September 2018 - Devel - libvirt List Archives

[libvirt] [PATCH 0/6] Introduce VIR_AUTOCLOSE macro for closing fd automatically
by Shi Lei 12 Sep '18

12 Sep '18

This series introduce VIR_AUTOCLOSE macro which can force close fd of the file automatically when the fd goes out of scope. It's used to eliminate VIR_FORCE_CLOSE in cleanup sections. The new macro consults VIR_AUTOFREE and VIR_AUTOPTR. Shi Lei (6): util: file: introduce VIR_AUTOCLOSE macro to close fd of the file automatically util: file: use VIR_AUTOCLOSE instead of VIR_FORCE_CLOSE in cleanup sections util: netdevbridge: use VIR_AUTOCLOSE instead of VIR_FORCE_CLOSE in cleanup sections util: netdev: use VIR_AUTOCLOSE instead of VIR_FORCE_CLOSE in cleanup sections phyp: driver: use VIR_AUTOCLOSE instead of VIR_FORCE_CLOSE in cleanup sections uml: conf: use VIR_AUTOCLOSE instead of VIR_FORCE_CLOSE in cleanup sections src/phyp/phyp_driver.c | 29 ++--- src/uml/uml_conf.c | 13 +- src/util/virfile.c | 21 +-- src/util/virfile.h | 20 ++- src/util/virnetdev.c | 253 +++++++++++++------------------------ src/util/virnetdevbridge.c | 120 ++++++------------ 6 files changed, 163 insertions(+), 293 deletions(-) -- 2.17.1

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[libvirt] [PATCH 0/3] Allow inputvol when creating vol from inputvol to be encrypted
by John Ferlan 12 Sep '18

12 Sep '18

https://bugzilla.redhat.com/show_bug.cgi?id=1613737 Details in the patches (and even more in the bz). John Ferlan (3): storage: Remove secretPath from _virStorageBackendQemuImgInfo storage: Allow for inputvol to have any format for encryption storage: Allow inputvol to be encrypted src/storage/storage_util.c | 79 ++++++++++++++++--- src/storage/storage_util.h | 1 + .../luks-convert-encrypt.argv | 11 +++ .../luks-convert-encrypt2fileqcow2.argv | 7 ++ .../luks-convert-encrypt2fileraw.argv | 7 ++ .../luks-convert-qcow2.argv | 9 +++ tests/storagevolxml2argvtest.c | 19 ++++- tests/storagevolxml2xmlin/vol-encrypt1.xml | 21 +++++ tests/storagevolxml2xmlin/vol-encrypt2.xml | 21 +++++ tests/storagevolxml2xmlin/vol-file-qcow2.xml | 21 +++++ 10 files changed, 184 insertions(+), 12 deletions(-) create mode 100644 tests/storagevolxml2argvdata/luks-convert-encrypt.argv create mode 100644 tests/storagevolxml2argvdata/luks-convert-encrypt2fileqcow2.argv create mode 100644 tests/storagevolxml2argvdata/luks-convert-encrypt2fileraw.argv create mode 100644 tests/storagevolxml2argvdata/luks-convert-qcow2.argv create mode 100644 tests/storagevolxml2xmlin/vol-encrypt1.xml create mode 100644 tests/storagevolxml2xmlin/vol-encrypt2.xml create mode 100644 tests/storagevolxml2xmlin/vol-file-qcow2.xml -- 2.17.1

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[libvirt] Fw: Re: [PATCH 4/6] util: netdev: use VIR_AUTOCLOSE instead of VIR_FORCE_CLOSE
by Shi Lei 12 Sep '18

12 Sep '18

On 2018-09-12 at 16:25, Shi Lei wrote: On 2018-09-12 at 15:21, Erik Skultety wrote: >On Tue, Sep 11, 2018 at 11:37:45PM +0800, Shi Lei wrote: >> On 2018-09-11 at 20:44, Erik Skultety wrote: >> >On Mon, Sep 10, 2018 at 11:47:53AM +0800, Shi Lei wrote: >> >> By making use of GNU C's cleanup attribute handled by the VIR_AUTOCLOSE macro, >> >> many of the VIR_FORCE_CLOSE calls can be dropped, which in turn leads to >> >> getting rid of many of our cleanup sections. >> >> >> >> Signed-off-by: Shi Lei <shi_lei(a)massclouds.com> >> >> --- >> >> static int >> >> @@ -909,9 +867,9 @@ char *virNetDevGetName(int ifindex) >> >> #if defined(SIOCGIFINDEX) && defined(HAVE_STRUCT_IFREQ) >> >> int virNetDevGetIndex(const char *ifname, int *ifindex) >> >> { >> >> - int ret = -1; >> >> struct ifreq ifreq; >> >> - int fd = socket(VIR_NETDEV_FAMILY, SOCK_DGRAM, 0); >> >> + VIR_AUTOCLOSE(fd); >> >> + socket(VIR_NETDEV_FAMILY, SOCK_DGRAM, 0); >> > >> >^this could not potentially work... >> > >> >Erik >> >> Sorry! I'm too careless. >> >> I think that a new syntax-check rule might make sense. >> This rule checks below: >> >> type foo(a0, a1 ...); >> >> [type] var = foo(a0, a1, ...); /* It's OK */ >> ignore_value(foo(a0, a1, ...)); /* It's OK */ >> >> foo(a0, a1, ...); /* Report this usage */ > >but this would go away with the syntax-check rule you proposed in you response >to the first patch? If not, then would you be more specific to help me >understand the problem more? > >Thanks, >Erik Sorry! I was muddle-headed last night. It is not the syntax-check rule in my response to the first patch. This is another rule and I wanted to introduce it to avoid some faults then. Today I find that it is not easy as I thought. Please ignore it ... :-) Shi Lei > >> >> And it takes effect before compilation and even it's in the inactive >> side of the #if-#else conditons. >> >> It would not check macros since their name are upper case and >> we don't care for the function as condition in if-else statement. >> >> How about it? >> And I can try it if it's a bit helpful ... >> >> Shi Lei >> >> >> >> -- >> libvir-list mailing list >> libvir-list(a)redhat.com >> https://www.redhat.com/mailman/listinfo/libvir-list

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[libvirt] [PATCHv3 0/3] Add virNetlinkNewLink helper for simplifying virNetDev*Create
by Shi Lei 12 Sep '18

12 Sep '18

v2 here: https://www.redhat.com/archives/libvir-list/2018-September/msg00131.html Diff from V2: This series remove all unrelated changes. Those changes would be standalone patches. Shi Lei (3): util: netlink: Introduce virNetlinkNewLink helper util: netlink: Add wrapper macros to make virNetlinkNewLink more readable util: netlink: Using virNetlinkNewLink to simplify virNetDev*Create src/libvirt_private.syms | 1 + src/util/virnetdevbridge.c | 73 +++--------------------- src/util/virnetdevmacvlan.c | 110 +++++------------------------------- src/util/virnetlink.c | 104 ++++++++++++++++++++++++++++++++++ src/util/virnetlink.h | 43 ++++++++++++++ 5 files changed, 172 insertions(+), 159 deletions(-) -- 2.17.1

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[libvirt] [PATCH] numa: fix unsafe access to numa_nodes_ptr
by Wang Yechao 12 Sep '18

12 Sep '18

numa_nodes_ptr is a global variable in libnuma.so. It is been freed after main thread exits. If we have many running vms, restart the libvirtd service continuously at intervals of a few seconds, the main thread may exit before qemuProcessReconnect thread, and a segfault error occurs. Backstrace as follows: 0 0x00007f40e3d2dd72 in numa_bitmask_isbitset () from /lib64/libnuma.so.1 1 0x00007f40e4d14c55 in virNumaNodeIsAvailable (node=node@entry=0) at util/virnuma.c:396 2 0x00007f40e4d16010 in virNumaGetHostMemoryNodeset () at util/virnuma.c:1011 3 0x00007f40b94ced90 in qemuRestoreCgroupState (vm=0x7f407c39df00, vm=0x7f407c39df00) at qemu/qemu_cgroup.c:877 4 qemuConnectCgroup (driver=driver@entry=0x7f407c21fe80, vm=0x7f407c39df00) at qemu/qemu_cgroup.c:969 5 0x00007f40b94eef93 in qemuProcessReconnect (opaque=<optimized out>) at qemu/qemu_process.c:3531 6 0x00007f40e4d34bd2 in virThreadHelper (data=<optimized out>) at util/virthread.c:206 7 0x00007f40e214ee25 in start_thread () from /lib64/libpthread.so.0 8 0x00007f40e1e7c36d in clone () from /lib64/libc.so.6 Signed-off-by: Wang Yechao <wang.yechao255(a)zte.com.cn> --- src/util/virnuma.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/util/virnuma.c b/src/util/virnuma.c index 67e6c86..502b1d5 100644 --- a/src/util/virnuma.c +++ b/src/util/virnuma.c @@ -381,7 +381,10 @@ virNumaGetMaxCPUs(void) bool virNumaNodeIsAvailable(int node) { - return numa_bitmask_isbitset(numa_nodes_ptr, node); + if (numa_nodes_ptr) + return numa_bitmask_isbitset(numa_nodes_ptr, node); + else + return false; } -- 1.8.3.1

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[libvirt] [PATCH 0/2] Fix issues in qemuARPGetInterfaces and virArpTableGet
by Lin Ma 12 Sep '18

12 Sep '18

Lin Ma (2): qemu: Remove network type limitation for qemuARPGetInterfaces virarptable: Return a virArpTablePtr when the nlmsghdr for loop is over src/qemu/qemu_driver.c | 3 --- src/util/virarptable.c | 2 ++ 2 files changed, 2 insertions(+), 3 deletions(-) -- 2.16.2

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Re: [libvirt] [PATCH v3 4/4] block/rbd: add deprecation documenation for filename keyvalue pairs
by Eric Blake 11 Sep '18

11 Sep '18

[MAINTAINERS says libvir-list should have been cc'd; not sure why that didn't happen] On 9/11/18 4:34 PM, Jeff Cody wrote: > Signed-off-by: Jeff Cody <jcody(a)redhat.com> In the subject: s/documenation/documentation/ > --- > qemu-deprecated.texi | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi > index 1b9c007f12..4df8ac442d 100644 > --- a/qemu-deprecated.texi > +++ b/qemu-deprecated.texi > @@ -190,6 +190,13 @@ used instead. > In order to prevent QEMU from automatically opening an image's backing > chain, use ``"backing": null'' instead. > > +@subsubsection "rbd keyvalue pair encoded filenames": "" (since 3.1.0) > + > +Options for ``rbd'' should be specified according to its runtime options, > +like other block drivers. Legacy parsing of keyvalue pair encoded > +filenames is useful to open images with the old format for backing files; > +These image files should be updated to use the current format. Can we give an example? Cribbing from patch 3, an example might look like changing: json:{"file.driver":"rbd", "file.filename":"rbd:rbd/name"} into: json:{"file.driver":"rbd", "file.pool":"rbd", "file.image":"name"} I'll let Peter or John comment on whether libvirt's RBD pool handler is impacted by this deprecation, but it seems reasonable to me. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org

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[libvirt] [PATCH] qemu_domain: Drop namespace check from top level functions
by Michal Privoznik 11 Sep '18

11 Sep '18

In some cases we are checking if the mount namespace is enabled at two places: one is at the beginning of exported function (e.g. qemuDomainNamespaceSetupDisk()) and the other is at the beginning of qemuDomainNamespaceMknodPaths() which is called from the former function anyway. Then we have some other functions which rely on the later check solely. In order to compensate for possibly needles function call, qemuDomainNamespaceMknodPaths() returns early if @npaths is zero. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- src/qemu/qemu_domain.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 5329899b13..15325aa4c1 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -12428,7 +12428,8 @@ qemuDomainNamespaceMknodPaths(virDomainObjPtr vm, int ret = -1; size_t i; - if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT)) + if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT) || + !npaths) return 0; cfg = virQEMUDriverGetConfig(driver); @@ -12521,9 +12522,6 @@ qemuDomainNamespaceSetupDisk(virDomainObjPtr vm, char *dmPath = NULL; int ret = -1; - if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT)) - return 0; - for (next = src; virStorageSourceIsBacking(next); next = next->backingStore) { if (virStorageSourceIsEmpty(next) || !virStorageSourceIsLocalStorage(next)) { @@ -12574,9 +12572,6 @@ qemuDomainNamespaceSetupHostdev(virDomainObjPtr vm, char **paths = NULL; size_t i, npaths = 0; - if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT)) - return 0; - if (qemuDomainGetHostdevPath(NULL, hostdev, false, &npaths, &paths, NULL) < 0) goto cleanup; @@ -12600,9 +12595,6 @@ qemuDomainNamespaceTeardownHostdev(virDomainObjPtr vm, char **paths = NULL; size_t i, npaths = 0; - if (!qemuDomainNamespaceEnabled(vm, QEMU_DOMAIN_NS_MOUNT)) - return 0; - if (qemuDomainGetHostdevPath(vm->def, hostdev, true, &npaths, &paths, NULL) < 0) goto cleanup; -- 2.16.4

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[libvirt] Terminal input “udevadm trigger” command,then produce “nl_recv returned with error:No buffer space available”
by xiajidong＠cmss.chinamobile.com 11 Sep '18

11 Sep '18

Dear libvirt experts， I have add some patch as follow.this two patch add buffer size to avoid to produce “nl_recv returned with error:No buffer space available” 1. libvirt-nodedev-Increase-the-netlink-socket-buffer-size-to-t.patch 2. libvirt-util-increase-libnl-buffer-size.patch but as I set some configuration in /etc/libvirt/libvitd.conf as follows # Logging level: 4 errors, 3 warnings, 2 information, 1 debug log_level =2 # Multiple outputs can be defined, they just need to be separated by spaces. # e.g. to log all warnings and errors to syslog under the libvirtd ident: log_outputs="2:syslog:libvirtd" when I input “udevadm trigger” command [root@localhost ~]# vi /etc/libvirt/libvirtd.conf [root@localhost ~]# systemctl restart libvirtd [root@localhost ~]# udevadm trigger [root@localhost ~]# udevadm trigger [root@localhost ~]# udevadm trigger [root@localhost ~]# then will produce “nl_recv returned with error:No buffer space available” [root@localhost ~]# tail -f /var/log/messages | grep buffer Sep 2 22:44:00 localhost libvirtd: 4004: error : virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available Sep 2 23:11:33 localhost libvirtd: 4004: error : virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available Sep 2 23:11:45 localhost libvirtd: 4004: error : virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available So my question is: When input “udevadm trigger” in terminal, if setting log_level and log_outputs="2:syslog:libvirtd",how to avoid to produce “error virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available” log information? I am looking forward to your reply. _____ Best Regards, Jidong Xia China Mobile (Suzhou) Software Technology Company.cloud computing product department Tel: (+86) 18896726087 E-Mail：xiajidong(a)cmss.chinamobile.com <mailto:xiajidong@cmss.chinamobile.com>

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[libvirt] [PATCH] test: Remove possible infinite loop in virnetsockettest
by John Ferlan 11 Sep '18

11 Sep '18

Commit 39015a6f3 modified the test to be more reliable/realistic, but without checking the return status of virEventRunDefaultImpl it's possible that the test could run infinitely. Found by Coverity Signed-off-by: John Ferlan <jferlan(a)redhat.com> --- tests/virnetsockettest.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/tests/virnetsockettest.c b/tests/virnetsockettest.c index cccb90d0be..490f720fd0 100644 --- a/tests/virnetsockettest.c +++ b/tests/virnetsockettest.c @@ -243,8 +243,13 @@ testSocketAccept(const void *opaque) &cdata) < 0) goto cleanup; - while (rsock == NULL) - virEventRunDefaultImpl(); + while (rsock == NULL) { + if (virEventRunDefaultImpl() < 0) { + VIR_WARN("Failed to run event loop: %s\n", + virGetLastErrorMessage()); + break; + } + } for (i = 0; i < nlsock; i++) { if (lsock[i] == rsock) { -- 2.17.1

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