Re: [Libvir] PATCH: 1/16: public API

This defines the public API for the storage pool and volume support. The naming of the APIs follows the example set by the network and domain APIs whereever the logical functions match. The main change since previous iterations is the addition of an explicit API for virStoragePoolBuild and virStoragePoolDelete, to allow formatting of the underlying storage, and permanent deletion. Many of the APIs also now have an 'unsigned int flags' param. It is also possible to lookup a volume directly based on its path or key without having the associated pool object ahead of time.

include/libvirt/libvirt.h | 202 +++++++++++++++++++++++++++++++++++++++++++ include/libvirt/libvirt.h.in | 202 +++++++++++++++++++++++++++++++++++++++++++ src/libvirt_sym.version | 45 +++++++++ 3 files changed, 449 insertions(+) diff -r d674e201bd98 include/libvirt/libvirt.h --- a/include/libvirt/libvirt.h Tue Feb 05 12:24:51 2008 -0500 +++ b/include/libvirt/libvirt.h Tue Feb 05 13:28:02 2008 -0500 @@ -859,6 +859,208 @@ int virNetworkSetAutostart (virNetwork int virNetworkSetAutostart (virNetworkPtr network, int autostart); + +/** + * virStoragePool: + * + * a virStoragePool is a private structure representing a storage pool + */ +typedef struct _virStoragePool virStoragePool; + +/** + * virStoragePoolPtr: + * + * a virStoragePoolPtr is pointer to a virStoragePool private structure, this is the + * type used to reference a storage pool in the API. + */ +typedef virStoragePool *virStoragePoolPtr; + + +typedef enum { + VIR_STORAGE_POOL_INACTIVE = 0, /* Not running */ + VIR_STORAGE_POOL_BUILDING = 1, /* Initializing pool, not available */ + VIR_STORAGE_POOL_RUNNING = 2, /* Running normally */ + VIR_STORAGE_POOL_DEGRADED = 3, /* Running degraded */ +} virStoragePoolState; + + +typedef enum { + VIR_STORAGE_POOL_BUILD_NEW = 0, /* Regular build from scratch */ + VIR_STORAGE_POOL_BUILD_REPAIR = 1, /* Repair / reinitialize */ + VIR_STORAGE_POOL_BUILD_EXTEND = 2 /* Extend existing pool */

+} virStoragePoolBuildFlags; + +typedef enum { + VIR_STORAGE_POOL_DELETE_NORMAL = 0, /* Delete metadata only (fast) */ + VIR_STORAGE_POOL_DELETE_CLEAR = 1, /* Clear all data to zeros (slow) */

+} virStoragePoolDeleteFlags; + +typedef struct _virStoragePoolInfo virStoragePoolInfo; + +struct _virStoragePoolInfo { + int state; /* virStoragePoolState flags */ + unsigned long long capacity; /* Logical size bytes */ + unsigned long long allocation; /* Current allocation bytes */ + unsigned long long available; /* Remaining free space bytes */ +}; + +typedef virStoragePoolInfo *virStoragePoolInfoPtr; + + +/** + * virStorageVol: + * + * a virStorageVol is a private structure representing a storage volume + */ +typedef struct _virStorageVol virStorageVol; + +/** + * virStorageVolPtr: + * + * a virStorageVolPtr is pointer to a virStorageVol private structure, this is the + * type used to reference a storage volume in the API. + */ +typedef virStorageVol *virStorageVolPtr; + + +typedef enum { + VIR_STORAGE_VOL_FILE = 0, /* Regular file based volumes */ + VIR_STORAGE_VOL_BLOCK = 1, /* Block based volumes */ + VIR_STORAGE_VOL_VIRTUAL = 2, /* Volumes which aren't assignable to guests */ +} virStorageVolType;

+typedef enum { + VIR_STORAGE_VOL_DELETE_NORMAL = 0, /* Delete metadata only (fast) */ + VIR_STORAGE_VOL_DELETE_CLEAR = 1, /* Clear all data to zeros (slow) */ +} virStorageVolDeleteFlags;

+typedef struct _virStorageVolInfo virStorageVolInfo; + +struct _virStorageVolInfo { + int type; /* virStorageVolType flags */ + unsigned long long capacity; /* Logical size bytes */ + unsigned long long allocation; /* Current allocation bytes */ +}; + +typedef virStorageVolInfo *virStorageVolInfoPtr; + +/* + * Get connection from pool. + */ +virConnectPtr virStoragePoolGetConnect (virStoragePoolPtr pool); + +/* + * List active storage pools + */ +int virConnectNumOfStoragePools (virConnectPtr conn); +int virConnectListStoragePools (virConnectPtr conn, + char **const names, + int maxnames); + +/* + * List inactive storage pools + */ +int virConnectNumOfDefinedStoragePools(virConnectPtr conn); +int virConnectListDefinedStoragePools(virConnectPtr conn, + char **const names, + int maxnames); + +/* + * Query a host for storage pools of a particular type + */ +int virConnectDiscoverStoragePools(virConnectPtr conn, + const char *hostname, + const char *type, + unsigned int flags, + char ***xmlDesc); + +/* + * Lookup pool by name or uuid + */ +virStoragePoolPtr virStoragePoolLookupByName (virConnectPtr conn, + const char *name); +virStoragePoolPtr virStoragePoolLookupByUUID (virConnectPtr conn, + const unsigned char *uuid); +virStoragePoolPtr virStoragePoolLookupByUUIDString(virConnectPtr conn, + const char *uuid); +virStoragePoolPtr virStoragePoolLookupByVolume (virStorageVolPtr vol); + +/* + * Creating/destroying pools + */ +virStoragePoolPtr virStoragePoolCreateXML (virConnectPtr conn, + const char *xmlDesc); +virStoragePoolPtr virStoragePoolDefineXML (virConnectPtr conn, + const char *xmlDesc); +int virStoragePoolBuild (virStoragePoolPtr pool, + unsigned int flags); +int virStoragePoolUndefine (virStoragePoolPtr pool); +int virStoragePoolCreate (virStoragePoolPtr pool);

+int virStoragePoolDestroy (virStoragePoolPtr pool); +int virStoragePoolDelete (virStoragePoolPtr pool, + unsigned int flags); +int virStoragePoolFree (virStoragePoolPtr pool); +int virStoragePoolRefresh (virStoragePoolPtr pool, + unsigned int flags); + +/* + * StoragePool information + */ +const char* virStoragePoolGetName (virStoragePoolPtr pool); +int virStoragePoolGetUUID (virStoragePoolPtr pool, + unsigned char *uuid); +int virStoragePoolGetUUIDString (virStoragePoolPtr pool, + char *buf); + +int virStoragePoolGetInfo (virStoragePoolPtr vol, + virStoragePoolInfoPtr info); + +char * virStoragePoolGetXMLDesc (virStoragePoolPtr pool, + unsigned int flags); + +int virStoragePoolGetAutostart (virStoragePoolPtr pool, + int *autostart); +int virStoragePoolSetAutostart (virStoragePoolPtr pool, + int autostart); + +/* + * List/lookup storage volumes within a pool + */ +int virStoragePoolNumOfVolumes (virStoragePoolPtr pool); +int virStoragePoolListVolumes (virStoragePoolPtr pool, + char **const names, + int maxnames); + +virConnectPtr virStorageVolGetConnect (virStorageVolPtr vol); + +/* + * Lookup volumes based on various attributes + */ +virStorageVolPtr virStorageVolLookupByName (virStoragePoolPtr pool, + const char *name); +virStorageVolPtr virStorageVolLookupByKey (virConnectPtr conn, + const char *key); +virStorageVolPtr virStorageVolLookupByPath (virConnectPtr conn, + const char *path); + + +const char* virStorageVolGetName (virStorageVolPtr vol); +const char* virStorageVolGetKey (virStorageVolPtr vol); + +virStorageVolPtr virStorageVolCreateXML (virStoragePoolPtr pool, + const char *xmldesc, + unsigned int flags); +int virStorageVolDelete (virStorageVolPtr vol, + unsigned int flags); +int virStorageVolFree (virStorageVolPtr vol); + +int virStorageVolGetInfo (virStorageVolPtr vol, + virStorageVolInfoPtr info); +char * virStorageVolGetXMLDesc (virStorageVolPtr pool, + unsigned int flags); + +char * virStorageVolGetPath (virStorageVolPtr vol); + #ifdef __cplusplus } #endif

--- a/src/libvirt_sym.version Tue Feb 05 12:24:51 2008 -0500 +++ b/src/libvirt_sym.version Tue Feb 05 13:28:02 2008 -0500 @@ -116,6 +116,49 @@ virNetworkGetAutostart; virNetworkSetAutostart; + virStoragePoolGetConnect; + virConnectNumOfStoragePools; + virConnectNumOfDefinedStoragePools; + virConnectListStoragePools; + virConnectListDefinedStoragePools; + virConnectDiscoverStoragePools; + virStoragePoolLookupByName; + virStoragePoolLookupByUUID; + virStoragePoolLookupByUUIDString; + virStoragePoolLookupByVolume; + virStoragePoolCreateXML; + virStoragePoolDefineXML; + virStoragePoolUndefine; + virStoragePoolCreate; + virStoragePoolBuild; + virStoragePoolDestroy; + virStoragePoolDelete; + virStoragePoolRefresh; + virStoragePoolFree; + virStoragePoolGetName; + virStoragePoolGetUUID; + virStoragePoolGetUUIDString; + virStoragePoolGetInfo; + virStoragePoolGetXMLDesc; + virStoragePoolSetAutostart; + virStoragePoolGetAutostart; + virStoragePoolNumOfVolumes; + virStoragePoolListVolumes; + + virConnectNumOfStorageVolumes; + virConnectListStorageVolumes; + virStorageVolLookupByName; + virStorageVolLookupByKey; + virStorageVolLookupByPath; + virStorageVolCreateXML; + virStorageVolDelete; + virStorageVolFree; + virStorageVolGetName; + virStorageVolGetKey; + virStorageVolGetInfo; + virStorageVolGetXMLDesc; + virStorageVolGetPath; + /* Symbols with __ are private only for use by the libvirtd daemon. They are not part of stable ABI @@ -133,6 +176,8 @@ __virGetDomain; __virGetNetwork; + __virGetStoragePool; + __virGetStorageVol;