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[Qemu-block] [PATCH v2 11/14] qemu-io: Put flag changes in the options Q
From: |
Alberto Garcia |
Subject: |
[Qemu-block] [PATCH v2 11/14] qemu-io: Put flag changes in the options QDict in reopen_f() |
Date: |
Wed, 17 Oct 2018 15:57:27 +0300 |
When reopen_f() puts a block device in the reopen queue, some of the
new options are passed using a QDict, but others ("read-only" and the
cache options) are passed as flags.
This patch puts those flags in the QDict. This way the flags parameter
becomes redundant and we'll be able to get rid of it in a subsequent
patch.
Signed-off-by: Alberto Garcia <address@hidden>
---
qemu-io-cmds.c | 27 ++++++++++++++++++++++++++-
tests/qemu-iotests/133 | 9 +++++++++
tests/qemu-iotests/133.out | 8 ++++++++
3 files changed, 43 insertions(+), 1 deletion(-)
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index db0b3ee5ef..b49a816cc8 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -10,6 +10,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
+#include "qapi/qmp/qdict.h"
#include "qemu-io.h"
#include "sysemu/block-backend.h"
#include "block/block.h"
@@ -1978,6 +1979,7 @@ static int reopen_f(BlockBackend *blk, int argc, char
**argv)
int flags = bs->open_flags;
bool writethrough = !blk_enable_write_cache(blk);
bool has_rw_option = false;
+ bool has_cache_option = false;
BlockReopenQueue *brq;
Error *local_err = NULL;
@@ -1989,6 +1991,7 @@ static int reopen_f(BlockBackend *blk, int argc, char
**argv)
error_report("Invalid cache option: %s", optarg);
return -EINVAL;
}
+ has_cache_option = true;
break;
case 'o':
if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
@@ -2046,9 +2049,31 @@ static int reopen_f(BlockBackend *blk, int argc, char
**argv)
}
qopts = qemu_opts_find(&reopen_opts, NULL);
- opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
+ opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : qdict_new();
qemu_opts_reset(&reopen_opts);
+ if (qdict_haskey(opts, BDRV_OPT_READ_ONLY)) {
+ if (has_rw_option) {
+ error_report("Cannot set both -r/-w and '" BDRV_OPT_READ_ONLY "'");
+ qobject_unref(opts);
+ return -EINVAL;
+ }
+ } else {
+ qdict_put_bool(opts, BDRV_OPT_READ_ONLY, !(flags & BDRV_O_RDWR));
+ }
+
+ if (qdict_haskey(opts, BDRV_OPT_CACHE_DIRECT) ||
+ qdict_haskey(opts, BDRV_OPT_CACHE_NO_FLUSH)) {
+ if (has_cache_option) {
+ error_report("Cannot set both -c and the cache options");
+ qobject_unref(opts);
+ return -EINVAL;
+ }
+ } else {
+ qdict_put_bool(opts, BDRV_OPT_CACHE_DIRECT, flags & BDRV_O_NOCACHE);
+ qdict_put_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, flags & BDRV_O_NO_FLUSH);
+ }
+
bdrv_subtree_drained_begin(bs);
brq = bdrv_reopen_queue(NULL, bs, opts, flags);
bdrv_reopen_multiple(bdrv_get_aio_context(bs), brq, &local_err);
diff --git a/tests/qemu-iotests/133 b/tests/qemu-iotests/133
index b9f17c996f..3cbe72c42b 100755
--- a/tests/qemu-iotests/133
+++ b/tests/qemu-iotests/133
@@ -98,6 +98,15 @@ echo
$QEMU_IO -c 'reopen -o read-only=foo' $TEST_IMG
+echo
+echo "=== Check that mixing -c/-r/-w and their corresponding options is
forbidden ==="
+echo
+
+$QEMU_IO -c 'reopen -r -o read-only=on' $TEST_IMG
+$QEMU_IO -c 'reopen -w -o read-only=on' $TEST_IMG
+$QEMU_IO -c 'reopen -c none -o cache.direct=on' $TEST_IMG
+$QEMU_IO -c 'reopen -c writeback -o cache.direct=on' $TEST_IMG
+$QEMU_IO -c 'reopen -c directsync -o cache.no-flush=on' $TEST_IMG
# success, all done
echo "*** done"
rm -f $seq.full
diff --git a/tests/qemu-iotests/133.out b/tests/qemu-iotests/133.out
index 570f623b6b..aa8cf19f9e 100644
--- a/tests/qemu-iotests/133.out
+++ b/tests/qemu-iotests/133.out
@@ -28,4 +28,12 @@ format name: null-co
=== Check that invalid options are handled correctly ===
Parameter 'read-only' expects 'on' or 'off'
+
+=== Check that mixing -c/-r/-w and their corresponding options is forbidden ===
+
+Cannot set both -r/-w and 'read-only'
+Cannot set both -r/-w and 'read-only'
+Cannot set both -c and the cache options
+Cannot set both -c and the cache options
+Cannot set both -c and the cache options
*** done
--
2.11.0
- [Qemu-block] [PATCH v2 00/14] Don't pass flags to bdrv_reopen_queue(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 09/14] block: Use bdrv_reopen_set_read_only() in the mirror driver, Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 02/14] block: Add bdrv_reopen_set_read_only(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 11/14] qemu-io: Put flag changes in the options QDict in reopen_f(),
Alberto Garcia <=
- [Qemu-block] [PATCH v2 08/14] block: Use bdrv_reopen_set_read_only() in external_snapshot_commit(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 07/14] block: Use bdrv_reopen_set_read_only() in qmp_change_backing_file(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 05/14] block: Use bdrv_reopen_set_read_only() in bdrv_commit(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 03/14] block: Use bdrv_reopen_set_read_only() in bdrv_backing_update_filename(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 01/14] block: Don't call update_flags_from_options() if the options are wrong, Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 06/14] block: Use bdrv_reopen_set_read_only() in stream_start/complete(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 04/14] block: Use bdrv_reopen_set_read_only() in commit_start/complete(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 10/14] block: Drop bdrv_reopen(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 13/14] block: Remove flags parameter from bdrv_reopen_queue(), Alberto Garcia, 2018/10/17
- [Qemu-block] [PATCH v2 14/14] block: Stop passing flags to bdrv_reopen_queue_child(), Alberto Garcia, 2018/10/17