Prefer org.openzfs for features and properties

Moving forward, we wish to use org.openzfs (no dash) rather than
org.open-zfs or org.zfsonlinux for feature GUIDs and property names.
The existing feature GUIDs cannot be changed.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10003

include/sys/fs/zfs.h

@@ -591,8 +591,8 @@ typedef struct zpool_load_policy {
 
 /*
  * The following are configuration names used in the nvlist describing a pool's
- * configuration.  New on-disk names should be prefixed with "<reverse-DNS>:"
- * (e.g. "org.open-zfs:") to avoid conflicting names being developed
+ * configuration.  New on-disk names should be prefixed with "<reversed-DNS>:"
+ * (e.g. "org.openzfs:") to avoid conflicting names being developed
  * independently.
  */
 #define	ZPOOL_CONFIG_VERSION		"version"

man/man5/zpool-features.5

@@ -39,7 +39,7 @@ this set may include unsupported features.
 .sp
 .LP
 Every feature has a GUID of the form \fIcom.example:feature_name\fR. The
-reverse DNS name ensures that the feature's GUID is unique across all ZFS
+reversed DNS name ensures that the feature's GUID is unique across all ZFS
 implementations. When unsupported features are encountered on a pool they will
 be identified by their GUIDs. Refer to the documentation for the ZFS
 implementation that created the pool for information about those features.

module/zcommon/zfeature_common.c

@@ -259,6 +259,19 @@ zfeature_register(spa_feature_t fid, const char *guid, const char *name,
 	feature->fi_zfs_mod_supported = zfs_mod_supported_feature(guid);
 }
 
+/*
+ * Every feature has a GUID of the form com.example:feature_name.  The
+ * reversed DNS name ensures that the feature's GUID is unique across all ZFS
+ * implementations.  This allows companies to independently develop and
+ * release features.  Examples include org.delphix and org.datto.  Previously,
+ * features developed on one implementation have used that implementation's
+ * domain name (e.g. org.illumos and org.zfsonlinux).  Use of the org.openzfs
+ * domain name is recommended for new features which are developed by the
+ * OpenZFS community and its platforms.  This domain may optionally be used by
+ * companies developing features for initial release through an OpenZFS
+ * implementation.  Use of the org.openzfs domain requires reserving the
+ * feature name in advance with the OpenZFS project.
+ */
 void
 zpool_feature_init(void)
 {
@@ -548,12 +561,10 @@ zpool_feature_init(void)
 	    ZFEATURE_TYPE_BOOLEAN, project_quota_deps);
 	}
 
-	{
 	zfeature_register(SPA_FEATURE_ALLOCATION_CLASSES,
 	    "org.zfsonlinux:allocation_classes", "allocation_classes",
 	    "Support for separate allocation classes.",
 	    ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL);
-	}
 
 	zfeature_register(SPA_FEATURE_RESILVER_DEFER,
 	    "com.datto:resilver_defer", "resilver_defer",

tests/zfs-tests/tests/functional/cli_root/zfs_send/zfs_send-b.ksh

@@ -52,8 +52,8 @@ log_must zfs snapshot "$SENDFS@s1"
 log_must zfs bookmark "$SENDFS@s1" "$SENDFS#bm"
 log_must zfs snapshot "$SENDFS@s2"
 log_must zfs set "compression=gzip" $SENDFS
-log_must zfs set "org.zfsonlinux:prop=val" $SENDFS
-log_must zfs set "org.zfsonlinux:snapprop=val" "$SENDFS@s1"
+log_must zfs set "org.openzfs:prop=val" $SENDFS
+log_must zfs set "org.openzfs:snapprop=val" "$SENDFS@s1"
 
 # 2. Verify command line options interact with '-b' correctly
 typeset opts=("" "p" "Rp" "cew" "nv" "D" "DLPRcenpvw")
@@ -78,21 +78,21 @@ for opt in ${opts[@]}; do
 	# NOTE: override "received" values and set some new properties as well
 	log_must zfs set "compression=lz4" $BACKUP
 	log_must zfs set "exec=off" $BACKUP
-	log_must zfs set "org.zfsonlinux:prop=newval" $BACKUP
-	log_must zfs set "org.zfsonlinux:newprop=newval" $BACKUP
-	log_must zfs set "org.zfsonlinux:snapprop=newval" "$BACKUP@s1"
-	log_must zfs set "org.zfsonlinux:newsnapprop=newval" "$BACKUP@s1"
+	log_must zfs set "org.openzfs:prop=newval" $BACKUP
+	log_must zfs set "org.openzfs:newprop=newval" $BACKUP
+	log_must zfs set "org.openzfs:snapprop=newval" "$BACKUP@s1"
+	log_must zfs set "org.openzfs:newsnapprop=newval" "$BACKUP@s1"
 
 	# 5. Restore the "backup" dataset to a new destination
 	log_must eval "zfs send -b$opt $BACKUP@s1 | zfs recv $RESTORE"
 
 	# 6. Verify only original (received) properties are sent from "backup"
 	log_must eval "check_prop_source $RESTORE compression gzip received"
-	log_must eval "check_prop_source $RESTORE org.zfsonlinux:prop val received"
-	log_must eval "check_prop_source $RESTORE@s1 org.zfsonlinux:snapprop val received"
+	log_must eval "check_prop_source $RESTORE org.openzfs:prop val received"
+	log_must eval "check_prop_source $RESTORE@s1 org.openzfs:snapprop val received"
 	log_must eval "check_prop_source $RESTORE exec on default"
-	log_must eval "check_prop_missing $RESTORE org.zfsonlinux:newprop"
-	log_must eval "check_prop_missing $RESTORE@s1 org.zfsonlinux:newsnapprop"
+	log_must eval "check_prop_missing $RESTORE org.openzfs:newprop"
+	log_must eval "check_prop_missing $RESTORE@s1 org.openzfs:newsnapprop"
 
 	# cleanup
 	log_must zfs destroy -r $BACKUP