External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-12-22 05:35:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

storage: Add flags to allow building pool during create processing

Browse Source 
https://bugzilla.redhat.com/show_bug.cgi?id=830056

Add flags handling to the virStoragePoolCreate and virStoragePoolCreateXML
API's which will allow the caller to provide the capability for the storage
pool create API's to also perform a pool build during creation rather than
requiring the additional buildPool step. This will allow transient pools
to be defined, built, and started.

The new flags are:

    * VIR_STORAGE_POOL_CREATE_WITH_BUILD
      Perform buildPool without any flags passed.

    * VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE
      Perform buildPool using VIR_STORAGE_POOL_BUILD_OVERWRITE flag.

    * VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE
      Perform buildPool using VIR_STORAGE_POOL_BUILD_NO_OVERWRITE flag.

It is up to the backend to handle the processing of build flags. The
overwrite and no-overwrite flags are mutually exclusive.

NB:
This patch is loosely based upon code originally authored by Osier
Yang that were not reviewed and pushed, see:

https://www.redhat.com/archives/libvir-list/2012-July/msg01328.html
This commit is contained in:
John Ferlan 2015-11-25 10:01:45 -05:00
parent 22f9754f1b
commit aeb1078ab5
3 changed files with 65 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
include/libvirt/libvirt-storage.h
View File

@ -57,7 +57,6 @@ typedef enum {
# endif
} virStoragePoolState;
typedef enum {
VIR_STORAGE_POOL_BUILD_NEW = 0, /* Regular build from scratch */
VIR_STORAGE_POOL_BUILD_REPAIR = (1 << 0), /* Repair / reinitialize */
@ -71,6 +70,23 @@ typedef enum {
VIR_STORAGE_POOL_DELETE_ZEROED = 1 << 0, /* Clear all data to zeros (slow) */
} virStoragePoolDeleteFlags;
typedef enum {
VIR_STORAGE_POOL_CREATE_NORMAL = 0,
/* Create the pool and perform pool build without any flags */
VIR_STORAGE_POOL_CREATE_WITH_BUILD = 1 << 0,
/* Create the pool and perform pool build using the
* VIR_STORAGE_POOL_BUILD_OVERWRITE flag. This is mutually
* exclusive to VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE */
VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE = 1 << 1,
/* Create the pool and perform pool build using the
* VIR_STORAGE_POOL_BUILD_NO_OVERWRITE flag. This is mutually
* exclusive to VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE */
VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE = 1 << 2,
} virStoragePoolCreateFlags;
typedef struct _virStoragePoolInfo virStoragePoolInfo;
struct _virStoragePoolInfo {

4
src/libvirt-storage.c
View File

@ -505,7 +505,7 @@ virStoragePoolLookupByVolume(virStorageVolPtr vol)
* virStoragePoolCreateXML:
* @conn: pointer to hypervisor connection
* @xmlDesc: XML description for new pool
* @flags: extra flags; not used yet, so callers should always pass 0
* @flags: bitwise-OR of virStoragePoolCreateFlags
*
* Create a new storage based on its XML description. The
* pool is not persistent, so its definition will disappear
@ -670,7 +670,7 @@ virStoragePoolUndefine(virStoragePoolPtr pool)
/**
* virStoragePoolCreate:
* @pool: pointer to storage pool
* @flags: extra flags; not used yet, so callers should always pass 0
* @flags: bitwise-OR of virStoragePoolCreateFlags
*
* Starts an inactive storage pool
*

48
src/storage/storage_driver.c
View File

@ -671,8 +671,14 @@ storagePoolCreateXML(virConnectPtr conn,
virStoragePoolPtr ret = NULL;
virStorageBackendPtr backend;
char *stateFile = NULL;
unsigned int build_flags = 0;
virCheckFlags(0, NULL);
virCheckFlags(VIR_STORAGE_POOL_CREATE_WITH_BUILD |
VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE |
VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE, NULL);
VIR_EXCLUSIVE_FLAGS_RET(VIR_STORAGE_POOL_BUILD_OVERWRITE,
VIR_STORAGE_POOL_BUILD_NO_OVERWRITE, NULL);
storageDriverLock();
if (!(def = virStoragePoolDefParseString(xml)))
@ -694,6 +700,22 @@ storagePoolCreateXML(virConnectPtr conn,
goto cleanup;
def = NULL;
if (backend->buildPool) {
if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE)
build_flags |= VIR_STORAGE_POOL_BUILD_OVERWRITE;
else if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE)
build_flags |= VIR_STORAGE_POOL_BUILD_NO_OVERWRITE;
if (build_flags ||
(flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD)) {
if (backend->buildPool(conn, pool, build_flags) < 0) {
virStoragePoolObjRemove(&driver->pools, pool);
pool = NULL;
goto cleanup;
}
}
}
if (backend->startPool &&
backend->startPool(conn, pool) < 0) {
virStoragePoolObjRemove(&driver->pools, pool);
@ -845,8 +867,14 @@ storagePoolCreate(virStoragePoolPtr obj,
virStorageBackendPtr backend;
int ret = -1;
char *stateFile = NULL;
unsigned int build_flags = 0;
virCheckFlags(0, -1);
virCheckFlags(VIR_STORAGE_POOL_CREATE_WITH_BUILD |
VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE |
VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE, -1);
VIR_EXCLUSIVE_FLAGS_RET(VIR_STORAGE_POOL_BUILD_OVERWRITE,
VIR_STORAGE_POOL_BUILD_NO_OVERWRITE, -1);
if (!(pool = virStoragePoolObjFromStoragePool(obj)))
return -1;
@ -864,6 +892,22 @@ storagePoolCreate(virStoragePoolPtr obj,
goto cleanup;
}
if (backend->buildPool) {
if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE)
build_flags |= VIR_STORAGE_POOL_BUILD_OVERWRITE;
else if (flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD_NO_OVERWRITE)
build_flags |= VIR_STORAGE_POOL_BUILD_NO_OVERWRITE;
if (build_flags ||
(flags & VIR_STORAGE_POOL_CREATE_WITH_BUILD)) {
if (backend->buildPool(obj->conn, pool, build_flags) < 0) {
virStoragePoolObjRemove(&driver->pools, pool);
pool = NULL;
goto cleanup;
}
}
}
VIR_INFO("Starting up storage pool '%s'", pool->def->name);
if (backend->startPool &&
backend->startPool(obj->conn, pool) < 0)