April 2013 - Devel - libvirt List Archives

[libvirt] libvirt libxl driver leaking libxl_event's?
by Ian Campbell 12 Apr '13

12 Apr '13

Hi Jim, I don't see any calls to libxl_event_dispose in libvirt.git, libxl_event.h says in relation to the event_occurs callback: * event becomes owned by the application and must be freed, either * by event_occurs or later. so does this mean the memory referenced by event is leaked by libxlEventHandler? libxl_event only contains dynamic allocations for LIBXL_EVENT_TYPE_DISK_EJECT which you don't seem to register for so the issue is probably benign but worth noting I think. Ian.

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[libvirt] [libvirt-designer] Fix 'be find' typo in error message
by Christophe Fergeau 12 Apr '13

12 Apr '13

--- Pushed under the trivial rule. Christophe examples/virtxml.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/examples/virtxml.c b/examples/virtxml.c index 49a7b4e..20aa621 100644 --- a/examples/virtxml.c +++ b/examples/virtxml.c @@ -547,7 +547,7 @@ main(int argc, char *argv[]) } if (!os) { - print_error("Operating system could not be find or guessed"); + print_error("Operating system could not be found or guessed"); goto cleanup; } -- 1.8.1.4

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[libvirt] [RFC] Usage about 'virsh vol-wipe vol_name'
by harryxiyou 12 Apr '13

12 Apr '13

Hi all, I am not very clear about the usage of ‘virsh vol-wipe vol_name’. I think if 'virsh vol-wipe vol_name' can just wipe all the datas in this volume and it is similar as we format a volume which the datas would be wiped, right? After this wipe, we can use this volume like a new one. However, if users just want to wipe portions data of this volume, which command(interface) of libvirt could finish? -- Thanks Harry Wei

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Re: [libvirt] fail to convert qemu xml to args with libvirt-1.0.4: An error occurred, but the cause is unknown
by Yin Olivia-R63875 12 Apr '13

12 Apr '13

Hi Daniel, I also tried libvirt-1.0.4 on my X86 machine. user@x86:~ $ uname -a Linux 2.6.32-33-server #70-Ubuntu SMP Thu Jul 7 22:28:30 UTC 2011 x86_64 GNU/Linux user@x86:~ $ which virsh /usr/local/bin/virsh user@x86:~ $ /usr/local/bin/virsh --version 1.0.4 user@x86:~ $ cd libvirt-1.0.4/tests/qemuxml2argvdata user@x86:~/libvirt-1.0.4/tests/qemuxml2argvdata $ virsh domxml-to-native qemu-argv qemuxml2argv-disk-virtio.xml >1.dom error：An error occurred, but the cause is unknown Best Regards, Olivia > -----Original Message----- > From: Yin Olivia-R63875 > Sent: Thursday, April 11, 2013 10:18 AM > To: 'Daniel P. Berrange' > Cc: 'libvirt-users(a)redhat.com'; 'libvir-list(a)redhat.com' > Subject: RE: fail to convert qemu xml to args with libvirt-1.0.4: An error > occurred, but the cause is unknown > > Hi Daniel, > > Just Ping. > Did you ever successfully convert QEMU xml file to argv on other platforms? > > Best Regards, > Olivia > > > -----Original Message----- > > From: Yin Olivia-R63875 > > Sent: Tuesday, April 09, 2013 1:22 PM > > To: 'libvir-list(a)redhat.com' > > Cc: 'libvirt-users(a)redhat.com' > > Subject: fail to convert qemu xml to args with libvirt-1.0.4: An error > > occurred, but the cause is unknown > > > > Hi, > > > > I used to convert qemu XML to args with libvirt-1.0.3. > > But it failed to convert with libvirt-1.0.4. > > > > # virsh domxml-to-native qemu-argv test.xml >test.sh > > error: An error occurred, but the cause is unknown > > > > > > Comparing the debug file as below: > > 1) lbvirt-1.0.3 > > <cut> > > 2013-04-09 03:23:47.296+0000: 2669: debug : > > virEventPollInterruptLocked:716 : Interrupting > > 2013-04-09 03:23:47.296+0000: 2669: debug : virNetClientIO:1807 : All > > done with our call head=(nil) call=0x100871c0 rv=0 > > 2013-04-09 03:23:47.297+0000: 2670: debug : virEventPollRunOnce:640 : > > Poll got 1 event(s) > > 2013-04-09 03:23:47.297+0000: 2670: debug : > > virEventPollDispatchTimeouts:425 : Dispatch 0 > > 2013-04-09 03:23:47.297+0000: 2669: debug : virNetMessageFree:73 : > > msg=0x10087500 nfds=0 cb=(nil) > > 2013-04-09 03:23:47.297+0000: 2670: debug : > > virEventPollDispatchHandles:470 : Dispatch 1 > > 2013-04-09 03:23:47.297+0000: 2670: debug : > > virEventPollDispatchHandles:484 : i=0 w=1 > > 2013-04-09 03:23:47.297+0000: 2669: debug : virConnectClose:1483 : > > conn=0x100878b8 <cut> > > > > 2) libvirt-1.0.4 > > <cut> > > 2013-04-09 03:07:58.012+0000: 2834: debug : > > virEventPollInterruptLocked:716 : Interrupting > > 2013-04-09 03:07:58.012+0000: 2834: debug : virNetClientIO:1810 : All > > done with our call head=(nil) call=0x10089db8 rv=0 > > 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollRunOnce:640 : > > Poll got 1 event(s) > > 2013-04-09 03:07:58.012+0000: 2835: debug : > > virEventPollDispatchTimeouts:425 : Dispatch 0 > > 2013-04-09 03:07:58.012+0000: 2834: error : > > virNetClientProgramDispatchError:175 : An error occurred, but the > > cause is unknown > > 2013-04-09 03:07:58.012+0000: 2835: debug : > > virEventPollDispatchHandles:470 : Dispatch 1 > > 2013-04-09 03:07:58.012+0000: 2834: debug : virNetMessageFree:73 : > > msg=0x1008a0f8 nfds=0 cb=(nil) > > 2013-04-09 03:07:58.012+0000: 2835: debug : > > virEventPollDispatchHandles:484 : i=0 w=1 > > 2013-04-09 03:07:58.012+0000: 2835: debug : > > virEventPollDispatchHandles:498 : EVENT_POLL_DISPATCH_HANDLE: watch=1 > > events=1 > > 2013-04-09 03:07:58.012+0000: 2835: debug : > > virEventPollCleanupTimeouts:516 : Cleanup 0 > > 2013-04-09 03:07:58.013+0000: 2835: debug : > > virEventPollCleanupTimeouts:552 : Found 0 out of 0 timeout slots used, > > releasing 0 > > 2013-04-09 03:07:58.013+0000: 2835: debug : > virEventPollCleanupHandles:564 : > > Cleanup 2 > > 2013-04-09 03:07:58.013+0000: 2834: debug : virConnectClose:1483 : > > conn=0x1008a4b0 <cut> > > > > > > How can I debug this cause unknown error? > > > > Best Regards, > > Olivia

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[libvirt] [RFC] virCommandRun return error number
by harryxiyou 12 Apr '13

12 Apr '13

Hi all, I copy portions of libvirt/src/storage/storage_backend_sheepdog.c [...] 125 ret = virCommandRun(cmd, NULL); 126 if (ret == 0) 127 ret = virStorageBackendSheepdogParseNodeInfo(pool->def, output); [...] I found virCommandRun may return '-1', which hinds something error happens. However, Sheepdog hasn't check here. Maybe i have come up with this bug. I cannot remember clearly. Could anyone please give me some suggestions? If ture, i will give a patch for this bug ;-). -- Thanks Harry Wei

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[libvirt] [PATCH v2 0/2] Add error handling to optional arguments in cmdCPUStats
by John Ferlan 12 Apr '13

12 Apr '13

https://bugzilla.redhat.com/show_bug.cgi?id=907732 Also added informational message when count value is larger than number of CPUs present. Original code commit '31047e2b' quietly changes it and continues on. Prior to patch 2/2, no errors were seen for following sequences virsh cpu-stats guest xyz virsh cpu-stats guest --start xyz virsh cpu-stats guest --count xyz virsh cpu-stats guest --count 99999999999 With patch 2/2, the following errors are displayed for the above sequence error: Unable to parse integer parameter for start error: Unable to parse integer parameter for start error: Unable to parse integer parameter for CPUs to show error: Unable to parse integer parameter for CPUs to show Additionally, the following will be displayed on negative value input: virsh cpu-stats guest --start -1 error: Invalid value for start CPU virsh cpu-stats guest --count -1 error: Invalid value for number of CPUs to show Using a --count parameter value larger than the number of vCPUs on the system will display the following: virsh cpu-stats guest --count 8 Only 4 CPUs available to show CPU0: cpu_time 10.770466061 seconds vcpu_time 8.327848192 seconds ... Diff to v1 - Split into 2 patches (one for struct defs, one for argument processing) - Adjust argument processessing to delineate between bad argument and invalid value (eg, negative CPU start number or count) - Only display the > # cpus message when too large a value is supplied John Ferlan (2): Remove extraneous comma in info_cpu_stats and opts_cpu_stats Add error handling to optional arguments in cmdCPUStats tools/virsh-domain.c | 33 ++++++++++++++++++++++++++++----- 1 file changed, 28 insertions(+), 5 deletions(-) -- 1.8.1.4

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[libvirt] [PATCH] qemu: Do not report unsafe migration for local files
by Jiri Denemark 11 Apr '13

11 Apr '13

When migrating a domain with disk images stored locally (and using storage migration), we should not complain about unsafe migration no matter what cache policy is used for that disk. --- src/qemu/qemu_migration.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index a263668..a31bd02 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -1477,13 +1477,17 @@ qemuMigrationIsSafe(virDomainDefPtr def) !disk->shared && !disk->readonly && disk->cachemode != VIR_DOMAIN_DISK_CACHE_DISABLE) { - int cfs; + int rc; if (disk->type == VIR_DOMAIN_DISK_TYPE_FILE) { - if ((cfs = virStorageFileIsClusterFS(disk->src)) == 1) + if ((rc = virStorageFileIsSharedFS(disk->src)) < 0) + return false; + else if (rc == 0) continue; - else if (cfs < 0) + if ((rc = virStorageFileIsClusterFS(disk->src)) < 0) return false; + else if (rc == 1) + continue; } else if (disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK && disk->protocol == VIR_DOMAIN_DISK_PROTOCOL_RBD) { continue; -- 1.8.1.5

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[libvirt] [PATCH] virsh: Document that using incomplete XML files may have unexpected results
by Peter Krempa 11 Apr '13

11 Apr '13

Explicitly state that using incomplete XML definition snippets for hot-management commands may have unexpected results due to autogenerating values for some of the fields if they aren't specified explicitly. --- tools/virsh.pod | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/virsh.pod b/tools/virsh.pod index 1510d0d..11984bc 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -1824,6 +1824,10 @@ within an existing device; consider using B<update-device> for this usage. For passthrough host devices, see also B<nodedev-detach>, needed if the device does not use managed mode. +B<Note>: using of partial device definition XML files may lead to unexpected +results as some fields may be autogenerated and thus match devices other than +expected. + =item B<attach-disk> I<domain> I<source> I<target> [I<--driver driver>] [I<--subdriver subdriver>] [I<--cache cache>] [I<--type type>] [I<--mode mode>] [I<--config>] [I<--sourcetype soucetype>] @@ -1893,6 +1897,10 @@ as command B<attach-device>. For passthrough host devices, see also B<nodedev-reattach>, needed if the device does not use managed mode. +B<Note>: using of partial device definition XML files may lead to unexpected +results as some fields may be autogenerated and thus match devices other than +expected. + If I<--live> is specified, affect a running domain. If I<--config> is specified, affect the next startup of a persistent domain. If I<--current> is specified, affect the current domain state. @@ -1969,6 +1977,10 @@ an offline domain, and like I<--live> I<--config> for a running domain. Note that older versions of virsh used I<--config> as an alias for I<--persistent>. +B<Note>: using of partial device definition XML files may lead to unexpected +results as some fields may be autogenerated and thus match devices other than +expected. + =item B<change-media> I<domain> I<path> [I<--eject>] [I<--insert>] [I<--update>] [I<source>] [I<--force>] [[I<--live>] [I<--config>] | [I<--current>]] -- 1.8.1.5

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[libvirt] [PATCHv2] qemu: Try to use QMP for send-key if supported
by Peter Krempa 11 Apr '13

11 Apr '13

Instead of always using HMP use the QMP send-key command introduced in qemu 1.3. --- Notes: Version 2: - always try QMP instead of adding capability bit src/qemu/qemu_monitor_json.c | 69 ++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 64 insertions(+), 5 deletions(-) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 1bf8baf..759198b 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -3372,11 +3372,70 @@ int qemuMonitorJSONSendKey(qemuMonitorPtr mon, unsigned int *keycodes, unsigned int nkeycodes) { - /* - * FIXME: qmp sendkey has not been implemented yet, - * and qmp API of it cannot be anticipated, so we use hmp temporary. - */ - return qemuMonitorTextSendKey(mon, holdtime, keycodes, nkeycodes); + int ret = -1; + virJSONValuePtr cmd = NULL; + virJSONValuePtr reply = NULL; + virJSONValuePtr keys = NULL; + virJSONValuePtr key = NULL; + unsigned int i; + + /* create the key data array */ + if (!(keys = virJSONValueNewArray())) + goto no_memory; + + for (i = 0; i < nkeycodes; i++) { + if (keycodes[i] > 0xffff) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("keycode %d is invalid: 0x%X"), i, keycodes[i]); + goto cleanup; + } + + /* create single key object */ + if (!(key = virJSONValueNewObject())) + goto no_memory; + + /* Union KeyValue has two, types, use the generic one */ + if (virJSONValueObjectAppendString(key, "type", "number") < 0) + goto no_memory; + + /* with the keycode */ + if (virJSONValueObjectAppendNumberInt(key, "data", keycodes[i]) < 0) + goto no_memory; + + if (virJSONValueArrayAppend(keys, key) < 0) + goto no_memory; + + key = NULL; + + } + + cmd = qemuMonitorJSONMakeCommand("send-key", + "a:keys", keys, + holdtime ? "U:hold-time" : NULL, holdtime, + NULL); + if (!cmd) + goto cleanup; + + if ((ret = qemuMonitorJSONCommand(mon, cmd, &reply)) < 0) + goto cleanup; + + if (qemuMonitorJSONHasError(reply, "CommandNotFound")) { + VIR_DEBUG("send-key command not found, trying HMP"); + ret = qemuMonitorTextSendKey(mon, holdtime, keycodes, nkeycodes); + } else { + ret = qemuMonitorJSONCheckError(cmd, reply); + } + +cleanup: + virJSONValueFree(cmd); + virJSONValueFree(reply); + virJSONValueFree(keys); + virJSONValueFree(key); + return ret; + +no_memory: + virReportOOMError(); + goto cleanup; } int qemuMonitorJSONScreendump(qemuMonitorPtr mon, -- 1.8.1.5

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[libvirt] [PATCH] Fix error return value for VirCommandNewArgList
by harryxiyou＠gmail.com 11 Apr '13

11 Apr '13

From: Harry Wei <harryxiyou(a)gmail.com> virCommandNewArgList may return NULL so we need not do following stuffs and just return '-1'. Signed-off-by: Harry Wei <harryxiyou(a)gmail.com> CC: Osier Yang <jyang(a)redhat.com> CC: Michal Privoznik <mprivozn(a)redhat.com> --- src/storage/storage_backend_sheepdog.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/storage/storage_backend_sheepdog.c b/src/storage/storage_backend_sheepdog.c index 35a3a04..3452eaa 100644 --- a/src/storage/storage_backend_sheepdog.c +++ b/src/storage/storage_backend_sheepdog.c @@ -120,6 +120,8 @@ virStorageBackendSheepdogRefreshPool(virConnectPtr conn ATTRIBUTE_UNUSED, virCommandPtr cmd; cmd = virCommandNewArgList(COLLIE, "node", "info", "-r", NULL); + if (cmd == NULL) + return -1; virStorageBackendSheepdogAddHostArg(cmd, pool); virCommandSetOutputBuffer(cmd, &output); ret = virCommandRun(cmd, NULL); @@ -142,6 +144,8 @@ virStorageBackendSheepdogDeleteVol(virConnectPtr conn ATTRIBUTE_UNUSED, virCheckFlags(0, -1); virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "delete", vol->name, NULL); + if (cmd == NULL) + return -1; virStorageBackendSheepdogAddHostArg(cmd, pool); int ret = virCommandRun(cmd, NULL); @@ -165,6 +169,8 @@ virStorageBackendSheepdogCreateVol(virConnectPtr conn ATTRIBUTE_UNUSED, } virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "create", vol->name, NULL); + if (cmd == NULL) + return -1; virCommandAddArgFormat(cmd, "%llu", vol->capacity); virStorageBackendSheepdogAddHostArg(cmd, pool); if (virCommandRun(cmd, NULL) < 0) @@ -251,6 +257,8 @@ virStorageBackendSheepdogRefreshVol(virConnectPtr conn ATTRIBUTE_UNUSED, char *output = NULL; virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "list", vol->name, "-r", NULL); + if (cmd == NULL) + return -1; virStorageBackendSheepdogAddHostArg(cmd, pool); virCommandSetOutputBuffer(cmd, &output); ret = virCommandRun(cmd, NULL); @@ -293,6 +301,8 @@ virStorageBackendSheepdogResizeVol(virConnectPtr conn ATTRIBUTE_UNUSED, virCheckFlags(0, -1); virCommandPtr cmd = virCommandNewArgList(COLLIE, "vdi", "resize", vol->name, NULL); + if (cmd == NULL) + return -1; virCommandAddArgFormat(cmd, "%llu", capacity); virStorageBackendSheepdogAddHostArg(cmd, pool); int ret = virCommandRun(cmd, NULL); -- 1.7.9.5

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