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Accepting request 786023 from home:jfehlig:branches:Virtualization

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- qemu: Create multipath targets for PRs
  a30078cb-qemu-create-mp-target.patch
  bsc#1161883

OBS-URL: https://build.opensuse.org/request/show/786023
OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=813
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James Fehlig 2020-03-17 20:42:34 +00:00 committed by Git OBS Bridge
parent fb13d95c01
commit 770cfbf6c2
3 changed files with 376 additions and 0 deletions
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a30078cb-qemu-create-mp-target.patch Normal file
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@ -0,0 +1,367 @@
commit a30078cb832646177defd256e77c632905f1e6d0
Author: Michal Prívozník <mprivozn@redhat.com>
Date: Wed Nov 13 15:34:50 2019 +0100
qemu: Create multipath targets for PRs
If a disk has persistent reservations enabled, qemu-pr-helper
might open not only /dev/mapper/control but also individual
targets of the multipath device. We are already querying for them
in CGroups, but now we have to create them in the namespace too.
This was brought up in [1].
1: https://bugzilla.redhat.com/show_bug.cgi?id=1711045#c61
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Lin Ma <LMa@suse.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Index: libvirt-6.1.0/src/qemu/qemu_domain.c
===================================================================
--- libvirt-6.1.0.orig/src/qemu/qemu_domain.c
+++ libvirt-6.1.0/src/qemu/qemu_domain.c
@@ -62,6 +62,7 @@
#include "virdomaincheckpointobjlist.h"
#include "backup_conf.h"
#include "virutil.h"
+#include "virdevmapper.h"
#ifdef __linux__
# include <sys/sysmacros.h>
@@ -14495,6 +14496,9 @@ qemuDomainSetupDisk(virQEMUDriverConfigP
bool hasNVMe = false;
for (next = disk->src; virStorageSourceIsBacking(next); next = next->backingStore) {
+ VIR_AUTOSTRINGLIST targetPaths = NULL;
+ size_t i;
+
if (next->type == VIR_STORAGE_TYPE_NVME) {
g_autofree char *nvmePath = NULL;
@@ -14513,6 +14517,19 @@ qemuDomainSetupDisk(virQEMUDriverConfigP
if (qemuDomainCreateDevice(next->path, data, false) < 0)
return -1;
+
+ if (virDevMapperGetTargets(next->path, &targetPaths) < 0 &&
+ errno != ENOSYS && errno != EBADF) {
+ virReportSystemError(errno,
+ _("Unable to get devmapper targets for %s"),
+ next->path);
+ return -1;
+ }
+
+ for (i = 0; targetPaths && targetPaths[i]; i++) {
+ if (qemuDomainCreateDevice(targetPaths[i], data, false) < 0)
+ return -1;
+ }
}
}
@@ -15528,21 +15545,19 @@ qemuDomainNamespaceSetupDisk(virDomainOb
virStorageSourcePtr src)
{
virStorageSourcePtr next;
- char **paths = NULL;
+ VIR_AUTOSTRINGLIST paths = NULL;
size_t npaths = 0;
bool hasNVMe = false;
- g_autofree char *dmPath = NULL;
- g_autofree char *vfioPath = NULL;
- int ret = -1;
for (next = src; virStorageSourceIsBacking(next); next = next->backingStore) {
+ VIR_AUTOSTRINGLIST targetPaths = NULL;
g_autofree char *tmpPath = NULL;
if (next->type == VIR_STORAGE_TYPE_NVME) {
hasNVMe = true;
if (!(tmpPath = virPCIDeviceAddressGetIOMMUGroupDev(&next->nvme->pciAddr)))
- goto cleanup;
+ return -1;
} else {
if (virStorageSourceIsEmpty(next) ||
!virStorageSourceIsLocalStorage(next)) {
@@ -15553,30 +15568,35 @@ qemuDomainNamespaceSetupDisk(virDomainOb
tmpPath = g_strdup(next->path);
}
- if (VIR_APPEND_ELEMENT(paths, npaths, tmpPath) < 0)
- goto cleanup;
+ if (virStringListAdd(&paths, tmpPath) < 0)
+ return -1;
+
+ if (virDevMapperGetTargets(next->path, &targetPaths) < 0 &&
+ errno != ENOSYS && errno != EBADF) {
+ virReportSystemError(errno,
+ _("Unable to get devmapper targets for %s"),
+ next->path);
+ return -1;
+ }
+
+ if (virStringListMerge(&paths, &targetPaths) < 0)
+ return -1;
}
/* qemu-pr-helper might require access to /dev/mapper/control. */
- if (src->pr) {
- dmPath = g_strdup(QEMU_DEVICE_MAPPER_CONTROL_PATH);
- if (VIR_APPEND_ELEMENT_COPY(paths, npaths, dmPath) < 0)
- goto cleanup;
- }
+ if (src->pr &&
+ virStringListAdd(&paths, QEMU_DEVICE_MAPPER_CONTROL_PATH) < 0)
+ return -1;
- if (hasNVMe) {
- vfioPath = g_strdup(QEMU_DEV_VFIO);
- if (VIR_APPEND_ELEMENT(paths, npaths, vfioPath) < 0)
- goto cleanup;
- }
+ if (hasNVMe &&
+ virStringListAdd(&paths, QEMU_DEV_VFIO) < 0)
+ return -1;
+ npaths = virStringListLength((const char **) paths);
if (qemuDomainNamespaceMknodPaths(vm, (const char **) paths, npaths) < 0)
- goto cleanup;
+ return -1;
- ret = 0;
- cleanup:
- virStringListFreeCount(paths, npaths);
- return ret;
+ return 0;
}
Index: libvirt-6.1.0/src/util/virdevmapper.h
===================================================================
--- libvirt-6.1.0.orig/src/util/virdevmapper.h
+++ libvirt-6.1.0/src/util/virdevmapper.h
@@ -20,6 +20,8 @@
#pragma once
+#include "internal.h"
+
int
virDevMapperGetTargets(const char *path,
- char ***devPaths);
+ char ***devPaths) G_GNUC_NO_INLINE;
Index: libvirt-6.1.0/src/util/virutil.h
===================================================================
--- libvirt-6.1.0.orig/src/util/virutil.h
+++ libvirt-6.1.0/src/util/virutil.h
@@ -120,7 +120,7 @@ bool virValidateWWN(const char *wwn);
int virGetDeviceID(const char *path,
int *maj,
- int *min);
+ int *min) G_GNUC_NO_INLINE;
int virSetDeviceUnprivSGIO(const char *path,
const char *sysfs_dir,
int unpriv_sgio);
Index: libvirt-6.1.0/tests/qemuhotplugmock.c
===================================================================
--- libvirt-6.1.0.orig/tests/qemuhotplugmock.c
+++ libvirt-6.1.0/tests/qemuhotplugmock.c
@@ -19,7 +19,24 @@
#include <config.h>
#include "qemu/qemu_hotplug.h"
+#include "qemu/qemu_process.h"
#include "conf/domain_conf.h"
+#include "virdevmapper.h"
+#include "virutil.h"
+#include "virmock.h"
+
+static int (*real_virGetDeviceID)(const char *path, int *maj, int *min);
+static bool (*real_virFileExists)(const char *path);
+
+static void
+init_syms(void)
+{
+ if (real_virFileExists)
+ return;
+
+ VIR_MOCK_REAL_INIT(virGetDeviceID);
+ VIR_MOCK_REAL_INIT(virFileExists);
+}
unsigned long long
qemuDomainGetUnplugTimeout(virDomainObjPtr vm G_GNUC_UNUSED)
@@ -31,3 +48,61 @@ qemuDomainGetUnplugTimeout(virDomainObjP
return 200;
return 100;
}
+
+
+int
+virDevMapperGetTargets(const char *path,
+ char ***devPaths)
+{
+ *devPaths = NULL;
+
+ if (STREQ(path, "/dev/mapper/virt")) {
+ *devPaths = g_new(char *, 4);
+ (*devPaths)[0] = g_strdup("/dev/block/8:0"); /* /dev/sda */
+ (*devPaths)[1] = g_strdup("/dev/block/8:16"); /* /dev/sdb */
+ (*devPaths)[2] = g_strdup("/dev/block/8:32"); /* /dev/sdc */
+ (*devPaths)[3] = NULL;
+ }
+
+ return 0;
+}
+
+
+int
+virGetDeviceID(const char *path, int *maj, int *min)
+{
+ init_syms();
+
+ if (STREQ(path, "/dev/mapper/virt")) {
+ *maj = 254;
+ *min = 0;
+ return 0;
+ }
+
+ return real_virGetDeviceID(path, maj, min);
+}
+
+
+bool
+virFileExists(const char *path)
+{
+ init_syms();
+
+ if (STREQ(path, "/dev/mapper/virt"))
+ return true;
+
+ return real_virFileExists(path);
+}
+
+
+int
+qemuProcessStartManagedPRDaemon(virDomainObjPtr vm G_GNUC_UNUSED)
+{
+ return 0;
+}
+
+
+void
+qemuProcessKillManagedPRDaemon(virDomainObjPtr vm G_GNUC_UNUSED)
+{
+}
Index: libvirt-6.1.0/tests/qemuhotplugtest.c
===================================================================
--- libvirt-6.1.0.orig/tests/qemuhotplugtest.c
+++ libvirt-6.1.0/tests/qemuhotplugtest.c
@@ -87,6 +87,8 @@ qemuHotplugCreateObjects(virDomainXMLOpt
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_VNC);
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_SPICE);
virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_SPICE_FILE_XFER_DISABLE);
+ virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_PR_MANAGER_HELPER);
+ virQEMUCapsSet(priv->qemuCaps, QEMU_CAPS_SCSI_BLOCK);
if (qemuTestCapsCacheInsert(driver.qemuCapsCache, priv->qemuCaps) < 0)
return -1;
@@ -748,6 +750,17 @@ mymain(void)
"device_del", QMP_DEVICE_DELETED("scsi3-0-5-6") QMP_OK,
"human-monitor-command", HMP(""));
+ DO_TEST_ATTACH("base-live", "disk-scsi-multipath", false, true,
+ "object-add", QMP_OK,
+ "human-monitor-command", HMP("OK\\r\\n"),
+ "device_add", QMP_OK);
+ DO_TEST_DETACH("base-live", "disk-scsi-multipath", true, true,
+ "device_del", QMP_OK,
+ "human-monitor-command", HMP(""));
+ DO_TEST_DETACH("base-live", "disk-scsi-multipath", false, false,
+ "device_del", QMP_DEVICE_DELETED("scsi0-0-0-0") QMP_OK,
+ "human-monitor-command", HMP(""));
+
DO_TEST_ATTACH("base-live", "qemu-agent", false, true,
"chardev-add", QMP_OK,
"device_add", QMP_OK);
Index: libvirt-6.1.0/tests/qemuhotplugtestdevices/qemuhotplug-disk-scsi-multipath.xml
===================================================================
--- /dev/null
+++ libvirt-6.1.0/tests/qemuhotplugtestdevices/qemuhotplug-disk-scsi-multipath.xml
@@ -0,0 +1,8 @@
+<disk type='block' device='lun'>
+ <driver name='qemu' type='raw'/>
+ <source dev='/dev/mapper/virt'>
+ <reservations managed='yes'/>
+ </source>
+ <target dev='sda' bus='scsi'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+</disk>
Index: libvirt-6.1.0/tests/qemuhotplugtestdomains/qemuhotplug-base-live+disk-scsi-multipath.xml
===================================================================
--- /dev/null
+++ libvirt-6.1.0/tests/qemuhotplugtestdomains/qemuhotplug-base-live+disk-scsi-multipath.xml
@@ -0,0 +1,62 @@
+<domain type='kvm' id='7'>
+ <name>hotplug</name>
+ <uuid>d091ea82-29e6-2e34-3005-f02617b36e87</uuid>
+ <memory unit='KiB'>4194304</memory>
+ <currentMemory unit='KiB'>4194304</currentMemory>
+ <vcpu placement='static'>4</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <acpi/>
+ <apic/>
+ <pae/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>restart</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-x86_64</emulator>
+ <disk type='block' device='lun'>
+ <driver name='qemu' type='raw'/>
+ <source dev='/dev/mapper/virt'>
+ <reservations managed='yes'>
+ <source type='unix' path='/tmp/lib/domain-7-hotplug/pr-helper0.sock' mode='client'/>
+ </reservations>
+ </source>
+ <backingStore/>
+ <target dev='sda' bus='scsi'/>
+ <alias name='scsi0-0-0-0'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <alias name='usb'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <alias name='ide'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='scsi' index='0' model='virtio-scsi'>
+ <alias name='scsi0'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'>
+ <alias name='pci'/>
+ </controller>
+ <controller type='virtio-serial' index='0'>
+ <alias name='virtio-serial0'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+ </controller>
+ <input type='mouse' bus='ps2'>
+ <alias name='input0'/>
+ </input>
+ <input type='keyboard' bus='ps2'>
+ <alias name='input1'/>
+ </input>
+ <memballoon model='none'/>
+ </devices>
+ <seclabel type='none' model='none'/>
+</domain>

7
libvirt.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Tue Mar 17 19:50:01 UTC 2020 - James Fehlig <jfehlig@suse.com>
- qemu: Create multipath targets for PRs
a30078cb-qemu-create-mp-target.patch
bsc#1161883
-------------------------------------------------------------------
Mon Mar 16 08:42:10 UTC 2020 - Guillaume GARDET <guillaume.gardet@opensuse.org>

2
libvirt.spec
View File

@ -338,6 +338,7 @@ Source6: libvirtd-relocation-server.xml
Source99: baselibs.conf
Source100: %{name}-rpmlintrc
# Upstream patches
Patch0: a30078cb-qemu-create-mp-target.patch
# Patches pending upstream review
Patch100: libxl-dom-reset.patch
Patch101: network-don-t-use-dhcp-authoritative-on-static-netwo.patch
@ -871,6 +872,7 @@ libvirt plugin for NSS for translating domain names into IP addresses.
%prep
%setup -q
%patch0 -p1
%patch100 -p1
%patch101 -p1
%patch150 -p1