[PATCH 04/11] virsh: Introduce vcpudirtylimit api
From: Hyman Huang(黄勇) <huangy81(a)chinatelecom.cn>
Introduce vcpudirtylimit virsh api to set dirty page
rate limit for virtual CPUs:
$ virsh vcpudirtylimit <domain> <rate> [--vcpu <number>]
Signed-off-by: Hyman Huang(黄勇) <huangy81(a)chinatelecom.cn>
---
tools/virsh-domain.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 451f51d..95104b2 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -13763,6 +13763,83 @@ cmdDomDirtyRateCalc(vshControl *ctl, const vshCmd *cmd)
return true;
}
+/*
+ * "vcpudirtylimit" command
+ */
+static const vshCmdInfo info_vcpu_dirty_limit[] = {
+ {.name = "help",
+ .data = N_("Set vcpu dirty page rate limit.")
+ },
+ {.name = "desc",
+ .data = N_("Set dirty page rate limit on virtual CPU.")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_vcpu_dirty_limit[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "rate",
+ .type = VSH_OT_INT,
+ .flags = VSH_OFLAG_REQ,
+ .help = N_("Upper limit of dirty page rate (MB/s) for "
+ "virtual CPUs.")
+ },
+ {.name = "vcpu",
+ .type = VSH_OT_INT,
+ .help = N_("Index of a virtual CPU.")
+ },
+ {.name = NULL}
+};
+
+static bool
+cmdVcpuDirtyLimit(vshControl *ctl, const vshCmd *cmd)
+{
+ g_autoptr(virshDomain) dom = NULL;
+ int vcpu_idx = -1;
+ unsigned long long rate = 0;
+ bool vcpu = vshCommandOptBool(cmd, "vcpu");
+ unsigned int flags = 0;
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ return false;
+
+ if (vcpu) {
+ if (vshCommandOptInt(ctl, cmd, "vcpu", &vcpu_idx) < 0)
+ return false;
+
+ if (vcpu_idx < 0) {
+ vshError(ctl, "%s", _("Invalid vcpu index, using --vcpu
"
+ "to specify cpu index"));
+ return false;
+ }
+ }
+
+ if (vshCommandOptULongLong(ctl, cmd, "rate", &rate) < 0)
+ return false;
+
+ if (!rate) {
+ vshError(ctl, "%s", _("Invalid dirty page rate limit"));
+ return false;
+ }
+
+ if (vcpu) {
+ /* set specified vcpu dirty page rate limit of vm */
+ if (virDomainSetVcpuDirtyLimit(dom, vcpu_idx,
+ rate, flags | VIR_DOMAIN_DIRTYLIMIT_VCPU) < 0)
+ return false;
+ vshPrintExtra(ctl, _("Set vcpu[%d] dirty page rate limit "
+ "%lld successfully.\n"), vcpu_idx, rate);
+ } else {
+ /* set all vcpu dirty page rate limit of vm */
+ if (virDomainSetVcpuDirtyLimit(dom, -1,
+ rate, flags | VIR_DOMAIN_DIRTYLIMIT_ALL) < 0)
+ return false;
+ vshPrintExtra(ctl, _("Set dirty page rate limit %lld on all "
+ "virtual CPUs successfully.\n"), rate);
+ }
+
+ return true;
+}
const vshCmdDef domManagementCmds[] = {
{.name = "attach-device",
@@ -14421,5 +14498,11 @@ const vshCmdDef domManagementCmds[] = {
.info = info_domdirtyrate_calc,
.flags = 0
},
+ {.name = "vcpudirtylimit",
+ .handler = cmdVcpuDirtyLimit,
+ .opts = opts_vcpu_dirty_limit,
+ .info = info_vcpu_dirty_limit,
+ .flags = 0
+ },
{.name = NULL}
};
--
1.8.3.1