-alloc through BlockDriverInfo and get_info(), Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 07/14] block: info blockstats: show highest_allocated if exists, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 08/14] Add a bdrv_close_all() and call it at the end of main(), Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 09/14] block-qcow2: keep highest alloc offset in a qcow2 extension, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 10/14] qemu-img: info: show highest_alloc if exists, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 11/14] qcow2: qcow_read_extensions: make "advance offset over extension" common, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 12/14] block: pass BDRV_BACKING flag to open of a backing file, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 13/14] block: keep flags an image was opened with, Uri Lublin, 2009/03/17
- [Qemu-devel] [PATCH 14/14] block-qcow2: do not keep track of highest-alloc for backing files,
Uri Lublin <=
Re: [Qemu-devel] [PATCH 00/14] block (mostly qcow2) changes (v6), Gleb Natapov, 2009/03/24