March 2014 - Devel - libvirt List Archives

[libvirt] [for-1.2.3 PATCHv3] gluster: Fix "key" attribute for gluster volumes
by Peter Krempa 01 Apr '14

01 Apr '14

According to our documentation the "key" value has the following meaning: "Providing an identifier for the volume which identifies a single volume." The currently used keys for gluster volumes consist of the gluster volume name and file path. This can't be considered unique as a different storage server can serve a volume with the same name. Unfortunately I wasn't able to figure out a way to retrieve the gluster volume UUID which would avoid the possibility of having two distinct keys identifying a single volume. Use the full URI as the key for the volume to avoid the more critical ambiguity problem and document the possible change to UUID. --- Notes: Version 3: - fix the example too, also state that UUID might be used - repost so we don't have yet another release containing this docs/storage.html.in | 8 +++++--- src/storage/storage_backend_gluster.c | 10 ++++++++-- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/docs/storage.html.in b/docs/storage.html.in index 2706bc5..4bbf378 100644 --- a/docs/storage.html.in +++ b/docs/storage.html.in @@ -711,12 +711,14 @@ correspond to the files that can be found when mounting the gluster volume. The <code>name</code> is the path relative to the effective mount specified for the pool; and - the <code>key</code> is a path including the gluster volume - name and any subdirectory specified by the pool.</p> + the <code>key</code> is a string that identifies a single volume + uniquely. Currently the <code>key</code> attribute consists of the + URI of the volume but it may be changed to an UUID of the volume + in the future.</p> <pre> <volume> <name>myfile</name> - <key>volname/myfile</key> + <key>gluster://localhost/volname/myfile</key> <source> </source> <capacity unit='bytes'>53687091200</capacity> diff --git a/src/storage/storage_backend_gluster.c b/src/storage/storage_backend_gluster.c index fe92f15..337ddf4 100644 --- a/src/storage/storage_backend_gluster.c +++ b/src/storage/storage_backend_gluster.c @@ -187,6 +187,7 @@ virStorageBackendGlusterSetMetadata(virStorageBackendGlusterStatePtr state, const char *name) { int ret = -1; + char *path = NULL; char *tmp; VIR_FREE(vol->key); @@ -201,12 +202,12 @@ virStorageBackendGlusterSetMetadata(virStorageBackendGlusterStatePtr state, goto cleanup; } - if (virAsprintf(&vol->key, "%s%s%s", state->volname, state->dir, + if (virAsprintf(&path, "%s%s%s", state->volname, state->dir, vol->name) < 0) goto cleanup; tmp = state->uri->path; - if (virAsprintf(&state->uri->path, "/%s", vol->key) < 0) { + if (virAsprintf(&state->uri->path, "/%s", path) < 0) { state->uri->path = tmp; goto cleanup; } @@ -218,9 +219,14 @@ virStorageBackendGlusterSetMetadata(virStorageBackendGlusterStatePtr state, VIR_FREE(state->uri->path); state->uri->path = tmp; + /* the path is unique enough to serve as a volume key */ + if (VIR_STRDUP(vol->key, vol->target.path) < 0) + goto cleanup; + ret = 0; cleanup: + VIR_FREE(path); return ret; } -- 1.9.1

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[libvirt] [PATCH] Fix Memory Leak in testMessageArrayRef()
by Nehal J Wani 31 Mar '14

31 Mar '14

While running virdbustest, it was found that valgrind pointed out the following memory leaks: ==9996== 17 (8 direct, 9 indirect) bytes in 1 blocks are definitely lost in loss record 9 of 36 ==9996== at 0x4A069EE: malloc (vg_replace_malloc.c:270) ==9996== by 0x4A06B62: realloc (vg_replace_malloc.c:662) ==9996== by 0x4C6B587: virReallocN (viralloc.c:245) ==9996== by 0x4C6B6AE: virExpandN (viralloc.c:294) ==9996== by 0x4C82B54: virDBusMessageDecodeArgs (virdbus.c:907) ==9996== by 0x4C83463: virDBusMessageDecode (virdbus.c:1141) ==9996== by 0x402C45: testMessageArrayRef (virdbustest.c:273) ==9996== by 0x404E71: virtTestRun (testutils.c:201) ==9996== by 0x401C2D: mymain (virdbustest.c:479) ==9996== by 0x4055ED: virtTestMain (testutils.c:789) ==9996== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==9996== ==9996== 28 (16 direct, 12 indirect) bytes in 1 blocks are definitely lost in loss record 12 of 36 ==9996== at 0x4A06BE0: realloc (vg_replace_malloc.c:662) ==9996== by 0x4C6B587: virReallocN (viralloc.c:245) ==9996== by 0x4C6B6AE: virExpandN (viralloc.c:294) ==9996== by 0x4C82B54: virDBusMessageDecodeArgs (virdbus.c:907) ==9996== by 0x4C83463: virDBusMessageDecode (virdbus.c:1141) ==9996== by 0x402C45: testMessageArrayRef (virdbustest.c:273) ==9996== by 0x404E71: virtTestRun (testutils.c:201) ==9996== by 0x401C2D: mymain (virdbustest.c:479) ==9996== by 0x4055ED: virtTestMain (testutils.c:789) ==9996== by 0x3E6CE1ED1C: (below main) (libc-start.c:226) ==9996== --- tests/virdbustest.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/tests/virdbustest.c b/tests/virdbustest.c index 1870f35..bdb1c24 100644 --- a/tests/virdbustest.c +++ b/tests/virdbustest.c @@ -250,6 +250,7 @@ static int testMessageArrayRef(const void *args ATTRIBUTE_UNUSED) size_t out_nstrv2 = 0; const char *in_str2 = "World"; char *out_str1 = NULL, *out_str2 = NULL; + size_t i = 0; if (!(msg = dbus_message_new_method_call("org.libvirt.test", "/org/libvirt/test", @@ -315,6 +316,12 @@ static int testMessageArrayRef(const void *args ATTRIBUTE_UNUSED) VIR_FREE(out_int32); VIR_FREE(out_str1); VIR_FREE(out_str2); + for (i = 0; i < out_nstrv1; i++) + VIR_FREE(out_strv1[i]); + VIR_FREE(out_strv1); + for (i = 0; i < out_nstrv2; i++) + VIR_FREE(out_strv2[i]); + VIR_FREE(out_strv2); dbus_message_unref(msg); return ret; } -- 1.7.1

2 1

[libvirt] [PATCH 0/4] storage: Fix VolOpen error reporting
by Cole Robinson 31 Mar '14

31 Mar '14

In https://bugzilla.redhat.com/show_bug.cgi?id=1080613 , something is causing StorageVolGetXML to fail, but it's not raising any error message. Code inspection found that most users of VolOpen are susceptible to error reporting issues. The first 3 patches are some code reorganization and cleanups that make it easier to identify the VolOpen callers. Patch 4 fixes up the reporting issue. Cole Robinson (4): storage: Rename UpdateVolInfoFlags to UpdateVolInfo storage: move block format lookup to shared UpdateVolInfo storage: Rename VolOpenCheckMode to VolOpen storage: Always report an error from VolOpen src/storage/storage_backend.c | 234 +++++++++++++++++----------------- src/storage/storage_backend.h | 18 +-- src/storage/storage_backend_disk.c | 3 +- src/storage/storage_backend_fs.c | 28 ++-- src/storage/storage_backend_logical.c | 11 +- src/storage/storage_backend_mpath.c | 36 +----- src/storage/storage_backend_scsi.c | 43 +------ 7 files changed, 159 insertions(+), 214 deletions(-) -- 1.8.5.3

3 7

[libvirt] [PATCH tck 0/6] Fix tests which need a full OS image
by Daniel P. Berrange 31 Mar '14

31 Mar '14

A bunch of tests currently attempt to kickstart a full Fedora OS image install. Everytime I try to update this kickstart to a new version of Fedora it causes no end of pain. Switch the tests over to use Richard Jones' virt-builder command which is part of libguestfs. This makes it trivial to deploy and customize full OS images from pre-built templates. Mike - does Suse include a new enough version of libguestfs to get access to the 'virt-builder' tool yet ? Daniel P. Berrange (6): Add ability to provision full OS using virt-builder Fix path to dnsmasq leases file Add ability to setup NIC when creating guest XML Force destroy guests if graceful shutdown fails Convert nwfilter and domain balloon tests to virtbuilder images Remove obsolete kickstart provisioning helper methods Build.PL | 1 - conf/default.cfg | 25 +++ conf/ks.cfg | 30 ---- lib/Sys/Virt/TCK.pm | 280 +++++++++++++++++++++++++----- lib/Sys/Virt/TCK/DomainBuilder.pm | 20 ++- lib/Sys/Virt/TCK/NetworkHelpers.pm | 140 +-------------- perl-Sys-Virt-TCK.spec.PL | 1 - scripts/domain/110-memory-balloon.t | 10 +- scripts/nwfilter/090-install-image.t | 55 ------ scripts/nwfilter/100-ping-still-working.t | 54 +++--- scripts/nwfilter/210-no-mac-spoofing.t | 81 +++++---- scripts/nwfilter/220-no-ip-spoofing.t | 78 +++++---- scripts/nwfilter/230-no-mac-broadcast.t | 53 +++--- scripts/nwfilter/240-no-arp-spoofing.t | 60 ++++--- scripts/nwfilter/300-vsitype.t | 40 +++-- scripts/nwfilter/nwfilter_concurrent.sh | 4 +- 16 files changed, 493 insertions(+), 439 deletions(-) delete mode 100644 conf/ks.cfg delete mode 100644 scripts/nwfilter/090-install-image.t -- 1.8.5.3

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[libvirt] [PATCH tck] Find ebtables in /sbin or /usr/sbin
by Mike Latimer 31 Mar '14

31 Mar '14

If ebtables binary is not found in /sbin, use /usr/sbin. --- scripts/nwfilter/100-ping-still-working.t | 3 ++- scripts/nwfilter/210-no-mac-spoofing.t | 3 ++- scripts/nwfilter/220-no-ip-spoofing.t | 3 ++- scripts/nwfilter/230-no-mac-broadcast.t | 3 ++- scripts/nwfilter/240-no-arp-spoofing.t | 3 ++- 5 files changed, 10 insertions(+), 5 deletions(-) diff --git a/scripts/nwfilter/100-ping-still-working.t b/scripts/nwfilter/100-ping-still-working.t index 0bfdc00..1105d70 100644 --- a/scripts/nwfilter/100-ping-still-working.t +++ b/scripts/nwfilter/100-ping-still-working.t @@ -64,7 +64,8 @@ my $guestip = get_ip_from_leases($mac); diag "ip is $guestip"; # check ebtables entry -my $ebtable = `/sbin/ebtables -L;/sbin/ebtables -t nat -L`; +my $ebtables = (-e '/sbin/ebtables') ? '/sbin/ebtables' : '/usr/sbin/ebtables'; +my $ebtable = `$ebtables -L;$ebtables -t nat -L`; diag $ebtable; # fixme to include mac adress ok($ebtable =~ "vnet0", "check ebtables entry"); diff --git a/scripts/nwfilter/210-no-mac-spoofing.t b/scripts/nwfilter/210-no-mac-spoofing.t index fb20351..d7c57e6 100644 --- a/scripts/nwfilter/210-no-mac-spoofing.t +++ b/scripts/nwfilter/210-no-mac-spoofing.t @@ -64,7 +64,8 @@ my $guestip = get_ip_from_leases($mac); diag "ip is $guestip"; # check ebtables entry -my $ebtable = `/sbin/ebtables -L;/sbin/ebtables -t nat -L`; +my $ebtables = (-e '/sbin/ebtables') ? '/sbin/ebtables' : '/usr/sbin/ebtables'; +my $ebtable = `$ebtables -L;$ebtables -t nat -L`; diag $ebtable; # ebtables shortens :00: to :0: so we need to do that too $_ = $mac; diff --git a/scripts/nwfilter/220-no-ip-spoofing.t b/scripts/nwfilter/220-no-ip-spoofing.t index 063bb5b..5e8e0d7 100644 --- a/scripts/nwfilter/220-no-ip-spoofing.t +++ b/scripts/nwfilter/220-no-ip-spoofing.t @@ -64,7 +64,8 @@ my $guestip = get_ip_from_leases($mac); diag "ip is $guestip"; # check ebtables entry -my $ebtable = `/sbin/ebtables -L;/sbin/ebtables -t nat -L`; +my $ebtables = (-e '/sbin/ebtables') ? '/sbin/ebtables' : '/usr/sbin/ebtables'; +my $ebtable = `$ebtables -L;$ebtables -t nat -L`; diag $ebtable; # check if IP address is listed ok($ebtable =~ "$guestip", "check ebtables entry"); diff --git a/scripts/nwfilter/230-no-mac-broadcast.t b/scripts/nwfilter/230-no-mac-broadcast.t index 09a758b..a7d3b8e 100644 --- a/scripts/nwfilter/230-no-mac-broadcast.t +++ b/scripts/nwfilter/230-no-mac-broadcast.t @@ -63,7 +63,8 @@ my $guestip = get_ip_from_leases($mac); diag "ip is $guestip"; # check ebtables entry -my $ebtable = `/sbin/ebtables -L;/sbin/ebtables -t nat -L`; +my $ebtables = (-e '/sbin/ebtables') ? '/sbin/ebtables' : '/usr/sbin/ebtables'; +my $ebtable = `$ebtables -L;$ebtables -t nat -L`; diag $ebtable; # ebtables shortens :00: to :0: so we need to do that too $_ = $mac; diff --git a/scripts/nwfilter/240-no-arp-spoofing.t b/scripts/nwfilter/240-no-arp-spoofing.t index c31ea48..596a0ce 100644 --- a/scripts/nwfilter/240-no-arp-spoofing.t +++ b/scripts/nwfilter/240-no-arp-spoofing.t @@ -65,7 +65,8 @@ my $guestip = get_ip_from_leases($mac); diag "ip is $guestip"; # check ebtables entry -my $ebtable = `/sbin/ebtables -L;/sbin/ebtables -t nat -L`; +my $ebtables = (-e '/sbin/ebtables') ? '/sbin/ebtables' : '/usr/sbin/ebtables'; +my $ebtable = `$ebtables -L;$ebtables -t nat -L`; diag $ebtable; # check if IP address is listed ok($ebtable =~ "$guestip", "check ebtables entry"); -- 1.8.4.5

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[libvirt] [PATCH tck] 100-ping-still-working.t: Replace vnet0 with mac address
by Mike Latimer 31 Mar '14

31 Mar '14

Using a statically defined vnet0 may fail if multiple VMs are running on the test machine. Switch to mac address, but replace '00' with '0' to match the output of ebtables. --- scripts/nwfilter/100-ping-still-working.t | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/nwfilter/100-ping-still-working.t b/scripts/nwfilter/100-ping-still-working.t index 1105d70..6c931ff 100644 --- a/scripts/nwfilter/100-ping-still-working.t +++ b/scripts/nwfilter/100-ping-still-working.t @@ -67,8 +67,8 @@ diag "ip is $guestip"; my $ebtables = (-e '/sbin/ebtables') ? '/sbin/ebtables' : '/usr/sbin/ebtables'; my $ebtable = `$ebtables -L;$ebtables -t nat -L`; diag $ebtable; -# fixme to include mac adress -ok($ebtable =~ "vnet0", "check ebtables entry"); +$mac =~ s/00/0/g; +ok($ebtable =~ "$mac", "check ebtables entry"); # ping guest1 my $ping = `ping -c 10 $guestip`; -- 1.8.4.5

1 1

[libvirt] guest band width setting
by Pradeep Kiruvale 31 Mar '14

31 Mar '14

Hi All, I am new to QEMU/libvirt I was starting to learn the libvirt code,I was browsing the code how the guest network bandwidth to be set like we mention <inbound> <outbound> tags in the xml,but where in code exactly these values set to the guest interface. I browsed the code a lot could not find it.Please help to understand how this works. Thanks in advance Pradeep

2 2

[libvirt] [PATCH] virsh: fix 'help event'
by Eric Blake 31 Mar '14

31 Mar '14

'virsh help event' included a summary line "event - (null)" due to a misnamed info field. * tools/virsh-domain.c (info_event): Use correct name. * tools/virsh-network.c (info_network_event): Likewise. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- Deserves to be in 1.2.3 tools/virsh-domain.c | 2 +- tools/virsh-network.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index d9aa4fa..73414f8 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -11030,7 +11030,7 @@ static vshEventCallback vshEventCallbacks[] = { verify(VIR_DOMAIN_EVENT_ID_LAST == ARRAY_CARDINALITY(vshEventCallbacks)); static const vshCmdInfo info_event[] = { - {.name = "event", + {.name = "help", .data = N_("Domain Events") }, {.name = "desc", diff --git a/tools/virsh-network.c b/tools/virsh-network.c index 078a3cf..4b0df62 100644 --- a/tools/virsh-network.c +++ b/tools/virsh-network.c @@ -1180,7 +1180,7 @@ vshEventLifecyclePrint(virConnectPtr conn ATTRIBUTE_UNUSED, } static const vshCmdInfo info_network_event[] = { - {.name = "net-event", + {.name = "help", .data = N_("Network Events") }, {.name = "desc", -- 1.9.0

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[libvirt] [PATCH] Drop dependency on pm-is-supported
by Cédric Bosdonnat 31 Mar '14

31 Mar '14

From: Cédric Bosdonnat <cedric.bosdonnat(a)free.fr> pm-is-supported is the only thing needed in pm-utils, better get rid of it since systemd is heavily used for libvirt. --- src/util/virnodesuspend.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/src/util/virnodesuspend.c b/src/util/virnodesuspend.c index 8088931..9839de2 100644 --- a/src/util/virnodesuspend.c +++ b/src/util/virnodesuspend.c @@ -29,6 +29,8 @@ #include "viralloc.h" #include "virlog.h" #include "virerror.h" +#include "virfile.h" +#include "virstring.h" #define VIR_FROM_THIS VIR_FROM_NONE @@ -263,41 +265,45 @@ int nodeSuspendForDuration(unsigned int target, static int virNodeSuspendSupportsTarget(unsigned int target, bool *supported) { - virCommandPtr cmd; - int status; int ret = -1; + char *buf = NULL; + char **states = NULL; + bool canSuspend = false; + bool canHibernate = false; if (virNodeSuspendInitialize() < 0) return -1; *supported = false; + if (virFileReadAll("/sys/power/state", 1024, &buf) < 0) + goto cleanup; + + states = virStringSplit(buf, " ", 0); + + canSuspend = (virStringArrayHasString(states, "mem") || + virStringArrayHasString(states, "standby")); + canHibernate = virStringArrayHasString(states, "disk"); + switch (target) { case VIR_NODE_SUSPEND_TARGET_MEM: - cmd = virCommandNewArgList("pm-is-supported", "--suspend", NULL); + *supported = canSuspend; break; case VIR_NODE_SUSPEND_TARGET_DISK: - cmd = virCommandNewArgList("pm-is-supported", "--hibernate", NULL); + *supported = canHibernate; break; case VIR_NODE_SUSPEND_TARGET_HYBRID: - cmd = virCommandNewArgList("pm-is-supported", "--suspend-hybrid", NULL); + *supported = canSuspend && canHibernate; break; default: return ret; } - if (virCommandRun(cmd, &status) < 0) - goto cleanup; - - /* - * Check return code of command == 0 for success - * (i.e., the PM capability is supported) - */ - *supported = (status == 0); ret = 0; cleanup: - virCommandFree(cmd); + VIR_FREE(buf); + virStringFreeList(states); return ret; } -- 1.8.4.5

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[libvirt] [PATCH] bhyve: don't leak tap devices on failures
by Roman Bogorodskiy 31 Mar '14

31 Mar '14

On failures, virBhyveProcessStart() does not cleanup network interfaces that could be created by virBhyveProcessBuildBhyveCmd(), which results in a leaked tap device. To fix that, extract network cleanup code to bhyveNetCleanup() and use it in cleanup stage of virBhyveProcessStart(). --- src/bhyve/bhyve_process.c | 34 ++++++++++++++++++++++------------ 1 file changed, 22 insertions(+), 12 deletions(-) diff --git a/src/bhyve/bhyve_process.c b/src/bhyve/bhyve_process.c index b37855e..a557bc5 100644 --- a/src/bhyve/bhyve_process.c +++ b/src/bhyve/bhyve_process.c @@ -63,6 +63,24 @@ bhyveProcessAutoDestroy(virDomainObjPtr vm, return vm; } +static void +bhyveNetCleanup(virDomainObjPtr vm) +{ + size_t i; + + for (i = 0; i < vm->def->nnets; i++) { + virDomainNetDefPtr net = vm->def->nets[i]; + int actualType = virDomainNetGetActualType(net); + + if (actualType == VIR_DOMAIN_NET_TYPE_BRIDGE) { + ignore_value(virNetDevBridgeRemovePort( + virDomainNetGetActualBridgeName(net), + net->ifname)); + ignore_value(virNetDevTapDelete(net->ifname)); + } + } +} + int virBhyveProcessStart(virConnectPtr conn, bhyveConnPtr driver, @@ -167,6 +185,8 @@ virBhyveProcessStart(virConnectPtr conn, ignore_value(virCommandRun(destroy_cmd, NULL)); virCommandFree(destroy_cmd); } + + bhyveNetCleanup(vm); } virCommandFree(load_cmd); @@ -181,7 +201,6 @@ virBhyveProcessStop(bhyveConnPtr driver, virDomainObjPtr vm, virDomainShutoffReason reason ATTRIBUTE_UNUSED) { - size_t i; int ret = -1; virCommandPtr cmd = NULL; @@ -203,17 +222,8 @@ virBhyveProcessStop(bhyveConnPtr driver, vm->def->name, (int)vm->pid); - for (i = 0; i < vm->def->nnets; i++) { - virDomainNetDefPtr net = vm->def->nets[i]; - int actualType = virDomainNetGetActualType(net); - - if (actualType == VIR_DOMAIN_NET_TYPE_BRIDGE) { - ignore_value(virNetDevBridgeRemovePort( - virDomainNetGetActualBridgeName(net), - net->ifname)); - ignore_value(virNetDevTapDelete(net->ifname)); - } - } + /* Cleanup network interfaces */ + bhyveNetCleanup(vm); /* No matter if shutdown was successful or not, we * need to unload the VM */ -- 1.8.4.2

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