On Fri, Jul 29, 2011 at 12:34:15PM +0800, Lei Li wrote:
To make sure the unique storage pool defined and created from different directory to avoid inconsistent version of volume pool created, I add two API be called by storage driver to check for the probable duplicate pools and refused the duplicate pool.
virStoragePoolObjFindByPath() provide a method to find pool object by target path in pool list. virStoragePoolTargetDuplicate() implement the function to check if there is duplicate pool. Add judgement for storagePoolCreate&storagePoolDefine by calling virStoragePoolTargetDuplicate() to avoid both transient storage pool and persistent storage pool be created repeatedly in storage driver.
Signed-off-by: Lei Li<lilei@linux.vnet.ibm.com> --- src/conf/storage_conf.c | 39 +++++++++++++++++++++++++++++++++++++++ src/conf/storage_conf.h | 4 ++++ src/libvirt_private.syms | 2 ++ src/storage/storage_driver.c | 6 ++++++ 4 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c index 995f9a6..a499e82 100644 --- a/src/conf/storage_conf.c +++ b/src/conf/storage_conf.c @@ -1317,6 +1317,22 @@ virStoragePoolObjFindByName(virStoragePoolObjListPtr pools, return NULL; }
+virStoragePoolObjPtr +virStoragePoolObjFindByPath(virStoragePoolObjListPtr pools, + const char *path) +{ + unsigned int i; + + for (i = 0 ; i< pools->count ; i++) { + virStoragePoolObjLock(pools->objs[i]); + if (STREQ(pools->objs[i]->def->target.path, path)) + return pools->objs[i]; + virStoragePoolObjUnlock(pools->objs[i]); + } + + return NULL; +} + void virStoragePoolObjClearVols(virStoragePoolObjPtr pool) { @@ -1707,6 +1723,29 @@ cleanup: return ret; }
+int virStoragePoolTargetDuplicate(virStoragePoolObjListPtr pools, + virStoragePoolDefPtr def) +{ + int ret = 1; + virStoragePoolObjPtr pool = NULL; + + /*check pool list if defined target path already exist*/ + pool = virStoragePoolObjFindByPath(pools, def->target.path); + + if (pool) { + virStorageReportError(VIR_ERR_OPERATION_FAILED, + _("target path '%s' is already in use"), + pool->def->target.path); + ret = -1; + goto cleanup; + }
This only works for pools which are type=dir|fs|netfs|logical It will fail for type=iscsi|scsi|disk, because in those cases the target path has no uniqueness requirement, and will almost always just be either /dev or /dev/disk/by-path for all pool. 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 :|