[libvirt] [PATCH v3 REBASE v2 1/2] qemu: prepare blockjob complete event error usage
Nikolay Shirokovskiy
nshirokovskiy at virtuozzo.com
Fri Oct 27 12:37:22 UTC 2017
This patch pass event error up to the place where we can
use it. Error is passed only for sync blockjob event mode
as we can't use the error in async mode. In async mode we
just pass the event details to the client thru event API
but current blockjob event API can not carry extra parameter.
---
src/qemu/qemu_blockjob.c | 2 ++
src/qemu/qemu_domain.c | 10 +++++++++-
src/qemu/qemu_domain.h | 1 +
src/qemu/qemu_monitor.c | 5 +++--
src/qemu/qemu_monitor.h | 4 +++-
src/qemu/qemu_monitor_json.c | 4 +++-
src/qemu/qemu_process.c | 4 ++++
7 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/src/qemu/qemu_blockjob.c b/src/qemu/qemu_blockjob.c
index c1b46f7..a85ae94 100644
--- a/src/qemu/qemu_blockjob.c
+++ b/src/qemu/qemu_blockjob.c
@@ -35,6 +35,7 @@
#include "virthread.h"
#include "virtime.h"
#include "locking/domain_lock.h"
+#include "viralloc.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
@@ -66,6 +67,7 @@ qemuBlockJobUpdate(virQEMUDriverPtr driver,
diskPriv->blockJobType,
diskPriv->blockJobStatus);
diskPriv->blockJobStatus = -1;
+ VIR_FREE(diskPriv->blockJobError);
}
return status;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 13e77ee..7298e9e 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -891,6 +891,7 @@ qemuDomainSecretInfoFree(qemuDomainSecretInfoPtr *secinfo)
static virClassPtr qemuDomainDiskPrivateClass;
+static void qemuDomainDiskPrivateDispose(void *obj);
static int
qemuDomainDiskPrivateOnceInit(void)
@@ -898,7 +899,7 @@ qemuDomainDiskPrivateOnceInit(void)
qemuDomainDiskPrivateClass = virClassNew(virClassForObject(),
"qemuDomainDiskPrivate",
sizeof(qemuDomainDiskPrivate),
- NULL);
+ qemuDomainDiskPrivateDispose);
if (!qemuDomainDiskPrivateClass)
return -1;
else
@@ -921,6 +922,13 @@ qemuDomainDiskPrivateNew(void)
return (virObjectPtr) priv;
}
+static void
+qemuDomainDiskPrivateDispose(void *obj)
+{
+ qemuDomainDiskPrivatePtr priv = obj;
+
+ VIR_FREE(priv->blockJobError);
+}
static virClassPtr qemuDomainStorageSourcePrivateClass;
static void qemuDomainStorageSourcePrivateDispose(void *obj);
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index ff53282..735e810 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -350,6 +350,7 @@ struct _qemuDomainDiskPrivate {
/* for some synchronous block jobs, we need to notify the owner */
int blockJobType; /* type of the block job from the event */
int blockJobStatus; /* status of the finished block job */
+ char *blockJobError; /* block job completed event error */
bool blockJobSync; /* the block job needs synchronized termination */
bool migrating; /* the disk is being migrated */
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index dd9d64a..a5e95be 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -1515,13 +1515,14 @@ int
qemuMonitorEmitBlockJob(qemuMonitorPtr mon,
const char *diskAlias,
int type,
- int status)
+ int status,
+ const char *error)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainBlockJob, mon->vm,
- diskAlias, type, status);
+ diskAlias, type, status, error);
return ret;
}
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index bc8494f..cbe5fa8 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -176,6 +176,7 @@ typedef int (*qemuMonitorDomainBlockJobCallback)(qemuMonitorPtr mon,
const char *diskAlias,
int type,
int status,
+ const char *error,
void *opaque);
typedef int (*qemuMonitorDomainTrayChangeCallback)(qemuMonitorPtr mon,
virDomainObjPtr vm,
@@ -375,7 +376,8 @@ int qemuMonitorEmitPMSuspend(qemuMonitorPtr mon);
int qemuMonitorEmitBlockJob(qemuMonitorPtr mon,
const char *diskAlias,
int type,
- int status);
+ int status,
+ const char *error);
int qemuMonitorEmitBalloonChange(qemuMonitorPtr mon,
unsigned long long actual);
int qemuMonitorEmitPMSuspendDisk(qemuMonitorPtr mon);
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 05cc634..53be827 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -851,6 +851,7 @@ qemuMonitorJSONHandleBlockJobImpl(qemuMonitorPtr mon,
{
const char *device;
const char *type_str;
+ const char *error = NULL;
int type = VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN;
unsigned long long offset, len;
@@ -883,6 +884,7 @@ qemuMonitorJSONHandleBlockJobImpl(qemuMonitorPtr mon,
switch ((virConnectDomainEventBlockJobStatus) event) {
case VIR_DOMAIN_BLOCK_JOB_COMPLETED:
+ error = virJSONValueObjectGetString(data, "error");
/* Make sure the whole device has been processed */
if (offset != len)
event = VIR_DOMAIN_BLOCK_JOB_FAILED;
@@ -897,7 +899,7 @@ qemuMonitorJSONHandleBlockJobImpl(qemuMonitorPtr mon,
}
out:
- qemuMonitorEmitBlockJob(mon, device, type, event);
+ qemuMonitorEmitBlockJob(mon, device, type, event, error);
}
static void
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index fdc8689..4bfad5d 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -1000,6 +1000,7 @@ qemuProcessHandleBlockJob(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
const char *diskAlias,
int type,
int status,
+ const char *error,
void *opaque)
{
virQEMUDriverPtr driver = opaque;
@@ -1021,6 +1022,9 @@ qemuProcessHandleBlockJob(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
/* We have a SYNC API waiting for this event, dispatch it back */
diskPriv->blockJobType = type;
diskPriv->blockJobStatus = status;
+ VIR_FREE(diskPriv->blockJobError);
+ if (error && VIR_STRDUP_QUIET(diskPriv->blockJobError, error) < 0)
+ VIR_WARN("Can not pass error message further: %s", error);
virDomainObjBroadcast(vm);
} else {
/* there is no waiting SYNC API, dispatch the update to a thread */
--
1.8.3.1
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