From f6dc1c31d3801dcbdf0c56574f9ff4f05180810c Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Tue, 26 Nov 2019 16:45:49 +0100 Subject: block: Error out on image creation with conflicting size options If both the create options (qemu-img create -o ...) and the size parameter were given, the size parameter was silently ignored. Instead, make specifying two sizes an error. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- block.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'block.c') diff --git a/block.c b/block.c index 473eb6eeaa..73029fad64 100644 --- a/block.c +++ b/block.c @@ -5751,12 +5751,11 @@ void bdrv_img_create(const char *filename, const char *fmt, return; } + /* Create parameter list */ create_opts = qemu_opts_append(create_opts, drv->create_opts); create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); - /* Create parameter list with default values */ opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); - qemu_opt_set_number(opts, BLOCK_OPT_SIZE, img_size, &error_abort); /* Parse -o options */ if (options) { @@ -5766,6 +5765,13 @@ void bdrv_img_create(const char *filename, const char *fmt, } } + if (!qemu_opt_get(opts, BLOCK_OPT_SIZE)) { + qemu_opt_set_number(opts, BLOCK_OPT_SIZE, img_size, &error_abort); + } else if (img_size != UINT64_C(-1)) { + error_setg(errp, "The image size must be specified only once"); + goto out; + } + if (base_filename) { qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &local_err); if (local_err) { -- cgit 1.4.1 From 7bb4941ace471fc7dd6ded4749b95b9622baa6ed Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Tue, 17 Dec 2019 15:06:38 +0100 Subject: block: Activate recursively even for already active nodes bdrv_invalidate_cache_all() assumes that all nodes in a given subtree are either active or inactive when it starts. Therefore, as soon as it arrives at an already active node, it stops. However, this assumption is wrong. For example, it's possible to take a snapshot of an inactive node, which results in an active overlay over an inactive backing file. The active overlay is probably also the root node of an inactive BlockBackend (blk->disable_perm == true). In this case, bdrv_invalidate_cache_all() does not need to do anything to activate the overlay node, but it still needs to recurse into the children and the parents to make sure that after returning success, really everything is activated. Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf Reviewed-by: Max Reitz --- block.c | 50 ++++++++++++++++++++++++-------------------------- 1 file changed, 24 insertions(+), 26 deletions(-) (limited to 'block.c') diff --git a/block.c b/block.c index 73029fad64..1b6f7c86e8 100644 --- a/block.c +++ b/block.c @@ -5335,10 +5335,6 @@ static void coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, return; } - if (!(bs->open_flags & BDRV_O_INACTIVE)) { - return; - } - QLIST_FOREACH(child, &bs->children, next) { bdrv_co_invalidate_cache(child->bs, &local_err); if (local_err) { @@ -5360,34 +5356,36 @@ static void coroutine_fn bdrv_co_invalidate_cache(BlockDriverState *bs, * just keep the extended permissions for the next time that an activation * of the image is tried. */ - bs->open_flags &= ~BDRV_O_INACTIVE; - bdrv_get_cumulative_perm(bs, &perm, &shared_perm); - ret = bdrv_check_perm(bs, NULL, perm, shared_perm, NULL, NULL, &local_err); - if (ret < 0) { - bs->open_flags |= BDRV_O_INACTIVE; - error_propagate(errp, local_err); - return; - } - bdrv_set_perm(bs, perm, shared_perm); - - if (bs->drv->bdrv_co_invalidate_cache) { - bs->drv->bdrv_co_invalidate_cache(bs, &local_err); - if (local_err) { + if (bs->open_flags & BDRV_O_INACTIVE) { + bs->open_flags &= ~BDRV_O_INACTIVE; + bdrv_get_cumulative_perm(bs, &perm, &shared_perm); + ret = bdrv_check_perm(bs, NULL, perm, shared_perm, NULL, NULL, &local_err); + if (ret < 0) { bs->open_flags |= BDRV_O_INACTIVE; error_propagate(errp, local_err); return; } - } + bdrv_set_perm(bs, perm, shared_perm); - FOR_EACH_DIRTY_BITMAP(bs, bm) { - bdrv_dirty_bitmap_skip_store(bm, false); - } + if (bs->drv->bdrv_co_invalidate_cache) { + bs->drv->bdrv_co_invalidate_cache(bs, &local_err); + if (local_err) { + bs->open_flags |= BDRV_O_INACTIVE; + error_propagate(errp, local_err); + return; + } + } - ret = refresh_total_sectors(bs, bs->total_sectors); - if (ret < 0) { - bs->open_flags |= BDRV_O_INACTIVE; - error_setg_errno(errp, -ret, "Could not refresh total sector count"); - return; + FOR_EACH_DIRTY_BITMAP(bs, bm) { + bdrv_dirty_bitmap_skip_store(bm, false); + } + + ret = refresh_total_sectors(bs, bs->total_sectors); + if (ret < 0) { + bs->open_flags |= BDRV_O_INACTIVE; + error_setg_errno(errp, -ret, "Could not refresh total sector count"); + return; + } } QLIST_FOREACH(parent, &bs->parents, next_parent) { -- cgit 1.4.1