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[Qemu-devel] [PULL 05/22] nbd: change error checking order for bitmaps
From: |
John Snow |
Subject: |
[Qemu-devel] [PULL 05/22] nbd: change error checking order for bitmaps |
Date: |
Tue, 12 Mar 2019 16:23:20 -0400 |
Check that the bitmap is not in use prior to it checking if it is
not enabled/recording guest writes. The bitmap being busy was likely
at the behest of the user, so this error has a greater chance of being
understood by the user.
Signed-off-by: John Snow <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Message-id: address@hidden
Signed-off-by: John Snow <address@hidden>
---
nbd/server.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/nbd/server.c b/nbd/server.c
index 8ddfd3e319..6c6cade12b 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -1510,6 +1510,11 @@ NBDExport *nbd_export_new(BlockDriverState *bs, uint64_t
dev_offset,
goto fail;
}
+ if (bdrv_dirty_bitmap_user_locked(bm)) {
+ error_setg(errp, "Bitmap '%s' is in use", bitmap);
+ goto fail;
+ }
+
if ((nbdflags & NBD_FLAG_READ_ONLY) && bdrv_is_writable(bs) &&
bdrv_dirty_bitmap_enabled(bm)) {
error_setg(errp,
@@ -1518,11 +1523,6 @@ NBDExport *nbd_export_new(BlockDriverState *bs, uint64_t
dev_offset,
goto fail;
}
- if (bdrv_dirty_bitmap_user_locked(bm)) {
- error_setg(errp, "Bitmap '%s' is in use", bitmap);
- goto fail;
- }
-
bdrv_dirty_bitmap_set_qmp_locked(bm, true);
exp->export_bitmap = bm;
exp->export_bitmap_context = g_strdup_printf("qemu:dirty-bitmap:%s",
--
2.17.2
- [Qemu-devel] [PULL 00/22] Bitmaps patches, John Snow, 2019/03/12
- [Qemu-devel] [PULL 01/22] block/dirty-bitmap: add recording and busy properties, John Snow, 2019/03/12
- [Qemu-devel] [PULL 03/22] block/dirty-bitmap: remove set/reset assertions against enabled bit, John Snow, 2019/03/12
- [Qemu-devel] [PULL 02/22] block/dirty-bitmaps: rename frozen predicate helper, John Snow, 2019/03/12
- [Qemu-devel] [PULL 04/22] block/dirty-bitmap: change semantics of enabled predicate, John Snow, 2019/03/12
- [Qemu-devel] [PULL 05/22] nbd: change error checking order for bitmaps,
John Snow <=
- [Qemu-devel] [PULL 06/22] block/dirty-bitmap: explicitly lock bitmaps with successors, John Snow, 2019/03/12
- [Qemu-devel] [PULL 08/22] block/dirty-bitmaps: move comment block, John Snow, 2019/03/12
- [Qemu-devel] [PULL 09/22] blockdev: remove unused paio parameter documentation, John Snow, 2019/03/12
- [Qemu-devel] [PULL 07/22] block/dirty-bitmaps: unify qmp_locked and user_locked calls, John Snow, 2019/03/12
- [Qemu-devel] [PULL 11/22] block/dirty-bitmaps: add inconsistent bit, John Snow, 2019/03/12
- [Qemu-devel] [PULL 10/22] iotests: add busy/recording bit test to 124, John Snow, 2019/03/12
- [Qemu-devel] [PULL 12/22] block/dirty-bitmap: add inconsistent status, John Snow, 2019/03/12
- [Qemu-devel] [PULL 13/22] block/dirty-bitmaps: add block_dirty_bitmap_check function, John Snow, 2019/03/12
- [Qemu-devel] [PULL 15/22] block/dirty-bitmaps: prohibit removing readonly bitmaps, John Snow, 2019/03/12
- [Qemu-devel] [PULL 16/22] block/dirty-bitmaps: disallow busy bitmaps as merge source, John Snow, 2019/03/12