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virsh: Implement command for virDomainSetVcpu called setvcpu

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Add a simple virsh command handler which makes use of the new API.
This commit is contained in:
Peter Krempa 2016-06-21 10:55:30 +02:00
parent 8f657259bb
commit f0326d6dd9
2 changed files with 107 additions and 0 deletions
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88
tools/virsh-domain.c
View File

@ -7014,6 +7014,88 @@ cmdGuestvcpus(vshControl *ctl, const vshCmd *cmd)
}
/*
* "setvcpu" command
*/
static const vshCmdInfo info_setvcpu[] = {
{.name = "help",
.data = N_("attach/detach vcpu or groups of threads")
},
{.name = "desc",
.data = N_("Add or remove vcpus")
},
{.name = NULL}
};
static const vshCmdOptDef opts_setvcpu[] = {
VIRSH_COMMON_OPT_DOMAIN_FULL,
{.name = "vcpulist",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("ids of vcpus to manipulate")
},
{.name = "enable",
.type = VSH_OT_BOOL,
.help = N_("enable cpus specified by cpumap")
},
{.name = "disable",
.type = VSH_OT_BOOL,
.help = N_("disable cpus specified by cpumap")
},
VIRSH_COMMON_OPT_DOMAIN_CONFIG,
VIRSH_COMMON_OPT_DOMAIN_LIVE,
VIRSH_COMMON_OPT_DOMAIN_CURRENT,
{.name = NULL}
};
static bool
cmdSetvcpu(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom;
bool enable = vshCommandOptBool(cmd, "enable");
bool disable = vshCommandOptBool(cmd, "disable");
bool config = vshCommandOptBool(cmd, "config");
bool live = vshCommandOptBool(cmd, "live");
const char *vcpulist = NULL;
int state = 0;
bool ret = false;
unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT;
VSH_EXCLUSIVE_OPTIONS_VAR(enable, disable);
VSH_EXCLUSIVE_OPTIONS("current", "live");
VSH_EXCLUSIVE_OPTIONS("current", "config");
if (config)
flags |= VIR_DOMAIN_AFFECT_CONFIG;
if (live)
flags |= VIR_DOMAIN_AFFECT_LIVE;
if (!(enable || disable)) {
vshError(ctl, "%s", _("one of --enable, --disable is required"));
return false;
}
if (vshCommandOptStringReq(ctl, cmd, "vcpulist", &vcpulist))
return false;
if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
return false;
if (enable)
state = 1;
if (virDomainSetVcpu(dom, vcpulist, state, flags) < 0)
goto cleanup;
ret = true;
cleanup:
virDomainFree(dom);
return ret;
}
/*
* "iothreadinfo" command
*/
@ -13951,5 +14033,11 @@ const vshCmdDef domManagementCmds[] = {
.info = info_guestvcpus,
.flags = 0
},
{.name = "setvcpu",
.handler = cmdSetvcpu,
.opts = opts_setvcpu,
.info = info_setvcpu,
.flags = 0
},
{.name = NULL}
};

19
tools/virsh.pod
View File

@ -2418,6 +2418,25 @@ be hot-plugged the next time the domain is booted. As such, it must only be
used with the I<--config> flag, and not with the I<--live> or the I<--current>
flag.
=item B<setvcpu> I<domain> I<vcpulist> [I<--enable>] | [I<--disable>]
[[I<--live>] [I<--config>] | [I<--current>]]
Change state of individual vCPUs using hot(un)plug mechanism.
See B<vcpupin> for information on format of I<vcpulist>. Hypervisor drivers may
require that I<vcpulist> contains exactly vCPUs belonging to one hotpluggable
entity. This is usually just a single vCPU but certain architectures such as
ppc64 require a full core to be specified at once.
Note that hypervisors may refuse to disable certain vcpus such as vcpu 0 or
others.
If I<--live> is specified, affect a running domain.
If I<--config> is specified, affect the next startup of a persistent domain.
If I<--current> is specified, affect the current domain state. This is the
default. Both I<--live> and I<--config> flags may be given, but I<--current> is
exclusive.
=item B<shutdown> I<domain> [I<--mode MODE-LIST>]
Gracefully shuts down a domain. This coordinates with the domain OS