[PATCH RFC v3 15/16] virsh: Add support for throttle group operations

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From: Chun Feng Wu <wucf@xxxxxxxxxxxxx>

* Add new cmds: throttlegroupset, throttlegrouplist, throttlegroupinfo, throttlegroupdel

Signed-off-by: Chun Feng Wu <wucf@xxxxxxxxxxxxx>
---
 tools/virsh-domain.c | 428 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 428 insertions(+)

diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 50e80689a2..f84a65451a 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -1509,6 +1509,410 @@ cmdBlkdeviotune(vshControl *ctl, const vshCmd *cmd)
     goto cleanup;
 }
 
+
+/*
+ * "throttlegrouplist" command
+ */
+static const vshCmdInfo info_throttlegrouplist = {
+    .help = N_("list all domain throttlegroups."),
+    .desc = N_("Get the summary of throttle groups for a domain."),
+};
+
+
+static const vshCmdOptDef opts_throttlegrouplist[] = {
+    VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+    {.name = "inactive",
+     .type = VSH_OT_BOOL,
+     .help = N_("get inactive rather than running configuration")
+    },
+    {.name = NULL}
+};
+
+
+static bool
+cmdThrottleGroupList(vshControl *ctl,
+                     const vshCmd *cmd)
+{
+    unsigned int flags = 0;
+    size_t i;
+    g_autoptr(xmlDoc) xml = NULL;
+    g_autoptr(xmlXPathContext) ctxt = NULL;
+    g_autofree xmlNodePtr *groups = NULL;
+    ssize_t ngroups;
+    g_autoptr(vshTable) table = NULL;
+
+    if (vshCommandOptBool(cmd, "inactive"))
+        flags |= VIR_DOMAIN_XML_INACTIVE;
+
+    if (virshDomainGetXML(ctl, cmd, flags, &xml, &ctxt) < 0)
+        return false;
+
+    ngroups = virXPathNodeSet("./throttlegroups/throttlegroup", ctxt, &groups);
+    if (ngroups < 0)
+        return false;
+
+    table = vshTableNew(_("Name"), NULL);
+
+    if (!table)
+        return false;
+
+    for (i = 0; i < ngroups; i++) {
+        g_autofree char *name = NULL;
+        ctxt->node = groups[i];
+        name = virXPathString("string(./group_name)", ctxt);
+        if (vshTableRowAppend(table, name, NULL) < 0)
+            return false;
+    }
+
+    vshTablePrintToStdout(table, ctl);
+
+    return true;
+}
+
+
+/*
+ * "throttlegroupset" command
+ */
+static const vshCmdInfo info_throttlegroupset = {
+    .help = N_("Add or update a throttling group."),
+    .desc = N_("Add or updte a throttling group."),
+};
+
+
+static const vshCmdOptDef opts_throttlegroupset[] = {
+    VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+    {.name = "group-name",
+     .type = VSH_OT_STRING,
+     .positional = true,
+     .required = true,
+     .completer = virshCompleteEmpty,
+     .help = N_("throttle group name")
+    },
+    {.name = "total-bytes-sec",
+     .type = VSH_OT_INT,
+     .help = N_("total throughput limit, as scaled integer (default bytes)")
+    },
+    {.name = "read-bytes-sec",
+     .type = VSH_OT_INT,
+     .help = N_("read throughput limit, as scaled integer (default bytes)")
+    },
+    {.name = "write-bytes-sec",
+     .type = VSH_OT_INT,
+     .help =  N_("write throughput limit, as scaled integer (default bytes)")
+    },
+    {.name = "total-iops-sec",
+     .type = VSH_OT_INT,
+     .help = N_("total I/O operations limit per second")
+    },
+    {.name = "read-iops-sec",
+     .type = VSH_OT_INT,
+     .help = N_("read I/O operations limit per second")
+    },
+    {.name = "write-iops-sec",
+     .type = VSH_OT_INT,
+     .help = N_("write I/O operations limit per second")
+    },
+    {.name = "total-bytes-sec-max",
+     .type = VSH_OT_INT,
+     .help = N_("total max, as scaled integer (default bytes)")
+    },
+    {.name = "read-bytes-sec-max",
+     .type = VSH_OT_INT,
+     .help = N_("read max, as scaled integer (default bytes)")
+    },
+    {.name = "write-bytes-sec-max",
+     .type = VSH_OT_INT,
+     .help = N_("write max, as scaled integer (default bytes)")
+    },
+    {.name = "total-iops-sec-max",
+     .type = VSH_OT_INT,
+     .help = N_("total I/O operations max")
+    },
+    {.name = "read-iops-sec-max",
+     .type = VSH_OT_INT,
+     .help = N_("read I/O operations max")
+    },
+    {.name = "write-iops-sec-max",
+     .type = VSH_OT_INT,
+     .help = N_("write I/O operations max")
+    },
+    {.name = "size-iops-sec",
+     .type = VSH_OT_INT,
+     .help = N_("I/O size in bytes")
+    },
+    {.name = "total-bytes-sec-max-length",
+     .type = VSH_OT_INT,
+     .help = N_("duration in seconds to allow total max bytes")
+    },
+    {.name = "read-bytes-sec-max-length",
+     .type = VSH_OT_INT,
+     .help = N_("duration in seconds to allow read max bytes")
+    },
+    {.name = "write-bytes-sec-max-length",
+     .type = VSH_OT_INT,
+     .help = N_("duration in seconds to allow write max bytes")
+    },
+    {.name = "total-iops-sec-max-length",
+     .type = VSH_OT_INT,
+     .help = N_("duration in seconds to allow total I/O operations max")
+    },
+    {.name = "read-iops-sec-max-length",
+     .type = VSH_OT_INT,
+     .help = N_("duration in seconds to allow read I/O operations max")
+    },
+    {.name = "write-iops-sec-max-length",
+     .type = VSH_OT_INT,
+     .help = N_("duration in seconds to allow write I/O operations max")
+    },
+    VIRSH_COMMON_OPT_DOMAIN_CONFIG,
+    VIRSH_COMMON_OPT_DOMAIN_LIVE,
+    VIRSH_COMMON_OPT_DOMAIN_CURRENT,
+    {.name = NULL}
+};
+
+
+static bool
+cmdThrottleGroupSet(vshControl *ctl,
+                    const vshCmd *cmd)
+{
+    g_autoptr(virshDomain) dom = NULL;
+    const char *name;
+    const char *group_name = NULL;
+    unsigned long long value;
+    int nparams = 0;
+    int maxparams = 0;
+    virTypedParameterPtr params = NULL;
+    unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT;
+    int rv = 0;
+    bool current = vshCommandOptBool(cmd, "current");
+    bool config = vshCommandOptBool(cmd, "config");
+    bool live = vshCommandOptBool(cmd, "live");
+    bool ret = false;
+
+    VSH_EXCLUSIVE_OPTIONS_VAR(current, live);
+    VSH_EXCLUSIVE_OPTIONS_VAR(current, config);
+
+    if (config)
+        flags |= VIR_DOMAIN_AFFECT_CONFIG;
+    if (live)
+        flags |= VIR_DOMAIN_AFFECT_LIVE;
+
+    if (!(dom = virshCommandOptDomain(ctl, cmd, &name)))
+        goto cleanup;
+
+
+#define VSH_SET_THROTTLE_GROUP_SCALED(PARAM, CONST) \
+    if ((rv = vshCommandOptScaledInt(ctl, cmd, #PARAM, &value, \
+                                     1, ULLONG_MAX)) < 0) { \
+        goto interror; \
+    } else if (rv > 0) { \
+        if (virTypedParamsAddULLong(&params, &nparams, &maxparams, \
+                                    VIR_DOMAIN_BLOCK_IOTUNE_##CONST, \
+                                    value) < 0) \
+            goto save_error; \
+    }
+
+    VSH_SET_THROTTLE_GROUP_SCALED(total-bytes-sec, TOTAL_BYTES_SEC);
+    VSH_SET_THROTTLE_GROUP_SCALED(read-bytes-sec, READ_BYTES_SEC);
+    VSH_SET_THROTTLE_GROUP_SCALED(write-bytes-sec, WRITE_BYTES_SEC);
+    VSH_SET_THROTTLE_GROUP_SCALED(total-bytes-sec-max, TOTAL_BYTES_SEC_MAX);
+    VSH_SET_THROTTLE_GROUP_SCALED(read-bytes-sec-max, READ_BYTES_SEC_MAX);
+    VSH_SET_THROTTLE_GROUP_SCALED(write-bytes-sec-max, WRITE_BYTES_SEC_MAX);
+#undef VSH_SET_THROTTLE_GROUP_SCALED
+
+#define VSH_SET_THROTTLE_GROUP(PARAM, CONST) \
+    if ((rv = vshCommandOptULongLong(ctl, cmd, #PARAM, &value)) < 0) { \
+        goto interror; \
+    } else if (rv > 0) { \
+        if (virTypedParamsAddULLong(&params, &nparams, &maxparams, \
+                                    VIR_DOMAIN_BLOCK_IOTUNE_##CONST, \
+                                    value) < 0) \
+            goto save_error; \
+    }
+
+    VSH_SET_THROTTLE_GROUP(total-iops-sec, TOTAL_IOPS_SEC);
+    VSH_SET_THROTTLE_GROUP(read-iops-sec, READ_IOPS_SEC);
+    VSH_SET_THROTTLE_GROUP(write-iops-sec, WRITE_IOPS_SEC);
+    VSH_SET_THROTTLE_GROUP(total-iops-sec-max, TOTAL_IOPS_SEC_MAX);
+    VSH_SET_THROTTLE_GROUP(read-iops-sec-max, READ_IOPS_SEC_MAX);
+    VSH_SET_THROTTLE_GROUP(write-iops-sec-max, WRITE_IOPS_SEC_MAX);
+    VSH_SET_THROTTLE_GROUP(size-iops-sec, SIZE_IOPS_SEC);
+
+    VSH_SET_THROTTLE_GROUP(total-bytes-sec-max-length, TOTAL_BYTES_SEC_MAX_LENGTH);
+    VSH_SET_THROTTLE_GROUP(read-bytes-sec-max-length, READ_BYTES_SEC_MAX_LENGTH);
+    VSH_SET_THROTTLE_GROUP(write-bytes-sec-max-length, WRITE_BYTES_SEC_MAX_LENGTH);
+    VSH_SET_THROTTLE_GROUP(total-iops-sec-max-length, TOTAL_IOPS_SEC_MAX_LENGTH);
+    VSH_SET_THROTTLE_GROUP(read-iops-sec-max-length, READ_IOPS_SEC_MAX_LENGTH);
+    VSH_SET_THROTTLE_GROUP(write-iops-sec-max-length, WRITE_IOPS_SEC_MAX_LENGTH);
+#undef VSH_SET_THROTTLE_GROUP
+
+    if (vshCommandOptString(ctl, cmd, "group-name", &group_name) < 0) {
+        goto cleanup;
+    }
+
+    if (group_name) {
+        if (virTypedParamsAddString(&params, &nparams, &maxparams,
+                                    VIR_DOMAIN_BLOCK_IOTUNE_GROUP_NAME,
+                                    group_name) < 0)
+            goto save_error;
+    }
+
+    if (virDomainSetThrottleGroup(dom, group_name, params, nparams, flags) < 0)
+        goto error;
+    vshPrintExtra(ctl, "%s", _("Throttle group set successfully\n"));
+
+    ret = true;
+
+ cleanup:
+    virTypedParamsFree(params, nparams);
+    return ret;
+
+ save_error:
+    vshSaveLibvirtError();
+ error:
+    vshError(ctl, "%s", _("Unable to change throttle group"));
+    goto cleanup;
+
+ interror:
+    vshError(ctl, "%s", _("Unable to parse integer parameter"));
+    goto cleanup;
+}
+
+
+/*
+ * "throttlegroupdel" command
+ */
+static const vshCmdInfo info_throttlegroupdel = {
+    .help = N_("Delete a throttling group."),
+    .desc = N_("Delete a throttling group."),
+};
+
+
+static const vshCmdOptDef opts_throttlegroupdel[] = {
+    VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+    {.name = "group-name",
+     .type = VSH_OT_STRING,
+     .positional = true,
+     .required = true,
+     .completer = virshCompleteEmpty,
+     .help = N_("throttle group name")
+    },
+    VIRSH_COMMON_OPT_DOMAIN_CONFIG,
+    VIRSH_COMMON_OPT_DOMAIN_LIVE,
+    VIRSH_COMMON_OPT_DOMAIN_CURRENT,
+    {.name = NULL}
+};
+
+
+static bool
+cmdThrottleGroupDel(vshControl *ctl,
+                    const vshCmd *cmd)
+{
+    g_autoptr(virshDomain) dom = NULL;
+    const char *group_name = NULL;
+    bool config = vshCommandOptBool(cmd, "config");
+    bool live = vshCommandOptBool(cmd, "live");
+    bool current = vshCommandOptBool(cmd, "current");
+    unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT;
+
+    VSH_EXCLUSIVE_OPTIONS_VAR(current, live);
+    VSH_EXCLUSIVE_OPTIONS_VAR(current, config);
+
+    if (config)
+        flags |= VIR_DOMAIN_AFFECT_CONFIG;
+    if (live)
+        flags |= VIR_DOMAIN_AFFECT_LIVE;
+
+    if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+        return false;
+
+    if (vshCommandOptString(ctl, cmd, "group-name", &group_name) < 0) {
+        return false;
+    }
+
+    if (virDomainDelThrottleGroup(dom, group_name, flags) < 0)
+        return false;
+    vshPrintExtra(ctl, "%s", _("Throttle group deleted successfully\n"));
+
+    return true;
+}
+
+
+/*
+ * "throttlegroupinfo" command
+ */
+static const vshCmdInfo info_throttlegroupinfo = {
+    .help = N_("Get a throttling group."),
+    .desc = N_("Get a throttling group."),
+};
+
+
+static const vshCmdOptDef opts_throttlegroupinfo[] = {
+    VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+    {.name = "group-name",
+     .type = VSH_OT_STRING,
+     .positional = true,
+     .required = true,
+     .completer = virshCompleteEmpty,
+     .help = N_("throttle group name")
+    },
+    VIRSH_COMMON_OPT_DOMAIN_CONFIG,
+    VIRSH_COMMON_OPT_DOMAIN_LIVE,
+    VIRSH_COMMON_OPT_DOMAIN_CURRENT,
+    {.name = NULL}
+};
+
+
+static bool
+cmdThrottleGroupInfo(vshControl *ctl,
+                     const vshCmd *cmd)
+{
+    g_autoptr(virshDomain) dom = NULL;
+    const char *name;
+    const char *group_name = NULL;
+    int nparams = 0;
+    virTypedParameterPtr params = NULL;
+    unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT;
+    size_t i;
+    bool current = vshCommandOptBool(cmd, "current");
+    bool config = vshCommandOptBool(cmd, "config");
+    bool live = vshCommandOptBool(cmd, "live");
+    bool ret = false;
+
+    VSH_EXCLUSIVE_OPTIONS_VAR(current, live);
+    VSH_EXCLUSIVE_OPTIONS_VAR(current, config);
+
+    if (config)
+        flags |= VIR_DOMAIN_AFFECT_CONFIG;
+    if (live)
+        flags |= VIR_DOMAIN_AFFECT_LIVE;
+
+    if (!(dom = virshCommandOptDomain(ctl, cmd, &name)))
+        goto cleanup;
+
+    if (vshCommandOptString(ctl, cmd, "group-name", &group_name) < 0) {
+        goto cleanup;
+    }
+
+    if (virDomainGetThrottleGroup(dom, group_name, &params, &nparams, flags) != 0) {
+        vshError(ctl, "%s",
+                    _("Unable to get throttle group parameters"));
+        goto cleanup;
+    }
+
+    for (i = 0; i < nparams; i++) {
+        g_autofree char *str = vshGetTypedParamValue(ctl, &params[i]);
+        vshPrint(ctl, "%-15s: %s\n", params[i].field, str);
+    }
+
+    ret = true;
+
+ cleanup:
+    virTypedParamsFree(params, nparams);
+    return ret;
+}
+
+
 /*
  * "blkiotune" command
  */
@@ -13378,6 +13782,30 @@ const vshCmdDef domManagementCmds[] = {
      .info = &info_blkdeviotune,
      .flags = 0
     },
+    {.name = "throttlegroupset",
+     .handler = cmdThrottleGroupSet,
+     .opts = opts_throttlegroupset,
+     .info = &info_throttlegroupset,
+     .flags = 0
+    },
+    {.name = "throttlegroupdel",
+     .handler = cmdThrottleGroupDel,
+     .opts = opts_throttlegroupdel,
+     .info = &info_throttlegroupdel,
+     .flags = 0
+    },
+    {.name = "throttlegroupinfo",
+     .handler = cmdThrottleGroupInfo,
+     .opts = opts_throttlegroupinfo,
+     .info = &info_throttlegroupinfo,
+     .flags = 0
+    },
+    {.name = "throttlegrouplist",
+     .handler = cmdThrottleGroupList,
+     .opts = opts_throttlegrouplist,
+     .info = &info_throttlegrouplist,
+     .flags = 0
+    },
     {.name = "blkiotune",
      .handler = cmdBlkiotune,
      .opts = opts_blkiotune,
-- 
2.34.1



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