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[libvirt] [PATCH] util: process: Refactor and fix virProcessSetAffinity
by Peter Krempa 03 Jun '15

03 Jun '15

Refactor the function to return the bitmap instead of an integer and the inner workings so that they make more sense. This patch also fixes possible segfault on old systems that was introduced by commit: commit f1a43a8e4139b028257ef4ed05a81cfb5f8a8741 Author: Hu Tao <hutao(a)cn.fujitsu.com> Date: Fri Sep 14 15:46:59 2012 +0800 use virBitmap to store cpu affinity info --- Pushed after review on the libvirt-security list. src/qemu/qemu_driver.c | 5 +-- src/util/virprocess.c | 102 ++++++++++++++++++++++--------------------------- src/util/virprocess.h | 4 +- 3 files changed, 48 insertions(+), 63 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index f32b87e..63001b1 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -1457,8 +1457,7 @@ qemuDomainHelperGetVcpus(virDomainObjPtr vm, virVcpuInfoPtr info, int maxinfo, unsigned char *cpumap = VIR_GET_CPUMAP(cpumaps, maplen, v); virBitmapPtr map = NULL; - if (virProcessGetAffinity(priv->vcpupids[v], - &map, hostcpus) < 0) + if (!(map = virProcessGetAffinity(priv->vcpupids[v]))) return -1; virBitmapToDataBuf(map, cpumap, maplen); @@ -5727,7 +5726,7 @@ qemuDomainGetIOThreadsLive(virQEMUDriverPtr driver, goto endjob; info_ret[i]->iothread_id = iothreads[i]->iothread_id; - if (virProcessGetAffinity(iothreads[i]->thread_id, &map, hostcpus) < 0) + if (!(map = virProcessGetAffinity(iothreads[i]->thread_id))) goto endjob; if (virBitmapToData(map, &info_ret[i]->cpumap, diff --git a/src/util/virprocess.c b/src/util/virprocess.c index 501569f..a38cb75 100644 --- a/src/util/virprocess.c +++ b/src/util/virprocess.c @@ -468,71 +468,60 @@ int virProcessSetAffinity(pid_t pid, virBitmapPtr map) return 0; } -int virProcessGetAffinity(pid_t pid, - virBitmapPtr *map, - int maxcpu) +virBitmapPtr +virProcessGetAffinity(pid_t pid) { size_t i; -# ifdef CPU_ALLOC - /* New method dynamically allocates cpu mask, allowing unlimted cpus */ - int numcpus = 1024; - size_t masklen; cpu_set_t *mask; + size_t masklen; + virBitmapPtr ret = NULL; - /* Not only may the statically allocated cpu_set_t be too small, - * but there is no way to ask the kernel what size is large enough. - * So you have no option but to pick a size, try, catch EINVAL, - * enlarge, and re-try. - * - * http://lkml.org/lkml/2009/7/28/620 - */ - realloc: - masklen = CPU_ALLOC_SIZE(numcpus); - mask = CPU_ALLOC(numcpus); +# ifdef CPU_ALLOC + /* 262144 cpus ought to be enough for anyone */ + masklen = CPU_ALLOC_SIZE(1024 << 8); + mask = CPU_ALLOC(1024 << 8); if (!mask) { virReportOOMError(); - return -1; + return NULL; } CPU_ZERO_S(masklen, mask); +# else + if (VIR_ALLOC(mask) < 0) + return NULL; + + masklen = sizeof(*mask); + CPU_ZERO(mask); +# endif + if (sched_getaffinity(pid, masklen, mask) < 0) { - CPU_FREE(mask); - if (errno == EINVAL && - numcpus < (1024 << 8)) { /* 262144 cpus ought to be enough for anyone */ - numcpus = numcpus << 2; - goto realloc; - } virReportSystemError(errno, _("cannot get CPU affinity of process %d"), pid); - return -1; + goto cleanup; } - *map = virBitmapNew(maxcpu); - if (!*map) - return -1; + if (!(ret = virBitmapNew(masklen * 8))) + goto cleanup; - for (i = 0; i < maxcpu; i++) + for (i = 0; i < masklen * 8; i++) { +# ifdef CPU_ALLOC if (CPU_ISSET_S(i, masklen, mask)) - ignore_value(virBitmapSetBit(*map, i)); - CPU_FREE(mask); + ignore_value(virBitmapSetBit(ret, i)); # else - /* Legacy method uses a fixed size cpu mask, only allows up to 1024 cpus */ - cpu_set_t mask; - - CPU_ZERO(&mask); - if (sched_getaffinity(pid, sizeof(mask), &mask) < 0) { - virReportSystemError(errno, - _("cannot get CPU affinity of process %d"), pid); - return -1; + if (CPU_ISSET(i, mask)) + ignore_value(virBitmapSetBit(ret, i)); +# endif } - for (i = 0; i < maxcpu; i++) - if (CPU_ISSET(i, &mask)) - ignore_value(virBitmapSetBit(*map, i)); + cleanup: +# ifdef CPU_ALLOC + CPU_FREE(mask); +# else + VIR_FREE(mask); # endif - return 0; + return ret; } #elif defined(HAVE_BSD_CPU_AFFINITY) @@ -562,29 +551,29 @@ int virProcessSetAffinity(pid_t pid, return 0; } -int virProcessGetAffinity(pid_t pid, - virBitmapPtr *map, - int maxcpu) +virBitmapPtr +virProcessGetAffinity(pid_t pid) { size_t i; cpuset_t mask; - - if (!(*map = virBitmapNew(maxcpu))) - return -1; + virBitmapPtr ret = NULL; CPU_ZERO(&mask); if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, pid, sizeof(mask), &mask) != 0) { virReportSystemError(errno, _("cannot get CPU affinity of process %d"), pid); - return -1; + return NULL; } - for (i = 0; i < maxcpu; i++) + if (!(*map = virBitmapNew(sizeof(mask) * 8))) + return NULL; + + for (i = 0; i < sizeof(mask) * 8; i++) if (CPU_ISSET(i, &mask)) - ignore_value(virBitmapSetBit(*map, i)); + ignore_value(virBitmapSetBit(ret, i)); - return 0; + return ret; } #else /* HAVE_SCHED_GETAFFINITY */ @@ -597,13 +586,12 @@ int virProcessSetAffinity(pid_t pid ATTRIBUTE_UNUSED, return -1; } -int virProcessGetAffinity(pid_t pid ATTRIBUTE_UNUSED, - virBitmapPtr *map ATTRIBUTE_UNUSED, - int maxcpu ATTRIBUTE_UNUSED) +virBitmapPtr +virProcessGetAffinity(pid_t pid ATTRIBUTE_UNUSED) { virReportSystemError(ENOSYS, "%s", _("Process CPU affinity is not supported on this platform")); - return -1; + return NULL; } #endif /* HAVE_SCHED_GETAFFINITY */ diff --git a/src/util/virprocess.h b/src/util/virprocess.h index c812882..1b98493 100644 --- a/src/util/virprocess.h +++ b/src/util/virprocess.h @@ -58,9 +58,7 @@ int virProcessKillPainfully(pid_t pid, bool force); int virProcessSetAffinity(pid_t pid, virBitmapPtr map); -int virProcessGetAffinity(pid_t pid, - virBitmapPtr *map, - int maxcpu); +virBitmapPtr virProcessGetAffinity(pid_t pid); int virProcessGetStartTime(pid_t pid, unsigned long long *timestamp); -- 2.4.1

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[libvirt] [PATCH] virsh: Fix Ctrl-C behavior when watching a job
by Jiri Denemark 03 Jun '15

03 Jun '15

When watching a job (save, managedsave, dump, migrate) virsh spawns a thread to call the appropriate API and waits for the result while watching for interruption signals (SIGINT, Ctrl-C on the terminal). Whenever such signal is caught, virsh calls virDomainAbortJob, stops waiting for the job, and returns the result of virDomainAbortJob. This is wrong because the job might have finished in the meantime or it might have been cancelled by someone else and virsh would just report the failure to abort the job. However, we are not interested in the virDomainAbortJob's result at all, we need to keep waiting for the main job to finish and report its result instead. https://bugzilla.redhat.com/show_bug.cgi?id=1131755 Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com> --- tools/virsh-domain.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index fc4d1fc..044b088 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -4234,12 +4234,9 @@ vshWatchJob(vshControl *ctl, if (ret > 0) { if (pollfd[1].revents & POLLIN && saferead(STDIN_FILENO, &retchar, sizeof(retchar)) > 0) { - if (vshTTYIsInterruptCharacter(ctl, retchar)) { + if (vshTTYIsInterruptCharacter(ctl, retchar)) virDomainAbortJob(dom); - goto cleanup; - } else { - continue; - } + continue; } if (pollfd[0].revents & POLLIN && @@ -4259,9 +4256,8 @@ vshWatchJob(vshControl *ctl, if (intCaught) { virDomainAbortJob(dom); intCaught = 0; - } else { - continue; } + continue; } goto cleanup; } -- 2.4.1

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[libvirt] [PATCH 0/8 v3] parallels: add vz driver
by Maxim Nestratov 03 Jun '15

03 Jun '15

v2-v3 change: * Patch "parallels: set virtType depending on driver name" reworked. Implemented ability to set virtType depending on driver name. v1-v2 change: * Only "parallels: accept vz as a driver uri and name" patch is changed. Fixed ability to connect to 'parallels' driver and deal with 'Paralells' domain virt type. Maxim Nestratov (8): parallels: introduce vz driver constant and string parallels: use newly introduced VIR_DOMAIN_VIRT_VZ parallels: add new guest capabilities assigned to vz driver parallels: accept vz as a driver uri and name parallels: add a new vz connection driver and hypervisor structures parallels: increment the number of connection drivers parallels: recommend to connect to vz:///system when connection fails parallels: set virtType depending on driver name src/conf/domain_conf.c | 19 ++++++++---- src/conf/domain_conf.h | 1 + src/libvirt.c | 2 +- src/parallels/parallels_driver.c | 63 +++++++++++++++++++++++++++++++++++---- src/parallels/parallels_network.c | 3 +- src/parallels/parallels_sdk.c | 6 +++- src/parallels/parallels_storage.c | 3 +- src/parallels/parallels_utils.h | 1 + 8 files changed, 82 insertions(+), 16 deletions(-) -- 2.1.0

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[libvirt] [PATCH] conf:audit: fix no audit log when start a vm with iothread
by Luyao Huang 03 Jun '15

03 Jun '15

Signed-off-by: Luyao Huang <lhuang(a)redhat.com> --- src/conf/domain_audit.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/conf/domain_audit.c b/src/conf/domain_audit.c index 4ea10d2..1900039 100644 --- a/src/conf/domain_audit.c +++ b/src/conf/domain_audit.c @@ -885,6 +885,8 @@ virDomainAuditStart(virDomainObjPtr vm, const char *reason, bool success) virDomainAuditMemory(vm, 0, vm->def->mem.cur_balloon, "start", true); virDomainAuditVcpu(vm, 0, vm->def->vcpus, "start", true); + if (vm->def->iothreads) + virDomainAuditIOThread(vm, 0, vm->def->iothreads, "start", true); virDomainAuditLifecycle(vm, "start", reason, success); } -- 1.8.3.1

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[libvirt] [PATCH] qemu: fix forget pass the return value to variable @ret
by Luyao Huang 03 Jun '15

03 Jun '15

If we do not pass the return value from qemuDomainRemoveRNGDevice() function to variable @ret, qemuDomainRemoveDevice() functiuon will always fail when recive rng device unplug event from qemu monitor. Signed-off-by: Luyao Huang <lhuang(a)redhat.com> --- src/qemu/qemu_hotplug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 170768b..f596730 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -3271,7 +3271,7 @@ qemuDomainRemoveDevice(virQEMUDriverPtr driver, ret = qemuDomainRemoveChrDevice(driver, vm, dev->data.chr); break; case VIR_DOMAIN_DEVICE_RNG: - qemuDomainRemoveRNGDevice(driver, vm, dev->data.rng); + ret = qemuDomainRemoveRNGDevice(driver, vm, dev->data.rng); break; case VIR_DOMAIN_DEVICE_MEMORY: -- 1.8.3.1

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[libvirt] [PATCH] qemu: fix wrong call addressrelease function when attach RNG device success
by Luyao Huang 03 Jun '15

03 Jun '15

Add a return value check to avoid the wrong address release. Signed-off-by: Luyao Huang <lhuang(a)redhat.com> --- src/qemu/qemu_hotplug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 170768b..f70e3d8 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1695,7 +1695,7 @@ qemuDomainAttachRNGDevice(virQEMUDriverPtr driver, audit: virDomainAuditRNG(vm, NULL, rng, "attach", ret == 0); cleanup: - if (vm) + if (ret < 0 && vm) qemuDomainReleaseDeviceAddress(vm, &rng->info, NULL); VIR_FREE(charAlias); VIR_FREE(objAlias); -- 1.8.3.1

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[libvirt] [PATCHv2] Always add 'console' matching the 'serial' device
by Ján Tomko 02 Jun '15

02 Jun '15

We have been formatting the first serial device also as a console device, but only if there were no other consoles. If there is a <serial> device present in the XML, but no serial <console>, or if there isn't any <console> at all but the domain definition hasn't gone through a parse->format->parse round-trip, the <console> device would not be formatted. Change the code to always add the stub device for the first serial device. Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1089914 --- src/conf/domain_conf.c | 23 +++++++++++++ .../qemuxml2argv-console-compat2.xml | 35 ++++++++++++++++++++ .../qemuxml2xmlout-console-compat2.xml | 38 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 4 files changed, 97 insertions(+) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-console-compat2.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-console-compat2.xml diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 6e57425..ec8f9fa 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -3587,6 +3587,25 @@ virDomainDefPostParseInternal(virDomainDefPtr def, def->consoles[0]->deviceType = VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE; def->consoles[0]->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SERIAL; } + } else if (def->os.type == VIR_DOMAIN_OSTYPE_HVM && def->nserials > 0 && + def->serials[0]->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL && + def->serials[0]->targetType == VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_ISA) { + /* Create a stub console to match the serial port. + * console[0] either does not exist + * or has a different type than SERIAL or NONE. + */ + virDomainChrDefPtr chr; + if (VIR_ALLOC(chr) < 0) + return -1; + + if (VIR_INSERT_ELEMENT(def->consoles, + 0, + def->nconsoles, + chr) < 0) + return -1; + + def->consoles[0]->deviceType = VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE; + def->consoles[0]->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SERIAL; } if (virDomainDefRejectDuplicateControllers(def) < 0) @@ -21588,6 +21607,10 @@ virDomainDefFormatInternal(virDomainDefPtr def, if (virDomainChrDefFormat(buf, &console, flags) < 0) goto error; } + /* The back-compat console device stub is added when parsing the domain XML + * and handled above, this is for formatting definitions created via other + * means. + */ if (def->os.type == VIR_DOMAIN_OSTYPE_HVM && def->nconsoles == 0 && def->nserials > 0) { diff --git a/tests/qemuxml2argvdata/qemuxml2argv-console-compat2.xml b/tests/qemuxml2argvdata/qemuxml2argv-console-compat2.xml new file mode 100644 index 0000000..ded204a --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-console-compat2.xml @@ -0,0 +1,35 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219100</memory> + <currentMemory unit='KiB'>219100</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'/> + <controller type='ide' index='0'/> + <controller type='pci' index='0' model='pci-root'/> + <controller type='virtio-serial' index='0'/> + <serial type='pty'> + <target port='0'/> + </serial> + <console type='pty'> + <target type='virtio' port='0'/> + </console> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-console-compat2.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-console-compat2.xml new file mode 100644 index 0000000..636e984 --- /dev/null +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-console-compat2.xml @@ -0,0 +1,38 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219100</memory> + <currentMemory unit='KiB'>219100</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'/> + <controller type='ide' index='0'/> + <controller type='pci' index='0' model='pci-root'/> + <controller type='virtio-serial' index='0'/> + <serial type='pty'> + <target port='0'/> + </serial> + <console type='pty'> + <target type='serial' port='0'/> + </console> + <console type='pty'> + <target type='virtio' port='0'/> + </console> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index 53bcc9f..d405e71 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -472,6 +472,7 @@ mymain(void) DO_TEST("serial-spiceport-nospice"); DO_TEST("parallel-tcp"); DO_TEST("console-compat"); + DO_TEST_DIFFERENT("console-compat2"); DO_TEST("console-virtio-many"); DO_TEST("channel-guestfwd"); DO_TEST("channel-virtio"); -- 2.3.6

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[libvirt] [PATCH] build: silence ar warnings on rawhide
by Eric Blake 02 Jun '15

02 Jun '15

Newer binutils 'ar' has added an option 'D' for deterministic builds, and at least on rawhide, this option is enabled by default. But it conflicts with the 'u' optimization where the linker only modifies libraries based on file timestamps, but can result in different library ordering based on which files were touched last. Thus, it results in some noisy compilation, for every CCLD line: CCLD libvirt_driver_qemu_impl.la ar: `u' modifier ignored since `D' is the default (see `U') Upstream automake has decided that defaulting ARFLAGS to 'cru' is no longer beneficial, and that switching the default to 'cr' will both silence the noise and not penalize modern build systems. https://lists.gnu.org/archive/html/automake-patches/2015-06/msg00000.html But rather than wait for newer automake to propagate to all systems that already have newer binutils, we might as well just use the new default ourselves, even on older platforms. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- This is bugging me even more now that Fedora 22 also suffers from the same issue (we've been ignoring it in rawhide for several months now). While it seems trivial, I'd like a review before pushing. configure.ac | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/configure.ac b/configure.ac index 0da3ae8..abf4436 100644 --- a/configure.ac +++ b/configure.ac @@ -25,6 +25,10 @@ AC_CONFIG_MACRO_DIR([m4]) dnl Make automake keep quiet about wildcards & other GNUmake-isms; also keep dnl quiet about the fact that we intentionally cater to automake 1.9 AM_INIT_AUTOMAKE([-Wno-portability -Wno-obsolete tar-ustar subdir-objects]) +dnl older automake's default of ARFLAGS=cru is noisy on newer binutils; +dnl we don't really need the 'u' even in older toolchains. Then there is +dnl older libtool, which spelled it AR_FLAGS +m4_divert_text([DEFAULTS], [: "${ARFLAGS=cr} ${AR_FLAGS=cr}"]) # Maintainer note - comment this line out if you plan to rerun # GNULIB_POSIXCHECK testing to see if libvirt should be using more modules. -- 2.4.2

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[libvirt] [PATCH v4 0/6] virsh: Further improve handling of integer options
by Andrea Bolognani 02 Jun '15

02 Jun '15

As suggested by Michal: now that we have a generic error message for failures related to the parsing of integer options, it makes sense to perform the corresponding check in a single spot instead of replicating it every time vshCommandOpt*() is used. Andrea Bolognani (6): tests: Add a bunch of new tests to virsh-optparse virsh: Use standard error messages in vshCommandOptTimeoutToMs() virsh: Improve vshCommandOptTimeoutToMs() virsh: Make vshCommandOptScaledInt() use vshCommandOpt() virsh: Pass vshControl to all vshCommandOpt*() calls virsh: Move error messages inside vshCommandOpt*() functions tests/vcpupin | 4 +- tests/virsh-optparse | 179 ++++++++++++++++++++++++++++++ tools/virsh-domain-monitor.c | 17 +-- tools/virsh-domain.c | 226 ++++++++++++-------------------------- tools/virsh-host.c | 67 +++--------- tools/virsh-interface.c | 6 +- tools/virsh-network.c | 10 +- tools/virsh-nodedev.c | 4 +- tools/virsh-snapshot.c | 2 +- tools/virsh-volume.c | 26 +---- tools/virsh.c | 252 ++++++++++++++++++++++++++----------------- tools/virsh.h | 66 ++++++------ 12 files changed, 461 insertions(+), 398 deletions(-) -- 2.1.0

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[libvirt] Repository with Parallels SDK sources moved
by Sergey Bronnikov 02 Jun '15

02 Jun '15

Hello, repository with Parallels SDK has been moved from https://github.com/CloudServer/parallels-sdk to https://src.openvz.org/projects/OVZ/repos/libprlsdk/browse. Please update GIT settings. -- OpenVZ survey http://goo.gl/forms/orYmy0SjFB

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