bug_ebuild/gentoo/sys-fs/zfs/files/zfs-0.6.1-fix-zvol-initialization-r1.patch

diff --git a/module/zfs/spa.c b/module/zfs/spa.c
index e986e92..65f78b7 100644
--- a/module/zfs/spa.c
+++ b/module/zfs/spa.c
@@ -64,6 +64,7 @@
 #include <sys/zfs_ioctl.h>
 #include <sys/dsl_scan.h>
 #include <sys/zfeature.h>
+#include <sys/zvol.h>
 
 #ifdef	_KERNEL
 #include <sys/bootprops.h>
@@ -2856,6 +2857,7 @@ spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy,
 	spa_load_state_t state = SPA_LOAD_OPEN;
 	int error;
 	int locked = B_FALSE;
+	int firstopen = B_FALSE;
 
 	*spapp = NULL;
 
@@ -2879,6 +2881,8 @@ spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy,
 	if (spa->spa_state == POOL_STATE_UNINITIALIZED) {
 		zpool_rewind_policy_t policy;
 
+		firstopen = B_TRUE;
+
 		zpool_get_rewind_policy(nvpolicy ? nvpolicy : spa->spa_config,
 		    &policy);
 		if (policy.zrp_request & ZPOOL_DO_REWIND)
@@ -2953,6 +2957,11 @@ spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy,
 		mutex_exit(&spa_namespace_lock);
 	}
 
+#ifdef _KERNEL
+	if (firstopen)
+		zvol_create_minors(spa->spa_name);
+#endif
+
 	*spapp = spa;
 
 	return (0);
@@ -4010,6 +4019,10 @@ spa_import(const char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags)
 	mutex_exit(&spa_namespace_lock);
 	spa_history_log_version(spa, LOG_POOL_IMPORT);
 
+#ifdef _KERNEL
+	zvol_create_minors(pool);
+#endif
+
 	return (0);
 }
 
diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c
index 1226b2c..a9184a1 100644
--- a/module/zfs/zfs_ioctl.c
+++ b/module/zfs/zfs_ioctl.c
@@ -1268,9 +1268,6 @@ zfs_ioc_pool_import(zfs_cmd_t *zc)
 			error = err;
 	}
 
-	if (error == 0)
-		zvol_create_minors(zc->zc_name);
-
 	nvlist_free(config);
 
 	if (props)
diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index 43a7bb6..e35c91b 100644
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -1215,6 +1215,9 @@ zvol_alloc(dev_t dev, const char *name)
 
 	zv = kmem_zalloc(sizeof (zvol_state_t), KM_SLEEP);
 
+	spin_lock_init(&zv->zv_lock);
+	list_link_init(&zv->zv_next);
+
 	zv->zv_queue = blk_init_queue(zvol_request, &zv->zv_lock);
 	if (zv->zv_queue == NULL)
 		goto out_kmem;
@@ -1248,9 +1251,6 @@ zvol_alloc(dev_t dev, const char *name)
 	    sizeof (rl_t), offsetof(rl_t, r_node));
 	zv->zv_znode.z_is_zvol = TRUE;
 
-	spin_lock_init(&zv->zv_lock);
-	list_link_init(&zv->zv_next);
-
 	zv->zv_disk->major = zvol_major;
 	zv->zv_disk->first_minor = (dev & MINORMASK);
 	zv->zv_disk->fops = &zvol_ops;
@@ -1561,30 +1561,36 @@ zvol_init(void)
 {
 	int error;
 
+	list_create(&zvol_state_list, sizeof (zvol_state_t),
+	            offsetof(zvol_state_t, zv_next));
+	mutex_init(&zvol_state_lock, NULL, MUTEX_DEFAULT, NULL);
+
 	zvol_taskq = taskq_create(ZVOL_DRIVER, zvol_threads, maxclsyspri,
 		                  zvol_threads, INT_MAX, TASKQ_PREPOPULATE);
 	if (zvol_taskq == NULL) {
 		printk(KERN_INFO "ZFS: taskq_create() failed\n");
-		return (-ENOMEM);
+		error = -ENOMEM;
+		goto out1;
 	}
 
 	error = register_blkdev(zvol_major, ZVOL_DRIVER);
 	if (error) {
 		printk(KERN_INFO "ZFS: register_blkdev() failed %d\n", error);
-		taskq_destroy(zvol_taskq);
-		return (error);
+		goto out2;
 	}
 
 	blk_register_region(MKDEV(zvol_major, 0), 1UL << MINORBITS,
 	                    THIS_MODULE, zvol_probe, NULL, NULL);
 
-	mutex_init(&zvol_state_lock, NULL, MUTEX_DEFAULT, NULL);
-	list_create(&zvol_state_list, sizeof (zvol_state_t),
-	            offsetof(zvol_state_t, zv_next));
+	return (0);
 
-	(void) zvol_create_minors(NULL);
+out2:
+	taskq_destroy(zvol_taskq);
+out1:
+	mutex_destroy(&zvol_state_lock);
+	list_destroy(&zvol_state_list);
 
-	return (0);
+	return (error);
 }
 
 void
diff --git a/scripts/zconfig.sh b/scripts/zconfig.sh
index 141348c..281166c 100755
--- a/scripts/zconfig.sh
+++ b/scripts/zconfig.sh
@@ -264,8 +264,9 @@ test_4() {
 	zconfig_zvol_device_stat 0 ${POOL_NAME} ${FULL_ZVOL_NAME} \
 	    ${FULL_SNAP_NAME} ${FULL_CLONE_NAME} || fail 9
 
-	# Load the modules, wait 1 second for udev
+	# Load the modules, list the pools to ensure they are opened
 	${ZFS_SH} zfs="spa_config_path=${TMP_CACHE}" || fail 10
+	${ZPOOL} list &>/dev/null
 
 	# Verify the devices were created
 	zconfig_zvol_device_stat 10 ${POOL_NAME} ${FULL_ZVOL_NAME} \
diff --git a/udev/rules.d/90-zfs.rules.in b/udev/rules.d/90-zfs.rules.in
index 52e1d63..a2715d2 100644
--- a/udev/rules.d/90-zfs.rules.in
+++ b/udev/rules.d/90-zfs.rules.in
@@ -1,4 +1,4 @@
-SUBSYSTEM!="block", GOTO="zfs_end"
+SUBSYSTEM!="block|misc", GOTO="zfs_end"
 ACTION!="add|change", GOTO="zfs_end"
 
 ENV{ID_FS_TYPE}=="zfs", RUN+="/sbin/modprobe zfs"
@@ -7,4 +7,6 @@ ENV{ID_FS_TYPE}=="zfs_member", RUN+="/sbin/modprobe zfs"
 KERNEL=="null", SYMLINK+="root"
 SYMLINK=="null", SYMLINK+="root"
 
+SUBSYSTEM=="misc", KERNEL=="zfs", RUN+="@sbindir@/zpool list"
+
 LABEL="zfs_end"