January 2013 - Devel - libvirt List Archives

[libvirt] Fwd: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for OpenstackCinder like Sheepdog volumes
by harryxiyou 19 Jan '13

19 Jan '13

---------- Forwarded message ---------- From: harryxiyou <harryxiyou(a)gmail.com> Date: Sat, Jan 19, 2013 at 11:49 AM Subject: Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for OpenstackCinder like Sheepdog volumes To: 张家龙 <zhangjl(a)awcloud.com> Cc: Kazutaka Morita <morita.kazutaka(a)gmail.com>, openstack-dev(a)lists.launchpad.org, Liu Yuan <namei.unix(a)gmail.com>, sheepdog <sheepdog(a)lists.wpkg.org>, openstack <openstack(a)lists.launchpad.net>, Kang Hua <kanghua151(a)gmail.com> On Sat, Jan 19, 2013 at 10:57 AM, 张家龙 <zhangjl(a)awcloud.com> wrote: > Maybe，you need to modify the nova/virt/libvirt.xml.template.In our tesing of > nova and sheepdog, Hi Zhang jia long, What are the functions of libvirt.xml.template? Currently, we just wanna to add a new block driver(a new one as the same as sheepdog driver) to Openstack Cinder ;-) The performances will be enhenced later. > [...] > Hi Morita and other developers, > > If i add a QEMU/Libvirt driver(the same as Sheepdog volumes driver in > Openstack Cinder branch) to let Openstack Cinder support a new block-level > storage system, I should change following stuffs, right? > > 1, Add a driver file to the dir in Openstack Cinder branch(the same as > sheepdog.py), > https://github.com/openstack/cinder/blob/master/cinder/volume/drivers > 2, Change the file in Openstack Nova branch(Let libvirt attach HLFS volumes > to QEMU, the same as sheepdog)， > > https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py > > Do I should change/add any other files for Openstack? Cloud anyone give me > some suggestions? Thanks in advance ;-) > Hi Openstack developers, libvirt developers and Sheepdog developers, I also have following questions, please give me some suggestions. Thanks in advance ;-) 1, The libvirt codes in Nova branch are just interfaces which call the standard Libvirt library, right? (Or the libvirt codes in Nova branch are the standard Libvirt library.) 2, If i add a new block storage driver for Openstack by QEMU/Libvirt way, should i also modify standard libvirt library and QEMU source codes to let them support this new driver so that i can use this new driver to let libvirt attach the new driver volumes to QEMU in Openstack? 3, Certainly, i should also do following stuffs. a, Add a driver file to the dir in Openstack Cinder branch(the same as sheepdog.py), https://github.com/openstack/cinder/blob/master/cinder/volume/drivers b, Change the file in Openstack Nova branch(Let libvirt attach the new driver volumes to QEMU, the same as sheepdog)， https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py 4, Should i have to do any other stuffs? -- Thanks Harry Wei -- Thanks Harry Wei

1 0

[libvirt] [PATCH] Fix race condition when destroying guests
by Daniel P. Berrange 19 Jan '13

19 Jan '13

From: "Daniel P. Berrange" <berrange(a)redhat.com> When running virDomainDestroy, we need to make sure that no other background thread cleans up the domain while we're doing our work. This can happen if we release the domain object while in the middle of work, because the monitor might detect EOF in this window. For this reason we have a 'beingDestroyed' flag to stop the monitor from doing its normal cleanup. Unfortunately this flag was only being used to protect qemuDomainBeginJob, and not qemuProcessKill This left open a race condition where either libvirtd could crash, or alternatively report bogus error messages about the domain already having been destroyed to the caller Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com> --- src/qemu/qemu_driver.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index c28c223..2a6f381 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -2121,24 +2121,29 @@ qemuDomainDestroyFlags(virDomainPtr dom, qemuDomainSetFakeReboot(driver, vm, false); + + /* We need to prevent monitor EOF callback from doing our work (and sending + * misleading events) while the vm is unlocked inside BeginJob/ProcessKill API + */ + priv->beingDestroyed = true; + /* Although qemuProcessStop does this already, there may * be an outstanding job active. We want to make sure we * can kill the process even if a job is active. Killing * it now means the job will be released */ if (flags & VIR_DOMAIN_DESTROY_GRACEFUL) { - if (qemuProcessKill(driver, vm, 0) < 0) + if (qemuProcessKill(driver, vm, 0) < 0) { + priv->beingDestroyed = false; goto cleanup; + } } else { - if (qemuProcessKill(driver, vm, VIR_QEMU_PROCESS_KILL_FORCE) < 0) + if (qemuProcessKill(driver, vm, VIR_QEMU_PROCESS_KILL_FORCE) < 0) { + priv->beingDestroyed = false; goto cleanup; + } } - /* We need to prevent monitor EOF callback from doing our work (and sending - * misleading events) while the vm is unlocked inside BeginJob API - */ - priv->beingDestroyed = true; - if (qemuDomainObjBeginJobWithDriver(driver, vm, QEMU_JOB_DESTROY) < 0) goto cleanup; -- 1.8.0.2

5 6

[libvirt] RFC: libxl race fixes
by Jim Fehlig 18 Jan '13

18 Jan '13

I've been investigating some races in the libxl driver and would like to get comments on some potential solutions. The first race is in the fd/timeout event handling code, which maps libxl's osevent interface to libvirt's event loop interface. This mapping opens the possibility for libvirt's event loop to invoke event callbacks after libxl has already deregistered the event, potentially accessing an event object that has already been freed. One solution to this race I've found successful is reference counting the objects associated with the events. When libxl registers an event, an object encapsulating the event is created and it's reference count is set to 1. When the event is injected into libvirt's event loop, another reference is taken on the object. When libxl deregisters the event, it's reference count is decremented. Once the event is removed from libvirt's event loop, the final reference is decremented and the object is disposed. This approach ensures the object is not disposed until it is removed from libvirt's event loop *and* libxl had explicitly deregistered the event. The notion of an event being 'disabled' found in libvirt's event loop impl also had to be added to the libxl event object, to ensure the driver doesn't call into libxl for a previously deregistered event. The second race is between destroying a vm (i.e., calling privateDataFreeFunc, which frees the libxl ctx) and deregistration/cleanup of all events that have been registered by libxl. One solution for this race is to convert libxlDomainObjPrivate to a virObject and increment its reference for each fd and timeout registration. Only when all fds and timeouts are deregistered and destroyed will the libxlDomainObjPrivate be destroyed. One downside to this approach is that an API to "cleanup" the libxl ctx is needed. Without such an API, some fds are not deregistered until calling libxl_ctx_free. But since the fd events have references on the libxlDomainObjPrivate, libxl_ctx_free is never called. (BTW I have a patch adding libxl_ctx_quiesce() to libxl, which upstream xen folks seem receptive to, including backporting to Xen 4.2 branch, but I don't think this is ideal.) An alternate solution that can be used to address both of these races is to maintain a list of the fd/timeout registrations in the libxlDomainObjPrivate object, and take a more brute force approach to managing the registrations Other solutions that I might be overlooking are certainly appreciated :). Regards, Jim

2 3

[libvirt] [PATCH] qemu: Support ram bar size for qxl devices
by Alon Levy 18 Jan '13

18 Jan '13

Adds a qxl-ram attribute globaly to the video.model element, that changes the resulting qemu command line only if video.type == "qxl". That attribute gets a default value of 64*1024 only if model.type is "qxl". In effect not changing any xml or argv for non qxl devices. For qxl devices a new property is set: -global qxl-vga.ram_size=<ram>*1024 or -global qxl.ram_size=<ram>*1024 For the main and secondary qxl devices respectively. The default for the qxl ram bar is the same as the default for the qxl vram bar, 64*1024. --- I've added a qxl-ram attribute. There is no precedent for adding am attribute prefixed like this, so I'm open for any other suggestion on how to do it. docs/schemas/domaincommon.rng | 9 +++- src/conf/domain_conf.c | 19 ++++++- src/conf/domain_conf.h | 1 + src/qemu/qemu_command.c | 58 ++++++++++++++++++---- .../qemuxml2argv-graphics-spice-compression.args | 2 +- .../qemuxml2argv-graphics-spice-compression.xml | 4 +- .../qemuxml2argv-graphics-spice-qxl-vga.args | 2 +- .../qemuxml2argv-graphics-spice-qxl-vga.xml | 4 +- .../qemuxml2argv-graphics-spice.args | 2 +- .../qemuxml2argv-graphics-spice.xml | 4 +- .../qemuxml2argv-video-device-pciaddr-default.args | 6 +-- 11 files changed, 86 insertions(+), 25 deletions(-) diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 67ae864..50fc834 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -2251,7 +2251,9 @@ </define>  <define name="video"> <element name="video"> @@ -2268,6 +2270,11 @@ </choice> </attribute> <optional> + <attribute name="qxl-ram"> + <ref name="unsignedInt"/> + </attribute> + </optional> + <optional> <attribute name="vram"> <ref name="unsignedInt"/> </attribute> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 13c14e9..a16f1b5 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -7391,6 +7391,7 @@ virDomainVideoDefParseXML(const xmlNodePtr node, char *type = NULL; char *heads = NULL; char *vram = NULL; + char *qxl_ram = NULL; char *primary = NULL; if (VIR_ALLOC(def) < 0) { @@ -7401,9 +7402,10 @@ virDomainVideoDefParseXML(const xmlNodePtr node, cur = node->children; while (cur != NULL) { if (cur->type == XML_ELEMENT_NODE) { - if (!type && !vram && !heads && + if (!type && !vram && !qxl_ram && !heads && xmlStrEqual(cur->name, BAD_CAST "model")) { type = virXMLPropString(cur, "type"); + qxl_ram = virXMLPropString(cur, "qxl-ram"); vram = virXMLPropString(cur, "vram"); heads = virXMLPropString(cur, "heads"); @@ -7431,6 +7433,18 @@ virDomainVideoDefParseXML(const xmlNodePtr node, } } + if (qxl_ram) { + if (virStrToLong_ui(qxl_ram, NULL, 10, &def->qxl_ram) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("cannot parse video qxl-ram '%s'"), qxl_ram); + goto error; + } + } else { + if (def->type == VIR_DOMAIN_VIDEO_TYPE_QXL) { + def->qxl_ram = virDomainVideoDefaultRAM(dom, def->type); + } + } + if (vram) { if (virStrToLong_ui(vram, NULL, 10, &def->vram) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, @@ -7455,6 +7469,7 @@ virDomainVideoDefParseXML(const xmlNodePtr node, goto error; VIR_FREE(type); + VIR_FREE(qxl_ram); VIR_FREE(vram); VIR_FREE(heads); @@ -13383,6 +13398,8 @@ virDomainVideoDefFormat(virBufferPtr buf, virBufferAddLit(buf, " <video>\n"); virBufferAsprintf(buf, " <model type='%s'", model); + if (def->qxl_ram && def->type == VIR_DOMAIN_VIDEO_TYPE_QXL) + virBufferAsprintf(buf, " qxl-ram='%u'", def->qxl_ram); if (def->vram) virBufferAsprintf(buf, " vram='%u'", def->vram); if (def->heads) diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index ce36003..9333d26 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1157,6 +1157,7 @@ struct _virDomainVideoAccelDef { struct _virDomainVideoDef { int type; + unsigned int qxl_ram; unsigned int vram; unsigned int heads; bool primary; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 981c692..05f656a 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -3563,6 +3563,15 @@ qemuBuildDeviceVideoStr(virDomainVideoDefPtr video, UINT_MAX / 1024); goto error; } + if (video->qxl_ram > (UINT_MAX / 1024)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("value for 'qxl-ram' must be less than '%u'"), + UINT_MAX / 1024); + goto error; + } + + /* QEMU accepts bytes for ram_size. */ + virBufferAsprintf(&buf, ",ram_size=%u", video->qxl_ram * 1024); /* QEMU accepts bytes for vram_size. */ virBufferAsprintf(&buf, ",vram_size=%u", video->vram * 1024); @@ -6569,23 +6578,48 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArgList(cmd, "-vga", vgastr, NULL); if (def->videos[0]->type == VIR_DOMAIN_VIDEO_TYPE_QXL) { - if (def->videos[0]->vram && + if ((def->videos[0]->vram || def->videos[0]->qxl_ram) && qemuCapsGet(caps, QEMU_CAPS_DEVICE)) { - if (def->videos[0]->vram > (UINT_MAX / 1024)) { + int qxl_ram = def->videos[0]->qxl_ram; + int vram = def->videos[0]->vram; + if (vram > (UINT_MAX / 1024)) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("value for 'vram' must be less than '%u'"), + _("value for 'vram' must be less than '%u'"), + UINT_MAX / 1024); + goto error; + } + if (qxl_ram > (UINT_MAX / 1024)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("value for 'qxl-ram' must be less than '%u'"), UINT_MAX / 1024); goto error; } - virCommandAddArg(cmd, "-global"); - - if (qemuCapsGet(caps, QEMU_CAPS_DEVICE_QXL_VGA)) - virCommandAddArgFormat(cmd, "qxl-vga.vram_size=%u", - def->videos[0]->vram * 1024); - else - virCommandAddArgFormat(cmd, "qxl.vram_size=%u", - def->videos[0]->vram * 1024); + if (qemuCapsGet(caps, QEMU_CAPS_DEVICE_QXL_VGA)) { + if (qxl_ram) { + virCommandAddArg(cmd, "-global"); + virCommandAddArgFormat(cmd, + "qxl-vga.ram_size=%u", + qxl_ram * 1024); + } + if (vram) { + virCommandAddArg(cmd, "-global"); + virCommandAddArgFormat(cmd, + "qxl-vga.vram_size=%u", + vram * 1024); + } + } else { + if (qxl_ram) { + virCommandAddArg(cmd, "-global"); + virCommandAddArgFormat(cmd, "qxl.ram_size=%u", + qxl_ram * 1024); + } + if (vram) { + virCommandAddArg(cmd, "-global"); + virCommandAddArgFormat(cmd, "qxl.vram_size=%u", + vram * 1024); + } + } } } } @@ -9247,6 +9281,8 @@ virDomainDefPtr qemuParseCommandLine(virCapsPtr caps, else vid->type = video; vid->vram = virDomainVideoDefaultRAM(def, vid->type); + vid->qxl_ram = vid->type == VIR_DOMAIN_VIDEO_TYPE_QXL ? + virDomainVideoDefaultRAM(def, vid->type) : 0; vid->heads = 1; if (VIR_REALLOC_N(def->videos, def->nvideos+1) < 0) { diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args index 5c5912b..2f537df 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.args @@ -5,5 +5,5 @@ unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -hda \ x509-dir=/etc/pki/libvirt-spice,\ image-compression=auto_glz,jpeg-wan-compression=auto,zlib-glz-wan-compression=auto,\ playback-compression=on,streaming-video=filter -vga \ -qxl -global qxl.vram_size=18874368 -device qxl,id=video1,vram_size=33554432,bus=pci.0,addr=0x4 \ +qxl -global qxl.ram_size=67108864 -global qxl.vram_size=18874368 -device qxl,id=video1,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x4 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.xml b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.xml index 52eb5b9..32e4cc8 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-compression.xml @@ -31,10 +31,10 @@ <streaming mode='filter'/> </graphics> <video> - <model type='qxl' vram='18432' heads='1'/> + <model type='qxl' qxl-ram='65536' vram='18432' heads='1'/> </video> <video> - <model type='qxl' vram='32768' heads='1'/> + <model type='qxl' qxl-ram='65536' vram='32768' heads='1'/> </video> <memballoon model='virtio'/> </devices> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.args b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.args index 3954c03..007dd3f 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.args @@ -3,5 +3,5 @@ LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=spice \ unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -hda \ /dev/HostVG/QEMUGuest1 -spice port=5903,tls-port=5904,addr=127.0.0.1,\ x509-dir=/etc/pki/libvirt-spice,tls-channel=main,plaintext-channel=inputs -vga \ -qxl -global qxl-vga.vram_size=33554432 -device qxl,id=video1,vram_size=67108864,bus=pci.0,addr=0x4 \ +qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=33554432 -device qxl,id=video1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x4 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.xml b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.xml index 49cb8cc..ab40c7b 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-qxl-vga.xml @@ -28,10 +28,10 @@ <channel name='inputs' mode='insecure'/> </graphics> <video> - <model type='qxl' vram='32768' heads='1'/> + <model type='qxl' qxl-ram='65536' vram='32768' heads='1'/> </video> <video> - <model type='qxl' vram='65536' heads='1'/> + <model type='qxl' qxl-ram='65536' vram='65536' heads='1'/> </video> <memballoon model='virtio'/> </devices> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.args b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.args index 854e723..030e1f2 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.args @@ -5,5 +5,5 @@ unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb -hda \ x509-dir=/etc/pki/libvirt-spice,tls-channel=default,tls-channel=main,plaintext-channel=inputs,\ image-compression=auto_glz,jpeg-wan-compression=auto,zlib-glz-wan-compression=auto,\ playback-compression=on,streaming-video=filter,disable-copy-paste -vga \ -qxl -global qxl.vram_size=18874368 -device qxl,id=video1,vram_size=33554432,bus=pci.0,addr=0x4 \ +qxl -global qxl.ram_size=67108864 -global qxl.vram_size=18874368 -device qxl,id=video1,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x4 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.xml b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.xml index d4939a4..b540915 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.xml @@ -34,10 +34,10 @@ <clipboard copypaste='no'/> </graphics> <video> - <model type='qxl' vram='18432' heads='1'/> + <model type='qxl' qxl-ram='65536' vram='18432' heads='1'/> </video> <video> - <model type='qxl' vram='32768' heads='1'/> + <model type='qxl' qxl-ram='65536' vram='32768' heads='1'/> </video> <memballoon model='virtio'/> </devices> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-video-device-pciaddr-default.args b/tests/qemuxml2argvdata/qemuxml2argv-video-device-pciaddr-default.args index 9ce852f..4abd7c2 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-video-device-pciaddr-default.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-video-device-pciaddr-default.args @@ -3,7 +3,7 @@ LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \ -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \ -usb \ -hda /var/lib/libvirt/images/QEMUGuest1 -vnc 127.0.0.1:-5900 \ --device qxl-vga,id=video0,vram_size=67108864,bus=pci.0,addr=0x3 \ --device qxl,id=video1,vram_size=67108864,bus=pci.0,addr=0x4 \ --device qxl,id=video2,vram_size=67108864,bus=pci.0,addr=0x5 \ +-device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x3 \ +-device qxl,id=video1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x4 \ +-device qxl,id=video2,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x5 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 -- 1.8.0.1

6 10

[libvirt] [PATCH] Log flags passed to qemuMigrationPrepare{Tunnel, Direct} APIs
by Michal Privoznik 18 Jan '13

18 Jan '13

We are already logging other arguments passed, however, @flags were missing there. --- Pushed as these chunks were ACKed and are not really part of my NBD patchset: https://www.redhat.com/archives/libvir-list/2013-January/msg01306.html src/qemu/qemu_migration.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 465dbc1..d03e361 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -1787,9 +1787,10 @@ qemuMigrationPrepareTunnel(virQEMUDriverPtr driver, int ret; VIR_DEBUG("driver=%p, dconn=%p, cookiein=%s, cookieinlen=%d, " - "cookieout=%p, cookieoutlen=%p, st=%p, dname=%s, dom_xml=%s", + "cookieout=%p, cookieoutlen=%p, st=%p, dname=%s, dom_xml=%s " + "flags=%lx", driver, dconn, NULLSTR(cookiein), cookieinlen, - cookieout, cookieoutlen, st, NULLSTR(dname), dom_xml); + cookieout, cookieoutlen, st, NULLSTR(dname), dom_xml, flags); /* QEMU will be started with -incoming stdio (which qemu_command might * convert to exec:cat or fd:n) @@ -1823,10 +1824,10 @@ qemuMigrationPrepareDirect(virQEMUDriverPtr driver, VIR_DEBUG("driver=%p, dconn=%p, cookiein=%s, cookieinlen=%d, " "cookieout=%p, cookieoutlen=%p, uri_in=%s, uri_out=%p, " - "dname=%s, dom_xml=%s", + "dname=%s, dom_xml=%s flags=%lx", driver, dconn, NULLSTR(cookiein), cookieinlen, cookieout, cookieoutlen, NULLSTR(uri_in), uri_out, - NULLSTR(dname), dom_xml); + NULLSTR(dname), dom_xml, flags); /* The URI passed in may be NULL or a string "tcp://somehostname:port". * -- 1.8.0.2

1 0

[libvirt] [PATCH] build: Fix RPM build errors related to libvirt-lxc API
by Viktor Mihajlovski 18 Jan '13

18 Jan '13

Added missing entries to makefile and spec. Signed-off-by: Viktor Mihajlovski <mihajlov(a)linux.vnet.ibm.com> --- docs/Makefile.am | 2 +- libvirt.spec.in | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/docs/Makefile.am b/docs/Makefile.am index b1fa77a..c95497f 100644 --- a/docs/Makefile.am +++ b/docs/Makefile.am @@ -120,7 +120,7 @@ EXTRA_DIST= \ hacking1.xsl hacking2.xsl wrapstring.xsl \ $(dot_html) $(dot_html_in) $(gif) $(apihtml) $(apipng) \ $(devhelphtml) $(devhelppng) $(devhelpcss) $(devhelpxsl) \ - $(xml) $(qemu_xml) $(fig) $(png) $(css) \ + $(xml) $(qemu_xml) $(lxc_xml) $(fig) $(png) $(css) \ $(patches) $(dot_php_in) $(dot_php_code_in) $(dot_php)\ $(internals_html_in) $(internals_html) \ sitemap.html.in \ diff --git a/libvirt.spec.in b/libvirt.spec.in index dca5053..3486d29 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -1983,6 +1983,7 @@ fi %doc AUTHORS NEWS README COPYING.LIB %{_libdir}/python*/site-packages/libvirt.py* %{_libdir}/python*/site-packages/libvirt_qemu.py* +%{_libdir}/python*/site-packages/libvirt_lxc.py* %{_libdir}/python*/site-packages/libvirtmod* %doc python/tests/*.py %doc python/TODO -- 1.7.9.5

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[libvirt] Coverity update
by John Ferlan 18 Jan '13

18 Jan '13

Taking Eric's suggestion from: https://www.redhat.com/archives/libvir-list/2013-January/msg01050.html There's two changes that have yet to be reviewed: https://www.redhat.com/archives/libvir-list/2013-January/msg00537.html https://www.redhat.com/archives/libvir-list/2013-January/msg00541.html After this recent set of 10 patches there are about 20 patches remaining. With the 2 above and the 10 from yesterday, the coverity defect list stands at 236 (down from 297). Of those, about 50 are related to a sdt.h macro issue, 50 are false positives requiring a comment change, and another 95 can be fixed/resolved by a very simple (but yet unnecessary) change to src/esx/esx_vi.c and src/esx/esx_vi_types.c. Each module as a __TEMPLATE__FREE() macro which does the following: item=*ptrptr; \ \ _body \ \ VIR_FREE(*ptrptr); \ Coverity has a hard time with the VIR_FREE(*ptrptr) here and in other modules, thus it decides we must be leaking. No amount of tagging completely removes all the warnings (I tried adding them everywhere and only reduced the count, not eliminated). There is a solution, but I really don't like it. If the VIR_FREE(*ptrptr) is changed to: VIR_FREE(item); \ *ptrptr = NULL; \ Coverity is happy. I asked about this on a Coverity community message board, but no one has an answer. I even generated a small program which replicated the issue. In a way I think it could be a Coverity bug, but I'm not sure I want to make that claim yet. John

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[libvirt] [PATCH] qemu: Double mutex unlock in qemuDomainModifyDeviceFlags
by Viktor Mihajlovski 18 Jan '13

18 Jan '13

The driver mutex was unlocked in qemuDomainModifyDeviceFlags before entering qemuDomainObjBeginJobWithDriver where it will be unlocked once more leaving it in an undefined state. The result was that two threads were simultaneously looking up the domain hash table during multiple parallel device attach/detach operations. Luckily this triggered a virHashIterationError. Signed-off-by: Viktor Mihajlovski <mihajlov(a)linux.vnet.ibm.com> --- src/qemu/qemu_driver.c | 1 - 1 file changed, 1 deletion(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 8c39864..c28c223 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -6443,7 +6443,6 @@ qemuDomainModifyDeviceFlags(virDomainPtr dom, const char *xml, qemuDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); - qemuDriverUnlock(driver); if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; virUUIDFormat(dom->uuid, uuidstr); -- 1.7.9.5

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Re: [libvirt] Redefinition of struct in6_addr in <netinet/in.h> and <linux/in6.h>
by Carlos O'Donell 18 Jan '13

18 Jan '13

On Thu, Jan 17, 2013 at 11:20 PM, Mike Frysinger <vapier(a)gentoo.org> wrote: > On Wednesday 16 January 2013 22:15:38 David Miller wrote: >> From: Carlos O'Donell <carlos(a)systemhalted.org> >> Date: Wed, 16 Jan 2013 21:15:03 -0500 >> >> > +/* If a glibc-based userspace has already included in.h, then we will >> > not + * define in6_addr (nor the defines), sockaddr_in6, or ipv6_mreq. >> > The + * ABI used by the kernel and by glibc match exactly. Neither the >> > kernel + * nor glibc should break this ABI without coordination. >> > + */ >> > +#ifndef _NETINET_IN_H >> > + >> >> I think we should shoot for a non-glibc-centric solution. >> >> I can't imagine that other libc's won't have the same exact problem >> with their netinet/in.h conflicting with the kernel's, redefining >> structures like in6_addr, that we'd want to provide a protection >> scheme for here as well. > > yes, the kernel's use of __GLIBC__ in exported headers has already caused > problems in the past. fortunately, it's been reduced down to just one case > now (stat.h). let's not balloon it back up. > -mike I also see coda.h has grown a __GLIBC__ usage. In the next revision of the patch I created a single libc-compat.h header which encompasses the logic for any libc that wants to coordinate with the kernel headers. It's simple enough to move all of the __GLIBC__ uses into libc-compat.h, then you control userspace libc coordination from one file. Cheers, Carlos.

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[libvirt] [PATCH 00/12] Introduce public APIs for dealing with virTypedParameters
by Jiri Denemark 18 Jan '13

18 Jan '13

Working with virTypedParameters in clients written in C is ugly and requires all clients to duplicate the same code. This set of APIs makes this code for manipulating with virTypedParameters integral part of libvirt so that all clients may benefit from it. Jiri Denemark (12): Add virTypedParams* APIs virsh: Use virTypedParams* APIs in blkdeviotune virsh: Use virTypedParams* APIs in blkiotune virsh: Use virTypedParams* APIs in domiftune virsh: Use virTypedParams* APIs in schedinfo virsh: Use virTypedParams* APIs in domblkstat virsh: Use virTypedParams* APIs in memtune virsh: Use virTypedParams* APIs in numatune virsh: Use virTypedParams* APIs in node-memory-tune virsh: Use virTypedParams* APIs in cpu-stats Introduce virTypedParamsClear public API python: Avoid freeing uninitialized new_params pointer daemon/remote.c | 34 +- include/libvirt/libvirt.h.in | 95 ++++++ python/generator.py | 20 ++ python/libvirt-override.c | 73 ++-- src/libvirt_private.syms | 1 - src/libvirt_public.syms | 18 + src/remote/remote_driver.c | 4 +- src/rpc/gendispatch.pl | 3 +- src/util/virtypedparam.c | 782 ++++++++++++++++++++++++++++++++++++++++++- src/util/virtypedparam.h | 2 - tools/virsh-domain-monitor.c | 5 +- tools/virsh-domain.c | 542 +++++++++++------------------- tools/virsh-host.c | 78 ++--- tools/virsh.c | 20 -- 14 files changed, 1171 insertions(+), 506 deletions(-) -- 1.8.1.1

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