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vcpu: improve vcpu support in xen command line

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This patch series focuses on xendConfigVersion 2 (xm_internal) and 3
(xend_internal), but leaves out changes for xenapi drivers.

See this link for more details about vcpu_avail for xm usage.
http://lists.xensource.com/archives/html/xen-devel/2009-11/msg01061.html

This relies on the fact that def->maxvcpus can be at most 32 with xen.

* src/xen/xend_internal.c (xenDaemonParseSxpr)
(sexpr_to_xend_domain_info, xenDaemonFormatSxpr): Use vcpu_avail
when current vcpus is less than maximum.
* src/xen/xm_internal.c (xenXMDomainConfigParse)
(xenXMDomainConfigFormat): Likewise.
* tests/xml2sexprdata/xml2sexpr-pv-vcpus.sexpr: New file.
* tests/sexpr2xmldata/sexpr2xml-pv-vcpus.sexpr: Likewise.
* tests/sexpr2xmldata/sexpr2xml-pv-vcpus.xml: Likewise.
* tests/xmconfigdata/test-paravirt-vcpu.cfg: Likewise.
* tests/xmconfigdata/test-paravirt-vcpu.xml: Likewise.
* tests/xml2sexprtest.c (mymain): New test.
* tests/sexpr2xmltest.c (mymain): Likewise.
* tests/xmconfigtest.c (mymain): Likewise.
This commit is contained in:
Eric Blake 2010-10-05 08:18:52 -06:00
parent 28a3605906
commit 0fab10e5ed
10 changed files with 105 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/xen/xend_internal.c
View File

@ -44,6 +44,7 @@
#include "xen_hypervisor.h"
#include "xs_internal.h" /* To extract VNC port & Serial console TTY */
#include "memory.h"
#include "count-one-bits.h"
/* required for cpumap_t */
#include <xen/dom0_ops.h>
@ -2191,7 +2192,9 @@ xenDaemonParseSxpr(virConnectPtr conn,
}
def->maxvcpus = sexpr_int(root, "domain/vcpus");
def->vcpus = def->maxvcpus;
def->vcpus = count_one_bits(sexpr_int(root, "domain/vcpu_avail"));
if (!def->vcpus || def->maxvcpus < def->vcpus)
def->vcpus = def->maxvcpus;
tmp = sexpr_node(root, "domain/on_poweroff");
if (tmp != NULL) {
@ -2433,7 +2436,7 @@ sexpr_to_xend_domain_info(virDomainPtr domain, const struct sexpr *root,
virDomainInfoPtr info)
{
const char *flags;
int vcpus;
if ((root == NULL) || (info == NULL))
return (-1);
@ -2464,7 +2467,11 @@ sexpr_to_xend_domain_info(virDomainPtr domain, const struct sexpr *root,
info->state = VIR_DOMAIN_NOSTATE;
}
info->cpuTime = sexpr_float(root, "domain/cpu_time") * 1000000000;
info->nrVirtCpu = sexpr_int(root, "domain/vcpus");
vcpus = sexpr_int(root, "domain/vcpus");
info->nrVirtCpu = count_one_bits(sexpr_int(root, "domain/vcpu_avail"));
if (!info->nrVirtCpu || vcpus < info->nrVirtCpu)
info->nrVirtCpu = vcpus;
return (0);
}
@ -5668,6 +5675,9 @@ xenDaemonFormatSxpr(virConnectPtr conn,
virBufferVSprintf(&buf, "(memory %lu)(maxmem %lu)",
def->mem.cur_balloon/1024, def->mem.max_balloon/1024);
virBufferVSprintf(&buf, "(vcpus %u)", def->maxvcpus);
/* Computing the vcpu_avail bitmask works because MAX_VIRT_CPUS is 32. */
if (def->vcpus < def->maxvcpus)
virBufferVSprintf(&buf, "(vcpu_avail %u)", (1U << def->vcpus) - 1);
if (def->cpumask) {
char *ranges = virDomainCpuSetFormat(def->cpumask, def->cpumasklen);
@ -5763,6 +5773,9 @@ xenDaemonFormatSxpr(virConnectPtr conn,
virBufferVSprintf(&buf, "(kernel '%s')", def->os.loader);
virBufferVSprintf(&buf, "(vcpus %u)", def->maxvcpus);
if (def->vcpus < def->maxvcpus)
virBufferVSprintf(&buf, "(vcpu_avail %u)",
(1U << def->vcpus) - 1);
for (i = 0 ; i < def->os.nBootDevs ; i++) {
switch (def->os.bootDevs[i]) {

10
src/xen/xm_internal.c
View File

@ -46,6 +46,7 @@
#include "util.h"
#include "memory.h"
#include "logging.h"
#include "count-one-bits.h"
#define VIR_FROM_THIS VIR_FROM_XENXM
@ -772,10 +773,12 @@ xenXMDomainConfigParse(virConnectPtr conn, virConfPtr conf) {
def->mem.max_balloon *= 1024;
if (xenXMConfigGetULong(conf, "vcpus", &count, 1) < 0 ||
(unsigned short) count != count)
MAX_VIRT_CPUS < count)
goto cleanup;
def->maxvcpus = count;
def->vcpus = def->maxvcpus;
if (xenXMConfigGetULong(conf, "vcpu_avail", &count, -1) < 0)
goto cleanup;
def->vcpus = MIN(count_one_bits(count), def->maxvcpus);
if (xenXMConfigGetString(conf, "cpus", &str, NULL) < 0)
goto cleanup;
@ -2246,6 +2249,9 @@ virConfPtr xenXMDomainConfigFormat(virConnectPtr conn,
if (xenXMConfigSetInt(conf, "vcpus", def->maxvcpus) < 0)
goto no_memory;
if (def->vcpus < def->maxvcpus &&
xenXMConfigSetInt(conf, "vcpu_avail", (1U << def->vcpus) - 1) < 0)
goto no_memory;
if ((def->cpumask != NULL) &&
((cpus = virDomainCpuSetFormat(def->cpumask,

1
tests/sexpr2xmldata/sexpr2xml-pv-vcpus.sexpr Normal file
View File

@ -0,0 +1 @@
(domain (domid 6)(name 'pvtest')(memory 420)(maxmem 420)(vcpus 4)(vcpu_avail 3)(uuid '596a5d2171f48fb2e068e2386a5c413e')(on_poweroff 'destroy')(on_reboot 'destroy')(on_crash 'destroy')(image (linux (kernel '/var/lib/xen/vmlinuz.2Dn2YT')(ramdisk '/var/lib/xen/initrd.img.0u-Vhq')(args ' method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5.91/x86_64/os ')))(device (vbd (dev 'xvda')(uname 'file:/root/some.img')(mode 'w'))))

27
tests/sexpr2xmldata/sexpr2xml-pv-vcpus.xml Normal file
View File

@ -0,0 +1,27 @@
<domain type='xen' id='6'>
<name>pvtest</name>
<uuid>596a5d21-71f4-8fb2-e068-e2386a5c413e</uuid>
<memory>430080</memory>
<currentMemory>430080</currentMemory>
<vcpu current='2'>4</vcpu>
<os>
<type>linux</type>
<kernel>/var/lib/xen/vmlinuz.2Dn2YT</kernel>
<initrd>/var/lib/xen/initrd.img.0u-Vhq</initrd>
<cmdline> method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5.91/x86_64/os </cmdline>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>destroy</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<disk type='file' device='disk'>
<driver name='file'/>
<source file='/root/some.img'/>
<target dev='xvda' bus='xen'/>
</disk>
<console type='pty'>
<target type='xen' port='0'/>
</console>
</devices>
</domain>

1
tests/sexpr2xmltest.c
View File

@ -132,6 +132,7 @@ mymain(int argc, char **argv)
DO_TEST("pv-vfb-type-crash", "pv-vfb-type-crash", 3);
DO_TEST("fv-autoport", "fv-autoport", 3);
DO_TEST("pv-bootloader", "pv-bootloader", 1);
DO_TEST("pv-vcpus", "pv-vcpus", 1);
DO_TEST("disk-file", "disk-file", 2);
DO_TEST("disk-block", "disk-block", 2);

17
tests/xmconfigdata/test-paravirt-vcpu.cfg Normal file
View File

@ -0,0 +1,17 @@
name = "XenGuest1"
uuid = "c7a5fdb0-cdaf-9455-926a-d65c16db1809"
maxmem = 579
memory = 394
vcpus = 4
vcpu_avail = 3
bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
sdl = 0
vnc = 1
vncunused = 1
vnclisten = "127.0.0.1"
vncpasswd = "123poi"
disk = [ "phy:/dev/HostVG/XenGuest1,xvda,w" ]
vif = [ "mac=00:16:3e:66:94:9c,bridge=br0,script=vif-bridge" ]

32
tests/xmconfigdata/test-paravirt-vcpu.xml Normal file
View File

@ -0,0 +1,32 @@
<domain type='xen'>
<name>XenGuest1</name>
<uuid>c7a5fdb0-cdaf-9455-926a-d65c16db1809</uuid>
<memory>592896</memory>
<currentMemory>403456</currentMemory>
<vcpu current='2'>4</vcpu>
<bootloader>/usr/bin/pygrub</bootloader>
<os>
<type arch='i686' machine='xenpv'>linux</type>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<disk type='block' device='disk'>
<driver name='phy'/>
<source dev='/dev/HostVG/XenGuest1'/>
<target dev='xvda' bus='xen'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:66:94:9c'/>
<source bridge='br0'/>
<script path='vif-bridge'/>
</interface>
<console type='pty'>
<target type='xen' port='0'/>
</console>
<input type='mouse' bus='xen'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' passwd='123poi'/>
</devices>
</domain>

1
tests/xmconfigtest.c
View File

@ -210,6 +210,7 @@ mymain(int argc, char **argv)
DO_TEST("paravirt-new-pvfb-vncdisplay", 3);
DO_TEST("paravirt-net-e1000", 3);
DO_TEST("paravirt-net-vifname", 3);
DO_TEST("paravirt-vcpu", 2);
DO_TEST("fullvirt-old-cdrom", 1);
DO_TEST("fullvirt-new-cdrom", 2);
DO_TEST("fullvirt-utc", 2);

1
tests/xml2sexprdata/xml2sexpr-pv-vcpus.sexpr Normal file
View File

@ -0,0 +1 @@
(vm (name 'pvtest')(memory 420)(maxmem 420)(vcpus 4)(vcpu_avail 3)(uuid '596a5d21-71f4-8fb2-e068-e2386a5c413e')(on_poweroff 'destroy')(on_reboot 'destroy')(on_crash 'destroy')(image (linux (kernel '/var/lib/xen/vmlinuz.2Dn2YT')(ramdisk '/var/lib/xen/initrd.img.0u-Vhq')(args ' method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5.91/x86_64/os ')))(device (vbd (dev 'xvda')(uname 'file:/root/some.img')(mode 'w'))))

1
tests/xml2sexprtest.c
View File

@ -118,6 +118,7 @@ mymain(int argc, char **argv)
DO_TEST("pv-vfb-new", "pv-vfb-new", "pvtest", 3);
DO_TEST("pv-vfb-new-auto", "pv-vfb-new-auto", "pvtest", 3);
DO_TEST("pv-bootloader", "pv-bootloader", "pvtest", 1);
DO_TEST("pv-vcpus", "pv-vcpus", "pvtest", 1);
DO_TEST("disk-file", "disk-file", "pvtest", 2);
DO_TEST("disk-block", "disk-block", "pvtest", 2);