From: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; Update doc to support storage volume reference count. Signed-off-by: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; --- docs/API.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/docs/API.md b/docs/API.md index 7f5e4d6..f28c2b3 100644 --- a/docs/API.md +++ b/docs/API.md @@ -391,6 +391,9 @@ A interface represents available network interface on VM. * os_distro *(optional)*: os distribution of the volume, for iso volume only. * os_version *(optional)*: os version of the volume, for iso volume only. * bootable *(optional)*: True if iso image is bootable and not corrupted. + * ref_cnt: Number of vms which used this volume, + 0 for volumes which are available for attachment. + >1 indicate number of vms used this volume. * **DELETE**: Remove the Storage Volume * **POST**: *See Storage Volume Actions* -- 1.8.1.2

From: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; Set ref_cnt to 0 when new volume created, report it when lookup storage volume, for volume outside kimchi scope, set ref_cnt to be -1. Signed-off-by: Royce Lv <lvroyce(a)linux.vnet.ibm.com&gt; --- src/kimchi/mockmodel.py | 3 +++ src/kimchi/model/storagevolumes.py | 35 +++++++++++++++++++++++++++++++++-- 2 files changed, 36 insertions(+), 2 deletions(-) diff --git a/src/kimchi/mockmodel.py b/src/kimchi/mockmodel.py index 0c2da8a..76b2221 100644 --- a/src/kimchi/mockmodel.py +++ b/src/kimchi/mockmodel.py @@ -419,6 +419,7 @@ class MockModel(object): name = params['name'] volume = MockStorageVolume(pool, name, params) volume.info['type'] = params['type'] + volume.info['ref_cnt'] = params.get('ref_cnt', 0) volume.info['format'] = params['format'] volume.info['path'] = os.path.join( pool.info['path'], name) @@ -834,6 +835,7 @@ class MockVMTemplate(VMTemplate): disk_paths = [] for vol_info in volumes: vol_info['capacity'] = vol_info['capacity'] << 10 + vol_info['ref_cnt'] = 1 self.model.storagevolumes_create(pool.name, vol_info) disk_paths.append({'pool': pool.name, 'volume': vol_info['name']}) return disk_paths @@ -945,6 +947,7 @@ class MockStorageVolume(object): 'capacity': capacity << 20, 'allocation': params.get('allocation','512'), 'path': params.get('path'), + 'ref_cnt': params.get('ref_cnt'), 'format': fmt} if fmt == 'iso': self.info['allocation'] = self.info['capacity'] diff --git a/src/kimchi/model/storagevolumes.py b/src/kimchi/model/storagevolumes.py index e3f00ca..9906f33 100644 --- a/src/kimchi/model/storagevolumes.py +++ b/src/kimchi/model/storagevolumes.py @@ -29,6 +29,8 @@ from kimchi.exception import InvalidOperation, IsoFormatError from kimchi.exception import MissingParameter, NotFoundError, OperationFailed from kimchi.isoinfo import IsoImage from kimchi.model.storagepools import StoragePoolModel +from kimchi.model.vms import VMsModel +from kimchi.model.vmstorages import VMStoragesModel, VMStorageModel VOLUME_TYPE_MAP = {0: 'file', @@ -40,6 +42,7 @@ VOLUME_TYPE_MAP = {0: 'file', class StorageVolumesModel(object): def __init__(self, **kargs): self.conn = kargs['conn'] + self.objstore = kargs['objstore'] def create(self, pool, params): vol_xml = """ @@ -58,6 +61,7 @@ class StorageVolumesModel(object): params.setdefault('format', 'qcow2') name = params['name'] + vol_id = '%s:%s' % (pool, name) try: pool = StoragePoolModel.get_storagepool(pool, self.conn) xml = vol_xml % params @@ -71,6 +75,10 @@ class StorageVolumesModel(object): raise OperationFailed("KCHVOL0007E", {'name': name, 'pool': pool, 'err': e.get_error_message()}) + + with self.objstore as session: + session.store('storagevolume', vol_id, {'ref_cnt': 0}) + return name def get_list(self, pool_name): @@ -79,7 +87,7 @@ class StorageVolumesModel(object): raise InvalidOperation("KCHVOL0006E", {'pool': pool_name}) try: pool.refresh(0) - return pool.listVolumes() + return sorted(map(lambda x: x.decode('utf-8'), pool.listVolumes())) except libvirt.libvirtError as e: raise OperationFailed("KCHVOL0008E", {'pool': pool_name, @@ -89,13 +97,14 @@ class StorageVolumesModel(object): class StorageVolumeModel(object): def __init__(self, **kargs): self.conn = kargs['conn'] + self.objstore = kargs['objstore'] def _get_storagevolume(self, pool, name): pool = StoragePoolModel.get_storagepool(pool, self.conn) if not pool.isActive(): raise InvalidOperation("KCHVOL0006E", {'name': pool}) try: - return pool.storageVolLookupByName(name) + return pool.storageVolLookupByName(name.encode("utf-8")) except libvirt.libvirtError as e: if e.get_error_code() == libvirt.VIR_ERR_NO_STORAGE_VOL: raise NotFoundError("KCHVOL0002E", {'name': name, @@ -103,16 +112,38 @@ class StorageVolumeModel(object): else: raise + def _get_ref_cnt(self, pool, name, path): + vol_id = '%s:%s' % (pool, name) + with self.objstore as session: + try: + ref_cnt = session.get('storagevolume', vol_id)['ref_cnt'] + except NotFoundError: + # Fix storage volume created outside kimchi scope + ref_cnt = 0 + args = {'conn': self.conn, 'objstore': self.objstore} + # try to find this volume in exsisted vm + vms = VMsModel(**args).get_list() + for vm in vms: + storages = VMStoragesModel(**args).get_list(vm) + for disk in storages: + if path == VMStorageModel(**args).lookup(vm, disk)['path']: + ref_cnt = ref_cnt + 1 + session.store('storagevolume', vol_id, {'ref_cnt': ref_cnt}) + + return ref_cnt + def lookup(self, pool, name): vol = self._get_storagevolume(pool, name) path = vol.path() info = vol.info() xml = vol.XMLDesc(0) fmt = xmlutils.xpath_get_text(xml, "/volume/target/format/@type")[0] + ref_cnt = self._get_ref_cnt(pool, name, path) res = dict(type=VOLUME_TYPE_MAP[info[0]], capacity=info[1], allocation=info[2], path=path, + ref_cnt=ref_cnt, format=fmt) if fmt == 'iso': if os.path.islink(path): -- 1.8.1.2