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[libvirt] What should I do when I want to update the kvm for using libvirt in thel 5.4
by 姚远 02 Aug '10

02 Aug '10

My linux is rhel 5.4. In it, the version of kvm is 83 and the qemu is 0.9.1. Virt-manager and libvirt use "/usr/libexec/qemu-kvm" to manage VMs. Now, I want to use the higher version of kvm, so I download qemu-kvm-0.12.4.tar.gz. tar xvf qemu-kvm-0.12.4.tar.gz cd qemu-kvm-0.12.4 ./configure --prefix=/usr/ make make install Then, qemu-system-x86_86 is appeared, but the executalbe file "qemu-kvm" is not generated. Virt-manager an libvirt do not use "qemu-system-x86_86", they only use "qemu-kvm". What should I do when I want to update kvm for using libvirt in thel 5.4. Maybe I can compile a new "qemu-kvm" to substitute the old one. Thank you for your reply! Best wishes!

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[libvirt] default storage pool will not start
by Albert Hopkins 01 Aug '10

01 Aug '10

Long ago I had a VM that used a qcow image that was in the default directory-based storage pool. Since then the VM and the image have been deleted. But now libvirt will not start without the image file: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/host.py", line 586, in start_pool pool.start() File "/usr/share/virt-manager/virtManager/storagepool.py", line 67, in start self.pool.create(0) File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1039, in create if ret == -1: raise libvirtError ('virStoragePoolCreate() failed', pool=self) libvirtError: cannot open volume '/var/lib/libvirt/images/gstable.qcow2': No such file or directory If I simply "touch" the file, then the pool starts. But I don't want it around. No other vm's reference this file. I've tried deleting and re-creating the pool. I've tried removing all the files in the pool, removing the directory, mkdir'ing the directory and then re-creating the pool, but it still will not start without that file. I've grepped /etc/libvirt for the existence of that filename but it doesn't exist. For the life of me I can't figure out where libvirt is getting this information from and why it thinks it needs this file.

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[libvirt] [PATCH] Remove duplicate </p> from downloads.html.in
by Matthias Bolte 01 Aug '10

01 Aug '10

--- Just pushing this trivial patch. docs/downloads.html.in | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/docs/downloads.html.in b/docs/downloads.html.in index 04fd16c..6872272 100644 --- a/docs/downloads.html.in +++ b/docs/downloads.html.in @@ -69,7 +69,7 @@ <code>make install</code> </p> <p>At that point you may have to rerun ldconfig or a similar utility to - update your list of installed shared libs.</p> + update your list of installed shared libs. </p> <h2>Building from a source code checkout</h2> -- 1.7.0.4

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[libvirt] OpenBSD crash after "shutdown vm"
by Armando 01 Aug '10

01 Aug '10

Good evening all, firstly I'd like to thank you for your wonderful job: it works nicely and simplifies a lot my life :) after saying that, I'd like to expose you a "bug" (not sure if I can call it this way): 1. scenario: as host I've configured a Ubuntu 10.04 with KVM + libvirt + LVM; I have also configured 4 virtual machines, three of wich are OpenBSDs and the other one is Linux (Fedora 13). 2. issue: when I issue a shutdown to a OpenBSD guest using "virsh shutdown vm" what happens is that the guest machine crashes. To be more precise it seems a kernel panic becuase the vnc session through KVM still works as the machine is running but every digit I issue does not appear on the server shell. Also the ssh sessions die; After having a chat in the #libvirt channel I tried doing this both with acpibtn enabled (on OpenBSD is the default behaviour) and also with acpibtn disabled (using the command "boot -c" and then "disable acpi" at boot time in the OpenBSD server). In both cases the server crashes At this point I have found an alternative way to automatically shut down the machine (using ssh) but it would be nice to understand way this happens. Is this a well-known issue? Is there a way to deeply debug it? Thanks a lot! 0x412E

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[libvirt] [PATCH] Update ID after stopping a domain
by Matthias Bolte 30 Jul '10

30 Jul '10

--- src/esx/esx_driver.c | 1 + src/openvz/openvz_driver.c | 1 + src/phyp/phyp_driver.c | 2 ++ src/vbox/vbox_tmpl.c | 1 + src/xenapi/xenapi_driver.c | 1 + 5 files changed, 6 insertions(+), 0 deletions(-) diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c index 964a3a5..913420c 100644 --- a/src/esx/esx_driver.c +++ b/src/esx/esx_driver.c @@ -1620,6 +1620,7 @@ esxDomainDestroy(virDomainPtr domain) goto cleanup; } + domain->id = -1; result = 0; cleanup: diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c index 98381fb..c46f3a7 100644 --- a/src/openvz/openvz_driver.c +++ b/src/openvz/openvz_driver.c @@ -531,6 +531,7 @@ static int openvzDomainShutdown(virDomainPtr dom) { vm->def->id = -1; vm->state = VIR_DOMAIN_SHUTOFF; + dom->id = -1; ret = 0; cleanup: diff --git a/src/phyp/phyp_driver.c b/src/phyp/phyp_driver.c index e4afc5a..7143933 100644 --- a/src/phyp/phyp_driver.c +++ b/src/phyp/phyp_driver.c @@ -3688,6 +3688,8 @@ phypDomainDestroy(virDomainPtr dom) if (phypUUIDTable_RemLpar(dom->conn, dom->id) == -1) goto err; + dom->id = -1; + VIR_FREE(cmd); VIR_FREE(ret); return 0; diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c index 0a91c7f..31fec67 100644 --- a/src/vbox/vbox_tmpl.c +++ b/src/vbox/vbox_tmpl.c @@ -1587,6 +1587,7 @@ static int vboxDomainDestroy(virDomainPtr dom) { } #endif VBOX_RELEASE(console); + dom->id = -1; ret = 0; } data->vboxSession->vtbl->Close(data->vboxSession); diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c index 2262cef..fb3c91d 100644 --- a/src/xenapi/xenapi_driver.c +++ b/src/xenapi/xenapi_driver.c @@ -830,6 +830,7 @@ xenapiDomainDestroy (virDomainPtr dom) return -1; } xen_vm_set_free(vms); + dom->id = -1; return 0; } if (vms) xen_vm_set_free(vms); -- 1.7.0.4

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[libvirt] [PATCH] openvzDomainCreateWithFlags: set domain id to the correct value
by Jean-Baptiste Rouault 30 Jul '10

30 Jul '10

I'm not sure if it's ok or not to modify dom->id as I did here. Regards, Jean-Baptiste

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[libvirt] [PATCH] storage: kill dead stores
by Eric Blake 30 Jul '10

30 Jul '10

Found by clang. Clang complained that virStorageBackendProbeTarget could dereference NULL if backingStoreFormat was NULL, but since all callers passed a valid pointer, I added attributes instead of null checks. * src/storage/storage_backend.c (virStorageBackendQEMUImgBackingFormat): Kill dead store. * src/storage/storage_backend_fs.c (virStorageBackendProbeTarget): Likewise. Skip null checks, by adding attributes. --- Thankfully, the null dereference scenario noted by clang was never triggered in the code, which is good since it was introduced as part of fixing a CVE. src/storage/storage_backend.c | 3 +-- src/storage/storage_backend_fs.c | 34 +++++++++++++++------------------- 2 files changed, 16 insertions(+), 21 deletions(-) diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c index d989743..1fe7ba6 100644 --- a/src/storage/storage_backend.c +++ b/src/storage/storage_backend.c @@ -581,7 +581,6 @@ static int virStorageBackendQEMUImgBackingFormat(const char *qemuimg) int newstdout = -1; char *help = NULL; enum { MAX_HELP_OUTPUT_SIZE = 1024*8 }; - int len; char *start; char *end; char *tmp; @@ -591,7 +590,7 @@ static int virStorageBackendQEMUImgBackingFormat(const char *qemuimg) &child, -1, &newstdout, NULL, VIR_EXEC_CLEAR_CAPS) < 0) goto cleanup; - if ((len = virFileReadLimFD(newstdout, MAX_HELP_OUTPUT_SIZE, &help)) < 0) { + if (virFileReadLimFD(newstdout, MAX_HELP_OUTPUT_SIZE, &help) < 0) { virReportSystemError(errno, _("Unable to read '%s -h' output"), qemuimg); diff --git a/src/storage/storage_backend_fs.c b/src/storage/storage_backend_fs.c index 0761bd8..b6b8fdd 100644 --- a/src/storage/storage_backend_fs.c +++ b/src/storage/storage_backend_fs.c @@ -48,7 +48,7 @@ #define VIR_FROM_THIS VIR_FROM_STORAGE -static int +static int ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) virStorageBackendProbeTarget(virStorageVolTargetPtr target, char **backingStore, int *backingStoreFormat, @@ -59,10 +59,8 @@ virStorageBackendProbeTarget(virStorageVolTargetPtr target, int fd, ret; virStorageFileMetadata meta; - if (backingStore) - *backingStore = NULL; - if (backingStoreFormat) - *backingStoreFormat = VIR_STORAGE_FILE_AUTO; + *backingStore = NULL; + *backingStoreFormat = VIR_STORAGE_FILE_AUTO; if (encryption) *encryption = NULL; @@ -75,7 +73,7 @@ virStorageBackendProbeTarget(virStorageVolTargetPtr target, allocation, capacity)) < 0) { close(fd); - return -1; + return ret; } memset(&meta, 0, sizeof(meta)); @@ -95,20 +93,19 @@ virStorageBackendProbeTarget(virStorageVolTargetPtr target, close(fd); if (meta.backingStore) { - if (backingStore) { - *backingStore = meta.backingStore; - meta.backingStore = NULL; - if (meta.backingStoreFormat == VIR_STORAGE_FILE_AUTO) { - if ((*backingStoreFormat = virStorageFileProbeFormat(*backingStore)) < 0) { - close(fd); - goto cleanup; - } - } else { - *backingStoreFormat = meta.backingStoreFormat; + *backingStore = meta.backingStore; + meta.backingStore = NULL; + if (meta.backingStoreFormat == VIR_STORAGE_FILE_AUTO) { + if ((*backingStoreFormat + = virStorageFileProbeFormat(*backingStore)) < 0) { + close(fd); + goto cleanup; } } else { - VIR_FREE(meta.backingStore); + *backingStoreFormat = meta.backingStoreFormat; } + } else { + VIR_FREE(meta.backingStore); } if (capacity && meta.capacity) @@ -139,8 +136,7 @@ virStorageBackendProbeTarget(virStorageVolTargetPtr target, return 0; cleanup: - if (backingStore) - VIR_FREE(*backingStore); + VIR_FREE(*backingStore); return -1; } -- 1.7.2

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[libvirt] [PATCH] network: kill dead store
by Eric Blake 30 Jul '10

30 Jul '10

* src/network/bridge_driver.c (networkDefine): Kill dead store. --- src/network/bridge_driver.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index b7ee880..217cdcc 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -1490,14 +1490,13 @@ static virNetworkPtr networkDefine(virConnectPtr conn, const char *xml) { virNetworkDefPtr def; virNetworkObjPtr network = NULL; virNetworkPtr ret = NULL; - int dupNet; networkDriverLock(driver); if (!(def = virNetworkDefParseString(xml))) goto cleanup; - if ((dupNet = virNetworkObjIsDuplicate(&driver->networks, def, 0)) < 0) + if (virNetworkObjIsDuplicate(&driver->networks, def, 0) < 0) goto cleanup; if (virNetworkSetBridgeName(&driver->networks, def, 1)) -- 1.7.2

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[libvirt] [PATCH] xenapi: Update ID after starting a domain
by Matthias Bolte 30 Jul '10

30 Jul '10

--- src/xenapi/xenapi_driver.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c index e385648..2262cef 100644 --- a/src/xenapi/xenapi_driver.c +++ b/src/xenapi/xenapi_driver.c @@ -1459,6 +1459,7 @@ xenapiDomainCreateWithFlags (virDomainPtr dom, unsigned int flags) xen_vm_set *vms; xen_vm vm; xen_session *session = ((struct _xenapiPrivate *)(dom->conn->privateData))->session; + int64_t domid = -1; virCheckFlags(0, -1); @@ -1475,6 +1476,10 @@ xenapiDomainCreateWithFlags (virDomainPtr dom, unsigned int flags) xen_vm_set_free(vms); return -1; } + + xen_vm_get_domid(session, &domid, vm); + dom->id = domid; + xen_vm_set_free(vms); } else { if (vms) xen_vm_set_free(vms); -- 1.7.0.4

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[libvirt] [PATCH] esx: Update ID after starting a domain
by Matthias Bolte 30 Jul '10

30 Jul '10

--- src/esx/esx_driver.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c index eb64556..964a3a5 100644 --- a/src/esx/esx_driver.c +++ b/src/esx/esx_driver.c @@ -2483,6 +2483,7 @@ esxDomainCreateWithFlags(virDomainPtr domain, unsigned int flags) esxVI_ObjectContent *virtualMachine = NULL; esxVI_String *propertyNameList = NULL; esxVI_VirtualMachinePowerState powerState; + int id = -1; esxVI_ManagedObjectReference *task = NULL; esxVI_TaskInfoState taskInfoState; @@ -2497,8 +2498,8 @@ esxDomainCreateWithFlags(virDomainPtr domain, unsigned int flags) esxVI_LookupVirtualMachineByUuidAndPrepareForTask (priv->primary, domain->uuid, propertyNameList, &virtualMachine, priv->autoAnswer) < 0 || - esxVI_GetVirtualMachinePowerState(virtualMachine, - &powerState) < 0) { + esxVI_GetVirtualMachinePowerState(virtualMachine, &powerState) < 0 || + esxVI_GetVirtualMachineIdentity(virtualMachine, &id, NULL, NULL) < 0) { goto cleanup; } @@ -2521,6 +2522,7 @@ esxDomainCreateWithFlags(virDomainPtr domain, unsigned int flags) goto cleanup; } + domain->id = id; result = 0; cleanup: -- 1.7.0.4

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