[libvirt] [PATCHv3 4/5] domifaddr: Add virsh support
Nehal J Wani
nehaljw.kkd1 at gmail.com
Fri Aug 23 15:45:09 UTC 2013
On Fri, Aug 23, 2013 at 8:16 PM, Doug Goldstein <cardoe at gentoo.org> wrote:
>
> On Thu, Aug 22, 2013 at 5:18 PM, nehaljwani <nehaljw.kkd1 at gmail.com>
wrote:
>>
>> Use virDomainInterfacesAddresses in virsh
>>
>> tools/virsh-domain-monitor.c
>> * Introduce new command : domifaddr
>>
>> virsh # domifaddr f18
>> Name MAC address IP address
>> ---------------------------------------------------
>> lo 00:00:00:00:00:00 127.0.0.1/8 ::1/128
>> eth0 52:54:00:89:ad:35 192.168.102.142/24fe80::5054:ff:fe89:ad35/64
>> eth1 52:54:00:d3:39:ee 192.168.103.183/24fe80::5054:ff:fed3:39ee/64
>> eth2 52:54:00:fe:4c:4f 192.168.101.197/24fe80::5054:ff:fefe:4c4f/64
>> eth3 52:54:00:89:4e:97 192.168.101.130/24fe80::5054:ff:fe89:4e97/64
>>
>
> Not a review, but a question. How does this work with IP aliases? Will it
show all the aliases 1 per line or just show the primary address?
>
>>
>> tools/virsh.pod
>> * Document new command
>>
>> ---
>> tools/virsh-domain-monitor.c | 99
++++++++++++++++++++++++++++++++++++++++++++
>> tools/virsh.pod | 10 +++++
>> 2 files changed, 109 insertions(+)
>>
>> diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c
>> index b29b82a..91efa71 100644
>> --- a/tools/virsh-domain-monitor.c
>> +++ b/tools/virsh-domain-monitor.c
>> @@ -1871,6 +1871,99 @@ cleanup:
>> }
>> #undef FILTER
>>
>> +/* "domifaddr" command
>> + */
>> +static const vshCmdInfo info_domifaddr[] = {
>> + {"help", N_("Get network interfaces' addresses for a running
domain")},
>> + {"desc", N_("Get network interfaces' addresses for a running
domain")},
>> + {NULL, NULL}
>> +};
>> +
>> +static const vshCmdOptDef opts_domifaddr[] = {
>> + {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or
uuid")},
>> + {"interface", VSH_OT_DATA, VSH_OFLAG_NONE, N_("network interface
name")},
>> + {NULL, 0, 0, NULL}
>> +};
>> +
>> +static bool
>> +cmdDomIfAddr(vshControl *ctl, const vshCmd *cmd)
>> +{
>> + virDomainPtr dom = NULL;
>> + const char *interface = NULL;
>> + virDomainInterfacePtr *ifaces = NULL;
>> + size_t i, j;
>> + int ifaces_count = 0;
>> + unsigned int flags = 0;
>> + bool ret = false;
>> +
>> + if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
>> + return false;
>> +
>> + if (vshCommandOptString(cmd, "interface", &interface) < 0) {
>> + goto cleanup;
>> + }
>> +
>> + if ((ifaces_count = virDomainInterfacesAddresses(dom, &ifaces,
flags)) < 0) {
>> + vshError(ctl, _("Failed to query for interfaces addresses"));
>> + goto cleanup;
>> + }
>> +
>> + vshPrintExtra(ctl, " %-10s %-17s %s\n%s\n",
>> + _("Name"), _("MAC address"), _("IP address"),
>> +
"---------------------------------------------------");
>> +
>> + for (i = 0; i < ifaces_count; i++) {
>> + virDomainInterfacePtr iface = ifaces[i];
>> + virBuffer buf = VIR_BUFFER_INITIALIZER;
>> + const char *hwaddr = "";
>> + const char *ip_addr_str = NULL;
>> +
>> + if (interface && STRNEQ(interface, iface->name)) {
>> + virBufferFreeAndReset(&buf);
>> + continue;
>> + }
>> +
>> + if (iface->hwaddr)
>> + hwaddr = iface->hwaddr;
>> +
>> + for (j = 0; j < iface->naddrs; j++) {
>> + if (j)
>> + virBufferAddChar(&buf, ' ');
>> + virBufferAsprintf(&buf, "%s/%d",
>> + iface->addrs[j].addr,
>> + iface->addrs[j].prefix);
>> + }
>> +
>> + if (virBufferError(&buf)) {
>> + virBufferFreeAndReset(&buf);
>> + virReportOOMError();
>> + return ret;
>> + }
>> +
>> + ip_addr_str = virBufferContentAndReset(&buf);
>> +
>> + if (!ip_addr_str)
>> + ip_addr_str = "";
>> +
>> + vshPrintExtra(ctl, " %-10s %-17s %s\n",
>> + iface->name, hwaddr, ip_addr_str);
>> +
>> + virBufferFreeAndReset(&buf);
>> + }
>> +
>> + ret = true;
>> +
>> +cleanup:
>> + for (i = 0; i < ifaces_count; i++) {
>> + if (ifaces[i])
>> + virDomainInterfaceFree(ifaces[i]);
>> + }
>> + VIR_FREE(ifaces);
>> +
>> + virDomainFree(dom);
>> + return ret;
>> +}
>> +
>> const vshCmdDef domMonitoringCmds[] = {
>> {.name = "domblkerror",
>> .handler = cmdDomBlkError,
>> @@ -1944,5 +2037,11 @@ const vshCmdDef domMonitoringCmds[] = {
>> .info = info_list,
>> .flags = 0
>> },
>> + {.name = "domifaddr",
>> + .handler = cmdDomIfAddr,
>> + .opts = opts_domifaddr,
>> + .info = info_domifaddr,
>> + .flags = 0
>> + },
>> {.name = NULL}
>> };
>> diff --git a/tools/virsh.pod b/tools/virsh.pod
>> index 0ae5178..008ffea 100644
>> --- a/tools/virsh.pod
>> +++ b/tools/virsh.pod
>> @@ -636,6 +636,16 @@ B<Explanation of fields> (fields appear in the
following order):
>> flush_total_times - total time flush operations took (ns)
>> <-- other fields provided by hypervisor -->
>>
>> +
>> +=item B<domifaddr> I<domain> [I<interface>]
>> +
>> +Get a list of interfaces of a running domain along with their IP and MAC
>> +addresses, or limited output just for one interface if I<interface> is
>> +specified. Note, that I<interface> can be driver dependent, it can be
>> +the name within guest OS or the name you would see in domain XML.
>> +Moreover, the whole command may require a guest agent to be configured
>> +for the queried domain under some drivers, notably qemu.
>> +
>> =item B<domifstat> I<domain> I<interface-device>
>>
>> Get network interface stats for a running domain.
>> --
>> 1.7.11.7
>>
>> --
>> libvir-list mailing list
>> libvir-list at redhat.com
>> https://www.redhat.com/mailman/listinfo/libvir-list
>
>
>
>
> --
> Doug Goldstein
The leases method will be applied to this API when
virNetworkGetDHCPLeases() API is accepted, which is the next step after
this.
Refer: http://www.redhat.com/archives/libvir-list/2013-July/msg01603.html and
its followups.
The output from the virNetworkGetDHCPLeases will be something of this kind:
virsh # net-dhcp-leases default
Virtual Network Expiry Time MAC address IP address
Hostname ClientId
------------------------------------------------------------
----------------------------------------
default 16-08-2013 03:53:11 52:54:00:89:4e:97
192.168.101.130 f18 *
default 16-08-2013 03:45:20 52:54:00:fe:4c:4f
192.168.101.197 * *
--
Nehal J Wani
UG3, BTech CS+MS(CL)
IIIT-Hyderabad
http://commandlinewani.blogspot.com
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