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From dd277015d70cd5521398d298dbc236b9aeb296f5 Mon Sep 17 00:00:00 2001
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From: John Snow <jsnow@redhat.com>
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Date: Tue, 20 Nov 2018 18:18:11 +0000
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Subject: [PATCH 17/35] dirty-bitmap: switch assert-fails to errors in
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bdrv_merge_dirty_bitmap
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RH-Author: John Snow <jsnow@redhat.com>
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Message-id: <20181120181828.15132-8-jsnow@redhat.com>
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Patchwork-id: 83055
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O-Subject: [RHEL8/rhel qemu-kvm PATCH 07/24] dirty-bitmap: switch assert-fails to errors in bdrv_merge_dirty_bitmap
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Bugzilla: 1518989
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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Move checks from qmp_x_block_dirty_bitmap_merge() to
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bdrv_merge_dirty_bitmap(), to share them with dirty bitmap merge
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transaction action in future commit.
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Note: for now, only qmp_x_block_dirty_bitmap_merge() calls
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bdrv_merge_dirty_bitmap().
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Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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Reviewed-by: John Snow <jsnow@redhat.com>
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(cherry picked from commit 06bf50068a7e952afff8c4f6470ec54a712570f7)
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Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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block/dirty-bitmap.c | 15 +++++++++++++--
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blockdev.c | 10 ----------
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2 files changed, 13 insertions(+), 12 deletions(-)
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diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
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index c9b8a6f..6c8761e 100644
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--- a/block/dirty-bitmap.c
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+++ b/block/dirty-bitmap.c
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@@ -798,12 +798,23 @@ void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap *dest, const BdrvDirtyBitmap *src,
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qemu_mutex_lock(dest->mutex);
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- assert(bdrv_dirty_bitmap_enabled(dest));
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- assert(!bdrv_dirty_bitmap_readonly(dest));
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+ if (bdrv_dirty_bitmap_frozen(dest)) {
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+ error_setg(errp, "Bitmap '%s' is frozen and cannot be modified",
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+ dest->name);
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+ goto out;
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+ }
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+
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+ if (bdrv_dirty_bitmap_readonly(dest)) {
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+ error_setg(errp, "Bitmap '%s' is readonly and cannot be modified",
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+ dest->name);
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+ goto out;
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+ }
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if (!hbitmap_merge(dest->bitmap, src->bitmap)) {
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error_setg(errp, "Bitmaps are incompatible and can't be merged");
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+ goto out;
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}
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+out:
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qemu_mutex_unlock(dest->mutex);
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}
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diff --git a/blockdev.c b/blockdev.c
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index a722188..b3d265b 100644
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--- a/blockdev.c
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+++ b/blockdev.c
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@@ -3071,16 +3071,6 @@ void qmp_x_block_dirty_bitmap_merge(const char *node, const char *dst_name,
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return;
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}
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- if (bdrv_dirty_bitmap_frozen(dst)) {
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- error_setg(errp, "Bitmap '%s' is frozen and cannot be modified",
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- dst_name);
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- return;
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- } else if (bdrv_dirty_bitmap_readonly(dst)) {
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- error_setg(errp, "Bitmap '%s' is readonly and cannot be modified",
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- dst_name);
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- return;
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- }
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-
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src = bdrv_find_dirty_bitmap(bs, src_name);
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if (!src) {
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error_setg(errp, "Dirty bitmap '%s' not found", src_name);
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--
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1.8.3.1
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