December 2015 - Devel - libvirt List Archives

[libvirt] [PATCH lxc_ethernet] lxc:support network type with ethernet
by zhongguocheng1＠163.com 23 Mar '16

23 Mar '16

From: z00209963 <z00209963(a)szxbz472.huaweiobz.com> --- src/lxc/lxc_process.c | 35 +++++++++++++++++++++++++++++++++++ src/lxc/lxc_process.h | 3 +++ 2 files changed, 38 insertions(+) diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c index 57e3880..1ffd9ac 100644 --- a/src/lxc/lxc_process.c +++ b/src/lxc/lxc_process.c @@ -359,6 +359,38 @@ char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn, return ret; } +char *virLXCProcessSetupInterfaceEthernet(virDomainDefPtr vm, + virDomainNetDefPtr net) +{ + char *ret = NULL; + char *parentVeth; + char *containerVeth = NULL; + + VIR_DEBUG("calling vethCreate()"); + parentVeth = net->ifname; + if (virNetDevVethCreate(&parentVeth, &containerVeth) < 0) + goto cleanup; + VIR_DEBUG("parentVeth: %s, containerVeth: %s", parentVeth, containerVeth); + + if (net->ifname == NULL) + net->ifname = parentVeth; + + if (virNetDevSetMAC(containerVeth, &net->mac) < 0) + goto cleanup; + + if (virNetDevSetOnline(parentVeth, true) < 0) + goto cleanup; + + if (net->filter && + virDomainConfNWFilterInstantiate(vm->uuid, net) < 0) + goto cleanup; + + ret = containerVeth; + + cleanup: + return ret; +} + static const char *nsInfoLocal[VIR_LXC_DOMAIN_NAMESPACE_LAST] = { [VIR_LXC_DOMAIN_NAMESPACE_SHARENET] = "net", [VIR_LXC_DOMAIN_NAMESPACE_SHAREIPC] = "ipc", @@ -559,6 +591,9 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn, break; case VIR_DOMAIN_NET_TYPE_ETHERNET: + if (!(veth = virLXCProcessSetupInterfaceEthernet(def, + net))) + goto cleanup; break; case VIR_DOMAIN_NET_TYPE_USER: diff --git a/src/lxc/lxc_process.h b/src/lxc/lxc_process.h index b6c8083..cc8e707 100644 --- a/src/lxc/lxc_process.h +++ b/src/lxc/lxc_process.h @@ -53,5 +53,8 @@ char *virLXCProcessSetupInterfaceBridged(virDomainDefPtr vm, char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn, virDomainDefPtr def, virDomainNetDefPtr net); +char *virLXCProcessSetupInterfaceEthernet(virDomainDefPtr vm, + virDomainNetDefPtr net); + #endif /* __LXC_PROCESS_H__ */ -- 2.5.1.windows.1

4 4

[libvirt] Libvirt bite sized tasks
by Michal Privoznik 20 Mar '16

20 Mar '16

Dear lists, I've just started new wiki page which aim is to summarize small and trivial tasks, that starting contributors can take, investigate and implement. The aim is to give them something easy to start with while not scaring them out about complexity of our code. The page can be found here: http://wiki.libvirt.org/page/BiteSizedTasks The name is copied from qemu wiki: http://wiki.qemu.org/BiteSizedTasks Please, feel free to extend the list. I plan to use it in the future when interviewing GSoC candidates. Michal

3 4

[libvirt] [FOR 1.3.0 PATCH] conf: add net device prefix for Xen
by Jim Fehlig 24 Feb '16

24 Feb '16

In commit d2e5538b1, the libxl driver was changed to copy interface names autogenerated by libxl to the corresponding network def in the domain's virDomainDef object. The copied name is freed when the domain transitions to the shutoff state. But when migrating a domain, the autogenerated name is included in the XML sent to the destination host. It is possible an interface with the same name already exists on the destination host, causing migration to fail. Indeed the Xen project's OSSTEST CI already encountered such a failure. This patch defines another VIR_NET_GENERATED_PREFIX for Xen, allowing the autogenerated names to be excluded when parsing and formatting inactive config. Signed-off-by: Jim Fehlig <jfehlig(a)suse.com> --- This is an alternative approach to Joao's fix for this regression https://www.redhat.com/archives/libvir-list/2015-December/msg00197.html I think it is the same approach used by the qemu driver. My only reservation is that it expands the potential for clashes with user-defined names. I.e. with this change both 'vnet' and 'vif' are reserved prefixes. src/conf/domain_conf.c | 6 ++++-- src/conf/domain_conf.h | 4 ++++ src/libxl/libxl_domain.c | 5 +++-- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 2f5c0ed..debcf4e 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -8428,7 +8428,8 @@ virDomainNetDefParseXML(virDomainXMLOptionPtr xmlopt, ifname = virXMLPropString(cur, "dev"); if (ifname && (flags & VIR_DOMAIN_DEF_PARSE_INACTIVE) && - STRPREFIX(ifname, VIR_NET_GENERATED_PREFIX)) { + (STRPREFIX(ifname, VIR_NET_GENERATED_PREFIX) || + STRPREFIX(ifname, VIR_NET_GENERATED_PREFIX_XEN))) { /* An auto-generated target name, blank it out */ VIR_FREE(ifname); } @@ -19790,7 +19791,8 @@ virDomainNetDefFormat(virBufferPtr buf, virBufferEscapeString(buf, "<backenddomain name='%s'/>\n", def->domain_name); if (def->ifname && !((flags & VIR_DOMAIN_DEF_FORMAT_INACTIVE) && - (STRPREFIX(def->ifname, VIR_NET_GENERATED_PREFIX)))) { + (STRPREFIX(def->ifname, VIR_NET_GENERATED_PREFIX) || + STRPREFIX(def->ifname, VIR_NET_GENERATED_PREFIX_XEN)))) { /* Skip auto-generated target names for inactive config. */ virBufferEscapeString(buf, "<target dev='%s'/>\n", def->ifname); } diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 90d8e13..d2cc26f 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1085,6 +1085,10 @@ struct _virDomainNetDef { * by libvirt, and cannot be used for a persistent network name. */ # define VIR_NET_GENERATED_PREFIX "vnet" +/* Used for prefix of ifname of any network name generated dynamically + * by libvirt for Xen, and cannot be used for a persistent network name. */ +# define VIR_NET_GENERATED_PREFIX_XEN "vif" + typedef enum { VIR_DOMAIN_CHR_DEVICE_STATE_DEFAULT = 0, VIR_DOMAIN_CHR_DEVICE_STATE_CONNECTED, diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index ef92974..c5d84a4 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -734,7 +734,7 @@ libxlDomainCleanup(libxlDriverPrivatePtr driver, for (i = 0; i < vm->def->nnets; i++) { virDomainNetDefPtr net = vm->def->nets[i]; - if (STRPREFIX(net->ifname, "vif")) + if (STRPREFIX(net->ifname, VIR_NET_GENERATED_PREFIX_XEN)) VIR_FREE(net->ifname); } } @@ -918,7 +918,8 @@ libxlDomainCreateIfaceNames(virDomainDefPtr def, libxl_domain_config *d_config) if (net->ifname) continue; - ignore_value(virAsprintf(&net->ifname, "vif%d.%d%s", + ignore_value(virAsprintf(&net->ifname, + VIR_NET_GENERATED_PREFIX_XEN "%d.%d%s", def->id, x_nic->devid, suffix)); } } -- 2.6.1

3 8

[libvirt] [PATCH v7 00/13] qemu: Add quorum support to libvirt
by Matthias Gatto 23 Feb '16

23 Feb '16

The purpose of these patches is to introduce quorum for libvirt I've try to follow this proposal: http://www.redhat.com/archives/libvir-list/2014-May/msg00533.html This feature ask for 5 task: 1) Allow a _virStorageSource to contain more than one backing store. Because all the actual libvirt code use the backingStore field as a pointer and we needs want to change that, I've decide to encapsulate the backingStore field to simplifie the array manipulation. 2) Add the missing field a quorum need in _virStorageSource and the VIR_STORAGE_TYPE_QUORUM and VIR_STORAGE_FILE_QUORUM in their respectives enums. 3) Parse and format the xml Because a quorum allows to have more than one backing store at the same level we need to change virDomainDiskDefFormat and virDomainDiskDefParseXML to call virDomainDiskBackingStoreFormat and virDomainDiskBackingStoreParse in a loop. virDomainDiskBackingStoreFormat and virDomainDiskBackingStoreParse can call themself recursively in a loop because a quorum can contain another quorum 4) Build qemu string As for the xml, we have to call the function which create quorum recursively. But this task have the problem explained here: http://www.redhat.com/archives/libvir-list/2014-October/msg00529.html The _virStorageSource missing some informations that can be passed to a child, and therefore this version of quorum is incomplet. 5) Allow to hotplug/change a disk in a quorum This part is not present in these patches because for this task we have to use blockdev-add, and currently libvirt use device_add for hotpluging that doesn't allow to hotplug quorum childs. V2: -Rebase on master -Add Documentation V3: -Transforme the backingStore field in virStorageSource into an array of pointer instead of a pointer -Modify virStorageSourceSetBackingStore to allow it to expand the backingStore size. V4: -Rebase on master V5: -Rebase on master -patch 1-4/9: use patchs from John Ferlan -patch 4/9: check return of virStorageSourceSetBackingStore -patch 5/9: report type of error on virStorageSourceSetBackingStore v6: -Rebase on master -Remove node-name patch -patch 06/13: Add virStorageSourceIsRAID -patch 10/13: Add virDomainDefHasRAID -patch 11-13/13: Block all unsupported operations v7: -Rebase on master. -Parse unconditionally backing store. -fold qemuBuildRAIDFileSourceStr into qemuBuildRAIDStr. -use 0/-1 return values when failing instead of bool. -virStorageSourceSetBackingStore now free backing store when they are already set. Matthias Gatto (13): virstoragefile: Add virStorageSourceGetBackingStore virstoragefile: Always use virStorageSourceGetBackingStore to get backing store virstoragefile: Add virStorageSourceSetBackingStore virstoragefile: Always use virStorageSourceSetBackingStore to set backing store virstoragefile: change backingStore to backingStores. virstoragefile: Add virStorageSourceIsRAID virstoragefile: Add quorum in virstoragefile domain_conf: Read and Write quorum config qemu: Add quorum support in qemuBuildDriveDevStr domain: Add virDomainDefHasRAID qemu: Forbid blocks operations with quorum qemu: qemuDomainGetBlockInfo quorum support qemu: qemuDiskPathToAlias quorum support docs/formatdomain.html.in | 23 ++++- docs/schemas/domaincommon.rng | 21 +++- docs/schemas/storagecommon.rng | 1 + docs/schemas/storagevol.rng | 1 + src/conf/domain_conf.c | 174 ++++++++++++++++++++++++---------- src/conf/domain_conf.h | 1 + src/conf/storage_conf.c | 23 +++-- src/libvirt_private.syms | 4 + src/qemu/qemu_cgroup.c | 4 +- src/qemu/qemu_command.c | 78 +++++++++++++++ src/qemu/qemu_domain.c | 2 +- src/qemu/qemu_driver.c | 72 ++++++++++---- src/qemu/qemu_migration.c | 1 + src/qemu/qemu_monitor_json.c | 4 +- src/security/security_dac.c | 2 +- src/security/security_selinux.c | 4 +- src/security/virt-aa-helper.c | 2 +- src/storage/storage_backend.c | 24 +++-- src/storage/storage_backend_fs.c | 45 +++++---- src/storage/storage_backend_gluster.c | 11 ++- src/storage/storage_backend_logical.c | 15 ++- src/storage/storage_driver.c | 3 +- src/util/virstoragefile.c | 121 ++++++++++++++++++++--- src/util/virstoragefile.h | 15 ++- tests/virstoragetest.c | 18 ++-- 25 files changed, 518 insertions(+), 151 deletions(-) -- 2.6.2

4 27

[libvirt] [PATCH v2 0/5] Add virtio-gpu & virgl support
by Marc-André Lureau 18 Feb '16

18 Feb '16

The following series allow using virtio-gpu and virgl if qemu support it. Ths Spice bits are not yet in qemu 2.5, but should make it in 2.6 and I added the RFC patches that are expected to not change much. v1->v2: addressing Ján Tomko review - update accel2d/accel3d to be tristate and fix its usage - use a single QEMU_CAPS_DEVICE_VIRTIO_GPU cap for -device virtio-gpu-* & virtio-vga - remove qemu legacy, -vga support or command line parsing - add xml2xml tests - squash xml2argvtests with their respecitve feature addition commits - update libvirt version in doc - update commit messages Marc-André Lureau (5): Replace support{2d,3d} with accel{2d,3d} domain: replace bool accel{2d,3d} with a tristate qemu: add virtio video device qemu: add virtio-gpu virgl support RFC qemu: add spice opengl support docs/formatdomain.html.in | 11 +- docs/schemas/domaincommon.rng | 6 + src/conf/domain_conf.c | 84 +- src/conf/domain_conf.h | 6 +- src/qemu/qemu_capabilities.c | 12 + src/qemu/qemu_capabilities.h | 3 + src/qemu/qemu_command.c | 40 +- src/vbox/vbox_common.c | 18 +- src/vz/vz_sdk.c | 2 +- tests/qemucapabilitiesdata/caps_1.2.2-1.replies | 22 +- tests/qemucapabilitiesdata/caps_1.3.1-1.replies | 22 +- tests/qemucapabilitiesdata/caps_1.4.2-1.replies | 22 +- tests/qemucapabilitiesdata/caps_1.5.3-1.replies | 22 +- tests/qemucapabilitiesdata/caps_1.6.0-1.replies | 22 +- tests/qemucapabilitiesdata/caps_1.6.50-1.replies | 22 +- tests/qemucapabilitiesdata/caps_2.1.1-1.replies | 22 +- tests/qemucapabilitiesdata/caps_2.4.0-1.caps | 1 + tests/qemucapabilitiesdata/caps_2.4.0-1.replies | 95 +- tests/qemucapabilitiesdata/caps_2.5.0-1.caps | 168 + tests/qemucapabilitiesdata/caps_2.5.0-1.replies | 4043 ++++++++++++++++++++ tests/qemucapabilitiestest.c | 1 + .../qemuxml2argv-video-virtio-gpu-device.args | 23 + .../qemuxml2argv-video-virtio-gpu-device.xml | 31 + .../qemuxml2argv-video-virtio-gpu-spice-gl.args | 23 + .../qemuxml2argv-video-virtio-gpu-spice-gl.xml | 36 + .../qemuxml2argv-video-virtio-gpu-virgl.args | 23 + .../qemuxml2argv-video-virtio-gpu-virgl.xml | 33 + tests/qemuxml2argvtest.c | 14 + tests/qemuxml2xmltest.c | 4 + 29 files changed, 4732 insertions(+), 99 deletions(-) create mode 100644 tests/qemucapabilitiesdata/caps_2.5.0-1.caps create mode 100644 tests/qemucapabilitiesdata/caps_2.5.0-1.replies create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-virtio-gpu-device.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-virtio-gpu-device.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-virtio-gpu-spice-gl.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-virtio-gpu-spice-gl.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-virtio-gpu-virgl.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-video-virtio-gpu-virgl.xml -- 2.5.0

4 16

[libvirt] [PATCHv3 0/2] notify about reverting to a snapshot
by Dmitry Andreev 18 Feb '16

18 Feb '16

Reverting to snapshot may change domain configuration but there will be no events about that. Lack of the event become a problem for virt-manager https://bugzilla.redhat.com/show_bug.cgi?id=1081148 This patch-set introduces new event and emits it in qemuDomainRevertToSnapshot. v3: [2/2] event is emited only in the case when stopped domain is reverted to a stopped domain. Dmitry Andreev (2): Introduce new VIR_DOMAIN_EVENT_DEFINED_FROM_SNAPSHOT sub-event qemu: emit 'defined' event after reverted to snapshot without state changes examples/object-events/event-test.c | 2 ++ include/libvirt/libvirt-domain.h | 1 + src/qemu/qemu_driver.c | 8 +++++++- tools/virsh-domain.c | 3 ++- 4 files changed, 12 insertions(+), 2 deletions(-) -- 1.8.3.1

3 5

[libvirt] [PATCH] libvirt-guests: emit most messages to stderr
by Michael Chapman 17 Feb '16

17 Feb '16

Some of the shell functions in this script (e.g. check_guests_shutdown) produce output that is captured and processed by other parts of the script. Any error messages from these shell functions must go to stderr, not stdout. Rather than trying to determine which messages are safe for stdout and which are not (and maintaining this safety as the script is refactored), simplify things by emitting all messages to stderr, except for the output from gueststatus(), rh_status() and usage(). Signed-off-by: Michael Chapman <mike(a)very.puzzling.org> --- tools/libvirt-guests.sh.in | 94 +++++++++++++++++++++++----------------------- 1 file changed, 47 insertions(+), 47 deletions(-) diff --git a/tools/libvirt-guests.sh.in b/tools/libvirt-guests.sh.in index 7f74b85..80b1ec7 100644 --- a/tools/libvirt-guests.sh.in +++ b/tools/libvirt-guests.sh.in @@ -92,16 +92,16 @@ test_connect() i=${CONNECT_RETRIES} while [ $i -gt 0 ]; do - run_virsh "$uri" connect 2>/dev/null + run_virsh "$uri" connect >/dev/null 2>/dev/null if [ $? -eq 0 ]; then return 0; fi sleep ${RETRIES_SLEEP} - eval_gettext "Unable to connect to libvirt currently. Retrying .. \$i" + eval_gettext "Unable to connect to libvirt currently. Retrying .. \$i" >&2 i=$(($i-1)) done - eval_gettext "Can't connect to \$uri. Skipping." - echo + eval_gettext "Can't connect to \$uri. Skipping." >&2 + echo >&2 return 1 } @@ -163,8 +163,8 @@ start() { [ -f "$LISTFILE" ] || { started; return 0; } if [ "x$ON_BOOT" != xstart ]; then - gettext "libvirt-guests is configured not to start any guests on boot" - echo + gettext "libvirt-guests is configured not to start any guests on boot" >&2 + echo >&2 rm -f "$LISTFILE" started return 0 @@ -187,19 +187,19 @@ start() { done set +f if ! "$configured"; then - eval_gettext "Ignoring guests on \$uri URI"; echo + eval_gettext "Ignoring guests on \$uri URI" >&2; echo >&2 continue fi test_connect "$uri" || continue - eval_gettext "Resuming guests on \$uri URI..."; echo + eval_gettext "Resuming guests on \$uri URI..." >&2; echo >&2 for guest in $list; do name=$(guest_name "$uri" "$guest") - eval_gettext "Resuming guest \$name: " + eval_gettext "Resuming guest \$name: " >&2 if guest_is_on "$uri" "$guest"; then if "$guest_running"; then - gettext "already active"; echo + gettext "already active" >&2; echo >&2 else if "$isfirst"; then isfirst=false @@ -208,7 +208,7 @@ start() { fi retval run_virsh "$uri" start $bypass "$name" \ >/dev/null && \ - gettext "done"; echo + gettext "done" >&2; echo >&2 if "$sync_time"; then run_virsh "$uri" domtime --sync "$name" >/dev/null fi @@ -234,7 +234,7 @@ suspend_guest() bypass= slept=0 test "x$BYPASS_CACHE" = x0 || bypass=--bypass-cache - printf '%s...\n' "$label" + printf '%s...\n' "$label" >&2 run_virsh "$uri" managedsave $bypass "$guest" >/dev/null & virsh_pid=$! while true; do @@ -246,9 +246,9 @@ suspend_guest() progress=$(run_virsh_c "$uri" domjobinfo "$guest" 2>/dev/null | \ awk '/^Data processed:/{print $3, $4}') if [ -n "$progress" ]; then - printf '%s%s\n' "$label" "$progress" + printf '%s%s\n' "$label" "$progress" >&2 else - printf '%s%s\n' "$label" "..." + printf '%s%s\n' "$label" "..." >&2 fi fi done @@ -264,8 +264,8 @@ shutdown_guest() guest=$2 name=$(guest_name "$uri" "$guest") - eval_gettext "Starting shutdown on guest: \$name" - echo + eval_gettext "Starting shutdown on guest: \$name" >&2 + echo >&2 retval run_virsh "$uri" shutdown "$guest" >/dev/null || return timeout=$SHUTDOWN_TIMEOUT check_timeout=false @@ -283,24 +283,24 @@ shutdown_guest() if $check_timeout; then if [ $(($timeout % 5)) -eq 0 ]; then - printf "$format" "$name" "$timeout" + printf "$format" "$name" "$timeout" >&2 fi timeout=$(($timeout - 1)) else slept=$(($slept + 1)) if [ $(($slept % 5)) -eq 0 ]; then - printf "$format" "$name" + printf "$format" "$name" >&2 fi fi done if guest_is_on "$uri" "$guest"; then if "$guest_running"; then - eval_gettext "Shutdown of guest \$name failed to complete in time." + eval_gettext "Shutdown of guest \$name failed to complete in time." >&2 else - eval_gettext "Shutdown of guest \$name complete." + eval_gettext "Shutdown of guest \$name complete." >&2 fi - echo + echo >&2 fi } @@ -313,8 +313,8 @@ shutdown_guest_async() guest=$2 name=$(guest_name "$uri" "$guest") - eval_gettext "Starting shutdown on guest: \$name" - echo + eval_gettext "Starting shutdown on guest: \$name" >&2 + echo >&2 retval run_virsh "$uri" shutdown "$guest" > /dev/null } @@ -337,8 +337,8 @@ check_guests_shutdown() guests_up= for guest in $guests; do if ! guest_is_on "$uri" "$guest" >/dev/null 2>&1; then - eval_gettext "Failed to determine state of guest: \$guest. Not tracking it anymore." - echo + eval_gettext "Failed to determine state of guest: \$guest. Not tracking it anymore." >&2 + echo >&2 continue fi if "$guest_running"; then @@ -363,8 +363,8 @@ print_guests_shutdown() esac name=$(guest_name "$uri" "$guest") - eval_gettext "Shutdown of guest \$name complete." - echo + eval_gettext "Shutdown of guest \$name complete." >&2 + echo >&2 done } @@ -404,18 +404,18 @@ shutdown_guests_parallel() if $check_timeout; then if [ $(($timeout % 5)) -eq 0 ]; then - printf "$format" $(($guestcount + $shutdowncount)) "$timeout" + printf "$format" $(($guestcount + $shutdowncount)) "$timeout" >&2 fi timeout=$(($timeout - 1)) if [ $timeout -le 0 ]; then - eval_gettext "Timeout expired while shutting down domains"; echo + eval_gettext "Timeout expired while shutting down domains" >&2; echo >&2 RETVAL=1 return fi else slept=$(($slept + 1)) if [ $(($slept % 5)) -eq 0 ]; then - printf "$format" $(($guestcount + $shutdowncount)) + printf "$format" $(($guestcount + $shutdowncount)) >&2 fi fi @@ -435,8 +435,8 @@ stop() { if [ "x$ON_SHUTDOWN" = xshutdown ]; then suspending=false if [ $SHUTDOWN_TIMEOUT -lt 0 ]; then - gettext "SHUTDOWN_TIMEOUT must be equal or greater than 0" - echo + gettext "SHUTDOWN_TIMEOUT must be equal or greater than 0" >&2 + echo >&2 RETVAL=6 return fi @@ -449,21 +449,21 @@ stop() { test_connect "$uri" || continue - eval_gettext "Running guests on \$uri URI: " + eval_gettext "Running guests on \$uri URI: " >&2 list=$(list_guests "$uri") if [ $? -eq 0 ]; then empty=true for uuid in $list; do - "$empty" || printf ", " - printf %s "$(guest_name "$uri" "$uuid")" + "$empty" || printf ", " >&2 + printf %s "$(guest_name "$uri" "$uuid")" >&2 empty=false done if "$empty"; then - gettext "no running guests." + gettext "no running guests." >&2 fi - echo + echo >&2 fi if "$suspending"; then @@ -472,26 +472,26 @@ stop() { empty=true for uuid in $transient; do if "$empty"; then - eval_gettext "Not suspending transient guests on URI: \$uri: " + eval_gettext "Not suspending transient guests on URI: \$uri: " >&2 empty=false else - printf ", " + printf ", " >&2 fi - printf %s "$(guest_name "$uri" "$uuid")" + printf %s "$(guest_name "$uri" "$uuid")" >&2 done - echo + echo >&2 # reload domain list to contain only persistent guests list=$(list_guests "$uri" "--persistent") if [ $? -ne 0 ]; then - eval_gettext "Failed to list persistent guests on \$uri" - echo + eval_gettext "Failed to list persistent guests on \$uri" >&2 + echo >&2 RETVAL=1 set +f return fi else - gettext "Failed to list transient guests" - echo + gettext "Failed to list transient guests" >&2 + echo >&2 RETVAL=1 set +f return @@ -507,9 +507,9 @@ stop() { if [ -s "$LISTFILE" ]; then while read uri list; do if "$suspending"; then - eval_gettext "Suspending guests on \$uri URI..."; echo + eval_gettext "Suspending guests on \$uri URI..." >&2; echo >&2 else - eval_gettext "Shutting down guests on \$uri URI..."; echo + eval_gettext "Shutting down guests on \$uri URI..." >&2; echo >&2 fi if [ "$PARALLEL_SHUTDOWN" -gt 1 ] && -- 2.4.3

2 3

[libvirt] ARM KVM GICv3 Support
by Christoffer Dall 15 Feb '16

15 Feb '16

Hi all, I'm trying to figure out what the correct solution for libvirt support for ARM KVM guests with GICv3 is. The challenge is that QEMU's virt machine model defaults to GICv2 unless you specify an additional "-machine gic-version=host" parameter to QEMU, in which case your VM gets the same GIC version as your host. Now, I'm told that this is inconvenient for libvirt, because it typically does not pass any -machine options, is that correct? Further, there are two additional complications: First, some guest images may not include GICv3 support. For Linux, this is relatively old kernels (prior to v3.17), but other guests may only support GICv2. Second, some hardware platforms only support GICv2 guests, some only support GICv3 guests, and some support both GICv2 and GICv3 guests (those hosts with a GICv3 with the backwards compatibility support). It is unclear to me how libvirt users will relate to these constraints. For example, in an OpenStack deployment, will it somehow be easy to tell which nodes support which GIC version such that administrators can choose compatible VM images, or how does that work? The end goal here is to determine if we need to add any functionality to QEMU to better support libvirt, and what kind of features/glue need to be added to libvirt for this to work. Much thanks for any feedback! -Christoffer

12 53

[libvirt] Found mem leak in livirt, need help to debug
by Piotr Rybicki 11 Feb '16

11 Feb '16

Hi. There is a mem leak in libvirt, when doing external snapshot (for backup purposes). My KVM domain uses raw storage images via libgfapi. I'm using latest 1.2.21 libvirt (although previous versions act the same). My bash script for snapshot backup uses series of shell commands (virsh connect to a remote libvirt host): * virsh domblklist KVM * qemu-img create -f qcow2 -o backing_file=gluster(...) - precreate backing file * virsh snapshot-create KVM SNAP.xml (...) - create snapshot from precreated XML snapshot file * cp main img file * virsh blockcommit KVM disk (...) Backup script works fine, however libvirtd process gets bigger and bigger each time I run this script. Some proof of memleak: 32017 - libvirtd pid When libvirt started: # ps p 32017 o vsz,rss VSZ RSS 585736 15220 When I start KVM via virsh start KVM # ps p 32017 o vsz,rss VSZ RSS 1327968 125956 When i start backup script, after snapshot is created (lots of mem allocated) # ps p 32017 o vsz,rss VSZ RSS 3264544 537632 After backup script finished # ps p 32017 o vsz,rss VSZ RSS 3715920 644940 When i start backup script for a second time, after snapshot is created # ps p 32017 o vsz,rss VSZ RSS 5521424 1056352 And so on, until libvirt spills 'Out of memory' when connecting, ane being really huge process. Now, I would like to diagnose it further, to provide detailed information about memleak. I tried to use valgrind, but unfortunatelly I'm on Opteron 6380 platform, and valgrind doesn't support XOP quitting witch SIGILL. If someone could provide me with detailed information on how to get some usefull debug info about this memleak, i'll be more than happy to do it, and share results here. Thanks in advance and best regards Piotr Rybicki

3 13

[libvirt] oVirt considers using macTableManager='libvirt'
by Ido Barkan 02 Feb '16

02 Feb '16

Hi guys, We, at oVirt, are considring using the automatic bridge management feature of libvirt for our hosts (macTableManager='libvirt'). I could find any discussion in the mailing list archives about the motivation for this feature. (was there?). If there wasn't I would like to start a new one, about the possible trade offs it would have in oVirt. Specifically I have a few questions: 1) The obvious performance motivation is clear: considering N hosts with M vms each connected to the same LAN, the first packet to any unknown yet host will flood all the vms in all N bridges. -- was there any other motivation that I do not understand (apart from slightly better security? 2) oVirt uses TC for port mirroring, in case this is requested by users, to mirror traffic from a chosen bridge to a chosen NIC in the host. I could not understand if macTableManager will interfere with it, or not. 3) Are there any drawbacks to enabling this feature? 4) We aim for rhel7.2. Will the feature be supported (or partially supported) for kernels older then 3.17? And if so, in what way? 5) oVirt currently builds its own bridges and tell libvirt about them. Does that have any affect on the functionality of that feature? 6) are there any plans to support OVS for this feature in the future? -- Thanks, Ido Barkan

4 7