On Wed, 2008-08-27 at 17:51 +0100, Daniel P. Berrange wrote:
> On Mon, Aug 25, 2008 at 10:33:45AM -0400, David Lively wrote:
> > After making the change I suggested above, it now feels a little strange
> > because "Pool" is gone from the name. I'm starting to think
> > "*Discover[Storage]PoolSources*" is the only good choice. It's rather
> > long, but makes it clear we're talking about storage pool sources (as
> > opposed to "storage sources", which feels a little ambiguous, or
> > "storage pools" which isn't accurate since they're not (yet) pools).
>
> Discover is a bit of a long word - lets use 'Find' instead, so it makes
> the API name a little shorter - and no worse than our existing longest
> API name. In other words:
>
> virConnectFindStoragePoolSources()
Sounds good. The attached patch uses this name (and others consistent
with it), and should implement all the suggestions from Daniel V and Jim
M.
Thanks again to all three of you for the helpful comments.
Dave
diff --git a/configure.in b/configure.in
index 9479f1c..430a097 100644
--- a/configure.in
+++ b/configure.in
@@ -671,6 +671,11 @@ if test "$with_storage_fs" = "yes" -o "$with_storage_fs" = "check"; then
fi
fi
AM_CONDITIONAL([WITH_STORAGE_FS], [test "$with_storage_fs" = "yes"])
+if test "$with_storage_fs" = "yes"; then
+ AC_PATH_PROG([SHOWMOUNT], [showmount], [], [$PATH:/sbin:/usr/sbin])
+ AC_DEFINE_UNQUOTED([SHOWMOUNT], ["$SHOWMOUNT"],
+ [Location or name of the showmount program])
+fi
AC_PATH_PROG([QEMU_IMG], [qemu-img], [], [$PATH:/sbin:/usr/sbin:/bin:/usr/bin])
if test -n "$QEMU_IMG" ; then
diff --git a/include/libvirt/libvirt.h b/include/libvirt/libvirt.h
index 9c3e1c2..05cb68b 100644
--- a/include/libvirt/libvirt.h
+++ b/include/libvirt/libvirt.h
@@ -890,6 +890,14 @@ int virConnectListDefinedStoragePools(virConnectPtr conn,
int maxnames);
/*
+ * Query a host for storage pools of a particular type
+ */
+char * virConnectFindStoragePoolSources(virConnectPtr conn,
+ const char *type,
+ const char *srcSpec,
+ unsigned int flags);
+
+/*
* Lookup pool by name or uuid
*/
virStoragePoolPtr virStoragePoolLookupByName (virConnectPtr conn,
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index f077a26..b91d729 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -890,6 +890,14 @@ int virConnectListDefinedStoragePools(virConnectPtr conn,
int maxnames);
/*
+ * Query a host for storage pools of a particular type
+ */
+char * virConnectFindStoragePoolSources(virConnectPtr conn,
+ const char *type,
+ const char *srcSpec,
+ unsigned int flags);
+
+/*
* Lookup pool by name or uuid
*/
virStoragePoolPtr virStoragePoolLookupByName (virConnectPtr conn,
diff --git a/libvirt.spec.in b/libvirt.spec.in
index d37c0e0..bac84a5 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -55,6 +55,9 @@ Requires: PolicyKit >= 0.6
%endif
# For mount/umount in FS driver
BuildRequires: util-linux
+# For showmount in FS driver (netfs discovery)
+BuildRequires: nfs-utils
+Requires: nfs-utils
%if %{with_qemu}
# From QEMU RPMs
Requires: /usr/bin/qemu-img
diff --git a/qemud/remote.c b/qemud/remote.c
index b5a6ec9..3e43dcf 100644
--- a/qemud/remote.c
+++ b/qemud/remote.c
@@ -2958,6 +2958,27 @@ remoteDispatchListStoragePools (struct qemud_server *server ATTRIBUTE_UNUSED,
}
static int
+remoteDispatchFindStoragePoolSources (struct qemud_server *server ATTRIBUTE_UNUSED,
+ struct qemud_client *client,
+ remote_message_header *req,
+ remote_find_storage_pool_sources_args *args,
+ remote_find_storage_pool_sources_ret *ret)
+{
+ CHECK_CONN(client);
+
+ ret->xml =
+ virConnectFindStoragePoolSources (client->conn,
+ args->type,
+ args->srcSpec ? *args->srcSpec : NULL,
+ args->flags);
+ if (ret->xml == NULL)
+ return -1;
+
+ return 0;
+}
+
+
+static int
remoteDispatchStoragePoolCreate (struct qemud_server *server ATTRIBUTE_UNUSED,
struct qemud_client *client,
remote_message_header *req,
diff --git a/qemud/remote_dispatch_localvars.h b/qemud/remote_dispatch_localvars.h
index d889c8a..18d71e9 100644
--- a/qemud/remote_dispatch_localvars.h
+++ b/qemud/remote_dispatch_localvars.h
@@ -80,6 +80,8 @@ remote_domain_resume_args lv_remote_domain_resume_args;
remote_network_get_bridge_name_args lv_remote_network_get_bridge_name_args;
remote_network_get_bridge_name_ret lv_remote_network_get_bridge_name_ret;
remote_domain_destroy_args lv_remote_domain_destroy_args;
+remote_find_storage_pool_sources_args lv_remote_find_storage_pool_sources_args;
+remote_find_storage_pool_sources_ret lv_remote_find_storage_pool_sources_ret;
remote_auth_sasl_step_args lv_remote_auth_sasl_step_args;
remote_auth_sasl_step_ret lv_remote_auth_sasl_step_ret;
remote_domain_migrate_finish_args lv_remote_domain_migrate_finish_args;
diff --git a/qemud/remote_dispatch_proc_switch.h b/qemud/remote_dispatch_proc_switch.h
index ebb2433..767b142 100644
--- a/qemud/remote_dispatch_proc_switch.h
+++ b/qemud/remote_dispatch_proc_switch.h
@@ -335,6 +335,15 @@ case REMOTE_PROC_DOMAIN_UNDEFINE:
args = (char *) &lv_remote_domain_undefine_args;
memset (&lv_remote_domain_undefine_args, 0, sizeof lv_remote_domain_undefine_args);
break;
+case REMOTE_PROC_FIND_STORAGE_POOL_SOURCES:
+ fn = (dispatch_fn) remoteDispatchFindStoragePoolSources;
+ args_filter = (xdrproc_t) xdr_remote_find_storage_pool_sources_args;
+ args = (char *) &lv_remote_find_storage_pool_sources_args;
+ memset (&lv_remote_find_storage_pool_sources_args, 0, sizeof lv_remote_find_storage_pool_sources_args);
+ ret_filter = (xdrproc_t) xdr_remote_find_storage_pool_sources_ret;
+ ret = (char *) &lv_remote_find_storage_pool_sources_ret;
+ memset (&lv_remote_find_storage_pool_sources_ret, 0, sizeof lv_remote_find_storage_pool_sources_ret);
+ break;
case REMOTE_PROC_GET_CAPABILITIES:
fn = (dispatch_fn) remoteDispatchGetCapabilities;
ret_filter = (xdrproc_t) xdr_remote_get_capabilities_ret;
diff --git a/qemud/remote_dispatch_prototypes.h b/qemud/remote_dispatch_prototypes.h
index 1d9d794..950ad05 100644
--- a/qemud/remote_dispatch_prototypes.h
+++ b/qemud/remote_dispatch_prototypes.h
@@ -47,6 +47,7 @@ static int remoteDispatchDomainSetVcpus (struct qemud_server *server, struct qem
static int remoteDispatchDomainShutdown (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, remote_domain_shutdown_args *args, void *ret);
static int remoteDispatchDomainSuspend (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, remote_domain_suspend_args *args, void *ret);
static int remoteDispatchDomainUndefine (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, remote_domain_undefine_args *args, void *ret);
+static int remoteDispatchFindStoragePoolSources (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, remote_find_storage_pool_sources_args *args, remote_find_storage_pool_sources_ret *ret);
static int remoteDispatchGetCapabilities (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, void *args, remote_get_capabilities_ret *ret);
static int remoteDispatchGetHostname (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, void *args, remote_get_hostname_ret *ret);
static int remoteDispatchGetMaxVcpus (struct qemud_server *server, struct qemud_client *client, remote_message_header *req, remote_get_max_vcpus_args *args, remote_get_max_vcpus_ret *ret);
diff --git a/qemud/remote_protocol.c b/qemud/remote_protocol.c
index 39a20c2..ea9a160 100644
--- a/qemud/remote_protocol.c
+++ b/qemud/remote_protocol.c
@@ -1502,6 +1502,28 @@ xdr_remote_list_defined_storage_pools_ret (XDR *xdrs, remote_list_defined_storag
}
bool_t
+xdr_remote_find_storage_pool_sources_args (XDR *xdrs, remote_find_storage_pool_sources_args *objp)
+{
+
+ if (!xdr_remote_nonnull_string (xdrs, &objp->type))
+ return FALSE;
+ if (!xdr_remote_string (xdrs, &objp->srcSpec))
+ return FALSE;
+ if (!xdr_u_int (xdrs, &objp->flags))
+ return FALSE;
+ return TRUE;
+}
+
+bool_t
+xdr_remote_find_storage_pool_sources_ret (XDR *xdrs, remote_find_storage_pool_sources_ret *objp)
+{
+
+ if (!xdr_remote_nonnull_string (xdrs, &objp->xml))
+ return FALSE;
+ return TRUE;
+}
+
+bool_t
xdr_remote_storage_pool_lookup_by_uuid_args (XDR *xdrs, remote_storage_pool_lookup_by_uuid_args *objp)
{
diff --git a/qemud/remote_protocol.h b/qemud/remote_protocol.h
index 6950f83..e4b1487 100644
--- a/qemud/remote_protocol.h
+++ b/qemud/remote_protocol.h
@@ -837,6 +837,18 @@ struct remote_list_defined_storage_pools_ret {
};
typedef struct remote_list_defined_storage_pools_ret remote_list_defined_storage_pools_ret;
+struct remote_find_storage_pool_sources_args {
+ remote_nonnull_string type;
+ remote_string srcSpec;
+ u_int flags;
+};
+typedef struct remote_find_storage_pool_sources_args remote_find_storage_pool_sources_args;
+
+struct remote_find_storage_pool_sources_ret {
+ remote_nonnull_string xml;
+};
+typedef struct remote_find_storage_pool_sources_ret remote_find_storage_pool_sources_ret;
+
struct remote_storage_pool_lookup_by_uuid_args {
remote_uuid uuid;
};
@@ -1146,7 +1158,7 @@ enum remote_procedure {
REMOTE_PROC_LIST_STORAGE_POOLS = 72,
REMOTE_PROC_NUM_OF_DEFINED_STORAGE_POOLS = 73,
REMOTE_PROC_LIST_DEFINED_STORAGE_POOLS = 74,
- REMOTE_PROC_DISCOVER_STORAGE_POOLS = 75,
+ REMOTE_PROC_FIND_STORAGE_POOL_SOURCES = 75,
REMOTE_PROC_STORAGE_POOL_CREATE_XML = 76,
REMOTE_PROC_STORAGE_POOL_DEFINE_XML = 77,
REMOTE_PROC_STORAGE_POOL_CREATE = 78,
@@ -1337,6 +1349,8 @@ extern bool_t xdr_remote_list_storage_pools_ret (XDR *, remote_list_storage_poo
extern bool_t xdr_remote_num_of_defined_storage_pools_ret (XDR *, remote_num_of_defined_storage_pools_ret*);
extern bool_t xdr_remote_list_defined_storage_pools_args (XDR *, remote_list_defined_storage_pools_args*);
extern bool_t xdr_remote_list_defined_storage_pools_ret (XDR *, remote_list_defined_storage_pools_ret*);
+extern bool_t xdr_remote_find_storage_pool_sources_args (XDR *, remote_find_storage_pool_sources_args*);
+extern bool_t xdr_remote_find_storage_pool_sources_ret (XDR *, remote_find_storage_pool_sources_ret*);
extern bool_t xdr_remote_storage_pool_lookup_by_uuid_args (XDR *, remote_storage_pool_lookup_by_uuid_args*);
extern bool_t xdr_remote_storage_pool_lookup_by_uuid_ret (XDR *, remote_storage_pool_lookup_by_uuid_ret*);
extern bool_t xdr_remote_storage_pool_lookup_by_name_args (XDR *, remote_storage_pool_lookup_by_name_args*);
@@ -1516,6 +1530,8 @@ extern bool_t xdr_remote_list_storage_pools_ret ();
extern bool_t xdr_remote_num_of_defined_storage_pools_ret ();
extern bool_t xdr_remote_list_defined_storage_pools_args ();
extern bool_t xdr_remote_list_defined_storage_pools_ret ();
+extern bool_t xdr_remote_find_storage_pool_sources_args ();
+extern bool_t xdr_remote_find_storage_pool_sources_ret ();
extern bool_t xdr_remote_storage_pool_lookup_by_uuid_args ();
extern bool_t xdr_remote_storage_pool_lookup_by_uuid_ret ();
extern bool_t xdr_remote_storage_pool_lookup_by_name_args ();
diff --git a/qemud/remote_protocol.x b/qemud/remote_protocol.x
index 82bd18e..148fbd5 100644
--- a/qemud/remote_protocol.x
+++ b/qemud/remote_protocol.x
@@ -763,6 +763,16 @@ struct remote_list_defined_storage_pools_ret {
remote_nonnull_string names<REMOTE_STORAGE_POOL_NAME_LIST_MAX>;
};
+struct remote_find_storage_pool_sources_args {
+ remote_nonnull_string type;
+ remote_string srcSpec;
+ unsigned flags;
+};
+
+struct remote_find_storage_pool_sources_ret {
+ remote_nonnull_string xml;
+};
+
struct remote_storage_pool_lookup_by_uuid_args {
remote_uuid uuid;
};
@@ -1042,7 +1052,7 @@ enum remote_procedure {
REMOTE_PROC_LIST_STORAGE_POOLS = 72,
REMOTE_PROC_NUM_OF_DEFINED_STORAGE_POOLS = 73,
REMOTE_PROC_LIST_DEFINED_STORAGE_POOLS = 74,
- REMOTE_PROC_DISCOVER_STORAGE_POOLS = 75,
+ REMOTE_PROC_FIND_STORAGE_POOL_SOURCES = 75,
REMOTE_PROC_STORAGE_POOL_CREATE_XML = 76,
REMOTE_PROC_STORAGE_POOL_DEFINE_XML = 77,
REMOTE_PROC_STORAGE_POOL_CREATE = 78,
diff --git a/src/driver.h b/src/driver.h
index eb428a0..655cd05 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -444,6 +444,11 @@ typedef int
(*virDrvConnectListDefinedStoragePools) (virConnectPtr conn,
char **const names,
int maxnames);
+typedef char *
+ (*virDrvConnectFindStoragePoolSources) (virConnectPtr conn,
+ const char *type,
+ const char *srcSpec,
+ unsigned int flags);
typedef virStoragePoolPtr
(*virDrvStoragePoolLookupByName) (virConnectPtr conn,
const char *name);
@@ -548,6 +553,7 @@ struct _virStorageDriver {
virDrvConnectListStoragePools listPools;
virDrvConnectNumOfDefinedStoragePools numOfDefinedPools;
virDrvConnectListDefinedStoragePools listDefinedPools;
+ virDrvConnectFindStoragePoolSources findPoolSources;
virDrvStoragePoolLookupByName poolLookupByName;
virDrvStoragePoolLookupByUUID poolLookupByUUID;
virDrvStoragePoolLookupByVolume poolLookupByVolume;
diff --git a/src/internal.h b/src/internal.h
index 1ecec05..d96504d 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -362,4 +362,16 @@ int __virDomainMigratePrepare (virConnectPtr dconn, char **cookie, int *cookiele
int __virDomainMigratePerform (virDomainPtr domain, const char *cookie, int cookielen, const char *uri, unsigned long flags, const char *dname, unsigned long bandwidth);
virDomainPtr __virDomainMigrateFinish (virConnectPtr dconn, const char *dname, const char *cookie, int cookielen, const char *uri, unsigned long flags);
+typedef struct _virStringList virStringList;
+
+struct _virStringList {
+ char *val;
+ int len;
+ struct _virStringList *next;
+};
+
+char *virStringListJoin(const virStringList *list, const char *pre,
+ const char *post, const char *sep);
+void virStringListFree(virStringList *list);
+
#endif /* __VIR_INTERNAL_H__ */
diff --git a/src/libvirt.c b/src/libvirt.c
index c31a619..9bf9373 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -36,6 +36,7 @@
#include "uuid.h"
#include "util.h"
+#include "memory.h"
#ifdef WITH_TEST
#include "test.h"
@@ -4125,6 +4126,50 @@ virConnectListDefinedStoragePools(virConnectPtr conn,
/**
+ * virConnectFindStoragePoolSources:
+ * @conn: pointer to hypervisor connection
+ * @type: type of storage pool sources to discover
+ * @srcSpec: XML document specifying discovery source
+ * @flags: flags for discovery (unused, pass 0)
+ *
+ * Talks to a storage backend and attempts to auto-discover the set of
+ * available storage pool sources. e.g. For iSCSI this would be a set of
+ * iSCSI targets. For NFS this would be a list of exported paths. The
+ * srcSpec (optional for some storage pool types, e.g. local ones) is
+ * an instance of the storage pool's source element specifying where
+ * to look for the pools.
+ *
+ * srcSpec is not required for some types (e.g., those querying
+ * local storage resources only)
+ *
+ * Returns an xml document consisting of a SourceList element
+ * containing a source document appropriate to the given pool
+ * type for each discovered source.
+ */
+char *
+virConnectFindStoragePoolSources(virConnectPtr conn,
+ const char *type,
+ const char *srcSpec,
+ unsigned int flags)
+{
+ if (!VIR_IS_CONNECT(conn)) {
+ virLibConnError(NULL, VIR_ERR_INVALID_CONN, __FUNCTION__);
+ return NULL;
+ }
+ if (type == NULL) {
+ virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__);
+ return NULL;
+ }
+
+ if (conn->storageDriver && conn->storageDriver->findPoolSources)
+ return conn->storageDriver->findPoolSources(conn, type, srcSpec, flags);
+
+ virLibConnError (conn, VIR_ERR_NO_SUPPORT, __FUNCTION__);
+ return NULL;
+}
+
+
+/**
* virStoragePoolLookupByName:
* @conn: pointer to hypervisor connection
* @name: name of pool to fetch
@@ -5234,3 +5279,45 @@ virStorageVolGetPath(virStorageVolPtr vol)
virLibConnError (conn, VIR_ERR_NO_SUPPORT, __FUNCTION__);
return NULL;
}
+
+
+
+
+/* Not for public use. Combines the elements of a virStringList
+ * into a single string.
+ */
+char *virStringListJoin(const virStringList *list, const char *pre,
+ const char *post, const char *sep)
+{
+ size_t pre_len = strlen(pre);
+ size_t sep_len = strlen(sep);
+ size_t len = pre_len + strlen(post);
+ const virStringList *p;
+ char *retval;
+
+ for (p = list; p; p = p->next)
+ len += p->len + sep_len;
+ if (VIR_ALLOC_N(retval, len+1) < 0)
+ return NULL;
+ strcpy(retval, pre);
+ len = pre_len;
+ for (p = list; p; p = p->next) {
+ strcpy(retval + len, p->val);
+ len += p->len;
+ strcpy(retval + len, sep);
+ len += sep_len;
+ }
+ strcpy(retval + len, post);
+
+ return retval;
+}
+
+
+void virStringListFree(virStringList *list)
+{
+ while (list) {
+ virStringList *p = list->next;
+ VIR_FREE(list);
+ list = p;
+ }
+}
diff --git a/src/libvirt_sym.version b/src/libvirt_sym.version
index 6561bc9..b8c470c 100644
--- a/src/libvirt_sym.version
+++ b/src/libvirt_sym.version
@@ -107,7 +107,7 @@
virConnectNumOfDefinedStoragePools;
virConnectListStoragePools;
virConnectListDefinedStoragePools;
- virConnectDiscoverStoragePools;
+ virConnectFindStoragePoolSources;
virStoragePoolLookupByName;
virStoragePoolLookupByUUID;
virStoragePoolLookupByUUIDString;
diff --git a/src/remote_internal.c b/src/remote_internal.c
index 4d173e3..586b343 100644
--- a/src/remote_internal.c
+++ b/src/remote_internal.c
@@ -3079,6 +3079,47 @@ remoteListDefinedStoragePools (virConnectPtr conn,
return ret.names.names_len;
}
+static char *
+remoteFindStoragePoolSources (virConnectPtr conn,
+ const char *type,
+ const char *srcSpec,
+ unsigned int flags)
+{
+ remote_find_storage_pool_sources_args args;
+ remote_find_storage_pool_sources_ret ret;
+ GET_STORAGE_PRIVATE (conn, NULL);
+ const char *emptyString = "";
+ char *retval;
+
+ args.type = (char*)type;
+ /*
+ * I'd think the following would work here:
+ * args.srcSpec = (char**)&srcSpec;
+ * since srcSpec is a remote_string (not a remote_nonnull_string).
+ *
+ * But when srcSpec is NULL, this yields:
+ * libvir: Remote error : marshalling args
+ *
+ * So for now I'm working around this by turning NULL srcSpecs
+ * into empty strings.
+ */
+ args.srcSpec = srcSpec ? (char **)&srcSpec : (char **)&emptyString;
+ args.flags = flags;
+
+ memset (&ret, 0, sizeof ret);
+ if (call (conn, priv, 0, REMOTE_PROC_FIND_STORAGE_POOL_SOURCES,
+ (xdrproc_t) xdr_remote_find_storage_pool_sources_args, (char *) &args,
+ (xdrproc_t) xdr_remote_find_storage_pool_sources_ret, (char *) &ret) == -1)
+ return NULL;
+
+ retval = ret.xml;
+ ret.xml = NULL; /* To stop xdr_free free'ing it */
+
+ xdr_free ((xdrproc_t) xdr_remote_find_storage_pool_sources_ret, (char *) &ret);
+
+ return retval;
+}
+
static virStoragePoolPtr
remoteStoragePoolLookupByUUID (virConnectPtr conn,
const unsigned char *uuid)
@@ -4940,6 +4981,7 @@ static virStorageDriver storage_driver = {
.listPools = remoteListStoragePools,
.numOfDefinedPools = remoteNumOfDefinedStoragePools,
.listDefinedPools = remoteListDefinedStoragePools,
+ .findPoolSources = remoteFindStoragePoolSources,
.poolLookupByUUID = remoteStoragePoolLookupByUUID,
.poolLookupByName = remoteStoragePoolLookupByName,
.poolLookupByVolume = remoteStoragePoolLookupByVolume,
diff --git a/src/storage_backend.h b/src/storage_backend.h
index 797ca01..a06746b 100644
--- a/src/storage_backend.h
+++ b/src/storage_backend.h
@@ -63,6 +63,10 @@ struct _virStorageBackendPoolOptions {
virStoragePoolFormatFromString formatFromString;
};
+#define SOURCES_START_TAG "<sources>"
+#define SOURCES_END_TAG "</sources>"
+
+typedef char * (*virStorageBackendFindPoolSources)(virConnectPtr conn, const char *srcSpec, unsigned int flags);
typedef int (*virStorageBackendStartPool)(virConnectPtr conn, virStoragePoolObjPtr pool);
typedef int (*virStorageBackendBuildPool)(virConnectPtr conn, virStoragePoolObjPtr pool, unsigned int flags);
typedef int (*virStorageBackendRefreshPool)(virConnectPtr conn, virStoragePoolObjPtr pool);
@@ -80,6 +84,7 @@ typedef virStorageBackend *virStorageBackendPtr;
struct _virStorageBackend {
int type;
+ virStorageBackendFindPoolSources findPoolSources;
virStorageBackendStartPool startPool;
virStorageBackendBuildPool buildPool;
virStorageBackendRefreshPool refreshPool;
diff --git a/src/storage_backend_fs.c b/src/storage_backend_fs.c
index 36bfac4..63124df 100644
--- a/src/storage_backend_fs.c
+++ b/src/storage_backend_fs.c
@@ -36,11 +36,16 @@
#include <mntent.h>
#include <string.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xpath.h>
+
#include "internal.h"
#include "storage_backend_fs.h"
#include "storage_conf.h"
#include "util.h"
#include "memory.h"
+#include "xml.h"
enum {
VIR_STORAGE_POOL_FS_AUTO = 0,
@@ -442,6 +447,129 @@ static int virStorageBackendProbeFile(virConnectPtr conn,
}
#if WITH_STORAGE_FS
+struct _virNetfsDiscoverState {
+ const char *host;
+ virStringList *list;
+};
+
+typedef struct _virNetfsDiscoverState virNetfsDiscoverState;
+
+static int
+virStorageBackendFileSystemNetFindPoolSourcesFunc(virConnectPtr conn ATTRIBUTE_UNUSED,
+ virStoragePoolObjPtr pool ATTRIBUTE_UNUSED,
+ char **const groups,
+ void *data)
+{
+ virNetfsDiscoverState *state = data;
+ virStringList *newItem;
+ const char *name, *path;
+
+ path = groups[0];
+
+ name = strrchr(path, '/');
+ if (name == NULL) {
+ virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
+ _("invalid netfs path (no /): %s"), path);
+ return -1;
+ }
+ name += 1;
+ if (*name == '\0') {
+ virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR,
+ _("invalid netfs path (ends in /): %s"), path);
+ return -1;
+ }
+
+ /* Append new XML desc to list */
+
+ if (VIR_ALLOC(newItem) != 0) {
+ virStorageReportError(conn, VIR_ERR_NO_MEMORY, "%s", _("new xml desc"));
+ return -1;
+ }
+
+ if (asprintf(&newItem->val,
+ "<source><host name='%s'/><dir path='%s'/></source>",
+ state->host, path) <= 0) {
+ virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR, "%s", _("asprintf failed"));
+ VIR_FREE(newItem);
+ return -1;
+ }
+
+ newItem->len = strlen(newItem->val);
+ newItem->next = state->list;
+ state->list = newItem;
+
+ return 0;
+}
+
+static char *
+virStorageBackendFileSystemNetFindPoolSources(virConnectPtr conn,
+ const char *srcSpec,
+ unsigned int flags ATTRIBUTE_UNUSED)
+{
+ /*
+ * # showmount --no-headers -e HOSTNAME
+ * /tmp *
+ * /A dir demo1.foo.bar,demo2.foo.bar
+ *
+ * Extract directory name (including possible interior spaces ...).
+ */
+
+ const char *regexes[] = {
+ "^(/.*\\S) +\\S+$"
+ };
+ int vars[] = {
+ 1
+ };
+ xmlDocPtr doc = NULL;
+ xmlXPathContextPtr xpath_ctxt = NULL;
+ virNetfsDiscoverState state = { .host = NULL, .list = NULL };
+ const char *prog[] = { SHOWMOUNT, "--no-headers", "--exports", NULL, NULL };
+ int exitstatus;
+ char *retval = NULL;
+
+ doc = xmlReadDoc((const xmlChar *)srcSpec, "srcSpec.xml", NULL,
+ XML_PARSE_NOENT | XML_PARSE_NONET |
+ XML_PARSE_NOERROR | XML_PARSE_NOWARNING);
+ if (doc == NULL) {
+ virStorageReportError(conn, VIR_ERR_XML_ERROR, "%s", _("bad <source> spec"));
+ goto cleanup;
+ }
+
+ xpath_ctxt = xmlXPathNewContext(doc);
+ if (xpath_ctxt == NULL) {
+ virStorageReportError(conn, VIR_ERR_NO_MEMORY, "%s", _("xpath_ctxt"));
+ goto cleanup;
+ }
+
+ state.host = virXPathString(conn, "string(/source/host/@name)", xpath_ctxt);
+ if (!state.host || !state.host[0]) {
+ virStorageReportError(conn, VIR_ERR_XML_ERROR, "%s",
+ _("missing <host> in <source> spec"));
+ goto cleanup;
+ }
+ prog[3] = state.host;
+
+ if (virStorageBackendRunProgRegex(conn, NULL, prog, 1, regexes, vars,
+ virStorageBackendFileSystemNetFindPoolSourcesFunc,
+ &state, &exitstatus) < 0)
+ goto cleanup;
+
+ retval = virStringListJoin(state.list, SOURCES_START_TAG, SOURCES_END_TAG, "\n");
+ if (retval == NULL) {
+ virStorageReportError(conn, VIR_ERR_NO_MEMORY, _("retval"));
+ goto cleanup;
+ }
+
+ cleanup:
+ xmlFreeDoc(doc);
+ xmlXPathFreeContext(xpath_ctxt);
+ VIR_FREE(state.host);
+ virStringListFree(state.list);
+
+ return retval;
+}
+
+
/**
* @conn connection to report errors against
* @pool storage pool to check for status
@@ -1114,6 +1242,7 @@ virStorageBackend virStorageBackendNetFileSystem = {
.buildPool = virStorageBackendFileSystemBuild,
.startPool = virStorageBackendFileSystemStart,
+ .findPoolSources = virStorageBackendFileSystemNetFindPoolSources,
.refreshPool = virStorageBackendFileSystemRefresh,
.stopPool = virStorageBackendFileSystemStop,
.deletePool = virStorageBackendFileSystemDelete,
diff --git a/src/storage_backend_logical.c b/src/storage_backend_logical.c
index eb362c6..c30323a 100644
--- a/src/storage_backend_logical.c
+++ b/src/storage_backend_logical.c
@@ -259,6 +259,75 @@ virStorageBackendLogicalRefreshPoolFunc(virConnectPtr conn ATTRIBUTE_UNUSED,
static int
+virStorageBackendLogicalFindPoolSourcesFunc(virConnectPtr conn ATTRIBUTE_UNUSED,
+ virStoragePoolObjPtr pool ATTRIBUTE_UNUSED,
+ char **const groups,
+ void *data)
+{
+ virStringList **rest = data;
+ virStringList *newItem;
+ const char *name = groups[0];
+
+ /* Append new XML desc to list */
+
+ if (VIR_ALLOC(newItem) != 0) {
+ virStorageReportError(conn, VIR_ERR_NO_MEMORY, "%s", _("new xml desc"));
+ return -1;
+ }
+
+ if (asprintf(&newItem->val, "<source><name>%s</name></source>", name) <= 0) {
+ virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR, "%s", _("asprintf failed"));
+ VIR_FREE(newItem);
+ return -1;
+ }
+
+ newItem->len = strlen(newItem->val);
+ newItem->next = *rest;
+ *rest = newItem;
+
+ return 0;
+}
+
+static char *
+virStorageBackendLogicalFindPoolSources(virConnectPtr conn,
+ const char *srcSpec ATTRIBUTE_UNUSED,
+ unsigned int flags ATTRIBUTE_UNUSED)
+{
+ /*
+ * # sudo vgs --noheadings -o vg_name
+ * VolGroup00
+ * VolGroup01
+ */
+ const char *regexes[] = {
+ "^\\s*(\\S+)\\s*$"
+ };
+ int vars[] = {
+ 1
+ };
+ virStringList *descs = NULL;
+ const char *prog[] = { VGS, "--noheadings", "-o", "vg_name", NULL };
+ int exitstatus;
+ char *retval = NULL;
+
+ if (virStorageBackendRunProgRegex(conn, NULL, prog, 1, regexes, vars,
+ virStorageBackendLogicalFindPoolSourcesFunc,
+ &descs, &exitstatus) < 0)
+ return NULL;
+
+ retval = virStringListJoin(descs, SOURCES_START_TAG, SOURCES_END_TAG, "\n");
+ if (retval == NULL) {
+ virStorageReportError(conn, VIR_ERR_NO_MEMORY, _("retval"));
+ goto cleanup;
+ }
+
+ cleanup:
+ virStringListFree(descs);
+
+ return retval;
+}
+
+
+static int
virStorageBackendLogicalStartPool(virConnectPtr conn,
virStoragePoolObjPtr pool)
{
@@ -537,6 +606,7 @@ virStorageBackendLogicalDeleteVol(virConnectPtr conn,
virStorageBackend virStorageBackendLogical = {
.type = VIR_STORAGE_POOL_LOGICAL,
+ .findPoolSources = virStorageBackendLogicalFindPoolSources,
.startPool = virStorageBackendLogicalStartPool,
.buildPool = virStorageBackendLogicalBuildPool,
.refreshPool = virStorageBackendLogicalRefreshPool,
diff --git a/src/storage_driver.c b/src/storage_driver.c
index 45f2635..ec0b37f 100644
--- a/src/storage_driver.c
+++ b/src/storage_driver.c
@@ -386,6 +386,30 @@ storageListDefinedPools(virConnectPtr conn,
return -1;
}
+static char *
+storageFindPoolSources(virConnectPtr conn,
+ const char *type,
+ const char *srcSpec,
+ unsigned int flags)
+{
+ int backend_type;
+ virStorageBackendPtr backend;
+
+ backend_type = virStorageBackendFromString(type);
+ if (backend_type < 0)
+ return NULL;
+
+ backend = virStorageBackendForType(backend_type);
+ if (backend == NULL)
+ return NULL;
+
+ if (backend->findPoolSources)
+ return backend->findPoolSources(conn, srcSpec, flags);
+
+ return NULL;
+}
+
+
static virStoragePoolPtr
storagePoolCreate(virConnectPtr conn,
const char *xml,
@@ -1212,6 +1236,7 @@ static virStorageDriver storageDriver = {
storageListPools,
storageNumDefinedPools,
storageListDefinedPools,
+ storageFindPoolSources,
storagePoolLookupByName,
storagePoolLookupByUUID,
storagePoolLookupByVolume,
diff --git a/src/virsh.c b/src/virsh.c
index 67d9658..eb5c659 100644
--- a/src/virsh.c
+++ b/src/virsh.c
@@ -3422,6 +3422,139 @@ cmdPoolList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
return TRUE;
}
+/*
+ * "find-storage-pool-sources-as" command
+ */
+static const vshCmdInfo info_find_storage_pool_sources_as[] = {
+ {"syntax", "find-storage-pool-sources-as <type> [options]"},
+ {"help", gettext_noop("find potential storage pool sources")},
+ {"desc", gettext_noop("Returns XML <sources> document.")},
+ {NULL, NULL}
+};
+
+static const vshCmdOptDef opts_find_storage_pool_sources_as[] = {
+ {"type", VSH_OT_DATA, VSH_OFLAG_REQ,
+ gettext_noop("type of storage pool sources to find")},
+ {"host", VSH_OT_DATA, VSH_OFLAG_NONE, gettext_noop("optional host to query")},
+ {"port", VSH_OT_DATA, VSH_OFLAG_NONE, gettext_noop("optional port to query")},
+ {NULL, 0, 0, NULL}
+};
+
+static int
+cmdPoolDiscoverSourcesAs(vshControl * ctl, const vshCmd * cmd ATTRIBUTE_UNUSED)
+{
+ char *type, *host;
+ char *srcSpec = NULL;
+ char *srcList;
+ int found;
+
+ type = vshCommandOptString(cmd, "type", &found);
+ if (!found)
+ return FALSE;
+ host = vshCommandOptString(cmd, "host", &found);
+ if (!found)
+ host = NULL;
+
+ if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
+ return FALSE;
+
+ if (host) {
+ size_t hostlen = strlen(host);
+ char *port = vshCommandOptString(cmd, "port", &found);
+ int ret;
+ if (!found) {
+ port = strrchr(host, ':');
+ if (port) {
+ if (*(++port))
+ hostlen = port - host - 1;
+ else
+ port = NULL;
+ }
+ }
+ ret = port ?
+ asprintf(&srcSpec,
+ "<source><host name='%.*s' port='%s'/></source>",
+ (int)hostlen, host, port) :
+ asprintf(&srcSpec,
+ "<source><host name='%.*s'/></source>",
+ (int)hostlen, host);
+ if (ret < 0) {
+ switch (errno) {
+ case ENOMEM:
+ vshError(ctl, FALSE, "%s", _("Out of memory"));
+ break;
+ default:
+ vshError(ctl, FALSE, _("asprintf failed (errno %d)"), errno);
+ }
+ return FALSE;
+ }
+ }
+
+ srcList = virConnectFindStoragePoolSources(ctl->conn, type, srcSpec, 0);
+ free(srcSpec);
+ if (srcList == NULL) {
+ vshError(ctl, FALSE, _("Failed to find any %s pool sources"), type);
+ return FALSE;
+ }
+ vshPrint(ctl, "%s", srcList);
+ free(srcList);
+
+ return TRUE;
+}
+
+
+/*
+ * "find-storage-pool-sources" command
+ */
+static const vshCmdInfo info_find_storage_pool_sources[] = {
+ {"syntax", "find-storage-pool-sources <type> [srcSpec]"},
+ {"help", gettext_noop("discover potential storage pool sources")},
+ {"desc", gettext_noop("Returns XML <sources> document.")},
+ {NULL, NULL}
+};
+
+static const vshCmdOptDef opts_find_storage_pool_sources[] = {
+ {"type", VSH_OT_DATA, VSH_OFLAG_REQ,
+ gettext_noop("type of storage pool sources to discover")},
+ {"srcSpec", VSH_OT_DATA, VSH_OFLAG_NONE,
+ gettext_noop("optional file of source xml to query for pools")},
+ {NULL, 0, 0, NULL}
+};
+
+static int
+cmdPoolDiscoverSources(vshControl * ctl, const vshCmd * cmd ATTRIBUTE_UNUSED)
+{
+ char *type, *srcSpec, *srcSpecFile, *srcList;
+ int found;
+
+ type = vshCommandOptString(cmd, "type", &found);
+ if (!found)
+ return FALSE;
+ srcSpecFile = vshCommandOptString(cmd, "srcSpec", &found);
+ if (!found) {
+ srcSpecFile = NULL;
+ srcSpec = NULL;
+ }
+
+ if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
+ return FALSE;
+
+ if (srcSpecFile && virFileReadAll(srcSpecFile, VIRSH_MAX_XML_FILE, &srcSpec) < 0)
+ return FALSE;
+
+ srcList = virConnectFindStoragePoolSources(ctl->conn, type, srcSpec, 0);
+ free(srcSpec);
+ if (srcList == NULL) {
+ vshError(ctl, FALSE, _("Failed to find any %s pool sources"), type);
+ return FALSE;
+ }
+ vshPrint(ctl, "%s", srcList);
+ free(srcList);
+
+ return TRUE;
+}
+
+
static double
prettyCapacity(unsigned long long val,
const char **unit) {
@@ -5362,6 +5495,10 @@ static const vshCmdDef commands[] = {
{"domifstat", cmdDomIfstat, opts_domifstat, info_domifstat},
{"dumpxml", cmdDumpXML, opts_dumpxml, info_dumpxml},
{"edit", cmdEdit, opts_edit, info_edit},
+ {"find-storage-pool-sources", cmdPoolDiscoverSources,
+ opts_find_storage_pool_sources, info_find_storage_pool_sources},
+ {"find-storage-pool-sources-as", cmdPoolDiscoverSourcesAs,
+ opts_find_storage_pool_sources_as, info_find_storage_pool_sources_as},
{"freecell", cmdFreecell, opts_freecell, info_freecell},
{"hostname", cmdHostname, NULL, info_hostname},
{"list", cmdList, opts_list, info_list},
--
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