Add pool state /proc entry, "SUSPENDED" pools

[mirror_zfs.git] / module / zfs / spa_misc.c

diff --git a/module/zfs/spa_misc.c b/module/zfs/spa_misc.c
index 288e5378b0a01dc2ec81a3a7ae9577cb9f6212bd..6c7e2f55cd2a88065dfd0d1fdddd642adb914621 100644 (file)
--- a/module/zfs/spa_misc.c
+++ b/module/zfs/spa_misc.c
@@ -2254,6 +2254,45 @@ spa_set_missing_tvds(spa_t *spa, uint64_t missing)
        spa->spa_missing_tvds = missing;
 }
 
+/*
+ * Return the pool state string ("ONLINE", "DEGRADED", "SUSPENDED", etc).
+ */
+const char *
+spa_state_to_name(spa_t *spa)
+{
+       vdev_state_t state = spa->spa_root_vdev->vdev_state;
+       vdev_aux_t aux = spa->spa_root_vdev->vdev_stat.vs_aux;
+
+       if (spa_suspended(spa) &&
+           (spa_get_failmode(spa) != ZIO_FAILURE_MODE_CONTINUE))
+               return ("SUSPENDED");
+
+       switch (state) {
+       case VDEV_STATE_CLOSED:
+       case VDEV_STATE_OFFLINE:
+               return ("OFFLINE");
+       case VDEV_STATE_REMOVED:
+               return ("REMOVED");
+       case VDEV_STATE_CANT_OPEN:
+               if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG)
+                       return ("FAULTED");
+               else if (aux == VDEV_AUX_SPLIT_POOL)
+                       return ("SPLIT");
+               else
+                       return ("UNAVAIL");
+       case VDEV_STATE_FAULTED:
+               return ("FAULTED");
+       case VDEV_STATE_DEGRADED:
+               return ("DEGRADED");
+       case VDEV_STATE_HEALTHY:
+               return ("ONLINE");
+       default:
+               break;
+       }
+
+       return ("UNKNOWN");
+}
+
 #if defined(_KERNEL)
 
 #include <linux/mod_compat.h>
@@ -2406,6 +2445,7 @@ EXPORT_SYMBOL(spa_namespace_lock);
 EXPORT_SYMBOL(spa_trust_config);
 EXPORT_SYMBOL(spa_missing_tvds_allowed);
 EXPORT_SYMBOL(spa_set_missing_tvds);
+EXPORT_SYMBOL(spa_state_to_name);
 
 /* BEGIN CSTYLED */
 module_param(zfs_flags, uint, 0644);