April 2011 - Devel - libvirt List Archives

[libvirt] tunnelled migration with libvirt 0.9.0
by Jason Krieg 21 Apr '11

21 Apr '11

Hi, is tunnelled migration with libvirt 0.9.0 and qemu-kvm 0.14.0 broken ? all I get is an error "unknown migration protocol" while looking at the code in src/qemu/qemu_migration.c src/qemu/qemu_migration.c: /* Start the QEMU daemon, with the same command-line arguments plus * -incoming stdin (which qemu_command might convert to exec:cat or fd:n) */ internalret = qemuProcessStart(dconn, driver, vm, "stdin", true, dataFD[1], NULL, VIR_VM_OP_MIGRATE_IN_START); migrateFrom is set to "stdin" but in src/qemu/qemu_command.c there is no such match which ends in the above error. Regards, Jason

5 7

[libvirt] [PATCH] PHYP: Adding reboot domain function
by Eduardo Otubo 21 Apr '11

21 Apr '11

Adding reboot <domain> function for pHyp driver. --- src/phyp/phyp_driver.c | 35 ++++++++++++++++++++++++++++++++++- 1 files changed, 34 insertions(+), 1 deletions(-) diff --git a/src/phyp/phyp_driver.c b/src/phyp/phyp_driver.c index bb0e0ac..228751d 100644 --- a/src/phyp/phyp_driver.c +++ b/src/phyp/phyp_driver.c @@ -3384,6 +3384,39 @@ cleanup: } static int +phypDomainReboot(virDomainPtr dom) +{ + int result = -1; + ConnectionData *connection_data = dom->conn->networkPrivateData; + virConnectPtr conn = dom->conn; + LIBSSH2_SESSION *session = connection_data->session; + phyp_driverPtr phyp_driver = conn->privateData; + int system_type = phyp_driver->system_type; + char *managed_system = phyp_driver->managed_system; + int exit_status = 0; + char *ret = NULL; + virBuffer buf = VIR_BUFFER_INITIALIZER; + + virBufferAddLit(&buf, "chsysstate"); + if (system_type == HMC) + virBufferVSprintf(&buf, " -m %s", managed_system); + virBufferVSprintf(&buf, + " -r lpar -o shutdown --id %d --immed --restart", + dom->id); + ret = phypExecBuffer(session, &buf, &exit_status, dom->conn, false); + + if (exit_status < 0) + goto cleanup; + + result = 0; + + cleanup: + VIR_FREE(ret); + + return result; +} + +static int phypDomainShutdown(virDomainPtr dom) { int result = -1; @@ -3707,7 +3740,7 @@ static virDriver phypDriver = { NULL, /* domainSuspend */ phypDomainResume, /* domainResume */ phypDomainShutdown, /* domainShutdown */ - NULL, /* domainReboot */ + phypDomainReboot, /* domainReboot */ phypDomainDestroy, /* domainDestroy */ NULL, /* domainGetOSType */ NULL, /* domainGetMaxMemory */ -- 1.7.1

2 1

[libvirt] [PATCH] esx: Add a wrapper for shared CURL handles
by Matthias Bolte 21 Apr '11

21 Apr '11

To be used to share a CURL handle between multiple threads in the upcoming domain event support. --- src/esx/esx_vi.c | 176 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/esx/esx_vi.h | 19 ++++++ 2 files changed, 195 insertions(+), 0 deletions(-) diff --git a/src/esx/esx_vi.c b/src/esx/esx_vi.c index 2fd09cd..84ff2e2 100644 --- a/src/esx/esx_vi.c +++ b/src/esx/esx_vi.c @@ -85,6 +85,16 @@ ESX_VI__TEMPLATE__ALLOC(CURL) /* esxVI_CURL_Free */ ESX_VI__TEMPLATE__FREE(CURL, { + esxVI_SharedCURL *shared = item->shared; + + if (shared != NULL) { + esxVI_SharedCURL_Remove(shared, item); + + if (shared->count == 0) { + esxVI_SharedCURL_Free(&shared); + } + } + if (item->handle != NULL) { curl_easy_cleanup(item->handle); } @@ -418,6 +428,172 @@ esxVI_CURL_Upload(esxVI_CURL *curl, const char *url, const char *content) /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * SharedCURL + */ + +static void +esxVI_SharedCURL_Lock(CURL *handle ATTRIBUTE_UNUSED, curl_lock_data data, + curl_lock_access access_ ATTRIBUTE_UNUSED, void *userptr) +{ + int i; + esxVI_SharedCURL *shared = userptr; + + switch (data) { + case CURL_LOCK_DATA_SHARE: + i = 0; + break; + + case CURL_LOCK_DATA_COOKIE: + i = 1; + break; + + case CURL_LOCK_DATA_DNS: + i = 2; + break; + + default: + VIR_ERROR(_("Trying to lock unknown SharedCURL lock %d"), (int)data); + return; + } + + virMutexLock(&shared->locks[i]); +} + +static void +esxVI_SharedCURL_Unlock(CURL *handle ATTRIBUTE_UNUSED, curl_lock_data data, + void *userptr) +{ + int i; + esxVI_SharedCURL *shared = userptr; + + switch (data) { + case CURL_LOCK_DATA_SHARE: + i = 0; + break; + + case CURL_LOCK_DATA_COOKIE: + i = 1; + break; + + case CURL_LOCK_DATA_DNS: + i = 2; + break; + + default: + VIR_ERROR(_("Trying to unlock unknown SharedCURL lock %d"), (int)data); + return; + } + + virMutexUnlock(&shared->locks[i]); +} + +/* esxVI_SharedCURL_Alloc */ +ESX_VI__TEMPLATE__ALLOC(SharedCURL) + +/* esxVI_SharedCURL_Free */ +ESX_VI__TEMPLATE__FREE(SharedCURL, +{ + int i; + + if (item->count > 0) { + /* Better leak than crash */ + VIR_ERROR0(_("Trying to free SharedCURL object that is still in use")); + return; + } + + if (item->handle != NULL) { + curl_share_cleanup(item->handle); + } + + for (i = 0; i < ARRAY_CARDINALITY(item->locks); ++i) { + virMutexDestroy(&item->locks[i]); + } +}) + +int +esxVI_SharedCURL_Add(esxVI_SharedCURL *shared, esxVI_CURL *curl) +{ + int i; + + if (curl->handle == NULL) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot share uninitialized CURL handle")); + return -1; + } + + if (curl->shared != NULL) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot share CURL handle that is already shared")); + return -1; + } + + if (shared->handle == NULL) { + shared->handle = curl_share_init(); + + if (shared->handle == NULL) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not initialize CURL (share)")); + return -1; + } + + curl_share_setopt(shared->handle, CURLSHOPT_LOCKFUNC, + esxVI_SharedCURL_Lock); + curl_share_setopt(shared->handle, CURLSHOPT_UNLOCKFUNC, + esxVI_SharedCURL_Unlock); + curl_share_setopt(shared->handle, CURLSHOPT_USERDATA, shared); + curl_share_setopt(shared->handle, CURLSHOPT_SHARE, + CURL_LOCK_DATA_COOKIE); + curl_share_setopt(shared->handle, CURLSHOPT_SHARE, + CURL_LOCK_DATA_DNS); + + for (i = 0; i < ARRAY_CARDINALITY(shared->locks); ++i) { + if (virMutexInit(&shared->locks[i]) < 0) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not initialize a CURL (share) mutex")); + return -1; + } + } + } + + curl_easy_setopt(curl->handle, CURLOPT_SHARE, shared->handle); + + curl->shared = shared; + ++shared->count; + + return 0; +} + +int +esxVI_SharedCURL_Remove(esxVI_SharedCURL *shared, esxVI_CURL *curl) +{ + if (curl->handle == NULL) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot unshare uninitialized CURL handle")); + return -1; + } + + if (curl->shared == NULL) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot unshare CURL handle that is not shared")); + return -1; + } + + if (curl->shared != shared) { + ESX_VI_ERROR(VIR_ERR_INTERNAL_ERROR, "%s", _("CURL (share) mismatch")); + return -1; + } + + curl_easy_setopt(curl->handle, CURLOPT_SHARE, NULL); + + curl->shared = NULL; + --shared->count; + + return 0; +} + + + +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Context */ diff --git a/src/esx/esx_vi.h b/src/esx/esx_vi.h index 57788ac..560b2a6 100644 --- a/src/esx/esx_vi.h +++ b/src/esx/esx_vi.h @@ -83,6 +83,7 @@ typedef enum _esxVI_ProductVersion esxVI_ProductVersion; typedef enum _esxVI_Occurrence esxVI_Occurrence; typedef struct _esxVI_ParsedHostCpuIdInfo esxVI_ParsedHostCpuIdInfo; typedef struct _esxVI_CURL esxVI_CURL; +typedef struct _esxVI_SharedCURL esxVI_SharedCURL; typedef struct _esxVI_Context esxVI_Context; typedef struct _esxVI_Response esxVI_Response; typedef struct _esxVI_Enumeration esxVI_Enumeration; @@ -151,6 +152,7 @@ struct _esxVI_CURL { virMutex lock; struct curl_slist *headers; char error[CURL_ERROR_SIZE]; + esxVI_SharedCURL *shared; }; int esxVI_CURL_Alloc(esxVI_CURL **curl); @@ -162,6 +164,23 @@ int esxVI_CURL_Upload(esxVI_CURL *curl, const char *url, const char *content); /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * SharedCURL + */ + +struct _esxVI_SharedCURL { + CURLSH *handle; + virMutex locks[3]; /* share, cookie, dns */ + size_t count; +}; + +int esxVI_SharedCURL_Alloc(esxVI_SharedCURL **shared); +void esxVI_SharedCURL_Free(esxVI_SharedCURL **shared); +int esxVI_SharedCURL_Add(esxVI_SharedCURL *shared, esxVI_CURL *curl); +int esxVI_SharedCURL_Remove(esxVI_SharedCURL *shared, esxVI_CURL *curl); + + + +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Context */ -- 1.7.0.4

1 1

[libvirt] [PATCH 0/6] virObject for reference-counting
by Hu Tao 20 Apr '11

20 Apr '11

This series adds a virObject structure that manages reference-counting. Some notes about referece-counting introduced by this series: A thread owns a virObject by incrementing its reference-count by 1. If a thread owns a virObject, the virObject is guarenteed not be freed until the thread releases ownership by decrementing its reference-count by 1. A thread can't access a virObject after it releases the ownership of virObject because it can be freed at anytime. A thread can own a virObject legally in these ways: - a thread owns a virObject that it creates. - a thread owns a virObject if another thread passes the ownership to it. Example: qemuMonitorOpen - a thread gets a virObject from a container. Example: virDomainFindByUUID - a container owns a virObject by incrementing its reference-count by 1 before adding it to the container - if a virObject is removed from a container its reference-count must be decremented by 1 By following these rules, there is no need to protect operations on an object's reference-count by an external lock. (like in old ways virDomainObj lock protects qemu monitor's ref-count.) This series is a draft and posted for early review. Any comments are welcome. Hu Tao (6): Add virObject and virAtomic. use virObject to manage reference-count of qemud_client use virObject to manage reference-count of virDomainObj qemu: use virObject to manages reference-counting for qemu monitor remove qemuDomainObjEnterMonitorWithDriver and qemuDomainObjExitMonitorWithDriver remove qemuDomainObjBeginJobWithDriver daemon/dispatch.c | 2 - daemon/libvirtd.c | 62 ++++++-- daemon/libvirtd.h | 5 +- src/Makefile.am | 2 + src/conf/domain_conf.c | 56 ++++---- src/conf/domain_conf.h | 6 +- src/libvirt_private.syms | 5 + src/openvz/openvz_conf.c | 8 +- src/qemu/qemu_domain.c | 121 +-------------- src/qemu/qemu_domain.h | 8 +- src/qemu/qemu_driver.c | 358 ++++++++++++++++++++------------------------- src/qemu/qemu_hotplug.c | 90 ++++++------ src/qemu/qemu_migration.c | 101 ++++++------- src/qemu/qemu_monitor.c | 109 ++++++++------- src/qemu/qemu_monitor.h | 4 +- src/qemu/qemu_process.c | 99 ++++++------- src/util/viratomic.c | 46 ++++++ src/util/viratomic.h | 30 ++++ src/util/virobject.c | 52 +++++++ src/util/virobject.h | 39 +++++ src/vmware/vmware_conf.c | 2 +- 21 files changed, 628 insertions(+), 577 deletions(-) create mode 100644 src/util/viratomic.c create mode 100644 src/util/viratomic.h create mode 100644 src/util/virobject.c create mode 100644 src/util/virobject.h -- 1.7.3.1

4 35

[libvirt] libvirt and virsh logging
by Supriya Kannery 20 Apr '11

20 Apr '11

I am trying to get virsh commands with timestamp logged into a file along with logs collected from libvirt. Finding that virsh and libvirt logs into separate log files. Please suggest on what could be a right approach to get both virsh and libvirt logs into a single file. Thanks, Supriya

1 0

[libvirt] Application Development Guide
by Guilherme Santos 20 Apr '11

20 Apr '11

Good morning! I am one of the developers of OurGrid (http://www.ourgrid.org) a middleware that enables the creation of peer-to-peer computational grids, and we are studying your Libvirt API in order to see if it satisfies our middleware's demands. So we found out your Application Development Guide, and it is being quite useful. I just found small mistakes in the code examples. Even though don't know if this is the appropriate place to notify you guys, here you are: At section 3.9, in the main function, the if block above: if (conn4 == NULL) { fprintf(stderr, "Failed to open connection to qemu:///system\n"); virConnectClose(conn3); virConnectClose(conn2); virConnectClose(conn1); return 3; } The 'return 3' was meant to be 'return 4', right? And I guess that the final If block at section 4.3 is just missing a return statement too. With that being said, I want to take this opportunity to say that documentation of section 9.3 (Java bindings) would be of great help to us, since we are developing everything using Java. Cheers and congratulations for this great job you guys are doing. Moreover, sorry for my poor english. Guilherme Santos -- Guilherme Santos G. Baptista Graduando em Ciência da Computação pela UFCG LSD - Laboratório de Sistemas Distribuídos

1 0

[libvirt] [libvirt-snmp][PATCH v5 0/4] Add SNMP trap/notification support
by Michal Privoznik 20 Apr '11

20 Apr '11

The fifth version. In case we build against libvirt older than 0.9.0 (which have old event API), we need to include some sources from libvirt git. So we are able to run even on older RHELs, like 5.6. Those files were copied to our git and modified very slighty. Finally, we have a proof-of-concept implementation of SNMP trap. Two new files were first generated using mib2c then edited, so be careful when re-generating them. Destination of traps is defined in snmpd.conf (trap2sink), and to receive them snmptrapd must be configured and up. The idea behind is - create a thread in which we poll for domain events. Once we receive event notification, we just fire up trap sending. Michal Privoznik (4): Add notification-type object to libvirt MIB Add libvirt error handling function Create functions to fill in and send notification packets. Add SNMP trap/notification support. INSTALL.1st | 9 +- configure.ac | 17 +- libvirt-snmp.spec.in | 7 +- src/LIBVIRT-MIB.txt | 9 + src/Makefile.am | 25 ++- src/README.txt | 9 +- src/event_poll.c | 724 ++++++++++++++++++++++++++++++++++++++++++++ src/event_poll.h | 132 ++++++++ src/ignore-value.h | 64 ++++ src/internal.h | 267 ++++++++++++++++ src/libvirtNotifications.c | 122 ++++++++ src/libvirtNotifications.h | 33 ++ src/libvirtSnmp.c | 154 +++++++++- src/libvirtSnmpError.c | 34 ++ src/libvirtSnmpError.h | 31 ++ src/memory.c | 313 +++++++++++++++++++ src/memory.h | 212 +++++++++++++ src/threads.c | 251 +++++++++++++++ src/threads.h | 101 ++++++ src/util.c | 105 +++++++ src/util.h | 38 +++ 21 files changed, 2643 insertions(+), 14 deletions(-) create mode 100644 src/event_poll.c create mode 100644 src/event_poll.h create mode 100644 src/ignore-value.h create mode 100644 src/internal.h create mode 100644 src/libvirtNotifications.c create mode 100644 src/libvirtNotifications.h create mode 100644 src/libvirtSnmpError.c create mode 100644 src/libvirtSnmpError.h create mode 100644 src/memory.c create mode 100644 src/memory.h create mode 100644 src/threads.c create mode 100644 src/threads.h create mode 100644 src/util.c create mode 100644 src/util.h -- 1.7.4.2

2 5

[libvirt] [libvirt-php] Add libvirt_storagepool_build() function
by Lyre 20 Apr '11

20 Apr '11

also add flags for this function, currently not used. --- src/libvirt-php.c | 31 +++++++++++++++++++++++++++++++ src/libvirt-php.h | 1 + 2 files changed, 32 insertions(+), 0 deletions(-) diff --git a/src/libvirt-php.c b/src/libvirt-php.c index d436e1c..54331bb 100644 --- a/src/libvirt-php.c +++ b/src/libvirt-php.c @@ -129,6 +129,7 @@ static function_entry libvirt_functions[] = { PHP_FE(libvirt_storagepool_refresh, NULL) PHP_FE(libvirt_storagepool_set_autostart, NULL) PHP_FE(libvirt_storagepool_get_autostart, NULL) + PHP_FE(libvirt_storagepool_build, NULL) /* Network functions */ PHP_FE(libvirt_network_define_xml, NULL) PHP_FE(libvirt_network_undefine, NULL) @@ -542,6 +543,13 @@ PHP_MINIT_FUNCTION(libvirt) /* Forcibly modify device (ex. force eject a cdrom) */ REGISTER_LONG_CONSTANT("VIR_DOMAIN_DEVICE_MODIFY_FORCE", 4, CONST_CS | CONST_PERSISTENT); + /* REGISTER_LONG_CONSTANT */ + REGISTER_LONG_CONSTANT("VIR_STORAGE_POOL_BUILD_NEW", 0, CONST_CS | CONST_PERSISTENT); + /* Repair / reinitialize */ + REGISTER_LONG_CONSTANT("VIR_STORAGE_POOL_BUILD_REPAIR", 1, CONST_CS | CONST_PERSISTENT); + /* Extend existing pool */ + REGISTER_LONG_CONSTANT("VIR_STORAGE_POOL_BUILD_RESIZE", 2, CONST_CS | CONST_PERSISTENT); + REGISTER_INI_ENTRIES(); /* Initialize libvirt and set up error callback */ @@ -3582,6 +3590,29 @@ PHP_FUNCTION(libvirt_storagepool_get_autostart) } } +/* + Function name: libvirt_storagepool_build + Since version: 0.4.2 + Description: Function is used to Build the underlying storage pool, e.g. create the destination directory for NFS + Arguments: @res [resource]: libvirt storagepool resource + Returns: TRUE if success, FALSE on error +*/ +PHP_FUNCTION(libvirt_storagepool_build) +{ + php_libvirt_storagepool *pool = NULL; + zval *zpool; + int flags = 0; + + GET_STORAGEPOOL_FROM_ARGS ("r", &zpool); + + if (virStoragePoolBuild (pool->pool, flags) == 0) + { + RETURN_TRUE; + } + + RETURN_FALSE; +} + /* Listing functions */ /* Function name: libvirt_list_storagepools diff --git a/src/libvirt-php.h b/src/libvirt-php.h index 4e8dec6..2d79f60 100644 --- a/src/libvirt-php.h +++ b/src/libvirt-php.h @@ -193,6 +193,7 @@ PHP_FUNCTION(libvirt_storagepool_get_volume_count); PHP_FUNCTION(libvirt_storagepool_refresh); PHP_FUNCTION(libvirt_storagepool_set_autostart); PHP_FUNCTION(libvirt_storagepool_get_autostart); +PHP_FUNCTION(libvirt_storagepool_build); /* Network functions */ PHP_FUNCTION(libvirt_network_define_xml); PHP_FUNCTION(libvirt_network_undefine); -- 1.7.3.4

2 1

[libvirt] [RFC][PATCHv1 0/5] libvirt - show per cpu accounting information
by KAMEZAWA Hiroyuki 20 Apr '11

20 Apr '11

When running 'virt-top -1' , "show percpu statistics mode", virt-top shows a fake value. When running 'while true; do echo hello;done' on a 4vcpu guest, == 0 0.0 1 0.0 2 0.0 3 0.0 4 25.0 25.0= 5 25.0 25.0=# 6 25.0 25.0= 7 25.0 25.0= == All cpus just used equally ;) This is because there is no interface to get per-cpu usage of domain. This patch adds an interface virDomainPcpuStats() to get per-cpu statistics, cpuTime in nanoseconds. Here is a test result with a python script using new interface. == [root@bluextal python]# ./virt-cpuacct.py ({'cpuTime': 0L}, {'cpuTime': 0L}, {'cpuTime': 0L}, {'cpuTime': 0L}, {'cpuTime': 4679204346L}, {'cpuTime': 2103820380L}, {'cpuTime': 8904513019L}, {'cpuTime': 7424701195L}) [root@bluextal python]# ./virt-cpuacct.py ({'cpuTime': 0L}, {'cpuTime': 0L}, {'cpuTime': 0L}, {'cpuTime': 0L}, {'cpuTime': 57010689139L}, {'cpuTime': 26152907202L}, {'cpuTime': 53759693931L}, {'cpuTime': 43074348218L}) == Although I added a new interface, I still wonder what interface is better... any comments are welcome. Thanks, -Kame

4 13

[libvirt] [PATCHv10 0/6] libvirt - support persistent device modification
by KAMEZAWA Hiroyuki 19 Apr '11

19 Apr '11

Hi, this is v10, totally refleshed. Thank you for advices. This version includes Eric's cleanup and Hu's Update device works. (And droppped some sanity check patches.) Because of many changes from v9, it may be better to write [RFC] in subject ;) This patch series does consolidate Attach/Detach/Update device's codes as.. == shared code (prepare lock, get objects etc..) switch(action) { case ATTACH case DETACH case UPDATE } shared code. == After that, adding persistent modification support as == shared code (prepare lock, get objects etc...) if (MODIFY_CONFIG) { switch (action) { case ATTACH: case DETACH: case UPDATE: } } if (MODIFY_LIVE) { switch (action) { case ATTACH: case DETACH: case UPDATE: } } shared code. (save config etc.) == Thanks, -Kame

2 14