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[libvirt] [PATCH] caps: Improve error if passed an unknown arch
by Cole Robinson 22 Feb '12

22 Feb '12

Previously we would have: "os type 'hvm' & arch 'idontexist' combination is not supported" Now we get "No guest options available for arch 'idontexist'" or if options available but guest OS type not applicable: "No os type 'xen' available for arch 'x86_64'" --- src/conf/capabilities.c | 28 ++++++++++++++++++++++++---- src/conf/capabilities.h | 9 ++++++--- src/conf/domain_conf.c | 13 +++++++++++-- 3 files changed, 41 insertions(+), 9 deletions(-) diff --git a/src/conf/capabilities.c b/src/conf/capabilities.c index d44ce1b..542bf03 100644 --- a/src/conf/capabilities.c +++ b/src/conf/capabilities.c @@ -497,6 +497,26 @@ virCapabilitiesAddGuestFeature(virCapsGuestPtr guest, return NULL; } +/** + * virCapabilitiesSupportsGuestArch: + * @caps: capabilities to query + * @arch: Architecture to search for (eg, 'i686', 'x86_64') + * + * Returns non-zero if the capabilities support the + * requested architecture + */ +extern int +virCapabilitiesSupportsGuestArch(virCapsPtr caps, + const char *arch) +{ + int i; + for (i = 0 ; i < caps->nguests ; i++) { + if (STREQ(caps->guests[i]->arch.name, arch)) + return 1; + } + return 0; +} + /** * virCapabilitiesSupportsGuestOSType: @@ -520,7 +540,7 @@ virCapabilitiesSupportsGuestOSType(virCapsPtr caps, /** - * virCapabilitiesSupportsGuestOSType: + * virCapabilitiesSupportsGuestOSTypeArch: * @caps: capabilities to query * @ostype: OS type to search for (eg 'hvm', 'xen') * @arch: Architecture to search for (eg, 'i686', 'x86_64') @@ -529,9 +549,9 @@ virCapabilitiesSupportsGuestOSType(virCapsPtr caps, * requested operating system type */ extern int -virCapabilitiesSupportsGuestArch(virCapsPtr caps, - const char *ostype, - const char *arch) +virCapabilitiesSupportsGuestOSTypeArch(virCapsPtr caps, + const char *ostype, + const char *arch) { int i; for (i = 0 ; i < caps->nguests ; i++) { diff --git a/src/conf/capabilities.h b/src/conf/capabilities.h index 38d07c4..421030d 100644 --- a/src/conf/capabilities.h +++ b/src/conf/capabilities.h @@ -237,12 +237,15 @@ virCapabilitiesAddGuestFeature(virCapsGuestPtr guest, int toggle); extern int +virCapabilitiesSupportsGuestArch(virCapsPtr caps, + const char *arch); +extern int virCapabilitiesSupportsGuestOSType(virCapsPtr caps, const char *ostype); extern int -virCapabilitiesSupportsGuestArch(virCapsPtr caps, - const char *ostype, - const char *arch); +virCapabilitiesSupportsGuestOSTypeArch(virCapsPtr caps, + const char *ostype, + const char *arch); extern const char * diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 85a2058..b0c3fa6 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -7581,9 +7581,18 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps, def->os.arch = virXPathString("string(./os/type[1]/@arch)", ctxt); if (def->os.arch) { - if (!virCapabilitiesSupportsGuestArch(caps, def->os.type, def->os.arch)) { + if (!virCapabilitiesSupportsGuestArch(caps, def->os.arch)) { virDomainReportError(VIR_ERR_INTERNAL_ERROR, - _("os type '%s' & arch '%s' combination is not supported"), + _("No guest options available for arch '%s'"), + def->os.arch); + goto error; + } + + if (!virCapabilitiesSupportsGuestOSTypeArch(caps, + def->os.type, + def->os.arch)) { + virDomainReportError(VIR_ERR_INTERNAL_ERROR, + _("No os type '%s' available for arch '%s'"), def->os.type, def->os.arch); goto error; } -- 1.7.7.5

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[libvirt] Migration failure related to EOF from Monitor
by Shradha Shah 22 Feb '12

22 Feb '12

Hello All, I am trying to migrate a KVM guest while implementing the patches for PCI-Passthrough of SRIOV Vf's and I repeatedly see the following error: [root@c6100k cwd]# virsh migrate --live dibenchvm1 qemu+ssh://c6100l.uk.level5networks.com/system error: operation failed: migration job: unexpectedly failed I have turned on debugging in /etc/libvirt/libvirtd.conf and I see the following debug in /var/log/libvirt/libvirtd.log 10:37:26.632: 2449: error : qemuMonitorIO:584 : internal error End of file from monitor 10:37:26.632: 2449: debug : qemuMonitorIO:617 : Error on monitor internal error End of file from monitor 10:37:26.632: 2449: debug : virEventPollUpdateHandle:145 : Update handle w=21 e=12 10:37:26.632: 2449: debug : virEventPollInterruptLocked:676 : Skip interrupt, 1 -1497479264 10:37:26.632: 2449: debug : qemuMonitorIO:640 : Triggering EOF callback 10:37:26.632: 2449: debug : qemuProcessHandleMonitorEOF:125 : Received EOF on 0x7f588c003540 'dibenchvm1' 10:37:26.632: 2449: debug : qemuProcessStop:3271 : Shutting down VM 'dibenchvm1' pid=18739 migrated=0 10:37:26.632: 2449: debug : qemuMonitorClose:765 : mon=0x7f588c00c7f0 10:37:26.632: 2449: debug : virEventPollRemoveHandle:172 : Remove handle w=21 10:37:26.633: 2449: debug : virEventPollRemoveHandle:185 : mark delete 9 20 10:37:26.633: 2449: debug : virEventPollInterruptLocked:676 : Skip interrupt, 1 -1497479264 10:37:26.633: 2449: debug : qemuProcessKill:3217 : vm=dibenchvm1 pid=18739 gracefully=0 10:37:26.633: 2449: debug : qemuProcessAutoDestroyRemove:3736 : vm=dibenchvm1 uuid=a4452511-0f97-734a-dbcc-f4c66f821956 10:37:26.633: 2449: debug : virSecurityDACRestoreSecurityAllLabel:504 : Restoring security label on dibenchvm1 migrated=0 May I ask for suggestions on how I can debug the monitor and find out the reason why the qemu monitor dies? Many Thanks, Regards, Shradha Shah

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Re: [libvirt] [Qemu-devel] [PATCH v5 12/12] suspend: add qmp events
by Gerd Hoffmann 22 Feb '12

22 Feb '12

On 02/17/12 18:33, Luiz Capitulino wrote: > On Wed, 15 Feb 2012 11:28:21 +0100 > Gerd Hoffmann <kraxel(a)redhat.com> wrote: > >> Send qmp events on suspend and wakeup so libvirt >> has a chance to track the vm state. [ added libvirt to Cc:, leaving full context. this is about qmp events when the guest enters/leaves s3 ]. >> Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com> >> --- >> monitor.c | 6 ++++++ >> monitor.h | 2 ++ >> vl.c | 15 +++++++++++++++ >> 3 files changed, 23 insertions(+), 0 deletions(-) >> >> diff --git a/monitor.c b/monitor.c >> index aadbdcb..e6f5fad 100644 >> --- a/monitor.c >> +++ b/monitor.c >> @@ -485,6 +485,12 @@ void monitor_protocol_event(MonitorEvent event, QObject *data) >> case QEVENT_BLOCK_JOB_CANCELLED: >> event_name = "BLOCK_JOB_CANCELLED"; >> break; >> + case QEVENT_SUSPEND: >> + event_name = "SUSPEND"; >> + break; >> + case QEVENT_WAKEUP: >> + event_name = "WAKEUP"; >> + break; >> default: >> abort(); >> break; >> diff --git a/monitor.h b/monitor.h >> index b72ea07..9df3bab 100644 >> --- a/monitor.h >> +++ b/monitor.h >> @@ -38,6 +38,8 @@ typedef enum MonitorEvent { >> QEVENT_SPICE_DISCONNECTED, >> QEVENT_BLOCK_JOB_COMPLETED, >> QEVENT_BLOCK_JOB_CANCELLED, >> + QEVENT_SUSPEND, >> + QEVENT_WAKEUP, >> QEVENT_MAX, >> } MonitorEvent; >> >> diff --git a/vl.c b/vl.c >> index bfdcb7c..570ea05 100644 >> --- a/vl.c >> +++ b/vl.c >> @@ -1416,6 +1416,7 @@ static void qemu_system_suspend(void) >> { >> pause_all_vcpus(); >> notifier_list_notify(&suspend_notifiers, NULL); >> + monitor_protocol_event(QEVENT_SUSPEND, NULL); >> is_suspended = true; >> } >> >> @@ -1436,12 +1437,26 @@ void qemu_register_suspend_notifier(Notifier *notifier) >> >> void qemu_system_wakeup_request(WakeupReason reason) >> { >> + static const char *names[] = { >> + [QEMU_WAKEUP_REASON_OTHER] = "other", >> + [QEMU_WAKEUP_REASON_RTC] = "rtc", >> + [QEMU_WAKEUP_REASON_PMTIMER] = "pmtimer", > > Is the reason really important for mngt? Can we just leave it out? I assumed the wakeup reason could be useful, but dunno. Zapping the code is no problem of course. Lets ask mgmt aka libvirt folks ;) cheers, Gerd >> + }; >> + const char *name; >> + QObject *data; >> + >> if (!is_suspended) { >> return; >> } >> if (!(wakeup_reason_mask & (1 << reason))) { >> return; >> } >> + >> + name = (reason < ARRAY_SIZE(names)) ? names[reason] : "unknown"; >> + data = qobject_from_jsonf("{ 'reason': %s }", name); >> + monitor_protocol_event(QEVENT_WAKEUP, data); >> + qobject_decref(data); >> + >> notifier_list_notify(&wakeup_notifiers, &reason); >> reset_requested = 1; >> qemu_notify_event(); >

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[libvirt] [PATCH] virsh: Enhance list command to ease creation of shell scripts
by Peter Krempa 22 Feb '12

22 Feb '12

This patch adds new options to the "virsh list" command enabling filtering of persistent and transient domains along with the option to print only UUIDs or names of domains instead of printing the table. Option --name prints domain names (one per line) instead of the default table. Similarly --uuid prints domain's UUID. The option --table is an alias for the default behavior. Aditionaly --persistent and/or --transient may be specified to filter the output of domains. --- tools/virsh.c | 176 ++++++++++++++++++++++++++++++++++++++++-------------- tools/virsh.pod | 20 ++++++- 2 files changed, 148 insertions(+), 48 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 66ba61c..10160de 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -888,6 +888,11 @@ static const vshCmdInfo info_list[] = { static const vshCmdOptDef opts_list[] = { {"inactive", VSH_OT_BOOL, 0, N_("list inactive domains")}, {"all", VSH_OT_BOOL, 0, N_("list inactive & active domains")}, + {"transient", VSH_OT_BOOL, 0, N_("list transient domains")}, + {"persistent", VSH_OT_BOOL, 0, N_("list persistent domains")}, + {"uuid", VSH_OT_BOOL, 0, N_("list uuid's only")}, + {"name", VSH_OT_BOOL, 0, N_("list domain names only")}, + {"table", VSH_OT_BOOL, 0, N_("list table (default)")}, {"managed-save", VSH_OT_BOOL, 0, N_("mark domains with managed save state")}, {"title", VSH_OT_BOOL, 0, N_("show short domain description")}, @@ -905,13 +910,41 @@ cmdList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) char **names = NULL; int maxname = 0; bool managed = vshCommandOptBool(cmd, "managed-save"); - bool desc = vshCommandOptBool(cmd, "title"); + bool optTitle = vshCommandOptBool(cmd, "title"); + bool optTable = vshCommandOptBool(cmd, "table"); + bool optUUID = vshCommandOptBool(cmd, "uuid"); + bool optName = vshCommandOptBool(cmd, "name"); + bool optPersistent = vshCommandOptBool(cmd, "persistent"); + bool optTransient = vshCommandOptBool(cmd, "transient"); + bool persistUsed = true; + virDomainPtr dom = NULL; char *title; + char uuid[VIR_UUID_STRING_BUFLEN]; int state; + int persistent; bool ret = false; inactive |= all; + /* process arguments */ + if (!optPersistent && !optTransient) { + optPersistent = true; + optTransient = true; + persistUsed = false; + } + + if ((optTable && optName) || + (optTable && optUUID) || + (optName && optUUID)) { + vshError(ctl, "%s", + _("Only one argument from --table, --name and --uuid" + "may be specified.")); + return false; + } + + if (!optUUID && !optName) + optTable = true; + if (!vshConnectionUsability(ctl, ctl->conn)) return false; @@ -924,14 +957,15 @@ cmdList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) if (maxid) { ids = vshMalloc(ctl, sizeof(int) * maxid); - if ((maxid = virConnectListDomains(ctl->conn, &ids[0], maxid)) < 0) { + if ((maxid = virConnectListDomains(ctl->conn, ids, maxid)) < 0) { vshError(ctl, "%s", _("Failed to list active domains")); goto cleanup; } - qsort(&ids[0], maxid, sizeof(int), idsorter); + qsort(ids, maxid, sizeof(int), idsorter); } } + if (inactive) { maxname = virConnectNumOfDefinedDomains(ctl->conn); if (maxname < 0) { @@ -941,7 +975,9 @@ cmdList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) if (maxname) { names = vshMalloc(ctl, sizeof(char *) * maxname); - if ((maxname = virConnectListDefinedDomains(ctl->conn, names, maxname)) < 0) { + if ((maxname = virConnectListDefinedDomains(ctl->conn, + names, + maxname)) < 0) { vshError(ctl, "%s", _("Failed to list inactive domains")); goto cleanup; } @@ -950,77 +986,125 @@ cmdList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) } } - if (desc) { - vshPrintExtra(ctl, "%-5s %-30s %-10s %s\n", _("Id"), _("Name"), _("State"), _("Title")); - vshPrintExtra(ctl, "-----------------------------------------------------------\n"); - } else { - vshPrintExtra(ctl, " %-5s %-30s %s\n", _("Id"), _("Name"), _("State")); - vshPrintExtra(ctl, "----------------------------------------------------\n"); + /* print table header in legacy mode */ + if (optTable) { + vshPrintExtra(ctl, " %-5s %-30s %-10s", + _("Id"), _("Name"), _("State")); + if (optTitle) + vshPrintExtra(ctl, "%-20s", _("Title")); + + vshPrintExtra(ctl, "\n" + "-----------------------------------------------------------\n"); } for (i = 0; i < maxid; i++) { - virDomainPtr dom = virDomainLookupByID(ctl->conn, ids[i]); + dom = virDomainLookupByID(ctl->conn, ids[i]); /* this kind of work with domains is not atomic operation */ if (!dom) continue; - if (desc) { - if (!(title = vshGetDomainDescription(ctl, dom, true, 0))) + if (persistUsed) { + persistent = virDomainIsPersistent(dom); + if (persistent < 0) { + vshError(ctl, "%s", + _("Failed to determine domain's persistent state")); goto cleanup; + } - vshPrint(ctl, "%-5d %-30s %-10s %s\n", - virDomainGetID(dom), - virDomainGetName(dom), - _(vshDomainStateToString(vshDomainState(ctl, dom, NULL))), - title); - VIR_FREE(title); - } else { - vshPrint(ctl, " %-5d %-30s %s\n", - virDomainGetID(dom), - virDomainGetName(dom), - _(vshDomainStateToString(vshDomainState(ctl, dom, NULL)))); + if ((persistent && !optPersistent) || + (!persistent && !optTransient)) { + virDomainFree(dom); + dom = NULL; + continue; + } } + + if (optTable) { + vshPrint(ctl, " %-5d %-30s %-10s", + virDomainGetID(dom), + virDomainGetName(dom), + _(vshDomainStateToString(vshDomainState(ctl, dom, NULL)))); + + if (optTitle) { + if (!(title = vshGetDomainDescription(ctl, dom, true, 0))) + goto cleanup; + + vshPrint(ctl, "%-20s", title); + VIR_FREE(title); + } + + vshPrint(ctl, "\n"); + } else if (optUUID) { + if (virDomainGetUUIDString(dom, uuid) < 0) { + vshError(ctl, "%s", + _("Failed to get domain's UUID")); + goto cleanup; + } + vshPrint(ctl, "%s\n", uuid); + } else if (optName) { + vshPrint(ctl, "%s\n", virDomainGetName(dom)); + } + virDomainFree(dom); + dom = NULL; } + for (i = 0; i < maxname; i++) { - virDomainPtr dom = virDomainLookupByName(ctl->conn, names[i]); + dom = virDomainLookupByName(ctl->conn, names[i]); /* this kind of work with domains is not atomic operation */ - if (!dom) { - VIR_FREE(names[i]); + if (!dom) continue; - } - state = vshDomainState(ctl, dom, NULL); - if (managed && state == VIR_DOMAIN_SHUTOFF && - virDomainHasManagedSaveImage(dom, 0) > 0) - state = -2; + if (!optPersistent) { + virDomainFree(dom); + dom = NULL; + continue; + } - if (desc) { - if (!(title = vshGetDomainDescription(ctl, dom, true, 0))) - goto cleanup; + if (optTable) { + state = vshDomainState(ctl, dom, NULL); + if (managed && state == VIR_DOMAIN_SHUTOFF && + virDomainHasManagedSaveImage(dom, 0) > 0) + state = -2; - vshPrint(ctl, "%-5s %-30s %-10s %s\n", - "-", - names[i], - state == -2 ? _("saved") : _(vshDomainStateToString(state)), - title); - VIR_FREE(title); - } else { - vshPrint(ctl, " %-5s %-30s %s\n", + vshPrint(ctl, " %-5s %-30s %-10s", "-", names[i], state == -2 ? _("saved") : _(vshDomainStateToString(state))); - } - virDomainFree(dom); - VIR_FREE(names[i]); + if (optTitle) { + if (!(title = vshGetDomainDescription(ctl, dom, true, 0))) + goto cleanup; + + vshPrint(ctl, "%-20s", title); + VIR_FREE(title); + } + + vshPrint(ctl, "\n"); + } else if (optUUID) { + if (virDomainGetUUIDString(dom, uuid) < 0) { + vshError(ctl, "%s", + _("Failed to get domain's UUID")); + goto cleanup; + } + vshPrint(ctl, "%s\n", uuid); + } else if (optName) { + vshPrint(ctl, "%s\n", names[i]); + } + + virDomainFree(dom); + dom = NULL; } ret = true; cleanup: + if (dom) + virDomainFree(dom); VIR_FREE(ids); + for (i = 0; i < maxname; i++) + VIR_FREE(names[i]); VIR_FREE(names); return ret; } diff --git a/tools/virsh.pod b/tools/virsh.pod index 0d5a41d..aa29c00 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -280,6 +280,8 @@ The XML also show the NUMA topology information if available. Inject NMI to the guest. =item B<list> [I<--inactive> | I<--all>] [I<--managed-save>] [I<--title>] + [I<--name> | <I--table> | <I--uuid>] [I<--persistent>] + [I<--transient>] Prints information about existing domains. If no options are specified it prints out information about running domains. @@ -348,10 +350,24 @@ crashed. If I<--managed-save> is specified, then domains that have managed save state (only possible if they are in the B<shut off> state) will -instead show as B<saved> in the listing. +instead show as B<saved> in the listing. This flag is usable only with the +default I<--table> output. + +If I<--name> is specified, domain names are printed instead of the table +formated one per line. If I<--uuid> is specified domain's UUID's are printed +instead of names. Flag I<--table> specifies that the legacy table-formated +output should be used. This is the default. All of these are mutually +exclusive. + +Flag I<--persistent> specifies that persistent domains should be printed. +Similarly I<--transiet> enables output of transient domains. These flags +may be combined. Default behavior is as though both were specifiedi (Although +if any of these flags is specified, the check for the persistence state is done +and may fail. If none of these flags is specified, the check is skipped). If I<--title> is specified, then the domain note is printed. The output then -the output looks as follows. +the output looks as follows. This flag is usable only with the default +I<--table> output. B<virsh> list --title Id Name State Title -- 1.7.3.4

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[libvirt] [PATCH] configure: Define program name if not found
by Michal Privoznik 22 Feb '12

22 Feb '12

AC_CHECK_PROG checks for program in given path. However, if it doesn't exists, [variable] is set to [value-if-not-found]. We don't want this to be the empty string in case of 'modprobe' and 'scrub' as we want to fallback to runtime detection. --- configure.ac | 4 ++-- src/util/pci.c | 5 ----- 2 files changed, 2 insertions(+), 7 deletions(-) diff --git a/configure.ac b/configure.ac index 4493b94..732f4fe 100644 --- a/configure.ac +++ b/configure.ac @@ -211,11 +211,11 @@ AC_PATH_PROG([UDEVADM], [udevadm], [], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_PATH_PROG([UDEVSETTLE], [udevsettle], [], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) -AC_PATH_PROG([MODPROBE], [modprobe], [], +AC_PATH_PROG([MODPROBE], [modprobe], [modprobe], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_PATH_PROG([OVSVSCTL], [ovs-vsctl], [ovs-vsctl], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) -AC_PATH_PROG([SCRUB], [scrub], [], +AC_PATH_PROG([SCRUB], [scrub], [scrub], [/sbin:/usr/sbin:/usr/local/sbin:$PATH]) AC_DEFINE_UNQUOTED([DNSMASQ],["$DNSMASQ"], diff --git a/src/util/pci.c b/src/util/pci.c index 633dcd8..c660e8d 100644 --- a/src/util/pci.c +++ b/src/util/pci.c @@ -40,11 +40,6 @@ #include "virterror_internal.h" #include "virfile.h" -/* avoid compilation breakage on some systems */ -#ifndef MODPROBE -# define MODPROBE "modprobe" -#endif - #define PCI_SYSFS "/sys/bus/pci/" #define PCI_ID_LEN 10 /* "XXXX XXXX" */ #define PCI_ADDR_LEN 13 /* "XXXX:XX:XX.X" */ -- 1.7.3.4

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[libvirt] [PATCH] util: Fix virFileAccessibleAs return path from parent
by Michal Privoznik 22 Feb '12

22 Feb '12

Despite documentation, if we do fork() parent always returns -1 even if file is accessible. Which is wrong obviously. --- src/util/util.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/src/util/util.c b/src/util/util.c index 3406b7b..04a0e79 100644 --- a/src/util/util.c +++ b/src/util/util.c @@ -724,8 +724,12 @@ virFileAccessibleAs(const char *path, int mode, return -1; } - errno = status; - return -1; + if (!status) { + errno = status; + return -1; + } + + return 0; } /* child. -- 1.7.3.4

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[libvirt] [PATCH 0/2] VMware Workstation domainXMLFromNative support
by Jean-Baptiste Rouault 22 Feb '12

22 Feb '12

These patches add domainXMLFromNative to the vmware driver and add support for more network configurations in vmx files Jean-Baptiste Rouault (2): vmware: implement domainXMLFromNative vmx: Better Workstation vmx handling src/vmware/vmware_driver.c | 31 +++++++++++++++++++++++++++++++ src/vmx/vmx.c | 29 ++++++++++++++++++----------- 2 files changed, 49 insertions(+), 11 deletions(-) -- 1.7.9

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[libvirt] Fwd: a question about sanlock
by Alex Jia 21 Feb '12

21 Feb '12

Hi Daniel, Thanks for your quick reply, from safety point of view, yes, libvirt should exit, but, your alternative solution is more friendly for users, however, I haven't any idea about this now, maybe, others want to do this, so forward it to libvirt-list. Thanks & Regards, Alex ----- Forwarded Message ----- From: "Daniel P. Berrange" <berrange(a)redhat.com> To: "Alex Jia" <ajia(a)redhat.com> Cc: libvirt-users(a)redhat.com Sent: Wednesday, February 22, 2012 4:19:28 PM Subject: Re: [libvirt] a question about sanlock On Wed, Feb 22, 2012 at 02:04:09AM -0500, Alex Jia wrote: > Hi Daniel, > I got a question about lock manager, if I enable 'sanlock' in qemu.conf and > uncomment 'auto_disk_leases = 1' in qemu-sanlock.conf then restart libvirtd > service, libvirtd will be dead, I know I should also uncomment 'host_id = 1' > in qemu-sanlock.conf, because I enable 'auto_disk_leases'. The question is > the libvirtd must die due to a error users configuration? or could we give > some warning information instead of libvirtd die? I think this is a safety issue - if someone is deploying libvirt in an scenario where they want locking, then we must be very careful not to accidentally run without locking. So if someone accidentally mis-configures one of their libvirtd instances to not have any host_id parameter, I felt the only safe thing todo was to exit. An alternative would be to allow libvirtd to start, but then make sure it refuses to start any guests. I'm happy to take patches for the latter if someone wants to... Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

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[libvirt] Effect of cluster size on read write performance
by Pankaj Rawat 21 Feb '12

21 Feb '12

Hi all The cluster -size increase write performance when the qcow2 image is not expanded , surely with increase in cluster_size the disk space used increases but that is not my concern. Can anyone tell what is the effect of cluster size on read and write performance on qcow2 image after expantion? DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------

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[libvirt] virtio-win-0.1-22 balloon install fails on 2008R2
by sean darcy 21 Feb '12

21 Feb '12

Trying to install the virtio-win-0.1-22.iso balloon driver on Windows 2008R2: E:\Wlh\amd64>x:\microsoft\WinDDK\7600.16385.win7_wdk.100208-1538\tools\devcon\amd64\devcon.exe install BALLOON.inf PCI\VEN_1AF4&DEV_1002&SUBSYS_00051AF4&REV_00 Device node created. Install is complete when drivers are installed... Updating drivers for PCI\VEN_1AF4 from E:\Wlh\amd64\BALLOON.inf. devcon.exe failed. 'DEV_1002' is not recognized as an internal or external command, operable program or batch file. 'SUBSYS_00051AF4' is not recognized as an internal or external command, operable program or batch file. 'REV_00' is not recognized as an internal or external command, operable program or batch file. Any help appreciated. sean

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