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Add support for systemd-machined CreateMachineWithNetwork

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systemd-machined introduced a new method CreateMachineWithNetwork
that obsoletes CreateMachine. It expects to be given a list of
VETH/TAP device indexes for the host side device(s) associated
with a container/machine.

This falls back to the old CreateMachine method when the new
one is not supported.
This commit is contained in:
Daniel P. Berrange 2014-11-11 17:38:43 +00:00
parent 5035279198
commit 318df5a05f
8 changed files with 147 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
po/POTFILES.in
View File

@ -216,6 +216,7 @@ src/util/virstorageencryption.c
src/util/virstoragefile.c
src/util/virstring.c
src/util/virsysinfo.c
src/util/virsystemd.c
src/util/virerror.c
src/util/virerror.h
src/util/virtime.c

1
src/lxc/lxc_cgroup.c
View File

@ -486,6 +486,7 @@ virCgroupPtr virLXCCgroupCreate(virDomainDefPtr def)
NULL,
getpid(),
true,
0, NULL,
def->resource->partition,
-1,
&cgroup) < 0)

1
src/qemu/qemu_cgroup.c
View File

@ -769,6 +769,7 @@ qemuInitCgroup(virQEMUDriverPtr driver,
NULL,
vm->pid,
false,
0, NULL,
vm->def->resource->partition,
cfg->cgroupControllers,
&priv->cgroup) < 0) {

8
src/util/vircgroup.c
View File

@ -1584,6 +1584,8 @@ virCgroupNewMachineSystemd(const char *name,
const char *rootdir,
pid_t pidleader,
bool isContainer,
size_t nnicindexes,
int *nicindexes,
const char *partition,
int controllers,
virCgroupPtr *group)
@ -1602,6 +1604,8 @@ virCgroupNewMachineSystemd(const char *name,
rootdir,
pidleader,
isContainer,
nnicindexes,
nicindexes,
partition)) < 0)
return rv;
@ -1747,6 +1751,8 @@ virCgroupNewMachine(const char *name,
const char *rootdir,
pid_t pidleader,
bool isContainer,
size_t nnicindexes,
int *nicindexes,
const char *partition,
int controllers,
virCgroupPtr *group)
@ -1762,6 +1768,8 @@ virCgroupNewMachine(const char *name,
rootdir,
pidleader,
isContainer,
nnicindexes,
nicindexes,
partition,
controllers,
group)) == 0)

2
src/util/vircgroup.h
View File

@ -100,6 +100,8 @@ int virCgroupNewMachine(const char *name,
const char *rootdir,
pid_t pidleader,
bool isContainer,
size_t nnicindexes,
int *nicindexes,
const char *partition,
int controllers,
virCgroupPtr *group)

122
src/util/virsystemd.c
View File

@ -26,6 +26,7 @@
#endif
#include "virsystemd.h"
#include "viratomic.h"
#include "virdbus.h"
#include "virstring.h"
#include "viralloc.h"
@ -147,7 +148,10 @@ char *virSystemdMakeMachineName(const char *name,
* @uuid: globally unique UUID of the machine
* @rootdir: root directory of machine filesystem
* @pidleader: PID of the leader process
* @slice: name of the slice to place the machine in
* @iscontainer: true if a container, false if a VM
* @nnicindexes: number of network interface indexes in list
* @nicindexes: list of network interface indexes
* @partition: name of the slice to place the machine in
*
* Returns 0 on success, -1 on fatal error, or -2 if systemd-machine is not available
*/
@ -158,6 +162,8 @@ int virSystemdCreateMachine(const char *name,
const char *rootdir,
pid_t pidleader,
bool iscontainer,
size_t nnicindexes,
int *nicindexes,
const char *partition)
{
int ret;
@ -165,6 +171,7 @@ int virSystemdCreateMachine(const char *name,
char *machinename = NULL;
char *creatorname = NULL;
char *slicename = NULL;
static int hasCreateWithNetwork = 1;
ret = virDBusIsServiceEnabled("org.freedesktop.machine1");
if (ret < 0)
@ -192,8 +199,18 @@ int virSystemdCreateMachine(const char *name,
}
/*
* The systemd DBus API we're invoking has the
* following signature
* The systemd DBus APIs we're invoking have the
* following signature(s)
*
* CreateMachineWithNetwork(in s name,
* in ay id,
* in s service,
* in s class,
* in u leader,
* in s root_directory,
* in ai nicindexes
* in a(sv) scope_properties,
* out o path);
*
* CreateMachine(in s name,
* in ay id,
@ -221,38 +238,91 @@ int virSystemdCreateMachine(const char *name,
* @root_directory: the root directory of the container, if
* this is known & visible in the host filesystem, or empty string
*
* @nicindexes: list of network interface indexes for the
* host end of the VETH device pairs.
*
* @scope_properties:an array (not a dict!) of properties that are
* passed on to PID 1 when creating a scope unit for your machine.
* Will allow initial settings for the cgroup & similar.
*
* @path: a bus path returned for the machine object created, to
* allow further API calls to be made against the object.
*
*/
VIR_DEBUG("Attempting to create machine via systemd");
if (virDBusCallMethod(conn,
NULL,
NULL,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CreateMachine",
"sayssusa(sv)",
machinename,
16,
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15],
creatorname,
iscontainer ? "container" : "vm",
(unsigned int)pidleader,
rootdir ? rootdir : "",
3,
"Slice", "s", slicename,
"After", "as", 1, "libvirtd.service",
"Before", "as", 1, "libvirt-guests.service") < 0)
goto cleanup;
if (virAtomicIntGet(&hasCreateWithNetwork)) {
DBusError error;
dbus_error_init(&error);
if (virDBusCallMethod(conn,
NULL,
&error,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CreateMachineWithNetwork",
"sayssusa&ia(sv)",
machinename,
16,
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15],
creatorname,
iscontainer ? "container" : "vm",
(unsigned int)pidleader,
rootdir ? rootdir : "",
nnicindexes, nicindexes,
3,
"Slice", "s", slicename,
"After", "as", 1, "libvirtd.service",
"Before", "as", 1, "libvirt-guests.service") < 0)
goto cleanup;
if (dbus_error_is_set(&error)) {
if (STREQ_NULLABLE("org.freedesktop.DBus.Error.UnknownMethod",
error.name)) {
VIR_INFO("CreateMachineWithNetwork isn't supported, switching "
"to legacy CreateMachine method for systemd-machined");
dbus_error_free(&error);
virAtomicIntSet(&hasCreateWithNetwork, 0);
/* Could re-structure without Using goto, but this
* avoids another atomic read which would trigger
* another memory barrier */
goto fallback;
}
virReportError(VIR_ERR_DBUS_SERVICE,
_("CreateMachineWithNetwork: %s"),
error.message ? error.message : _("unknown error"));
goto cleanup;
}
} else {
fallback:
if (virDBusCallMethod(conn,
NULL,
NULL,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CreateMachine",
"sayssusa(sv)",
machinename,
16,
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15],
creatorname,
iscontainer ? "container" : "vm",
(unsigned int)pidleader,
rootdir ? rootdir : "",
3,
"Slice", "s", slicename,
"After", "as", 1, "libvirtd.service",
"Before", "as", 1, "libvirt-guests.service") < 0)
goto cleanup;
}
ret = 0;

2
src/util/virsystemd.h
View File

@ -40,6 +40,8 @@ int virSystemdCreateMachine(const char *name,
const char *rootdir,
pid_t pidleader,
bool iscontainer,
size_t nnicindexes,
int *nicindexes,
const char *partition);
int virSystemdTerminateMachine(const char *name,

36
tests/virsystemdtest.c
View File

@ -146,6 +146,7 @@ static int testCreateContainer(const void *opaque ATTRIBUTE_UNUSED)
"/proc/123/root",
123,
true,
0, NULL,
"highpriority.slice") < 0) {
fprintf(stderr, "%s", "Failed to create LXC machine\n");
return -1;
@ -181,6 +182,7 @@ static int testCreateMachine(const void *opaque ATTRIBUTE_UNUSED)
NULL,
123,
false,
0, NULL,
NULL) < 0) {
fprintf(stderr, "%s", "Failed to create KVM machine\n");
return -1;
@ -220,6 +222,7 @@ static int testCreateNoSystemd(const void *opaque ATTRIBUTE_UNUSED)
NULL,
123,
false,
0, NULL,
NULL)) == 0) {
unsetenv("FAIL_NO_SERVICE");
fprintf(stderr, "%s", "Unexpected create machine success\n");
@ -254,6 +257,7 @@ static int testCreateSystemdNotRunning(const void *opaque ATTRIBUTE_UNUSED)
NULL,
123,
false,
0, NULL,
NULL)) == 0) {
unsetenv("FAIL_NOT_REGISTERED");
fprintf(stderr, "%s", "Unexpected create machine success\n");
@ -288,6 +292,7 @@ static int testCreateBadSystemd(const void *opaque ATTRIBUTE_UNUSED)
NULL,
123,
false,
0, NULL,
NULL)) == 0) {
unsetenv("FAIL_BAD_SERVICE");
fprintf(stderr, "%s", "Unexpected create machine success\n");
@ -304,6 +309,35 @@ static int testCreateBadSystemd(const void *opaque ATTRIBUTE_UNUSED)
}
static int testCreateNetwork(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
int nicindexes[] = {
2, 1729, 87539319,
};
size_t nnicindexes = ARRAY_CARDINALITY(nicindexes);
if (virSystemdCreateMachine("demo",
"lxc",
true,
uuid,
"/proc/123/root",
123,
true,
nnicindexes, nicindexes,
"highpriority.slice") < 0) {
fprintf(stderr, "%s", "Failed to create LXC machine\n");
return -1;
}
return 0;
}
struct testScopeData {
const char *name;
const char *partition;
@ -435,6 +469,8 @@ mymain(void)
ret = -1;
if (virtTestRun("Test create bad systemd ", testCreateBadSystemd, NULL) < 0)
ret = -1;
if (virtTestRun("Test create with network ", testCreateNetwork, NULL) < 0)
ret = -1;
# define TEST_SCOPE(name, partition, unitname) \
do { \