+++ /dev/null
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Date: Thu, 11 Apr 2024 11:29:24 +0200
-Subject: [PATCH] block/copy-before-write: create block_copy bitmap in filter
- node
-
-Currently block_copy creates copy_bitmap in source node. But that is in
-bad relation with .independent_close=true of copy-before-write filter:
-source node may be detached and removed before .bdrv_close() handler
-called, which should call block_copy_state_free(), which in turn should
-remove copy_bitmap.
-
-That's all not ideal: it would be better if internal bitmap of
-block-copy object is not attached to any node. But that is not possible
-now.
-
-The simplest solution is just create copy_bitmap in filter node, where
-anyway two other bitmaps are created.
-
-Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
-Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
-Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
----
- block/block-copy.c | 3 +-
- block/copy-before-write.c | 2 +-
- include/block/block-copy.h | 1 +
- tests/qemu-iotests/257.out | 112 ++++++++++++++++++-------------------
- 4 files changed, 60 insertions(+), 58 deletions(-)
-
-diff --git a/block/block-copy.c b/block/block-copy.c
-index 9ee3dd7ef5..8fca2c3698 100644
---- a/block/block-copy.c
-+++ b/block/block-copy.c
-@@ -351,6 +351,7 @@ static int64_t block_copy_calculate_cluster_size(BlockDriverState *target,
- }
-
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-+ BlockDriverState *copy_bitmap_bs,
- const BdrvDirtyBitmap *bitmap,
- Error **errp)
- {
-@@ -367,7 +368,7 @@ BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
- return NULL;
- }
-
-- copy_bitmap = bdrv_create_dirty_bitmap(source->bs, cluster_size, NULL,
-+ copy_bitmap = bdrv_create_dirty_bitmap(copy_bitmap_bs, cluster_size, NULL,
- errp);
- if (!copy_bitmap) {
- return NULL;
-diff --git a/block/copy-before-write.c b/block/copy-before-write.c
-index 2cbf6f9346..afa5f473d2 100644
---- a/block/copy-before-write.c
-+++ b/block/copy-before-write.c
-@@ -472,7 +472,7 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
- ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
- bs->file->bs->supported_zero_flags);
-
-- s->bcs = block_copy_state_new(bs->file, s->target, bitmap, errp);
-+ s->bcs = block_copy_state_new(bs->file, s->target, bs, bitmap, errp);
- if (!s->bcs) {
- error_prepend(errp, "Cannot create block-copy-state: ");
- ret = -EINVAL;
-diff --git a/include/block/block-copy.h b/include/block/block-copy.h
-index 0700953ab8..8b41643bfa 100644
---- a/include/block/block-copy.h
-+++ b/include/block/block-copy.h
-@@ -25,6 +25,7 @@ typedef struct BlockCopyState BlockCopyState;
- typedef struct BlockCopyCallState BlockCopyCallState;
-
- BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target,
-+ BlockDriverState *copy_bitmap_bs,
- const BdrvDirtyBitmap *bitmap,
- Error **errp);
-
-diff --git a/tests/qemu-iotests/257.out b/tests/qemu-iotests/257.out
-index aa76131ca9..c33dd7f3a9 100644
---- a/tests/qemu-iotests/257.out
-+++ b/tests/qemu-iotests/257.out
-@@ -120,16 +120,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -596,16 +596,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -865,16 +865,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -1341,16 +1341,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -1610,16 +1610,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -2086,16 +2086,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -2355,16 +2355,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -2831,16 +2831,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -3100,16 +3100,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -3576,16 +3576,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -3845,16 +3845,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -4321,16 +4321,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -4590,16 +4590,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
-@@ -5066,16 +5066,16 @@ write -P0x67 0x3fe0000 0x20000
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- }
-- ],
-- "drive0": [
-+ },
- {
- "busy": false,
- "count": 0,
- "granularity": 65536,
- "persistent": false,
- "recording": false
-- },
-+ }
-+ ],
-+ "drive0": [
- {
- "busy": false,
- "count": 458752,
projects / pve-qemu.git / blobdiff