March 2014 - Devel - libvirt List Archives

[libvirt] [PATCH 0/4] Expose FSFreeze/FSThaw within the guest as commands
by Tomoki Sekiyama 04 Mar '14

04 Mar '14

Currently FSFreeze and FSThaw are supported by qemu guest agent and they are used internally in snapshot-create command with --quiesce option. However, when users want to utilize the native snapshot feature of storage devices (such as LVM over iSCSI, various enterprise storage systems, etc.), they need to issue fsfreeze command separately from libvirt-driven snapshots. (OpenStack cinder provides these storages' snapshot feature, but it cannot quiesce the guest filesystems automatically for now.) Although virDomainQemuGuestAgent() API could be used for this purpose, it depends too much on specific hypervisor implementation. This patchset adds virDomainFSFreeze()/virDomainFSThaw() APIs and virsh domfsfreeze/domfsthaw commands to enable the users to freeze and thaw domain's filesystems cleanly. The APIs has mountPoint and flags option currently unsupported for future extension, as virDomainFSTrim() API. Duplicated FSFreeze results in error caused by qemu guest agent. --- Tomoki Sekiyama (4): Introduce virDomainFSFreeze() public API remote: Implement virDomainFSFreeze and virDomainFSThaw qemu: Implement virDomainFSFreeze virsh: Expose new virDomainFSFreeze and virDomainFSThaw API include/libvirt/libvirt.h.in | 8 ++ src/access/viraccessperm.c | 2 - src/access/viraccessperm.h | 6 ++ src/driver.h | 12 ++++ src/libvirt.c | 92 +++++++++++++++++++++++++++ src/libvirt_public.syms | 6 ++ src/qemu/qemu_driver.c | 142 ++++++++++++++++++++++++++++++++++++++++++ src/remote/remote_driver.c | 2 + src/remote/remote_protocol.x | 26 +++++++- src/remote_protocol-structs | 12 ++++ src/rpc/gendispatch.pl | 2 + tools/virsh-domain.c | 108 ++++++++++++++++++++++++++++++++ tools/virsh.pod | 17 +++++ 13 files changed, 433 insertions(+), 2 deletions(-)

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[libvirt] [PATCH 0/2] Properly error out on unsupported settings
by Martin Kletzander 04 Mar '14

04 Mar '14

<BLURB/> Martin Kletzander (2): tests: Create privileged driver config in qemuxml2argvtest qemu: Reject unsupported tuning in session mode src/qemu/qemu_command.c | 32 +++++++++++++++ src/qemu/qemu_driver.c | 103 ++++++++++++++++++++++++++++++++++++++++++++++- tests/qemuxml2argvtest.c | 2 +- 3 files changed, 135 insertions(+), 2 deletions(-) -- 1.9.0

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[libvirt] [PATCH v2 0/2] Introduce max_anonymous_clients
by Michal Privoznik 04 Mar '14

04 Mar '14

https://bugzilla.redhat.com/show_bug.cgi?id=981729 So far we can limit how many clients are connected, how many are waiting in accept() line but we could not control the count of accepted but not authenticated yet. Michal Privoznik (2): virNetServer: Introduce unauth clients counter daemon: Introduce max_anonymous_clients daemon/libvirtd-config.c | 1 + daemon/libvirtd-config.h | 1 + daemon/libvirtd.aug | 1 + daemon/libvirtd.c | 1 + daemon/libvirtd.conf | 4 +++ daemon/remote.c | 21 ++++++----- daemon/test_libvirtd.aug.in | 1 + src/locking/lock_daemon.c | 3 +- src/lxc/lxc_controller.c | 2 +- src/rpc/virnetserver.c | 88 ++++++++++++++++++++++++++++++++++++++++++--- src/rpc/virnetserver.h | 3 ++ 11 files changed, 110 insertions(+), 16 deletions(-) -- 1.9.0

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[libvirt] [PATCH] Fix memory leak in virDomainSnapshotDiskDefClear()
by Nehal J Wani 04 Mar '14

04 Mar '14

While running domainsnapshotxml2xmltest, it was found that valgrind pointed out the following memory leaks: ==32176== 42 (32 direct, 10 indirect) bytes in 1 blocks are definitely lost in loss record 42 of 66 ==32176== at 0x4A069EE: malloc (vg_replace_malloc.c:270) ==32176== by 0x4A06B62: realloc (vg_replace_malloc.c:662) ==32176== by 0x4C65A07: virReallocN (viralloc.c:243) ==32176== by 0x4C65B2E: virExpandN (viralloc.c:292) ==32176== by 0x4C65E30: virInsertElementsN (viralloc.c:434) ==32176== by 0x4CD71F3: virDomainDiskSourceDefParse (domain_conf.c:5078) ==32176== by 0x4CF6EF4: virDomainSnapshotDefParseNode (snapshot_conf.c:151) ==32176== by 0x4CF7314: virDomainSnapshotDefParseString (snapshot_conf.c:410) ==32176== by 0x41FB8D: testCompareXMLToXMLHelper (domainsnapshotxml2xmltest.c:100) ==32176== by 0x420FD1: virtTestRun (testutils.c:199) ==32176== by 0x41F859: mymain (domainsnapshotxml2xmltest.c:222) ==32176== by 0x42174D: virtTestMain (testutils.c:782) ==32176== ==32176== 128 (96 direct, 32 indirect) bytes in 1 blocks are definitely lost in loss record 51 of 66 ==32176== at 0x4A06BE0: realloc (vg_replace_malloc.c:662) ==32176== by 0x4C65A07: virReallocN (viralloc.c:243) ==32176== by 0x4C65B2E: virExpandN (viralloc.c:292) ==32176== by 0x4C65E30: virInsertElementsN (viralloc.c:434) ==32176== by 0x4CD71F3: virDomainDiskSourceDefParse (domain_conf.c:5078) ==32176== by 0x4CF6EF4: virDomainSnapshotDefParseNode (snapshot_conf.c:151) ==32176== by 0x4CF7314: virDomainSnapshotDefParseString (snapshot_conf.c:410) ==32176== by 0x41FB8D: testCompareXMLToXMLHelper (domainsnapshotxml2xmltest.c:100) ==32176== by 0x420FD1: virtTestRun (testutils.c:199) ==32176== by 0x41F859: mymain (domainsnapshotxml2xmltest.c:222) ==32176== by 0x42174D: virtTestMain (testutils.c:782) ==32176== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==32176== --- src/conf/snapshot_conf.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c index 12b0930..475525f 100644 --- a/src/conf/snapshot_conf.c +++ b/src/conf/snapshot_conf.c @@ -82,6 +82,7 @@ virDomainSnapshotDiskDefClear(virDomainSnapshotDiskDefPtr disk) { VIR_FREE(disk->name); VIR_FREE(disk->file); + virDomainDiskHostDefFree(disk->nhosts, disk->hosts); } void virDomainSnapshotDefFree(virDomainSnapshotDefPtr def) -- 1.7.1

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[libvirt] [PATCH v2 0/5] AppArmor support for lxc containers
by Cédric Bosdonnat 04 Mar '14

04 Mar '14

This is a repost of the previous patch series, with the following changes: * Dropped the patch setting "none" security driver as default in lxc.conf * Add a patch to implement support for "none" type with apparmor security model. Cédric Bosdonnat (5): LXC driver: generate apparmor profiles for guests Make sure apparmor is started before libvirtd apparmor: add debug traces when changing profile. add support for apparmor in lxc-enter-namespace apparmor: handle "none" type daemon/libvirtd.service.in | 1 + examples/apparmor/Makefile.am | 2 ++ examples/apparmor/TEMPLATE | 2 +- examples/apparmor/libvirt-lxc | 17 ++++++++++ src/libvirt-lxc.c | 13 ++++++++ src/security/security_apparmor.c | 24 +++++++++++--- src/security/virt-aa-helper.c | 69 +++++++++++++++++++++++++++++----------- 7 files changed, 103 insertions(+), 25 deletions(-) create mode 100644 examples/apparmor/libvirt-lxc -- 1.8.5.2

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[libvirt] [PATCH] qemu: monitor: Fix error message and comment when getting cpu info
by Peter Krempa 04 Mar '14

04 Mar '14

In qemuMonitorJSONExtractCPUInfo an error message hinted on missing character device data which is wrong. Also a comment states that only qemu-kvm tree includes the thread_id field. This is no longer true. --- src/qemu/qemu_monitor_json.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 5e825ac..9a5b812 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -1220,13 +1220,13 @@ qemuMonitorJSONExtractCPUInfo(virJSONValuePtr reply, int thread; if (!entry) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("character device information was missing array element")); + _("cpu information was missing an array element")); goto cleanup; } if (virJSONValueObjectGetNumberInt(entry, "thread_id", &thread) < 0) { - /* Only qemu-kvm tree includs thread_id, so treat this as - non-fatal, simply returning no data */ + /* Some older qemu versions don't report the thread_id, + * so treat this as non-fatal, simply returning no data */ ret = 0; goto cleanup; } -- 1.9.0

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[libvirt] [PATCH] qemu: snapshot: Use better check when reverting external snapshots
by Peter Krempa 04 Mar '14

04 Mar '14

https://bugzilla.redhat.com/show_bug.cgi?id=1071264 Reverting of external snapshots is not supported currently. The check that is present doesn't properly check for all aspects that make a snapshot external. Use virDomainSnapshotIsExternal() to do the check. --- src/qemu/qemu_driver.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index e04a328..4fbcb27 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -13921,12 +13921,13 @@ static int qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot, "to revert to inactive snapshot")); goto cleanup; } - if (snap->def->state == VIR_DOMAIN_DISK_SNAPSHOT) { + + if (virDomainSnapshotIsExternal(snap)) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("revert to external disk snapshot not supported " - "yet")); + _("revert to external snapshot not supported yet")); goto cleanup; } + if (!(flags & VIR_DOMAIN_SNAPSHOT_REVERT_FORCE)) { if (!snap->def->dom) { virReportError(VIR_ERR_SNAPSHOT_REVERT_RISKY, -- 1.9.0

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[libvirt] [PATCH] qemuBuildNicDevStr: Adapt to new advisory on multiqueue
by Michal Privoznik 04 Mar '14

04 Mar '14

As I did previously in 4f588a1b46, libvirt needs to set virtio vectors. Previously, we were advised to use vectors=N, where N = 2 * (number of queues) + 1 However, just recently this advisory has changed on the Multiquue wiki page [1] to: N = 2 * (number of queues) + 2 1: http://www.linux-kvm.org/page/Multiqueue#Enable_MQ_feature Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- Notes: I've had some discussion with qemu developers that qemu is the best place to compute sane default [1]. And they agreed with me. However, until they will do so, libvirt should pass the correct value to make the whole feature work correctly. 1: https://bugzilla.redhat.com/show_bug.cgi?id=1005626 src/qemu/qemu_command.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index ff0b2d5..18d0a64 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -5036,8 +5036,8 @@ qemuBuildNicDevStr(virDomainDefPtr def, } if (usingVirtio && vhostfdSize > 1) { /* As advised at http://www.linux-kvm.org/page/Multiqueue - * we should add vectors=2*N+1 where N is the vhostfdSize */ - virBufferAsprintf(&buf, ",mq=on,vectors=%d", 2 * vhostfdSize + 1); + * we should add vectors=2*N+2 where N is the vhostfdSize */ + virBufferAsprintf(&buf, ",mq=on,vectors=%d", 2 * vhostfdSize + 2); } if (vlan == -1) virBufferAsprintf(&buf, ",netdev=host%s", net->info.alias); -- 1.9.0

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[libvirt] [PATCHv2 0/2] Check if systemd is the init before creating machines
by Ján Tomko 04 Mar '14

04 Mar '14

v1: https://www.redhat.com/archives/libvir-list/2014-February/msg01662.html v2: check if systemd1 is registered in ListNames instead of reading /proc/1/comm actually pass 'make check' in all three cases: * no systemd * systemd installed * systemd running Ján Tomko (2): Split out most of virDBusIsServiceEnabled Check if systemd is running before creating machines src/util/virdbus.c | 47 +++++++++++++++++++++++++++++++++++++---------- src/util/virdbus.h | 1 + src/util/virsystemd.c | 6 ++++++ tests/virsystemdmock.c | 24 +++++++++++++++++++++++- tests/virsystemdtest.c | 37 +++++++++++++++++++++++++++++++++++++ 5 files changed, 104 insertions(+), 11 deletions(-) -- 1.8.3.2

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[libvirt] [PATCH] Don't always skip virportallocatortest
by Ján Tomko 04 Mar '14

04 Mar '14

Include dlfcn.h before checking if RTLD_NEXT is defined --- tests/virportallocatortest.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tests/virportallocatortest.c b/tests/virportallocatortest.c index 5a93dad..fd48c11 100644 --- a/tests/virportallocatortest.c +++ b/tests/virportallocatortest.c @@ -23,8 +23,11 @@ #include "virfile.h" #include "testutils.h" -#if HAVE_DLFCN_H && defined(RTLD_NEXT) +#if HAVE_DLFCN_H +# include <dlfcn.h> +#endif +#if defined(RTLD_NEXT) # ifdef MOCK_HELPER # include "internal.h" # include <sys/socket.h> @@ -32,7 +35,6 @@ # include <arpa/inet.h> # include <netinet/in.h> # include <stdio.h> -# include <dlfcn.h> static bool host_has_ipv6 = false; static int (*realsocket)(int domain, int type, int protocol); @@ -265,7 +267,7 @@ mymain(void) VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/libvirportallocatormock.so") # endif -#else /* ! HAVE_DLFCN_H */ +#else /* ! defined(RTLD_NEXT) */ int main(void) { -- 1.8.3.2

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