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-rw-r--r--block/mirror.c31
-rw-r--r--qapi/block-core.json16
-rw-r--r--tests/qemu-iotests/109.out24
3 files changed, 50 insertions, 21 deletions
diff --git a/block/mirror.c b/block/mirror.c
index 4016d89253..c839542774 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -61,8 +61,12 @@ typedef struct MirrorBlockJob {
*/
MirrorCopyMode copy_mode;
BlockdevOnError on_source_error, on_target_error;
- /* Set when the target is synced (dirty bitmap is clean, nothing
- * in flight) and the job is running in active mode */
+ /*
+ * To be accessed with atomics.
+ *
+ * Set when the target is synced (dirty bitmap is clean, nothing in flight)
+ * and the job is running in active mode.
+ */
bool actively_synced;
bool should_complete;
int64_t granularity;
@@ -126,7 +130,7 @@ typedef enum MirrorMethod {
static BlockErrorAction mirror_error_action(MirrorBlockJob *s, bool read,
int error)
{
- s->actively_synced = false;
+ qatomic_set(&s->actively_synced, false);
if (read) {
return block_job_error_action(&s->common, s->on_source_error,
true, error);
@@ -966,7 +970,7 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
if (s->bdev_length == 0) {
/* Transition to the READY state and wait for complete. */
job_transition_to_ready(&s->common.job);
- s->actively_synced = true;
+ qatomic_set(&s->actively_synced, true);
while (!job_cancel_requested(&s->common.job) && !s->should_complete) {
job_yield(&s->common.job);
}
@@ -1080,7 +1084,7 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
job_transition_to_ready(&s->common.job);
}
if (qatomic_read(&s->copy_mode) != MIRROR_COPY_MODE_BACKGROUND) {
- s->actively_synced = true;
+ qatomic_set(&s->actively_synced, true);
}
should_complete = s->should_complete ||
@@ -1283,6 +1287,15 @@ static void mirror_change(BlockJob *job, BlockJobChangeOptions *opts,
}
}
+static void mirror_query(BlockJob *job, BlockJobInfo *info)
+{
+ MirrorBlockJob *s = container_of(job, MirrorBlockJob, common);
+
+ info->u.mirror = (BlockJobInfoMirror) {
+ .actively_synced = qatomic_read(&s->actively_synced),
+ };
+}
+
static const BlockJobDriver mirror_job_driver = {
.job_driver = {
.instance_size = sizeof(MirrorBlockJob),
@@ -1298,6 +1311,7 @@ static const BlockJobDriver mirror_job_driver = {
},
.drained_poll = mirror_drained_poll,
.change = mirror_change,
+ .query = mirror_query,
};
static const BlockJobDriver commit_active_job_driver = {
@@ -1416,7 +1430,7 @@ do_sync_target_write(MirrorBlockJob *job, MirrorMethod method,
bitmap_end = QEMU_ALIGN_UP(offset + bytes, job->granularity);
bdrv_set_dirty_bitmap(job->dirty_bitmap, bitmap_offset,
bitmap_end - bitmap_offset);
- job->actively_synced = false;
+ qatomic_set(&job->actively_synced, false);
action = mirror_error_action(job, false, -ret);
if (action == BLOCK_ERROR_ACTION_REPORT) {
@@ -1475,7 +1489,8 @@ static void coroutine_fn GRAPH_RDLOCK active_write_settle(MirrorOp *op)
uint64_t end_chunk = DIV_ROUND_UP(op->offset + op->bytes,
op->s->granularity);
- if (!--op->s->in_active_write_counter && op->s->actively_synced) {
+ if (!--op->s->in_active_write_counter &&
+ qatomic_read(&op->s->actively_synced)) {
BdrvChild *source = op->s->mirror_top_bs->backing;
if (QLIST_FIRST(&source->bs->parents) == source &&
@@ -1539,7 +1554,7 @@ bdrv_mirror_top_do_write(BlockDriverState *bs, MirrorMethod method,
}
if (!copy_to_target && s->job && s->job->dirty_bitmap) {
- s->job->actively_synced = false;
+ qatomic_set(&s->job->actively_synced, false);
bdrv_set_dirty_bitmap(s->job->dirty_bitmap, offset, bytes);
}
diff --git a/qapi/block-core.json b/qapi/block-core.json
index dca0e94bb0..99961256f2 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1353,6 +1353,20 @@
'data': ['background', 'write-blocking'] }
##
+# @BlockJobInfoMirror:
+#
+# Information specific to mirror block jobs.
+#
+# @actively-synced: Whether the source is actively synced to the
+# target, i.e. same data and new writes are done synchronously to
+# both.
+#
+# Since 8.2
+##
+{ 'struct': 'BlockJobInfoMirror',
+ 'data': { 'actively-synced': 'bool' } }
+
+##
# @BlockJobInfo:
#
# Information about a long-running block device operation.
@@ -1403,7 +1417,7 @@
'auto-finalize': 'bool', 'auto-dismiss': 'bool',
'*error': 'str' },
'discriminator': 'type',
- 'data': {} }
+ 'data': { 'mirror': 'BlockJobInfoMirror' } }
##
# @query-block-jobs:
diff --git a/tests/qemu-iotests/109.out b/tests/qemu-iotests/109.out
index 2611d6a40f..965c9a6a0a 100644
--- a/tests/qemu-iotests/109.out
+++ b/tests/qemu-iotests/109.out
@@ -38,7 +38,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 1024, "offset": 1024, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 1024, "offset": 1024, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 1024, "offset": 1024, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -90,7 +90,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 197120, "offset": 197120, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 197120, "offset": 197120, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 197120, "offset": 197120, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -142,7 +142,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 327680, "offset": 327680, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 327680, "offset": 327680, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 327680, "offset": 327680, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -194,7 +194,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 1024, "offset": 1024, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 1024, "offset": 1024, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 1024, "offset": 1024, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -246,7 +246,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 65536, "offset": 65536, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 65536, "offset": 65536, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 65536, "offset": 65536, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -298,7 +298,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 2560, "offset": 2560, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 2560, "offset": 2560, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 2560, "offset": 2560, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -349,7 +349,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 2560, "offset": 2560, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 2560, "offset": 2560, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 2560, "offset": 2560, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -400,7 +400,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 31457280, "offset": 31457280, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 31457280, "offset": 31457280, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 31457280, "offset": 31457280, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -451,7 +451,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 327680, "offset": 327680, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 327680, "offset": 327680, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 327680, "offset": 327680, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -502,7 +502,7 @@ read 512/512 bytes at offset 0
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 2048, "offset": 2048, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 2048, "offset": 2048, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 2048, "offset": 2048, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -533,7 +533,7 @@ WARNING: Image format was not specified for 'TEST_DIR/t.raw' and probing guessed
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 512, "offset": 512, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 512, "offset": 512, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 512, "offset": 512, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
@@ -557,7 +557,7 @@ Images are identical.
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "ready", "id": "src"}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "src", "len": 512, "offset": 512, "speed": 0, "type": "mirror"}}
{"execute":"query-block-jobs"}
-{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 512, "offset": 512, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror"}]}
+{"return": [{"auto-finalize": true, "io-status": "ok", "device": "src", "auto-dismiss": true, "busy": false, "len": 512, "offset": 512, "status": "ready", "paused": false, "speed": 0, "ready": true, "type": "mirror", "actively-synced": false}]}
{"execute":"quit"}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-23 05:06:19 +0000