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[libvirt] Compiler warnings
by Alex Jia 18 Oct '11

18 Oct '11

Hi all, I meet the following compiler warnings today: ...... CC libvirt_util_la-buf.lo util/buf.c: In function 'virBufferEscape': util/buf.c:430: warning: logical '&&' with non-zero constant will always evaluate as true [-Wlogical-op] CC libvirt_util_la-command.lo ...... CC libvirt_lxc-buf.o util/buf.c: In function 'virBufferEscape': util/buf.c:430: warning: logical '&&' with non-zero constant will always evaluate as true [-Wlogical-op] CC libvirt_lxc-command.o ...... Has anybody the same experience? Thanks, Alex

4 13

[libvirt] [PATCH] compile: Add a missing function 'pciDeviceListFind' to libvirt_private.syms
by Xu He Jie 18 Oct '11

18 Oct '11

compile error: ../src/.libs/libvirt_driver_qemu.a(libvirt_driver_qemu_la-qemu_hostdev.o): In function `qemuPrepareHostdevPCIDevices': /home/soulxu/data/work-code/libvirt/src/qemu/qemu_hostdev.c:183: undefined reference to `pciDeviceListFind' /home/soulxu/data/work-code/libvirt/src/qemu/qemu_hostdev.c:230: undefined reference to `pciDeviceListFind' ../src/.libs/libvirt_driver_qemu.a(libvirt_driver_qemu_la-qemu_hostdev.o): In function `qemuGetActivePciHostDeviceList': /home/soulxu/data/work-code/libvirt/src/qemu/qemu_hostdev.c:102: undefined reference to `pciDeviceListFind' ../src/.libs/libvirt_driver_qemu.a(libvirt_driver_qemu_la-qemu_hostdev.o): In function `qemuDomainReAttachHostdevDevices': /home/soulxu/data/work-code/libvirt/src/qemu/qemu_hostdev.c:370: undefined reference to `pciDeviceListFind' Signed-off-by: Xu He Jie <xuhj(a)linux.vnet.ibm.com> --- src/libvirt_private.syms | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 1e03e33..61f4dc4 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -892,6 +892,7 @@ pciDeviceListFree; pciDeviceListGet; pciDeviceListNew; pciDeviceListSteal; +pciDeviceListFind; pciDeviceNetName; pciDeviceReAttachInit; pciDeviceSetManaged; -- 1.7.4.1

3 3

[libvirt] [PATCH] qemu: Relax -no-shutdown check to [0.14.0, 0.15.0]
by Jiri Denemark 18 Oct '11

18 Oct '11

The patch that fixes SIGTERM handling with -no-shutdown was taken into 0.15.1 stable release of qemu. --- src/qemu/qemu_capabilities.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 8f16a49..2f55000 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -1018,9 +1018,9 @@ qemuCapsComputeCmdFlags(const char *help, /* Do not use -no-shutdown if qemu doesn't support it or SIGTERM handling * is most likely buggy when used with -no-shutdown (which applies for qemu - * 0.14.* and <0.15.50) + * 0.14.* and 0.15.0) */ - if (strstr(help, "-no-shutdown") && (version < 14000 || version >= 15050)) + if (strstr(help, "-no-shutdown") && (version < 14000 || version > 15000)) qemuCapsSet(flags, QEMU_CAPS_NO_SHUTDOWN); /* -- 1.7.7

2 2

[libvirt] [PATCH] Fix VPATH build
by Jiri Denemark 18 Oct '11

18 Oct '11

probes.h is generated in build directory; setting a dependency on probes.h from source directory doesn't work well in VPATH builds. Caused by commit 1afcfbdda0cac112faa61f74ec943e46aa43f2f5 --- src/Makefile.am | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/Makefile.am b/src/Makefile.am index 510e5ef..87d91ed 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -191,7 +191,7 @@ REMOTE_DRIVER_GENERATED = \ # The remote RPC driver needs probes.h if WITH_DTRACE -REMOTE_DRIVER_GENERATED += $(srcdir)/probes.h +REMOTE_DRIVER_GENERATED += probes.h endif REMOTE_PROTOCOL = $(srcdir)/remote/remote_protocol.x -- 1.7.7

2 2

[libvirt] [PATCH] qemu: Honor the original properties of PCI device when detaching
by Osier Yang 18 Oct '11

18 Oct '11

This patch fixes two problems: 1) The device will be reattached to host even if it's not managed, as there is a "pciDeviceSetManaged". 2) The device won't be reattached to host with original driver properly. As it doesn't honor the device original properties which are maintained by driver->activePciHostdevs. --- src/qemu/qemu_hotplug.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index bfa524b..f3f0060 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1956,6 +1956,7 @@ int qemuDomainDetachHostPciDevice(struct qemud_driver *driver, qemuDomainObjPrivatePtr priv = vm->privateData; int i, ret; pciDevice *pci; + pciDevice *activePci; for (i = 0 ; i < vm->def->nhostdevs ; i++) { if (vm->def->hostdevs[i]->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS || @@ -2015,16 +2016,15 @@ int qemuDomainDetachHostPciDevice(struct qemud_driver *driver, detach->source.subsys.u.pci.bus, detach->source.subsys.u.pci.slot, detach->source.subsys.u.pci.function); - if (!pci) - ret = -1; - else { - pciDeviceSetManaged(pci, detach->managed); - pciDeviceListDel(driver->activePciHostdevs, pci); - if (pciResetDevice(pci, driver->activePciHostdevs, NULL) < 0) + if (pci) { + activePci = pciDeviceListSteal(driver->activePciHostdevs, pci); + if (pciResetDevice(activePci, driver->activePciHostdevs, NULL) < 0) ret = -1; - pciDeviceReAttachInit(pci); - qemuReattachPciDevice(pci, driver); + qemuReattachPciDevice(activePci, driver); pciFreeDevice(pci); + pciFreeDevice(activePci); + } else { + ret = -1; } if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE) && -- 1.7.6

2 2

[libvirt] [PATCH] qemu: Do not wait if the PCI device is not managed when reattaching
by Osier Yang 18 Oct '11

18 Oct '11

Waiting for qemu-kvm cleaning up the PCI bar(s) mapping with long time while the device is not managed is just waste of time. --- src/qemu/qemu_hostdev.c | 15 ++++++++------- 1 files changed, 8 insertions(+), 7 deletions(-) diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index c65f6f5..1fb373e 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -322,19 +322,20 @@ void qemuReattachPciDevice(pciDevice *dev, struct qemud_driver *driver) { int retries = 100; + if (!pciDeviceGetManaged(dev)) + return; + while (pciWaitForDeviceCleanup(dev, "kvm_assigned_device") && retries) { usleep(100*1000); retries--; } - if (pciDeviceGetManaged(dev)) { - if (pciReAttachDevice(dev, driver->activePciHostdevs) < 0) { - virErrorPtr err = virGetLastError(); - VIR_ERROR(_("Failed to re-attach PCI device: %s"), - err ? err->message : _("unknown error")); - virResetError(err); - } + if (pciReAttachDevice(dev, driver->activePciHostdevs) < 0) { + virErrorPtr err = virGetLastError(); + VIR_ERROR(_("Failed to re-attach PCI device: %s"), + err ? err->message : _("unknown error")); + virResetError(err); } } -- 1.7.6

2 2

[libvirt] [PATCH] Add support for autodestroy of guests to the LXC and UML drivers
by Daniel P. Berrange 17 Oct '11

17 Oct '11

From: "Daniel P. Berrange" <berrange(a)redhat.com> I wrote this months ago and thought I had already submitted/merged it. Obviously not. I need this for the virt sandbox tools asap. We recently added support for VIR_DOMAIN_START_AUTODESTROY and an impl to the QEMU driver. It is very desirable to support in other drivers, so this adds it to LXC and UML * src/lxc/lxc_conf.h, src/lxc/lxc_driver.c, src/uml/uml_conf.h, src/uml/uml_driver.c: Wire up autodestroy functions --- src/lxc/lxc_conf.h | 5 ++ src/lxc/lxc_driver.c | 140 +++++++++++++++++++++++++++++++++++++++++-- src/uml/uml_conf.h | 6 ++ src/uml/uml_driver.c | 164 +++++++++++++++++++++++++++++++++++++++++++------- 4 files changed, 289 insertions(+), 26 deletions(-) diff --git a/src/lxc/lxc_conf.h b/src/lxc/lxc_conf.h index 66aa469..b124330 100644 --- a/src/lxc/lxc_conf.h +++ b/src/lxc/lxc_conf.h @@ -56,6 +56,11 @@ struct __lxc_driver { int have_netns; virDomainEventStatePtr domainEventState; + + /* Mapping of 'char *uuidstr' -> virConnectPtr + * of guests which will be automatically killed + * when the virConnectPtr is closed*/ + virHashTablePtr autodestroy; }; int lxcLoadDriverConfig(lxc_driver_t *driver); diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c index c475887..f08e8d1 100644 --- a/src/lxc/lxc_driver.c +++ b/src/lxc/lxc_driver.c @@ -110,6 +110,19 @@ static void lxcDomainEventFlush(int timer, void *opaque); static void lxcDomainEventQueue(lxc_driver_t *driver, virDomainEventPtr event); +static int lxcVmTerminate(lxc_driver_t *driver, + virDomainObjPtr vm, + virDomainShutoffReason reason); +static int lxcProcessAutoDestroyInit(lxc_driver_t *driver); +static void lxcProcessAutoDestroyRun(lxc_driver_t *driver, + virConnectPtr conn); +static void lxcProcessAutoDestroyShutdown(lxc_driver_t *driver); +static int lxcProcessAutoDestroyAdd(lxc_driver_t *driver, + virDomainObjPtr vm, + virConnectPtr conn); +static int lxcProcessAutoDestroyRemove(lxc_driver_t *driver, + virDomainObjPtr vm); + static virDrvOpenStatus lxcOpen(virConnectPtr conn, virConnectAuthPtr auth ATTRIBUTE_UNUSED, @@ -165,6 +178,7 @@ static int lxcClose(virConnectPtr conn) lxcDriverLock(driver); virDomainEventCallbackListRemoveConn(conn, driver->domainEventState->callbacks); + lxcProcessAutoDestroyRun(driver, conn); lxcDriverUnlock(driver); conn->privateData = NULL; @@ -1001,6 +1015,104 @@ cleanup: } +static int lxcProcessAutoDestroyInit(lxc_driver_t *driver) +{ + if (!(driver->autodestroy = virHashCreate(5, NULL))) + return -1; + + return 0; +} + +struct lxcProcessAutoDestroyData { + lxc_driver_t *driver; + virConnectPtr conn; +}; + +static void lxcProcessAutoDestroyDom(void *payload, + const void *name, + void *opaque) +{ + struct lxcProcessAutoDestroyData *data = opaque; + virConnectPtr conn = payload; + const char *uuidstr = name; + unsigned char uuid[VIR_UUID_BUFLEN]; + virDomainObjPtr dom; + virDomainEventPtr event = NULL; + + VIR_DEBUG("conn=%p uuidstr=%s thisconn=%p", conn, uuidstr, data->conn); + + if (data->conn != conn) + return; + + if (virUUIDParse(uuidstr, uuid) < 0) { + VIR_WARN("Failed to parse %s", uuidstr); + return; + } + + if (!(dom = virDomainFindByUUID(&data->driver->domains, + uuid))) { + VIR_DEBUG("No domain object to kill"); + return; + } + + VIR_DEBUG("Killing domain"); + lxcVmTerminate(data->driver, dom, VIR_DOMAIN_SHUTOFF_DESTROYED); + virDomainAuditStop(dom, "destroyed"); + event = virDomainEventNewFromObj(dom, + VIR_DOMAIN_EVENT_STOPPED, + VIR_DOMAIN_EVENT_STOPPED_DESTROYED); + + if (dom && !dom->persistent) + virDomainRemoveInactive(&data->driver->domains, dom); + + if (dom) + virDomainObjUnlock(dom); + if (event) + lxcDomainEventQueue(data->driver, event); + virHashRemoveEntry(data->driver->autodestroy, uuidstr); +} + +/* + * Precondition: driver is locked + */ +static void lxcProcessAutoDestroyRun(lxc_driver_t *driver, virConnectPtr conn) +{ + struct lxcProcessAutoDestroyData data = { + driver, conn + }; + VIR_DEBUG("conn=%p", conn); + virHashForEach(driver->autodestroy, lxcProcessAutoDestroyDom, &data); +} + +static void lxcProcessAutoDestroyShutdown(lxc_driver_t *driver) +{ + virHashFree(driver->autodestroy); +} + +static int lxcProcessAutoDestroyAdd(lxc_driver_t *driver, + virDomainObjPtr vm, + virConnectPtr conn) +{ + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(vm->def->uuid, uuidstr); + VIR_DEBUG("vm=%s uuid=%s conn=%p", vm->def->name, uuidstr, conn); + if (virHashAddEntry(driver->autodestroy, uuidstr, conn) < 0) + return -1; + return 0; +} + +static int lxcProcessAutoDestroyRemove(lxc_driver_t *driver, + virDomainObjPtr vm) +{ + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(vm->def->uuid, uuidstr); + VIR_DEBUG("vm=%s uuid=%s", vm->def->name, uuidstr); + if (virHashRemoveEntry(driver->autodestroy, uuidstr) < 0) + return -1; + return 0; +} + + /** * lxcVmCleanup: * @driver: pointer to driver structure @@ -1028,6 +1140,9 @@ static void lxcVmCleanup(lxc_driver_t *driver, VIR_FREE(xml); } + /* Stop autodestroy in case guest is restarted */ + lxcProcessAutoDestroyRemove(driver, vm); + virEventRemoveHandle(priv->monitorWatch); VIR_FORCE_CLOSE(priv->monitor); @@ -1496,6 +1611,7 @@ cleanup: * @conn: pointer to connection * @driver: pointer to driver structure * @vm: pointer to virtual machine structure + * @autoDestroy: mark the domain for auto destruction * @reason: reason for switching vm to running state * * Starts a vm @@ -1505,6 +1621,7 @@ cleanup: static int lxcVmStart(virConnectPtr conn, lxc_driver_t * driver, virDomainObjPtr vm, + bool autoDestroy, virDomainRunningReason reason) { int rc = -1, r; @@ -1665,6 +1782,10 @@ static int lxcVmStart(virConnectPtr conn, goto cleanup; } + if (autoDestroy && + lxcProcessAutoDestroyAdd(driver, vm, conn) < 0) + goto cleanup; + /* * Again, need to save the live configuration, because the function * requires vm->def->id != -1 to save tty info surely. @@ -1719,7 +1840,7 @@ static int lxcDomainStartWithFlags(virDomainPtr dom, unsigned int flags) virDomainEventPtr event = NULL; int ret = -1; - virCheckFlags(0, -1); + virCheckFlags(VIR_DOMAIN_START_AUTODESTROY, -1); lxcDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); @@ -1743,7 +1864,9 @@ static int lxcDomainStartWithFlags(virDomainPtr dom, unsigned int flags) goto cleanup; } - ret = lxcVmStart(dom->conn, driver, vm, VIR_DOMAIN_RUNNING_BOOTED); + ret = lxcVmStart(dom->conn, driver, vm, + (flags & VIR_DOMAIN_START_AUTODESTROY), + VIR_DOMAIN_RUNNING_BOOTED); if (ret == 0) { event = virDomainEventNewFromObj(vm, @@ -1796,7 +1919,7 @@ lxcDomainCreateAndStart(virConnectPtr conn, virDomainPtr dom = NULL; virDomainEventPtr event = NULL; - virCheckFlags(0, NULL); + virCheckFlags(VIR_DOMAIN_START_AUTODESTROY, NULL); lxcDriverLock(driver); if (!(def = virDomainDefParseString(driver->caps, xml, @@ -1819,7 +1942,9 @@ lxcDomainCreateAndStart(virConnectPtr conn, goto cleanup; def = NULL; - if (lxcVmStart(conn, driver, vm, VIR_DOMAIN_RUNNING_BOOTED) < 0) { + if (lxcVmStart(conn, driver, vm, + (flags & VIR_DOMAIN_START_AUTODESTROY), + VIR_DOMAIN_RUNNING_BOOTED) < 0) { virDomainAuditStart(vm, "booted", false); virDomainRemoveInactive(&driver->domains, vm); vm = NULL; @@ -2054,7 +2179,7 @@ lxcAutostartDomain(void *payload, const void *name ATTRIBUTE_UNUSED, void *opaqu virDomainObjLock(vm); if (vm->autostart && !virDomainObjIsActive(vm)) { - int ret = lxcVmStart(data->conn, data->driver, vm, + int ret = lxcVmStart(data->conn, data->driver, vm, false, VIR_DOMAIN_RUNNING_BOOTED); virDomainAuditStart(vm, "booted", ret >= 0); if (ret < 0) { @@ -2205,6 +2330,9 @@ static int lxcStartup(int privileged) lxc_driver->caps->privateDataAllocFunc = lxcDomainObjPrivateAlloc; lxc_driver->caps->privateDataFreeFunc = lxcDomainObjPrivateFree; + if (lxcProcessAutoDestroyInit(lxc_driver) < 0) + goto cleanup; + /* Get all the running persistent or transient configs first */ if (virDomainLoadAllConfigs(lxc_driver->caps, &lxc_driver->domains, @@ -2285,6 +2413,8 @@ static int lxcShutdown(void) virDomainObjListDeinit(&lxc_driver->domains); virDomainEventStateFree(lxc_driver->domainEventState); + lxcProcessAutoDestroyShutdown(lxc_driver); + virCapabilitiesFree(lxc_driver->caps); VIR_FREE(lxc_driver->configDir); VIR_FREE(lxc_driver->autostartDir); diff --git a/src/uml/uml_conf.h b/src/uml/uml_conf.h index 5401a7e..657f877 100644 --- a/src/uml/uml_conf.h +++ b/src/uml/uml_conf.h @@ -33,6 +33,7 @@ # include "virterror_internal.h" # include "threads.h" # include "command.h" +# include "hash.h" # define umlDebug(fmt, ...) do {} while(0) @@ -64,6 +65,11 @@ struct uml_driver { /* Event handling */ virDomainEventStatePtr domainEventState; + + /* Mapping of 'char *uuidstr' -> virConnectPtr + * of guests which will be automatically killed + * when the virConnectPtr is closed*/ + virHashTablePtr autodestroy; }; diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c index 2b7219a..16ab73a 100644 --- a/src/uml/uml_driver.c +++ b/src/uml/uml_driver.c @@ -75,6 +75,16 @@ struct _umlDomainObjPrivate { int monitorWatch; }; +static int umlProcessAutoDestroyInit(struct uml_driver *driver); +static void umlProcessAutoDestroyRun(struct uml_driver *driver, + virConnectPtr conn); +static void umlProcessAutoDestroyShutdown(struct uml_driver *driver); +static int umlProcessAutoDestroyAdd(struct uml_driver *driver, + virDomainObjPtr vm, + virConnectPtr conn); +static int umlProcessAutoDestroyRemove(struct uml_driver *driver, + virDomainObjPtr vm); + static int umlShutdown(void); @@ -119,10 +129,10 @@ static void umlDomainEventQueue(struct uml_driver *driver, static int umlStartVMDaemon(virConnectPtr conn, struct uml_driver *driver, - virDomainObjPtr vm); + virDomainObjPtr vm, + bool autoDestroy); -static void umlShutdownVMDaemon(virConnectPtr conn, - struct uml_driver *driver, +static void umlShutdownVMDaemon(struct uml_driver *driver, virDomainObjPtr vm, virDomainShutoffReason reason); @@ -150,7 +160,7 @@ umlAutostartDomain(void *payload, const void *name ATTRIBUTE_UNUSED, void *opaqu !virDomainObjIsActive(vm)) { int ret; virResetLastError(); - ret = umlStartVMDaemon(data->conn, data->driver, vm); + ret = umlStartVMDaemon(data->conn, data->driver, vm, false); virDomainAuditStart(vm, "booted", ret >= 0); if (ret < 0) { virErrorPtr err = virGetLastError(); @@ -309,7 +319,7 @@ reread: continue; } - umlShutdownVMDaemon(NULL, driver, dom, VIR_DOMAIN_SHUTOFF_SHUTDOWN); + umlShutdownVMDaemon(driver, dom, VIR_DOMAIN_SHUTOFF_SHUTDOWN); virDomainAuditStop(dom, "shutdown"); event = virDomainEventNewFromObj(dom, VIR_DOMAIN_EVENT_STOPPED, @@ -337,7 +347,7 @@ reread: if (umlOpenMonitor(driver, dom) < 0) { VIR_WARN("Could not open monitor for new domain"); - umlShutdownVMDaemon(NULL, driver, dom, + umlShutdownVMDaemon(driver, dom, VIR_DOMAIN_SHUTOFF_FAILED); virDomainAuditStop(dom, "failed"); event = virDomainEventNewFromObj(dom, @@ -350,7 +360,7 @@ reread: } } else if (umlIdentifyChrPTY(driver, dom) < 0) { VIR_WARN("Could not identify character devices for new domain"); - umlShutdownVMDaemon(NULL, driver, dom, + umlShutdownVMDaemon(driver, dom, VIR_DOMAIN_SHUTOFF_FAILED); virDomainAuditStop(dom, "failed"); event = virDomainEventNewFromObj(dom, @@ -480,6 +490,9 @@ umlStartup(int privileged) umlInotifyEvent, uml_driver, NULL)) < 0) goto error; + if (umlProcessAutoDestroyInit(uml_driver) < 0) + goto error; + if (virDomainLoadAllConfigs(uml_driver->caps, &uml_driver->domains, uml_driver->configDir, @@ -577,7 +590,7 @@ umlShutdownOneVM(void *payload, const void *name ATTRIBUTE_UNUSED, void *opaque) virDomainObjLock(dom); if (virDomainObjIsActive(dom)) { - umlShutdownVMDaemon(NULL, driver, dom, VIR_DOMAIN_SHUTOFF_SHUTDOWN); + umlShutdownVMDaemon(driver, dom, VIR_DOMAIN_SHUTOFF_SHUTDOWN); virDomainAuditStop(dom, "shutdown"); } virDomainObjUnlock(dom); @@ -612,6 +625,8 @@ umlShutdown(void) { VIR_FREE(uml_driver->autostartDir); VIR_FREE(uml_driver->monitorDir); + umlProcessAutoDestroyShutdown(uml_driver); + if (uml_driver->brctl) brShutdown(uml_driver->brctl); @@ -623,6 +638,104 @@ umlShutdown(void) { } +static int umlProcessAutoDestroyInit(struct uml_driver *driver) +{ + if (!(driver->autodestroy = virHashCreate(5, NULL))) + return -1; + + return 0; +} + +struct umlProcessAutoDestroyData { + struct uml_driver *driver; + virConnectPtr conn; +}; + +static void umlProcessAutoDestroyDom(void *payload, + const void *name, + void *opaque) +{ + struct umlProcessAutoDestroyData *data = opaque; + virConnectPtr conn = payload; + const char *uuidstr = name; + unsigned char uuid[VIR_UUID_BUFLEN]; + virDomainObjPtr dom; + virDomainEventPtr event = NULL; + + VIR_DEBUG("conn=%p uuidstr=%s thisconn=%p", conn, uuidstr, data->conn); + + if (data->conn != conn) + return; + + if (virUUIDParse(uuidstr, uuid) < 0) { + VIR_WARN("Failed to parse %s", uuidstr); + return; + } + + if (!(dom = virDomainFindByUUID(&data->driver->domains, + uuid))) { + VIR_DEBUG("No domain object to kill"); + return; + } + + VIR_DEBUG("Killing domain"); + umlShutdownVMDaemon(data->driver, dom, VIR_DOMAIN_SHUTOFF_DESTROYED); + virDomainAuditStop(dom, "destroyed"); + event = virDomainEventNewFromObj(dom, + VIR_DOMAIN_EVENT_STOPPED, + VIR_DOMAIN_EVENT_STOPPED_DESTROYED); + + if (dom && !dom->persistent) + virDomainRemoveInactive(&data->driver->domains, dom); + + if (dom) + virDomainObjUnlock(dom); + if (event) + umlDomainEventQueue(data->driver, event); + virHashRemoveEntry(data->driver->autodestroy, uuidstr); +} + +/* + * Precondition: driver is locked + */ +static void umlProcessAutoDestroyRun(struct uml_driver *driver, virConnectPtr conn) +{ + struct umlProcessAutoDestroyData data = { + driver, conn + }; + VIR_DEBUG("conn=%p", conn); + virHashForEach(driver->autodestroy, umlProcessAutoDestroyDom, &data); +} + +static void umlProcessAutoDestroyShutdown(struct uml_driver *driver) +{ + virHashFree(driver->autodestroy); +} + +static int umlProcessAutoDestroyAdd(struct uml_driver *driver, + virDomainObjPtr vm, + virConnectPtr conn) +{ + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(vm->def->uuid, uuidstr); + VIR_DEBUG("vm=%s uuid=%s conn=%p", vm->def->name, uuidstr, conn); + if (virHashAddEntry(driver->autodestroy, uuidstr, conn) < 0) + return -1; + return 0; +} + +static int umlProcessAutoDestroyRemove(struct uml_driver *driver, + virDomainObjPtr vm) +{ + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(vm->def->uuid, uuidstr); + VIR_DEBUG("vm=%s uuid=%s", vm->def->name, uuidstr); + if (virHashRemoveEntry(driver->autodestroy, uuidstr) < 0) + return -1; + return 0; +} + + static int umlReadPidFile(struct uml_driver *driver, virDomainObjPtr vm) { @@ -842,8 +955,7 @@ error: } -static int umlCleanupTapDevices(virConnectPtr conn ATTRIBUTE_UNUSED, - virDomainObjPtr vm) { +static int umlCleanupTapDevices(virDomainObjPtr vm) { int i; int err; int ret = 0; @@ -873,7 +985,8 @@ static int umlCleanupTapDevices(virConnectPtr conn ATTRIBUTE_UNUSED, static int umlStartVMDaemon(virConnectPtr conn, struct uml_driver *driver, - virDomainObjPtr vm) { + virDomainObjPtr vm, + bool autoDestroy) { int ret; char *logfile; int logfd = -1; @@ -935,7 +1048,7 @@ static int umlStartVMDaemon(virConnectPtr conn, if (!(cmd = umlBuildCommandLine(conn, driver, vm))) { VIR_FORCE_CLOSE(logfd); virDomainConfVMNWFilterTeardown(vm); - umlCleanupTapDevices(conn, vm); + umlCleanupTapDevices(vm); return -1; } @@ -953,13 +1066,17 @@ static int umlStartVMDaemon(virConnectPtr conn, if (ret < 0) goto cleanup; + if (autoDestroy && + umlProcessAutoDestroyAdd(driver, vm, conn) < 0) + goto cleanup; + ret = virDomainObjSetDefTransient(driver->caps, vm, false); cleanup: virCommandFree(cmd); if (ret < 0) { virDomainConfVMNWFilterTeardown(vm); - umlCleanupTapDevices(conn, vm); + umlCleanupTapDevices(vm); } /* NB we don't mark it running here - we do that async @@ -972,8 +1089,7 @@ cleanup: return ret; } -static void umlShutdownVMDaemon(virConnectPtr conn ATTRIBUTE_UNUSED, - struct uml_driver *driver ATTRIBUTE_UNUSED, +static void umlShutdownVMDaemon(struct uml_driver *driver, virDomainObjPtr vm, virDomainShutoffReason reason) { @@ -997,7 +1113,10 @@ static void umlShutdownVMDaemon(virConnectPtr conn ATTRIBUTE_UNUSED, virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, reason); virDomainConfVMNWFilterTeardown(vm); - umlCleanupTapDevices(conn, vm); + umlCleanupTapDevices(vm); + + /* Stop autodestroy in case guest is restarted */ + umlProcessAutoDestroyRemove(driver, vm); if (vm->newDef) { virDomainDefFree(vm->def); @@ -1072,6 +1191,7 @@ static int umlClose(virConnectPtr conn) { umlDriverLock(driver); virDomainEventCallbackListRemoveConn(conn, driver->domainEventState->callbacks); + umlProcessAutoDestroyRun(driver, conn); umlDriverUnlock(driver); conn->privateData = NULL; @@ -1342,7 +1462,7 @@ static virDomainPtr umlDomainCreate(virConnectPtr conn, const char *xml, virDomainPtr dom = NULL; virDomainEventPtr event = NULL; - virCheckFlags(0, NULL); + virCheckFlags(VIR_DOMAIN_START_AUTODESTROY, NULL); umlDriverLock(driver); if (!(def = virDomainDefParseString(driver->caps, xml, @@ -1359,7 +1479,8 @@ static virDomainPtr umlDomainCreate(virConnectPtr conn, const char *xml, goto cleanup; def = NULL; - if (umlStartVMDaemon(conn, driver, vm) < 0) { + if (umlStartVMDaemon(conn, driver, vm, + (flags & VIR_DOMAIN_START_AUTODESTROY)) < 0) { virDomainAuditStart(vm, "booted", false); virDomainRemoveInactive(&driver->domains, vm); @@ -1436,7 +1557,7 @@ umlDomainDestroyFlags(virDomainPtr dom, goto cleanup; } - umlShutdownVMDaemon(dom->conn, driver, vm, VIR_DOMAIN_SHUTOFF_DESTROYED); + umlShutdownVMDaemon(driver, vm, VIR_DOMAIN_SHUTOFF_DESTROYED); virDomainAuditStop(vm, "destroyed"); event = virDomainEventNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, @@ -1717,7 +1838,7 @@ static int umlDomainStartWithFlags(virDomainPtr dom, unsigned int flags) { virDomainEventPtr event = NULL; int ret = -1; - virCheckFlags(0, -1); + virCheckFlags(VIR_DOMAIN_START_AUTODESTROY, -1); umlDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); @@ -1728,7 +1849,8 @@ static int umlDomainStartWithFlags(virDomainPtr dom, unsigned int flags) { goto cleanup; } - ret = umlStartVMDaemon(dom->conn, driver, vm); + ret = umlStartVMDaemon(dom->conn, driver, vm, + (flags & VIR_DOMAIN_START_AUTODESTROY)); virDomainAuditStart(vm, "booted", ret >= 0); if (ret == 0) event = virDomainEventNewFromObj(vm, -- 1.7.6.4

2 1

[libvirt] [PATCH 0/3] snapshot: another snapshot-list filter
by Eric Blake 17 Oct '11

17 Oct '11

Previously, we could filter 'virsh snapshot-list --roots' to show just snapshots lacking parents, which is good for top-down algorithms. But sometimes you want just snapshots lacking children, for bottom-up algorithms - this implements that. Once again, I can only compile-test esx. Also, I haven't yet spent time with the vbox code to write up this patch, partly because the previous round of factoring it into reusable recursive iteration is still in churn in an edit-compile-test cycle between Matthias and me. I'm still debating on whether to emulate --leaves when talking to an 0.9.5 server. Probably not too hard... Eric Blake (3): snapshot: add API for filtering by leaves snapshot: implement LIST_LEAVES flag in qemu snapshot: implement LIST_LEAVES flag in esx include/libvirt/libvirt.h.in | 2 ++ src/conf/domain_conf.c | 8 ++++++-- src/esx/esx_driver.c | 29 +++++++++++++++++++++-------- src/esx/esx_vi.c | 27 ++++++++++++++++----------- src/esx/esx_vi.h | 4 ++-- src/libvirt.c | 16 ++++++++++++++-- src/qemu/qemu_driver.c | 12 ++++++++---- tools/virsh.c | 12 ++++++++++++ tools/virsh.pod | 7 ++++++- 9 files changed, 87 insertions(+), 30 deletions(-) -- 1.7.4.4

3 9

[libvirt] [PATCH v2] qemu: Do not reattach PCI device used by other domain when shutdown
by Osier Yang 17 Oct '11

17 Oct '11

When failing on starting a domain, it tries to reattach all the PCI devices defined in the domain conf, regardless of whether the devices are still used by other domain. This will cause the devices to be deleted from the list qemu_driver->activePciHostdevs, thus the devices will be thought as usable even if it's not true. And following commands nodedev-{reattach,reset} will be successful. How to reproduce: 1) Define two domains with same PCI device defined in the confs. 2) # virsh start domain1 3) # virsh start domain2 4) # virsh nodedev-reattach $pci_device You will see the device will be reattached to host successfully. As pciDeviceReattach just check if the device is still used by other domain via checking if the device is in list driver->activePciHostdevs, however, the device is deleted from the list by step 2). This patch is to prohibit the bug by: 1) Prohibit a domain starting or device attachment right at preparation period (qemuPrepareHostdevPCIDevices) if the device is in list driver->activePciHostdevs, which means it's used by other domain. 2) Introduces a new field for struct _pciDevice, (const char *used_by), it will be set as the domain name at preparation period, (qemuPrepareHostdevPCIDevices). Thus we can prohibit deleting the device from driver->activePciHostdevs if it's still used by other domain when stopping the domain process. * src/pci.h (define two internal functions, pciDeviceSetUsedBy and pciDevceGetUsedBy) * src/pci.c (new field "const char *used_by" for struct _pciDevice, implementations for the two new functions) * src/libvirt_private.syms (Add the two new internal functions) * src/qemu_hostdev.h (Modify the definition of functions qemuPrepareHostdevPCIDevices, and qemuDomainReAttachHostdevDevices) * src/qemu_hostdev.c (Prohibit preparation and don't delete the device from activePciHostdevs list if it's still used by other domain) * src/qemu_hotplug.c (Update function usage, as the definitions are changed) v1 - v2: * char * used_by => const char *used_by, and no strdup() * Other nits pointed out by Eric. --- src/libvirt_private.syms | 2 ++ src/qemu/qemu_hostdev.c | 43 ++++++++++++++++++++++++++++++++++++++----- src/qemu/qemu_hostdev.h | 2 ++ src/qemu/qemu_hotplug.c | 4 ++-- src/util/pci.c | 15 +++++++++++++++ src/util/pci.h | 3 +++ 6 files changed, 62 insertions(+), 7 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 4f96518..4d50d86 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -880,6 +880,7 @@ virNWFilterHashTableRemoveEntry; pciDettachDevice; pciDeviceFileIterate; pciDeviceGetManaged; +pciDeviceGetUsedBy; pciDeviceIsAssignable; pciDeviceIsVirtualFunction; pciDeviceListAdd; @@ -892,6 +893,7 @@ pciDeviceListSteal; pciDeviceNetName; pciDeviceReAttachInit; pciDeviceSetManaged; +pciDeviceSetUsedBy; pciFreeDevice; pciGetDevice; pciGetPhysicalFunction; diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index 6f77717..f354ea8 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -101,6 +101,7 @@ cleanup: int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver, + const char *name, virDomainHostdevDefPtr *hostdevs, int nhostdevs) { @@ -111,7 +112,7 @@ int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver, if (!(pcidevs = qemuGetPciHostDeviceList(hostdevs, nhostdevs))) return -1; - /* We have to use 4 loops here. *All* devices must + /* We have to use 6 loops here. *All* devices must * be detached before we reset any of them, because * in some cases you have to reset the whole PCI, * which impacts all devices on it. Also, all devices @@ -125,9 +126,16 @@ int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver, for (i = 0; i < pciDeviceListCount(pcidevs); i++) { pciDevice *dev = pciDeviceListGet(pcidevs, i); - if (!pciDeviceIsAssignable(dev, !driver->relaxedACS)) - goto reattachdevs; + /* The device is in use by other active domain if + * the dev is in list driver->activePciHostdevs. + */ + if (!pciDeviceIsAssignable(dev, !driver->relaxedACS) || + pciDeviceListFind(driver->activePciHostdevs, dev)) + goto cleanup; + } + for (i = 0; i < pciDeviceListCount(pcidevs); i++) { + pciDevice *dev = pciDeviceListGet(pcidevs, i); if (pciDeviceGetManaged(dev) && pciDettachDevice(dev, driver->activePciHostdevs) < 0) goto reattachdevs; @@ -150,6 +158,18 @@ int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver, } } + /* Now set the used_by_domain of the device in driver->activePciHostdevs + * as domain name. + */ + for (i = 0; i < pciDeviceListCount(pcidevs); i++) { + pciDevice *dev, *activeDev; + + dev = pciDeviceListGet(pcidevs, i); + activeDev = pciDeviceListFind(driver->activePciHostdevs, dev); + + pciDeviceSetUsedBy(activeDev, name); + } + /* Now steal all the devices from pcidevs */ while (pciDeviceListCount(pcidevs) > 0) { pciDevice *dev = pciDeviceListGet(pcidevs, 0); @@ -183,7 +203,7 @@ static int qemuPrepareHostPCIDevices(struct qemud_driver *driver, virDomainDefPtr def) { - return qemuPrepareHostdevPCIDevices(driver, def->hostdevs, def->nhostdevs); + return qemuPrepareHostdevPCIDevices(driver, def->name, def->hostdevs, def->nhostdevs); } @@ -258,6 +278,7 @@ void qemuReattachPciDevice(pciDevice *dev, struct qemud_driver *driver) void qemuDomainReAttachHostdevDevices(struct qemud_driver *driver, + const char *name, virDomainHostdevDefPtr *hostdevs, int nhostdevs) { @@ -277,6 +298,18 @@ void qemuDomainReAttachHostdevDevices(struct qemud_driver *driver, for (i = 0; i < pciDeviceListCount(pcidevs); i++) { pciDevice *dev = pciDeviceListGet(pcidevs, i); + pciDevice *activeDev = NULL; + const char *used_by = NULL; + + /* Never delete the dev from list driver->activePciHostdevs + * if it's used by other domain. + */ + activeDev = pciDeviceListFind(driver->activePciHostdevs, dev); + if (activeDev && + (used_by = pciDeviceGetUsedBy(activeDev)) && + STRNEQ(name, used_by)) + continue; + pciDeviceListDel(driver->activePciHostdevs, dev); } @@ -305,5 +338,5 @@ void qemuDomainReAttachHostDevices(struct qemud_driver *driver, if (!def->nhostdevs) return; - qemuDomainReAttachHostdevDevices(driver, def->hostdevs, def->nhostdevs); + qemuDomainReAttachHostdevDevices(driver, def->name, def->hostdevs, def->nhostdevs); } diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h index 1f3d1bc..07d7de2 100644 --- a/src/qemu/qemu_hostdev.h +++ b/src/qemu/qemu_hostdev.h @@ -30,12 +30,14 @@ int qemuUpdateActivePciHostdevs(struct qemud_driver *driver, virDomainDefPtr def); int qemuPrepareHostdevPCIDevices(struct qemud_driver *driver, + const char *name, virDomainHostdevDefPtr *hostdevs, int nhostdevs); int qemuPrepareHostDevices(struct qemud_driver *driver, virDomainDefPtr def); void qemuReattachPciDevice(pciDevice *dev, struct qemud_driver *driver); void qemuDomainReAttachHostdevDevices(struct qemud_driver *driver, + const char *name, virDomainHostdevDefPtr *hostdevs, int nhostdevs); void qemuDomainReAttachHostDevices(struct qemud_driver *driver, diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 4c1705d..bfa524b 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -893,7 +893,7 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver, return -1; } - if (qemuPrepareHostdevPCIDevices(driver, &hostdev, 1) < 0) + if (qemuPrepareHostdevPCIDevices(driver, vm->def->name, &hostdev, 1) < 0) return -1; if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE)) { @@ -959,7 +959,7 @@ error: hostdev->info.addr.pci.slot) < 0) VIR_WARN("Unable to release PCI address on host device"); - qemuDomainReAttachHostdevDevices(driver, &hostdev, 1); + qemuDomainReAttachHostdevDevices(driver, vm->def->name, &hostdev, 1); VIR_FREE(devstr); VIR_FREE(configfd_name); diff --git a/src/util/pci.c b/src/util/pci.c index 8d8e157..888784a 100644 --- a/src/util/pci.c +++ b/src/util/pci.c @@ -62,6 +62,7 @@ struct _pciDevice { char name[PCI_ADDR_LEN]; /* domain:bus:slot.function */ char id[PCI_ID_LEN]; /* product vendor */ char *path; + const char *used_by; /* The domain which uses the device */ int fd; unsigned initted; @@ -1312,6 +1313,7 @@ pciGetDevice(unsigned domain, dev->bus = bus; dev->slot = slot; dev->function = function; + dev->used_by = NULL; if (snprintf(dev->name, sizeof(dev->name), "%.4x:%.2x:%.2x.%.1x", dev->domain, dev->bus, dev->slot, @@ -1374,6 +1376,7 @@ pciFreeDevice(pciDevice *dev) VIR_DEBUG("%s %s: freeing", dev->id, dev->name); pciCloseConfig(dev); VIR_FREE(dev->path); + dev->used_by = NULL; VIR_FREE(dev); } @@ -1387,6 +1390,18 @@ unsigned pciDeviceGetManaged(pciDevice *dev) return dev->managed; } +void +pciDeviceSetUsedBy(pciDevice *dev, const char *name) +{ + dev->used_by = name; +} + +const char * +pciDeviceGetUsedBy(pciDevice *dev) +{ + return dev->used_by; +} + void pciDeviceReAttachInit(pciDevice *pci) { pci->unbind_from_stub = 1; diff --git a/src/util/pci.h b/src/util/pci.h index a1600fe..640c6af 100644 --- a/src/util/pci.h +++ b/src/util/pci.h @@ -47,6 +47,9 @@ int pciResetDevice (pciDevice *dev, void pciDeviceSetManaged(pciDevice *dev, unsigned managed); unsigned pciDeviceGetManaged(pciDevice *dev); +void pciDeviceSetUsedBy(pciDevice *dev, + const char *used_by); +const char *pciDeviceGetUsedBy(pciDevice *dev); void pciDeviceReAttachInit(pciDevice *dev); pciDeviceList *pciDeviceListNew (void); -- 1.7.6

2 5

[libvirt] [PATCH] Fix virt-sanlock-cleanup documentation
by Philipp Hahn 17 Oct '11

17 Oct '11

The referenced page does not exist, but locking.html has a section about sanlock. Signed-off-by: Philipp Hahn <hahn(a)univention.de> --- tools/virt-sanlock-cleanup.in | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/virt-sanlock-cleanup.in b/tools/virt-sanlock-cleanup.in index 72cd5e0..e143e7d 100644 --- a/tools/virt-sanlock-cleanup.in +++ b/tools/virt-sanlock-cleanup.in @@ -64,8 +64,8 @@ active. =head1 EXIT STATUS -Upon successful processing of leases cleanup, the exit status -will be 0 will be set. Upon fatal error a non-zero status will +Upon successful processing of leases cleanup, an exit status +of 0 will be set. Upon fatal error a non-zero status will be set. =head1 AUTHOR @@ -91,6 +91,6 @@ PURPOSE =head1 SEE ALSO -C<virsh(1)>, online instructions C<http://libvirt.org/locksanlock.html> +C<virsh(1)>, online instructions C<http://libvirt.org/locking.html> =cut -- 1.7.1

2 1