8:16 p.m.
I'll take these reviews in my next version. Thanks again!
On 2020/11/11 4:11, Michal Privoznik wrote:
On 11/7/20 10:41 AM, Hao Wang wrote:
> Implement qemuMonitorJSONExtractDirtyRateInfo to deal with the return from
> qmp "query-dirty-rate", and store them in virDomainDirtyRateInfo.
>
> Signed-off-by: Hao Wang <wanghao232(a)huawei.com>
> Reviewed-by: Chuan Zheng <zhengchuan(a)huawei.com>
> ---
> include/libvirt/libvirt-domain.h | 17 +++++++++
> src/qemu/qemu_monitor_json.c | 59 ++++++++++++++++++++++++++++++--
> 2 files changed, 73 insertions(+), 3 deletions(-)
>
> diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
> index b950736b67..51d8685086 100644
> --- a/include/libvirt/libvirt-domain.h
> +++ b/include/libvirt/libvirt-domain.h
> @@ -5096,6 +5096,23 @@ int virDomainBackupBegin(virDomainPtr domain,
> char *virDomainBackupGetXMLDesc(virDomainPtr domain,
> unsigned int flags);
> +/**
> + * virDomainDirtyRateStatus:
> + *
> + * Details on the cause of a dirtyrate calculation status.
> + */
> +
> +typedef enum {
> + VIR_DOMAIN_DIRTYRATE_UNSTARTED = 0, /* the dirtyrate calculation has not been
started */
> + VIR_DOMAIN_DIRTYRATE_MEASURING = 1, /* the dirtyrate calculation is measuring
*/
> + VIR_DOMAIN_DIRTYRATE_MEASURED = 2, /* the dirtyrate calculation is
> +completed */
> +
> +# ifdef VIR_ENUM_SENTINELS
> + VIR_DOMAIN_DIRTYRATE_LAST
> +# endif
> +} virDomainDirtyRateStatus;
> +
As advertised earlier, this doesn't belong into this commit really.
> /**
> * virDomainDirtyRateInfo:
> *
> diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
> index 1924c7229b..ca7d8d23c0 100644
> --- a/src/qemu/qemu_monitor_json.c
> +++ b/src/qemu/qemu_monitor_json.c
> @@ -9659,12 +9659,61 @@ qemuMonitorJSONCalculateDirtyRate(qemuMonitorPtr mon,
> }
> +VIR_ENUM_DECL(qemuDomainDirtyRateStatus);
> +VIR_ENUM_IMPL(qemuDomainDirtyRateStatus,
> + VIR_DOMAIN_DIRTYRATE_LAST,
> + "unstarted",
> + "measuring",
> + "measured");
> +
> +static int
> +qemuMonitorJSONExtractDirtyRateInfo(virJSONValuePtr data,
> + virDomainDirtyRateInfoPtr info)
> +{
> + const char *status;
> + int statusID;
> +
> + if (!(status = virJSONValueObjectGetString(data, "status"))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("query-dirty-rate reply was missing 'status'
data"));
> + return -1;
> + }
> +
> + if ((statusID = qemuDomainDirtyRateStatusTypeFromString(status)) < 0) {
> + return -1;
So if qemu sends us some other string, this fails silently.
> + }
> + info->status = statusID;
> +
> + if ((info->status == VIR_DOMAIN_DIRTYRATE_MEASURED) &&
> + (virJSONValueObjectGetNumberLong(data, "dirty-rate",
&(info->dirtyRate)) < 0)) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("query-dirty-rate reply was missing
'dirty-rate' data"));
> + return -1;
> + }
> +
> + if (virJSONValueObjectGetNumberLong(data, "start-time",
&(info->startTime)) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("query-dirty-rate reply was missing
'start-time' data"));
> + return -1;
> + }
> +
> + if (virJSONValueObjectGetNumberLong(data, "calc-time",
&(info->calcTime)) < 0) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("query-dirty-rate reply was missing
'calc-time' data"));
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> +
> int
> qemuMonitorJSONQueryDirtyRate(qemuMonitorPtr mon,
> virDomainDirtyRateInfoPtr info)
> {
> g_autoptr(virJSONValue) cmd = NULL;
> g_autoptr(virJSONValue) reply = NULL;
> + virJSONValuePtr data = NULL;
> if (!(cmd = qemuMonitorJSONMakeCommand("query-dirty-rate", NULL)))
> return -1;
> @@ -9675,7 +9724,11 @@ qemuMonitorJSONQueryDirtyRate(qemuMonitorPtr mon,
> if (qemuMonitorJSONCheckError(cmd, reply) < 0)
> return -1;
> - /* TODO: extract dirtyrate data from reply and store in
virDomainDirtyRateInfoPtr */
> - info->status = 0;
> - return 0;
> + if (!(data = virJSONValueObjectGetObject(reply, "return"))) {
> + virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("query-dirty-rate reply was missing 'return'
data"));
> + return -1;
> + }
> +
> + return qemuMonitorJSONExtractDirtyRateInfo(data, info);
> }
>
I think the following should be squashed in:
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 78ad10bc24..4715b33254 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -9680,24 +9680,26 @@ qemuMonitorJSONExtractDirtyRateInfo(virJSONValuePtr data,
}
if ((statusID = qemuDomainDirtyRateStatusTypeFromString(status)) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unknown dirty rate status: %s"), status);
return -1;
}
info->status = statusID;
if ((info->status == VIR_DOMAIN_DIRTYRATE_MEASURED) &&
- (virJSONValueObjectGetNumberLong(data, "dirty-rate",
&(info->dirtyRate)) < 0)) {
+ (virJSONValueObjectGetNumberLong(data, "dirty-rate",
&info->dirtyRate) < 0)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("query-dirty-rate reply was missing 'dirty-rate'
data"));
return -1;
}
- if (virJSONValueObjectGetNumberLong(data, "start-time",
&(info->startTime)) < 0) {
+ if (virJSONValueObjectGetNumberLong(data, "start-time",
&info->startTime) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("query-dirty-rate reply was missing 'start-time'
data"));
return -1;
}
- if (virJSONValueObjectGetNumberLong(data, "calc-time",
&(info->calcTime)) < 0) {
+ if (virJSONValueObjectGetNumberLong(data, "calc-time",
&info->calcTime) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("query-dirty-rate reply was missing 'calc-time'
data"));
return -1;
Michal
.