[libvirt] [PATCH 1/8] fspool: introduce filesystem pools API
Olga Krishtal
okrishtal at virtuozzo.com
Thu Sep 15 07:32:20 UTC 2016
API follows the API of storage pools closely where it doesn't
differ for filesystems.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy at virtuozzo.com>
Signed-off-by: Maxim Nestratov <mnestratov at virtuozzo.com>
---
include/libvirt/libvirt-fs.h | 260 +++++++++++++++++++++++++++++++++++++++++++
include/libvirt/libvirt.h | 1 +
2 files changed, 261 insertions(+)
create mode 100644 include/libvirt/libvirt-fs.h
diff --git a/include/libvirt/libvirt-fs.h b/include/libvirt/libvirt-fs.h
new file mode 100644
index 0000000..53ff766
--- /dev/null
+++ b/include/libvirt/libvirt-fs.h
@@ -0,0 +1,260 @@
+/* libvirt-fs.h
+ * Summary: APIs for management of filesystem pools and items
+ * Description: Provides APIs for the management of filesystem pools and items
+ * Author: Olga Krishtal <okrishtal at virtuozzo.com>
+ *
+ * Copyright (C) 2016 Parallels IP Holdings GmbH
+ *
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __VIR_LIBVIRT_FS_H__
+# define __VIR_LIBVIRT_FS_H__
+
+# ifndef __VIR_LIBVIRT_H_INCLUDES__
+# error "Don't include this file directly, only use libvirt/libvirt.h"
+# endif
+
+typedef enum {
+ VIR_FSPOOL_CREATE_NORMAL = 0,
+
+ /* Create the fspool and perform fspool build without any flags */
+ VIR_FSPOOL_CREATE_WITH_BUILD = 1 << 0,
+
+ /* Create the fspool and perform fspool build using the
+ * exclusive to VIR_FSPOOL_CREATE_WITH_BUILD_NO_OVERWRITE */
+ VIR_FSPOOL_CREATE_WITH_BUILD_OVERWRITE = 1 << 1,
+
+ /* Create the pool and perform pool build using the
+ * VIR_FSPOOL_BUILD_NO_OVERWRITE flag. This is mutually
+ * exclusive to VIR_FSPOOL_CREATE_WITH_BUILD_OVERWRITE */
+ VIR_FSPOOL_CREATE_WITH_BUILD_NO_OVERWRITE = 1 << 2,
+} virFSPoolCreateFlags;
+
+typedef enum {
+ VIR_FSPOOL_BUILD_NEW = 0, /* Regular build from scratch */
+ VIR_FSPOOL_BUILD_NO_OVERWRITE = (1 << 2), /* Do not overwrite existing pool */
+ VIR_FSPOOL_BUILD_OVERWRITE = (1 << 3), /* Overwrite data */
+} virFSPoolBuildFlags;
+
+/**
+ * virFSPool:
+ *
+ * a virFSPool is a private structure representing a fspool
+ */
+typedef struct _virFSPool virFSPool;
+
+/**
+ * virFSPoolPtr:
+ *
+ * a virFSPoolPtr is pointer to a virFSPool private structure, this is the
+ * type used to reference a fspool in the API.
+ */
+typedef virFSPool *virFSPoolPtr;
+
+typedef enum {
+ VIR_FSPOOL_INACTIVE = 0,
+ VIR_FSPOOL_BUILDING = 1,
+ VIR_FSPOOL_RUNNING = 2,
+
+# ifdef VIR_ENUM_SENTINELS
+ VIR_FSPOOL_STATE_LAST
+# endif
+} virFSPoolState;
+
+typedef struct _virFSPoolInfo virFSPoolInfo;
+
+struct _virFSPoolInfo {
+ int state; /* virFSPoolState flags */
+ unsigned long long capacity; /* Logical size bytes */
+ unsigned long long allocation; /* Current allocation bytes */
+ unsigned long long available; /* Remaining free space bytes */
+};
+
+typedef virFSPoolInfo *virFSPoolInfoPtr;
+
+/**
+ * virFSItem:
+ *
+ * a virFSItem is a private structure representing a fspool item
+ */
+typedef struct _virFSItem virFSItem;
+
+/**
+ * virFSItemPtr:
+ *
+ * a virFSItemPtr is pointer to a virFSItem private structure, this is the
+ * type used to reference a fspool item in the API.
+ */
+typedef virFSItem *virFSItemPtr;
+
+typedef struct _virFSItemInfo virFSItemInfo;
+
+typedef enum {
+ VIR_FSITEM_DIR = 0,
+ VIR_FSITEM_LAST
+} virFSItemType;
+
+struct _virFSItemInfo {
+ int type; /* virFSItemType flags */
+ unsigned long long capacity; /* Logical size bytes */
+ unsigned long long allocation; /* Current allocation bytes */
+};
+
+typedef virFSItemInfo *virFSItemInfoPtr;
+/*
+ * Get connection from fspool.
+ */
+virConnectPtr virFSPoolGetConnect(virFSPoolPtr fspool);
+
+
+/*
+ * virConnectListAllFSPoolsFlags:
+ *
+ * Flags used to tune fspools returned by virConnectListAllFSPools().
+ * Note that these flags come in groups; if all bits from a group are 0,
+ * then that group is not used to filter results.
+ */
+typedef enum {
+ VIR_CONNECT_LIST_FSPOOLS_INACTIVE = 1 << 0,
+ VIR_CONNECT_LIST_FSPOOLS_ACTIVE = 1 << 1,
+
+ VIR_CONNECT_LIST_FSPOOLS_PERSISTENT = 1 << 2,
+ VIR_CONNECT_LIST_FSPOOLS_TRANSIENT = 1 << 3,
+
+ VIR_CONNECT_LIST_FSPOOLS_AUTOSTART = 1 << 4,
+ VIR_CONNECT_LIST_FSPOOLS_NO_AUTOSTART = 1 << 5,
+
+ /* List fspools by type */
+ VIR_CONNECT_LIST_FSPOOLS_DIR = 1 << 6,
+} virConnectListAllFSPoolsFlags;
+
+typedef enum {
+ VIR_FS_XML_INACTIVE = (1 << 0), /* dump inactive fspool/item information */
+} virFsXMLFlags;
+
+
+int virConnectListAllFSPools(virConnectPtr conn,
+ virFSPoolPtr **fspools,
+ unsigned int flags);
+
+/*
+ * Lookup fspool by name or uuid
+ */
+
+virFSPoolPtr virFSPoolLookupByName(virConnectPtr conn,
+ const char *name);
+virFSPoolPtr virFSPoolLookupByUUID(virConnectPtr conn,
+ const unsigned char *uuid);
+virFSPoolPtr virFSPoolLookupByUUIDString(virConnectPtr conn,
+ const char *uuid);
+virFSPoolPtr virFSPoolLookupByItem(virFSItemPtr item);
+
+
+/*
+ * Creating/destroying fspools
+ */
+virFSPoolPtr virFSPoolCreateXML(virConnectPtr conn,
+ const char *xmlDesc,
+ unsigned int flags);
+virFSPoolPtr virFSPoolDefineXML(virConnectPtr conn,
+ const char *xmlDesc,
+ unsigned int flags);
+int virFSPoolBuild(virFSPoolPtr fspool,
+ unsigned int flags);
+int virFSPoolRefresh(virFSPoolPtr fspool,
+ unsigned int flags);
+int virFSPoolUndefine(virFSPoolPtr fspool);
+int virFSPoolCreate(virFSPoolPtr fspool,
+ unsigned int flags);
+int virFSPoolDestroy(virFSPoolPtr fspool);
+int virFSPoolDelete(virFSPoolPtr fspool,
+ unsigned int flags);
+int virFSPoolRefresh(virFSPoolPtr fspool,
+ unsigned int flags);
+int virFSPoolRef(virFSPoolPtr fspool);
+int virFSPoolFree(virFSPoolPtr fspool);
+
+/*
+ * FSPool information
+ */
+const char * virFSPoolGetName(virFSPoolPtr fspool);
+int virFSPoolGetUUID(virFSPoolPtr fspool,
+ unsigned char *uuid);
+int virFSPoolGetUUIDString(virFSPoolPtr fspool,
+ char *buf);
+
+int virFSPoolGetInfo(virFSPoolPtr pool,
+ virFSPoolInfoPtr info);
+
+char * virFSPoolGetXMLDesc(virFSPoolPtr fspool,
+ unsigned int flags);
+int virFSPoolGetAutostart(virFSPoolPtr fspool,
+ int *autostart);
+int virFSPoolSetAutostart(virFSPoolPtr fspool,
+ int autostart);
+
+
+/*
+ * List/lookup fs items within a fspool
+ */
+int virFSPoolNumOfItems(virFSPoolPtr fspool);
+int virFSPoolListItems(virFSPoolPtr fspool,
+ char **const names,
+ int maxnames);
+int virFSPoolListAllItems(virFSPoolPtr fspool,
+ virFSItemPtr **items,
+ unsigned int flags);
+
+virConnectPtr virFSItemGetConnect(virFSItemPtr item);
+
+/*
+ * Lookup itemumes based on various attributes
+ */
+virFSItemPtr virFSItemLookupByName(virFSPoolPtr fspool,
+ const char *name);
+virFSItemPtr virFSItemLookupByKey(virConnectPtr conn,
+ const char *key);
+virFSItemPtr virFSItemLookupByPath(virConnectPtr conn,
+ const char *path);
+
+
+const char * virFSItemGetName(virFSItemPtr item);
+const char * virFSItemGetKey(virFSItemPtr item);
+
+virFSItemPtr virFSItemCreateXML(virFSPoolPtr fspool,
+ const char *xmldesc,
+ unsigned int flags);
+virFSItemPtr virFSItemCreateXMLFrom(virFSPoolPtr fspool,
+ const char *xmldesc,
+ virFSItemPtr cloneitem,
+ unsigned int flags);
+
+int virFSItemDelete(virFSItemPtr item,
+ unsigned int flags);
+int virFSItemRef(virFSItemPtr item);
+int virFSItemFree(virFSItemPtr item);
+
+int virFSItemGetInfo(virFSItemPtr item,
+ virFSItemInfoPtr info);
+char * virFSItemGetXMLDesc(virFSItemPtr item,
+ unsigned int flags);
+
+char * virFSItemGetPath(virFSItemPtr item);
+
+int virFSPoolIsActive(virFSPoolPtr fspool);
+int virFSPoolIsPersistent(virFSPoolPtr fspool);
+
+
+
+#endif /* __VIR_LIBVIRT_FS_H__ */
diff --git a/include/libvirt/libvirt.h b/include/libvirt/libvirt.h
index 36f6d60..665414b 100644
--- a/include/libvirt/libvirt.h
+++ b/include/libvirt/libvirt.h
@@ -45,6 +45,7 @@ extern "C" {
# include <libvirt/libvirt-secret.h>
# include <libvirt/libvirt-storage.h>
# include <libvirt/libvirt-stream.h>
+# include <libvirt/libvirt-fs.h>
# undef __VIR_LIBVIRT_H_INCLUDES__
# ifdef __cplusplus
--
1.8.3.1
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