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authorM. Mohan Kumar <mohan@in.ibm.com>2012-11-29 21:46:07 +0530
committerVijay Bellur <vbellur@redhat.com>2012-11-29 09:39:25 -0800
commitca796eba11a3f965bfbaa9bbffb5ef00c9bbb7ad (patch)
tree26dfc9d8d2c5f0aa2cd2cfe5d590f4930bd4a7ba /xlators/mgmt/glusterd/src/glusterd-volume-ops.c
parentb7840704c2095ad64f56da8d37fbae26db3a81ac (diff)
BD Backend: Volume creation support
A new parameter type is added to volume create command. To use BD xlator one has to specify following argument in addition to normal volume create device vg brick:<VG-NAME> for example, $ gluster volume create lv_volume device vg host:/vg1 Changes from previous version * New type 'backend' added to volinfo structure to differentiate between posix and bd xlator * Most of the volume related commands are updated to handle BD xlator, like add-brick, heal-brick etc refuse to work when volume is BD xlator type * Only one VG (ie brick) can be specified for BD xlator during volume creation * volume info shows VG info if its of type BD xlator BUG: 805138 Change-Id: I0ff90aca04840c71f364fabb0ab43ce33f9278ce Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3717 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-volume-ops.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volume-ops.c65
1 files changed, 64 insertions, 1 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
index d42694353af..8c76c8f09e1 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
@@ -12,6 +12,10 @@
#include "config.h"
#endif
+#ifdef HAVE_BD_XLATOR
+#include <lvm2app.h>
+#endif
+
#include "common-utils.h"
#include "syscall.h"
#include "cli1-xdr.h"
@@ -554,6 +558,36 @@ out:
return ret;
}
+#ifdef HAVE_BD_XLATOR
+int
+glusterd_is_valid_vg (const char *name)
+{
+ lvm_t handle = NULL;
+ vg_t vg = NULL;
+ char *vg_name = NULL;
+ int retval = -1;
+
+ handle = lvm_init (NULL);
+ if (!handle) {
+ gf_log ("", GF_LOG_ERROR, "lvm_init failed");
+ return -1;
+ }
+ vg_name = gf_strdup (name);
+ vg = lvm_vg_open (handle, basename (vg_name), "r", 0);
+ if (!vg) {
+ gf_log ("", GF_LOG_ERROR, "no such vg: %s", vg_name);
+ goto out;
+ }
+ retval = 0;
+out:
+ if (vg)
+ lvm_vg_close (vg);
+ lvm_quit (handle);
+ GF_FREE (vg_name);
+ return retval;
+}
+#endif
+
/* op-sm */
int
glusterd_op_stage_create_volume (dict_t *dict, char **op_errstr)
@@ -575,7 +609,9 @@ glusterd_op_stage_create_volume (dict_t *dict, char **op_errstr)
char msg[2048] = {0};
uuid_t volume_uuid;
char *volume_uuid_str;
-
+#ifdef HAVE_BD_XLATOR
+ char *dev_type = NULL;
+#endif
this = THIS;
if (!this) {
gf_log ("glusterd", GF_LOG_ERROR,
@@ -625,6 +661,11 @@ glusterd_op_stage_create_volume (dict_t *dict, char **op_errstr)
goto out;
}
+
+#ifdef HAVE_BD_XLATOR
+ ret = dict_get_str (dict, "device", &dev_type);
+#endif
+
ret = dict_get_str (dict, "bricks", &bricks);
if (ret) {
gf_log ("", GF_LOG_ERROR, "Unable to get bricks");
@@ -670,6 +711,19 @@ glusterd_op_stage_create_volume (dict_t *dict, char **op_errstr)
goto out;
}
+#ifdef HAVE_BD_XLATOR
+ if (dev_type) {
+ ret = glusterd_is_valid_vg (brick_info->path);
+ if (ret) {
+ snprintf (msg, sizeof(msg), "invalid vg %s",
+ brick_info->path);
+ *op_errstr = gf_strdup (msg);
+ goto out;
+ }
+
+ break;
+ } else
+#endif
if (!uuid_compare (brick_info->uuid, MY_UUID)) {
ret = glusterd_brick_create_path (brick_info->hostname,
brick_info->path,
@@ -1209,6 +1263,9 @@ glusterd_op_create_volume (dict_t *dict, char **op_errstr)
char *str = NULL;
char *username = NULL;
char *password = NULL;
+#ifdef HAVE_BD_XLATOR
+ char *device = NULL;
+#endif
this = THIS;
GF_ASSERT (this);
@@ -1261,6 +1318,12 @@ glusterd_op_create_volume (dict_t *dict, char **op_errstr)
goto out;
}
+#ifdef HAVE_BD_XLATOR
+ ret = dict_get_str (dict, "device", &device);
+ if (!ret)
+ volinfo->backend = GD_VOL_BK_BD;
+#endif
+
/* replica-count 1 means, no replication, file is in one brick only */
volinfo->replica_count = 1;
/* stripe-count 1 means, no striping, file is present as a whole */