January 2016 - Devel - libvirt List Archives

[libvirt] [PATCH 0/4] vz: rework domain creation
by Mikhail Feoktistov 25 Jan '16

25 Jan '16

Patch 1 and 2: Fix race condition when adding domain to domains list Race condition: User calls defineXML to create new instance. The main thread from vzDomainDefineXMLFlags() creates new instance by prlsdkCreateVm. Then this thread calls prlsdkAddDomain to add new domain to domains list. The second thread receives notification from hypervisor that new VM was created. It calls prlsdkHandleVmAddedEvent() and also tries to add new domain to domains list. These two threads call virDomainObjListFindByUUID() from prlsdkAddDomain() and don't find new domain. So they add two domains with the same uuid to domains list. This fix splits logic of prlsdkAddDomain() into two new functions. 1. prlsdkNewDomain() creates new empty domain in domains list with the specific uuid. 2. prlsdkSetDomainInstance() add data from VM to domain object. Patch 3 fixes notification subscription. To get domain info we should receive and handle notification from hypervisor. Mikhail Feoktistov (4): vz: Split logic of prlsdkAddDomain() into two functions vz: Remove prlsdkAddDomain() and use new functions vz: remove code duplication from LoadDomain() vz: fix notification subscription src/vz/vz_driver.c | 14 ++++- src/vz/vz_sdk.c | 156 ++++++++++++++++++++++++++++++----------------------- src/vz/vz_sdk.h | 8 ++- 3 files changed, 107 insertions(+), 71 deletions(-) -- 1.8.3.1

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[libvirt] [PATCH v2 1/2] conf: expose virDomainBootType(From|To)String
by Roman Bogorodskiy 24 Jan '16

24 Jan '16

These functions are going to be used by the Bhyve driver. --- src/libvirt_private.syms | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 1e51dcf..50f0b3f 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -152,6 +152,8 @@ virDiskNameToIndex; virDomainActualNetDefFree; virDomainBlockedReasonTypeFromString; virDomainBlockedReasonTypeToString; +virDomainBootTypeFromString; +virDomainBootTypeToString; virDomainCapabilitiesPolicyTypeToString; virDomainCapsFeatureTypeToString; virDomainChrConsoleTargetTypeFromString; -- 2.4.6

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[libvirt] [PATCH v2] vmx: Adapt to emptyBackingString for cdrom-image
by Michal Privoznik 24 Jan '16

24 Jan '16

https://bugzilla.redhat.com/show_bug.cgi?id=1266088 We are missing this value for cdrom-image device. Honestly, I have no idea whether it can happen for other disk devices too. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- diff to v1: -extened support for scsi CDROM too -added formatting code -added couple of tests src/vmx/vmx.c | 38 +++++++++++++++++++++----- tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.vmx | 5 ++++ tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.xml | 23 ++++++++++++++++ tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.vmx | 6 ++++ tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.xml | 23 ++++++++++++++++ tests/vmx2xmltest.c | 3 ++ tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.vmx | 13 +++++++++ tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.xml | 13 +++++++++ tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.vmx | 14 ++++++++++ tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.xml | 13 +++++++++ tests/xml2vmxtest.c | 2 ++ 11 files changed, 146 insertions(+), 7 deletions(-) create mode 100644 tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.vmx create mode 100644 tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.xml create mode 100644 tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.vmx create mode 100644 tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.xml create mode 100644 tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.vmx create mode 100644 tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.xml create mode 100644 tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.vmx create mode 100644 tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.xml diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c index d1cdad3..10fec74 100644 --- a/src/vmx/vmx.c +++ b/src/vmx/vmx.c @@ -2246,6 +2246,16 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con * call to this function to parse a CDROM device may handle it. */ goto ignore; + } else if (STREQ(fileName, "emptyBackingString")) { + if (deviceType && STRCASENEQ(deviceType, "cdrom-image")) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Expecting VMX entry '%s' to be 'cdrom-image' " + "but found '%s'"), deviceType_name, deviceType); + goto cleanup; + } + + virDomainDiskSetType(*def, VIR_STORAGE_TYPE_FILE); + ignore_value(virDomainDiskSetSource(*def, NULL)); } else { virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid or not yet handled value '%s' " @@ -2319,6 +2329,16 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con */ goto ignore; } + } else if (STREQ(fileName, "emptyBackingString")) { + if (deviceType && STRCASENEQ(deviceType, "cdrom-image")) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Expecting VMX entry '%s' to be 'cdrom-image' " + "but found '%s'"), deviceType_name, deviceType); + goto cleanup; + } + + virDomainDiskSetType(*def, VIR_STORAGE_TYPE_FILE); + ignore_value(virDomainDiskSetSource(*def, NULL)); } else { virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid or not yet handled value '%s' " @@ -3526,15 +3546,19 @@ virVMXFormatDisk(virVMXContext *ctx, virDomainDiskDefPtr def, if (type == VIR_STORAGE_TYPE_FILE) { const char *src = virDomainDiskGetSource(def); - if (src && ! virFileHasSuffix(src, fileExt)) { - virReportError(VIR_ERR_INTERNAL_ERROR, - _("Image file for %s %s '%s' has " - "unsupported suffix, expecting '%s'"), - busType, deviceType, def->dst, fileExt); + if (src) { + if (!virFileHasSuffix(src, fileExt)) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Image file for %s %s '%s' has " + "unsupported suffix, expecting '%s'"), + busType, deviceType, def->dst, fileExt); return -1; - } + } - fileName = ctx->formatFileName(src, ctx->opaque); + fileName = ctx->formatFileName(src, ctx->opaque); + } else { + ignore_value(VIR_STRDUP(fileName, "emptyBackingString")); + } if (fileName == NULL) return -1; diff --git a/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.vmx b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.vmx new file mode 100644 index 0000000..62fdb3d --- /dev/null +++ b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.vmx @@ -0,0 +1,5 @@ +config.version = "8" +virtualHW.version = "4" +ide0:0.present = "true" +ide0:0.deviceType = "cdrom-image" +ide0:0.fileName = "emptyBackingString" diff --git a/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.xml b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.xml new file mode 100644 index 0000000..232200b --- /dev/null +++ b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty.xml @@ -0,0 +1,23 @@ +<domain type='vmware'> + <uuid>00000000-0000-0000-0000-000000000000</uuid> + <memory unit='KiB'>32768</memory> + <currentMemory unit='KiB'>32768</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686'>hvm</type> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <disk type='file' device='disk'> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='ide' index='0'/> + <video> + <model type='vmvga' vram='4096'/> + </video> + </devices> +</domain> diff --git a/tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.vmx b/tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.vmx new file mode 100644 index 0000000..3c6036a --- /dev/null +++ b/tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.vmx @@ -0,0 +1,6 @@ +config.version = "8" +virtualHW.version = "4" +scsi0.present = "true" +scsi0:0.present = "true" +scsi0:0.deviceType = "cdrom-image" +scsi0:0.fileName = "emptyBackingString" diff --git a/tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.xml b/tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.xml new file mode 100644 index 0000000..f2e4c75 --- /dev/null +++ b/tests/vmx2xmldata/vmx2xml-cdrom-scsi-empty.xml @@ -0,0 +1,23 @@ +<domain type='vmware'> + <uuid>00000000-0000-0000-0000-000000000000</uuid> + <memory unit='KiB'>32768</memory> + <currentMemory unit='KiB'>32768</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686'>hvm</type> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <disk type='file' device='disk'> + <target dev='sda' bus='scsi'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='scsi' index='0'/> + <video> + <model type='vmvga' vram='4096'/> + </video> + </devices> +</domain> diff --git a/tests/vmx2xmltest.c b/tests/vmx2xmltest.c index 0bbf055..a22af75 100644 --- a/tests/vmx2xmltest.c +++ b/tests/vmx2xmltest.c @@ -219,14 +219,17 @@ mymain(void) DO_TEST("harddisk-transient", "harddisk-transient"); DO_TEST("cdrom-scsi-file", "cdrom-scsi-file"); + DO_TEST("cdrom-scsi-empty", "cdrom-scsi-empty"); DO_TEST("cdrom-scsi-device", "cdrom-scsi-device"); DO_TEST("cdrom-scsi-raw-device", "cdrom-scsi-raw-device"); DO_TEST("cdrom-scsi-raw-auto-detect", "cdrom-scsi-raw-auto-detect"); DO_TEST("cdrom-scsi-passthru", "cdrom-scsi-passthru"); DO_TEST("cdrom-ide-file", "cdrom-ide-file"); + DO_TEST("cdrom-ide-empty", "cdrom-ide-empty"); DO_TEST("cdrom-ide-device", "cdrom-ide-device"); DO_TEST("cdrom-ide-raw-device", "cdrom-ide-raw-device"); DO_TEST("cdrom-ide-raw-auto-detect", "cdrom-ide-raw-auto-detect"); + DO_TEST("cdrom-ide-raw-auto-detect", "cdrom-ide-raw-auto-detect"); DO_TEST("floppy-file", "floppy-file"); DO_TEST("floppy-device", "floppy-device"); diff --git a/tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.vmx b/tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.vmx new file mode 100644 index 0000000..45c7950 --- /dev/null +++ b/tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.vmx @@ -0,0 +1,13 @@ +.encoding = "UTF-8" +config.version = "8" +virtualHW.version = "4" +guestOS = "other" +uuid.bios = "56 4d 9b ef ac d9 b4 e0-c8 f0 ae a8 b9 10 35 15" +displayName = "cdrom-ide-file" +memsize = "4" +numvcpus = "1" +ide0:0.present = "true" +ide0:0.deviceType = "cdrom-image" +ide0:0.fileName = "emptyBackingString" +floppy0.present = "false" +floppy1.present = "false" diff --git a/tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.xml b/tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.xml new file mode 100644 index 0000000..219603e --- /dev/null +++ b/tests/xml2vmxdata/xml2vmx-cdrom-ide-empty.xml @@ -0,0 +1,13 @@ +<domain type='vmware'> + <name>cdrom-ide-file</name> + <uuid>564d9bef-acd9-b4e0-c8f0-aea8b9103515</uuid> + <memory unit='KiB'>4096</memory> + <os> + <type>hvm</type> + </os> + <devices> + <disk type='file' device='cdrom'> + <target dev='hda' bus='ide'/> + </disk> + </devices> +</domain> diff --git a/tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.vmx b/tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.vmx new file mode 100644 index 0000000..1097cb1 --- /dev/null +++ b/tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.vmx @@ -0,0 +1,14 @@ +.encoding = "UTF-8" +config.version = "8" +virtualHW.version = "4" +guestOS = "other" +uuid.bios = "56 4d 9b ef ac d9 b4 e0-c8 f0 ae a8 b9 10 35 15" +displayName = "cdrom-scsi-empty" +memsize = "4" +numvcpus = "1" +scsi0.present = "true" +scsi0:0.present = "true" +scsi0:0.deviceType = "cdrom-image" +scsi0:0.fileName = "emptyBackingString" +floppy0.present = "false" +floppy1.present = "false" diff --git a/tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.xml b/tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.xml new file mode 100644 index 0000000..a5a6d80 --- /dev/null +++ b/tests/xml2vmxdata/xml2vmx-cdrom-scsi-empty.xml @@ -0,0 +1,13 @@ +<domain type='vmware'> + <name>cdrom-scsi-empty</name> + <uuid>564d9bef-acd9-b4e0-c8f0-aea8b9103515</uuid> + <memory unit='KiB'>4096</memory> + <os> + <type>hvm</type> + </os> + <devices> + <disk type='file' device='cdrom'> + <target dev='sda' bus='scsi'/> + </disk> + </devices> +</domain> diff --git a/tests/xml2vmxtest.c b/tests/xml2vmxtest.c index 32bad5f..d970240 100644 --- a/tests/xml2vmxtest.c +++ b/tests/xml2vmxtest.c @@ -235,11 +235,13 @@ mymain(void) DO_TEST("harddisk-ide-file", "harddisk-ide-file", 4); DO_TEST("cdrom-scsi-file", "cdrom-scsi-file", 4); + DO_TEST("cdrom-scsi-empty", "cdrom-scsi-empty", 4); DO_TEST("cdrom-scsi-device", "cdrom-scsi-device", 4); DO_TEST("cdrom-scsi-raw-device", "cdrom-scsi-raw-device", 4); DO_TEST("cdrom-scsi-raw-auto-detect", "cdrom-scsi-raw-auto-detect", 4); DO_TEST("cdrom-scsi-passthru", "cdrom-scsi-passthru", 4); DO_TEST("cdrom-ide-file", "cdrom-ide-file", 4); + DO_TEST("cdrom-ide-empty", "cdrom-ide-empty", 4); DO_TEST("cdrom-ide-device", "cdrom-ide-device", 4); DO_TEST("cdrom-ide-raw-device", "cdrom-ide-raw-device", 4); DO_TEST("cdrom-ide-raw-auto-detect", "cdrom-ide-raw-auto-detect", 4); -- 2.4.10

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[libvirt] [PATCH v4] libvirtd: Increase NL buffer size for lots of interface
by Leno Hou 23 Jan '16

23 Jan '16

1. When switching CPUs to offline/online in a system more than 128 cpus 2. When using virsh to destroy domain in a system with more interface All of above happens nl_recv returned with error: No buffer space available. This patch sets the socket buffer size to 128K and turns on message peeking on new function virNetlinkAlloc,as this would solve this problem totally and permanetly. Signed-off-by: Leno Hou <houqy(a)linux.vnet.ibm.com> Cc: Wenyi Gao <wenyi(a)linux.vnet.ibm.com> CC: Laine Stump <laine(a)laine.org> CC: Michal Privoznik <mprivozn(a)redhat.com> --- src/util/virnetlink.c | 42 ++++++++++++++++++++++++++++++++++++++---- src/util/virnetlink.h | 7 +++++++ 2 files changed, 45 insertions(+), 4 deletions(-) diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c index 679b48e..02f5215 100644 --- a/src/util/virnetlink.c +++ b/src/util/virnetlink.c @@ -64,13 +64,11 @@ struct virNetlinkEventHandle { }; # ifdef HAVE_LIBNL1 -# define virNetlinkAlloc nl_handle_alloc +# define virSocketSetBufferSize nl_set_buffer_size # define virNetlinkFree nl_handle_destroy -typedef struct nl_handle virNetlinkHandle; # else -# define virNetlinkAlloc nl_socket_alloc +# define virSocketSetBufferSize nl_socket_set_buffer_size # define virNetlinkFree nl_socket_free -typedef struct nl_sock virNetlinkHandle; # endif typedef struct _virNetlinkEventSrvPrivate virNetlinkEventSrvPrivate; @@ -108,6 +106,42 @@ static virNetlinkHandle *placeholder_nlhandle; /* Function definitions */ /** + * virNetlinkAlloc + * + * Perform netlink allocation which was defined differently for libnl3 + * vs libnl-1, and did all of three in one function + * 1) create socket + * 2) set larger buffer size + * 3) turn on message peeking + * + * see the following email message: + * https://www.redhat.com/archives/libvir-list/2016-January/msg00536.html + * + * Returns virNetlinkHandle + */ +virNetlinkHandle *virNetlinkAlloc(void) +{ + virNetlinkHandle *netlinknh; + #ifdef HAVE_LIBNL1 + netlinknh = nl_handle_alloc(); + #else + netlinknh = nl_socket_alloc(); + #endif + + if (virSocketSetBufferSize(netlinknh,131702,0) >= 0) { + nl_socket_enable_msg_peek(netlinknh); + return netlinknh; + } + + virReportSystemError(errno, + "%s",_("can not set socket buffer size to 128k")); + + virNetlinkFree(netlinknh); + + return NULL; +} + +/** * virNetlinkStartup: * * Perform any initialization that needs to take place before the diff --git a/src/util/virnetlink.h b/src/util/virnetlink.h index 0664a7a..b4a2010 100644 --- a/src/util/virnetlink.h +++ b/src/util/virnetlink.h @@ -44,6 +44,13 @@ struct nlmsghdr; # endif /* __linux__ */ +# ifdef HAVE_LIBNL1 +typedef struct nl_handle virNetlinkHandle; +# else +typedef struct nl_sock virNetlinkHandle; +# endif +virNetlinkHandle *virNetlinkAlloc(void); + int virNetlinkStartup(void); void virNetlinkShutdown(void); -- 1.9.1

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Re: [libvirt] Accessing libvirtd remotely as non-root user
by Warren Usui 23 Jan '16

23 Jan '16

I joined this mailing list after I googled and found this thread. https://www.redhat.com/archives/libvir-list/2015-June/msg00583.html Part of this thread read: >So, further digging led me to [2], which in essence was the section of the libvirtd wiki page that the page claimed >was obsolete. Creating the .pkla authorization file finally enabled non-root privileged user management of a remote > >KVM host. I was having this same problem, and I believe that what was needed was just the last usermod that added the non-root user to the libvirt group. I did just that one line and things seemed to be much happier.

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Re: [libvirt] [PATCH 1/2] logical: Use correct syntax for thin/sparse pool creation
by Joe Harvell 22 Jan '16

22 Jan '16

John/Jan: I actually made a patch similar to this and was about to submit it for review. Now I see there is a more thorough version here already submitted just over a year ago. I don't see any evidence of this in the git repo. Are there any plans to commit it? --- Joe Harvell

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[libvirt] [PATCH 0/7] PCI hostdev refactoring
by Andrea Bolognani 22 Jan '16

22 Jan '16

This series is part of my ongoing quest to fix Bug 1272300[1]. I had previously posted a mostly complete solution[2], which did however fail to handle devices detached / reattached using virsh's nodedev-* commands. Part of that series has already been merged. This series refactors the PCI hostdev code so that all detach / reattach operations go through a single function, which means that once the previous code is reimplemented on top of it, all cases will be handled correctly. One problem with the previous code is that bookkeeping was performed all over the place, making it very easy to introduce subtle bugs. After this refactoring it's hopefully easier to follow along. Despite this being a refactoring, it introduces some changes in behaviour. These changes do, in fact, improve consistency, and should not cause any issue AFAICT, but they're still worth mentioning and thinking over. Basically, every time a device is detached from the host, its original status will be restored once it's reattached, which means that if it was not bound to any driver when 'virsh nodedev-detach' is called, it will not be bound to any driver after 'virsh nodedev-reattach' is called. This is the same thing that used to happen, and still happens, when such a managed PCI hostdev is attached and then detached from a guest. One more thing worth mentioning is that the code now relies heavily on libvirt's internal state, ie. the list of active and inactive PCI hostdevs. These lists do not currently survive daemon restarts, so the series is unfit for merge until that detail is sorted out. It's unclear to me how I could go about that, any suggestion? Cheers. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1272300 [2] https://www.redhat.com/archives/libvir-list/2015-December/msg00070.html Andrea Bolognani (7): hostdev: Add reattachPCIDevices() hostdev: Use common reattach code to rollback prepare errors hostdev: Use common reattach code in virHostdevPCINodeDeviceReAttach() hostdev: Add detachPCIDevices() hostdev: Use common detach code in virHostdevPCINodeDeviceDetach() pci: Phase out virPCIDeviceReattachInit() pci: Add debug messages when unbinding from stub driver src/libvirt_private.syms | 1 - src/util/virhostdev.c | 389 +++++++++++++++++++++++++++++------------------ src/util/virpci.c | 30 ++-- src/util/virpci.h | 1 - tests/virpcitest.c | 5 +- 5 files changed, 267 insertions(+), 159 deletions(-) -- 2.5.0

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[libvirt] [PATCH 0/2] macvtap/802.1Qbh fixes
by Laine Stump 22 Jan '16

22 Jan '16

The first patch generally improves performance when creating a lot of macvtap devices. It was inspired by Tony Krowiak's email back in November. The 2nd patch eliminates a bogus error when destroying a macvtap passthrough device that is using 802.1Qbh. Laine Stump (2): util: keep/use a bitmap of in-use macvtap devices util: reset MAC address of macvtap passthrough physdev after disassociate src/libvirt_private.syms | 2 + src/qemu/qemu_process.c | 10 +- src/util/virnetdevmacvlan.c | 454 +++++++++++++++++++++++++++++++++++++------- src/util/virnetdevmacvlan.h | 5 +- 4 files changed, 398 insertions(+), 73 deletions(-) -- 2.5.0

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[libvirt] [PATCH v2 00/15] Implement post-copy migration
by Jiri Denemark 22 Jan '16

22 Jan '16

(See "Add public APIs for post-copy migration" patch for more details about post-copy migration.) Post-copy support was originally written by Cristian Klein in 2014, but no one touched the series since then. Some patches in this series are modified versions of the old patches from Cristian, some patches had to be rewritten from scratch since libvirt code changed a lot (we started using migration events), and some patches are completely new. While post-copy migration is included in QEMU 2.5.0, it didn't support everything libvirt needs. Thus you need QEMU from git to use post-copy. Luckily, the QEMU migration capability we need to enable to use post-copy is still prefixed with "x-", which means it's still considered experimental. Once we are sure QEMU gives us all we need, the "x-" prefix will be removed. Seamless SPICE migration doesn't work with post-copy now, but I'll look at that. Fetching statistics of a completed post-copy migration does not work either (libvirt would report incorrect data). This series (VIR_MIGRATE_POSTCOPY_AFTER_PRECOPY support) depends on "Introduce migration iteration event" series I sent yesterday. Version 2: - VIR_MIGRATE_POSTCOPY_AFTER_PRECOPY flag dropped - --postcopy-after-precopy implemented entirely in virsh Cristian Klein (6): Add public APIs for post-copy migration qemu: Add QMP functions for post-copy migration qemu: Add support for VIR_MIGRATE_POSTCOPY flag qemu: Implement virDomainMigrateStartPostCopy virsh: Add support for post-copy migration virsh: Add --postcopy-after-precopy option to migrate Jiri Denemark (9): Add event and state details for post-copy qemu: Don't explicitly stop CPUs after migration qemu: Handle postcopy-active migration state virsh: Configurable migrate --timeout action qemu: Don't kill running migrated domain on daemon restart qemu: Refactor qemuProcessRecoverMigration qemu: Handle post-copy migration failures qemu: Refuse to abort migration in post-copy mode qemu: Add flags to qemuMigrationWaitForCompletion examples/object-events/event-test.c | 9 ++ include/libvirt/libvirt-domain.h | 11 ++ src/conf/domain_conf.c | 7 +- src/driver-hypervisor.h | 5 + src/libvirt-domain.c | 114 +++++++++++++++ src/libvirt_public.syms | 4 + src/qemu/qemu_domain.c | 1 + src/qemu/qemu_domain.h | 3 + src/qemu/qemu_driver.c | 72 ++++++++- src/qemu/qemu_migration.c | 283 ++++++++++++++++++++++++++++++------ src/qemu/qemu_migration.h | 6 +- src/qemu/qemu_monitor.c | 16 +- src/qemu/qemu_monitor.h | 4 + src/qemu/qemu_monitor_json.c | 23 +++ src/qemu/qemu_monitor_json.h | 3 + src/qemu/qemu_process.c | 249 +++++++++++++++++++------------ src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 13 +- src/remote_protocol-structs | 5 + tools/virsh-domain-monitor.c | 7 +- tools/virsh-domain.c | 158 ++++++++++++++++++-- tools/virsh.pod | 31 +++- 22 files changed, 865 insertions(+), 160 deletions(-) -- 2.7.0

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[libvirt] rbd: Add support for wiping and cloning images to storage driver
by Wido den Hollander 22 Jan '16

22 Jan '16

These two patches add support for buildVolFrom and wipeVol to the RBD storage driver. Wiping is done by discarding all blocks on the RBD image. Building a volume from a original is done leveraging the cloning mechanism RBD already supports.

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