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virsh: add parameters --live, --config and --current to cmd schedinfo
This enables user to modify cpu.shares even when domain is inactive.
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parent
bb9f1bbf4a
commit
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@ -1596,6 +1596,9 @@ static const vshCmdOptDef opts_schedinfo[] = {
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{"set", VSH_OT_STRING, VSH_OFLAG_NONE, N_("parameter=value")},
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{"set", VSH_OT_STRING, VSH_OFLAG_NONE, N_("parameter=value")},
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{"weight", VSH_OT_INT, VSH_OFLAG_NONE, N_("weight for XEN_CREDIT")},
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{"weight", VSH_OT_INT, VSH_OFLAG_NONE, N_("weight for XEN_CREDIT")},
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{"cap", VSH_OT_INT, VSH_OFLAG_NONE, N_("cap for XEN_CREDIT")},
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{"cap", VSH_OT_INT, VSH_OFLAG_NONE, N_("cap for XEN_CREDIT")},
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{"current", VSH_OT_BOOL, 0, N_("get/set current scheduler info")},
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{"config", VSH_OT_BOOL, 0, N_("get/set value to be used on next boot")},
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{"live", VSH_OT_BOOL, 0, N_("get/set value from running domain")},
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{NULL, 0, 0, NULL}
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{NULL, 0, 0, NULL}
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};
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};
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@ -1703,6 +1706,23 @@ cmdSchedinfo(vshControl *ctl, const vshCmd *cmd)
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int update = 0;
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int update = 0;
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int i, ret;
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int i, ret;
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bool ret_val = false;
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bool ret_val = false;
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unsigned int flags = 0;
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int current = vshCommandOptBool(cmd, "current");
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int config = vshCommandOptBool(cmd, "config");
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int live = vshCommandOptBool(cmd, "live");
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if (current) {
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if (live || config) {
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vshError(ctl, "%s", _("--current must be specified exclusively"));
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return false;
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}
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flags = VIR_DOMAIN_SCHEDPARAM_CURRENT;
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} else {
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if (config)
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flags |= VIR_DOMAIN_SCHEDPARAM_CONFIG;
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if (live)
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flags |= VIR_DOMAIN_SCHEDPARAM_LIVE;
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}
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if (!vshConnectionUsability(ctl, ctl->conn))
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if (!vshConnectionUsability(ctl, ctl->conn))
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return false;
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return false;
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@ -1741,6 +1761,10 @@ cmdSchedinfo(vshControl *ctl, const vshCmd *cmd)
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/* Update parameters & refresh data */
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/* Update parameters & refresh data */
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if (update) {
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if (update) {
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if (flags || current)
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ret = virDomainSetSchedulerParametersFlags(dom, params,
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nparams, flags);
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else
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ret = virDomainSetSchedulerParameters(dom, params, nparams);
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ret = virDomainSetSchedulerParameters(dom, params, nparams);
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if (ret == -1)
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if (ret == -1)
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goto cleanup;
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goto cleanup;
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@ -570,11 +570,14 @@ This is roughly equivalent to doing a hibernate on a running computer,
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with all the same limitations. Open network connections may be
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with all the same limitations. Open network connections may be
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severed upon restore, as TCP timeouts may have expired.
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severed upon restore, as TCP timeouts may have expired.
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=item B<schedinfo> optional I<--set> B<parameter=value> I<domain-id>
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=item B<schedinfo> optional I<--set> B<parameter=value> I<domain-id> I<--config>
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I<--live> I<--current>
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=item B<schedinfo> optional I<--weight> B<number> optional I<--cap> B<number> I<domain-id>
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=item B<schedinfo> optional I<--weight> B<number> optional I<--cap> B<number>
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I<domain-id>
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Allows you to show (and set) the domain scheduler parameters. The parameters available for each hypervisor are:
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Allows you to show (and set) the domain scheduler parameters. The parameters
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available for each hypervisor are:
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LXC, QEMU/KVM (posix scheduler): cpu_shares
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LXC, QEMU/KVM (posix scheduler): cpu_shares
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@ -582,6 +585,10 @@ Xen (credit scheduler): weight, cap
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ESX (allocation scheduler): reservation, limit, shares
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ESX (allocation scheduler): reservation, limit, shares
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If I<--live> is specified, set scheduler information of a running guest.
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If I<--config> is specified, affect the next boot of a persistent guest.
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If I<--current> is specified, affect the current guest state.
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B<Note>: The cpu_shares parameter has a valid value range of 0-262144; Negative
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B<Note>: The cpu_shares parameter has a valid value range of 0-262144; Negative
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values are wrapped to positive, and larger values are capped at the maximum.
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values are wrapped to positive, and larger values are capped at the maximum.
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Therefore, -1 is a useful shorthand for 262144.
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Therefore, -1 is a useful shorthand for 262144.
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