Disk image size data are not contained in the reply of query-blockstats
but need to be gathered from query-block. For use with -blockdev we
really need to call 'query-named-block-nodes' and process it to retrieve
the correct data.
This patch introduces qemuMonitorBlockStatsUpdateCapacityBlockdev which
updates the capacity data by nodename rather than device name.
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
src/qemu/qemu_monitor.c | 11 +++++++++++
src/qemu/qemu_monitor.h | 4 ++++
src/qemu/qemu_monitor_json.c | 46 ++++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_monitor_json.h | 2 ++
4 files changed, 63 insertions(+)
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index bc9c7d53b0..a69fbb0749 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -2339,6 +2339,17 @@ qemuMonitorBlockStatsUpdateCapacity(qemuMonitorPtr mon,
}
+int
+qemuMonitorBlockStatsUpdateCapacityBlockdev(qemuMonitorPtr mon,
+ virHashTablePtr stats)
+{
+ VIR_DEBUG("stats=%p", stats);
+
+ QEMU_CHECK_MONITOR(mon);
+
+ return qemuMonitorJSONBlockStatsUpdateCapacityBlockdev(mon, stats);
+}
+
int
qemuMonitorBlockResize(qemuMonitorPtr mon,
const char *device,
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 8ede11c82c..d1a8f899d7 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -603,6 +603,10 @@ int qemuMonitorBlockStatsUpdateCapacity(qemuMonitorPtr mon,
bool backingChain)
ATTRIBUTE_NONNULL(2);
+int qemuMonitorBlockStatsUpdateCapacityBlockdev(qemuMonitorPtr mon,
+ virHashTablePtr stats)
+ ATTRIBUTE_NONNULL(2);
+
int qemuMonitorBlockResize(qemuMonitorPtr mon,
const char *dev_name,
unsigned long long size);
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 02a3f09a8b..820e669d16 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -2639,6 +2639,52 @@ qemuMonitorJSONBlockStatsUpdateCapacity(qemuMonitorPtr mon,
}
+static int
+qemuMonitorJSONBlockStatsUpdateCapacityBlockdevWorker(size_t pos ATTRIBUTE_UNUSED,
+ virJSONValuePtr val,
+ void *opaque)
+{
+ virHashTablePtr stats = opaque;
+ virJSONValuePtr image;
+ const char *nodename;
+
+ if (!(nodename = virJSONValueObjectGetString(val, "node-name")) ||
+ !(image = virJSONValueObjectGetObject(val, "image"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-named-block-nodes entry was not in expected format"));
+ return -1;
+ }
+
+ if (qemuMonitorJSONBlockStatsUpdateCapacityData(image, nodename, stats) < 0)
+ return -1;
+
+ return 1; /* we don't want to steal the value from the JSON array */
+}
+
+
+int
+qemuMonitorJSONBlockStatsUpdateCapacityBlockdev(qemuMonitorPtr mon,
+ virHashTablePtr stats)
+{
+ virJSONValuePtr nodes;
+ int ret = -1;
+
+ if (!(nodes = qemuMonitorJSONQueryNamedBlockNodes(mon)))
+ return -1;
+
+ if (virJSONValueArrayForeachSteal(nodes,
+ qemuMonitorJSONBlockStatsUpdateCapacityBlockdevWorker,
+ stats) < 0)
+ goto cleanup;
+
+ ret = 0;
+
+ cleanup:
+ virJSONValueFree(nodes);
+ return ret;
+}
+
+
/* Return 0 on success, -1 on failure, or -2 if not supported. Size
* is in bytes. */
int qemuMonitorJSONBlockResize(qemuMonitorPtr mon,
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index 6042f7161f..ebf4d4e78b 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -95,6 +95,8 @@ int qemuMonitorJSONGetAllBlockStatsInfo(qemuMonitorPtr mon,
int qemuMonitorJSONBlockStatsUpdateCapacity(qemuMonitorPtr mon,
virHashTablePtr stats,
bool backingChain);
+int qemuMonitorJSONBlockStatsUpdateCapacityBlockdev(qemuMonitorPtr mon,
+ virHashTablePtr stats);
int qemuMonitorJSONGetBlockStatsInfo(qemuMonitorPtr mon,
virHashTablePtr hash,
int *nstats);
--
2.16.2
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list
