LVM2/lib/activate activate.c activate.h

LVM2/lib/activate activate.c activate.h

[wysochanski]

CVSROOT:	/cvs/lvm2
Module name:	LVM2
Changes by:	wysochanski at sourceware.org	2008-04-10 21:34:18

Modified files:
	lib/activate   : activate.c activate.h 

Log message:
	Add lv_is_active() to determine whether an lv is active.
	
	Handles non-clustered as well as clustered.  For clustered,
	the best we can do is try exclusive local activation.  If this
	succeeds, we know it is not active elsewhere in the cluster.
	Otherwise, we assume it is active elsewhere.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/activate.c.diff?cvsroot=lvm2&r1=1.134&r2=1.135
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/activate.h.diff?cvsroot=lvm2&r1=1.60&r2=1.61

--- LVM2/lib/activate/activate.c	2008/04/07 10:23:46	1.134
+++ LVM2/lib/activate/activate.c	2008/04/10 21:34:18	1.135
@@ -674,6 +674,38 @@
 }
 
 /*
+ * Determine whether an LV is active locally or in a cluster.
+ * Assumes vg lock held.
+ * Returns:
+ * 0 - not active locally or on any node in cluster
+ * 1 - active either locally or some node in the cluster
+ */
+int lv_is_active(struct logical_volume *lv)
+{
+	if (_lv_active(lv->vg->cmd, lv, 0))
+		return 1;
+
+	if (!vg_is_clustered(lv->vg))
+		return 0;
+
+	/*
+	 * FIXME: Cluster does not report per-node LV activation status.
+	 * Currently the best we can do is try exclusive local activation.
+	 * If that succeeds, we know the LV is not active elsewhere in the
+	 * cluster.
+	 */
+	if (activate_lv_excl(lv->vg->cmd, lv)) {
+		deactivate_lv(lv->vg->cmd, lv);
+		return 0;
+	}
+
+	/*
+	 * Exclusive local activation failed so assume it is active elsewhere.
+	 */
+	return 1;
+}
+
+/*
  * Returns 0 if an attempt to (un)monitor the device failed.
  * Returns 1 otherwise.
  */
--- LVM2/lib/activate/activate.h	2008/04/07 10:23:46	1.60
+++ LVM2/lib/activate/activate.h	2008/04/10 21:34:18	1.61
@@ -91,6 +91,7 @@
 int lvs_in_vg_activated_by_uuid_only(struct volume_group *vg);
 int lvs_in_vg_opened(const struct volume_group *vg);
 
+int lv_is_active(struct logical_volume *lv);
 
 int monitor_dev_for_events(struct cmd_context *cmd,
 			    struct logical_volume *lv, int do_reg);

LVM2/lib/activate activate.c activate.h

[mbroz]

CVSROOT:	/cvs/lvm2
Module name:	LVM2
Changes by:	mbroz at sourceware.org	2011-11-11 15:14:05

Modified files:
	lib/activate   : activate.c activate.h 

Log message:
	Fix function name in previous patch.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/activate.c.diff?cvsroot=lvm2&r1=1.221&r2=1.222
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/activate.h.diff?cvsroot=lvm2&r1=1.86&r2=1.87

--- LVM2/lib/activate/activate.c	2011/11/11 15:11:10	1.221
+++ LVM2/lib/activate/activate.c	2011/11/11 15:14:05	1.222
@@ -147,7 +147,7 @@
 {
 	return 0;
 }
-int dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix)
+int lvm_dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix)
 {
 	return 0;
 }
@@ -443,14 +443,14 @@
 	return r;
 }
 
-int dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix)
+int lvm_dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix)
 {
 	struct dm_task *dmt;
 	const char *uuid;
 	int r;
 
 	if (!(dmt = dm_task_create(DM_DEVICE_STATUS)))
-		return 0;
+		return_0;
 
 	if (!dm_task_set_minor(dmt, minor) ||
 	    !dm_task_set_major(dmt, major) ||
@@ -463,7 +463,7 @@
 	r = strncasecmp(uuid, prefix, strlen(prefix));
 	dm_task_destroy(dmt);
 
-	return (r == 0) ? 1 : 0;
+	return r ? 0 : 1;
 }
 
 int module_present(struct cmd_context *cmd, const char *target_name)
--- LVM2/lib/activate/activate.h	2011/11/11 15:11:10	1.86
+++ LVM2/lib/activate/activate.h	2011/11/11 15:14:05	1.87
@@ -53,7 +53,7 @@
 		   int use_modprobe);
 int target_version(const char *target_name, uint32_t *maj,
 		   uint32_t *min, uint32_t *patchlevel);
-int dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix);
+int lvm_dm_prefix_check(const char *sysfs_dir, int major, int minor, const char *prefix);
 int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
 			 struct dm_list *modules);
 int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,

LVM2/lib/activate activate.c activate.h

[zkabelac]

CVSROOT:	/cvs/lvm2
Module name:	LVM2
Changes by:	zkabelac at sourceware.org	2011-12-21 13:10:06

Modified files:
	lib/activate   : activate.c activate.h 

Log message:
	Thin add lv_thin_pool_percent

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/activate.c.diff?cvsroot=lvm2&r1=1.225&r2=1.226
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/activate/activate.h.diff?cvsroot=lvm2&r1=1.89&r2=1.90

--- LVM2/lib/activate/activate.c	2011/12/21 13:08:13	1.225
+++ LVM2/lib/activate/activate.c	2011/12/21 13:10:05	1.226
@@ -689,6 +689,30 @@
 	return lv_mirror_percent(lv->vg->cmd, lv, 0, percent, NULL);
 }
 
+/*
+ * Returns 1 if percent set, else 0 on failure.
+ */
+int lv_thin_pool_percent(const struct logical_volume *lv, percent_t *percent)
+{
+	int r;
+	struct dev_manager *dm;
+
+	if (!activation())
+		return 0;
+
+	log_debug("Checking thin pool percent for LV %s/%s", lv->vg->name, lv->name);
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
+		return_0;
+
+	if (!(r = dev_manager_thin_pool_percent(dm, lv, percent)))
+		stack;
+
+	dev_manager_destroy(dm);
+
+	return r;
+}
+
 static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv)
 {
 	struct lvinfo info;
--- LVM2/lib/activate/activate.h	2011/11/28 20:37:51	1.89
+++ LVM2/lib/activate/activate.h	2011/12/21 13:10:06	1.90
@@ -100,6 +100,7 @@
 int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
 		      int wait, percent_t *percent, uint32_t *event_nr);
 int lv_raid_percent(const struct logical_volume *lv, percent_t *percent);
+int lv_thin_pool_percent(const struct logical_volume *lv, percent_t *percent);
 
 /*
  * Return number of LVs in the VG that are active.