The zfs synctask code restructuring introduced a new bug that makes it

impossible to set quota and reservation on pools lower than version 22.
Problem has been reported and a solution discussed with vendor.

Illumos ZFS issues:
  3739 cannot set zfs quota or reservation on pool version < 22

Reviewed by:	Matthew Ahrens <mahrens@delphix.com>
Reported by:	Steve Wills <swills@FreeBSD.org>
MFC after:	3 days

2 files changed, 24 insertions, 14 deletions

diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dir.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dir.c
index 91351df..b0bac9c 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dir.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dir.c
@@ -972,12 +972,18 @@ dsl_dir_set_quota_sync(void *arg, dmu_tx_t *tx)
 
 	VERIFY0(dsl_dataset_hold(dp, ddsqra->ddsqra_name, FTAG, &ds));
 
-	dsl_prop_set_sync_impl(ds, zfs_prop_to_name(ZFS_PROP_QUOTA),
-	    ddsqra->ddsqra_source, sizeof (ddsqra->ddsqra_value), 1,
-	    &ddsqra->ddsqra_value, tx);
+	if (spa_version(dp->dp_spa) >= SPA_VERSION_RECVD_PROPS) {
+		dsl_prop_set_sync_impl(ds, zfs_prop_to_name(ZFS_PROP_QUOTA),
+		    ddsqra->ddsqra_source, sizeof (ddsqra->ddsqra_value), 1,
+		    &ddsqra->ddsqra_value, tx);
 
-	VERIFY0(dsl_prop_get_int_ds(ds,
-	    zfs_prop_to_name(ZFS_PROP_QUOTA), &newval));
+		VERIFY0(dsl_prop_get_int_ds(ds,
+		    zfs_prop_to_name(ZFS_PROP_QUOTA), &newval));
+	} else {
+		newval = ddsqra->ddsqra_value;
+		spa_history_log_internal_ds(ds, "set", tx, "%s=%lld",
+		    zfs_prop_to_name(ZFS_PROP_QUOTA), (longlong_t)newval);
+	}
 
 	dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
 	mutex_enter(&ds->ds_dir->dd_lock);
@@ -1087,12 +1093,20 @@ dsl_dir_set_reservation_sync(void *arg, dmu_tx_t *tx)
 
 	VERIFY0(dsl_dataset_hold(dp, ddsqra->ddsqra_name, FTAG, &ds));
 
-	dsl_prop_set_sync_impl(ds, zfs_prop_to_name(ZFS_PROP_RESERVATION),
-	    ddsqra->ddsqra_source, sizeof (ddsqra->ddsqra_value), 1,
-	    &ddsqra->ddsqra_value, tx);
+	if (spa_version(dp->dp_spa) >= SPA_VERSION_RECVD_PROPS) {
+		dsl_prop_set_sync_impl(ds,
+		    zfs_prop_to_name(ZFS_PROP_RESERVATION),
+		    ddsqra->ddsqra_source, sizeof (ddsqra->ddsqra_value), 1,
+		    &ddsqra->ddsqra_value, tx);
 
-	VERIFY0(dsl_prop_get_int_ds(ds,
-	    zfs_prop_to_name(ZFS_PROP_RESERVATION), &newval));
+		VERIFY0(dsl_prop_get_int_ds(ds,
+		    zfs_prop_to_name(ZFS_PROP_RESERVATION), &newval));
+	} else {
+		newval = ddsqra->ddsqra_value;
+		spa_history_log_internal_ds(ds, "set", tx, "%s=%lld",
+		    zfs_prop_to_name(ZFS_PROP_RESERVATION),
+		    (longlong_t)newval);
+	}
 
 	dsl_dir_set_reservation_sync_impl(ds->ds_dir, newval, tx);
 	dsl_dataset_rele(ds, FTAG);
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c
index 0c288b5..d7f82d5 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c
@@ -557,10 +557,6 @@ dsl_prop_set_sync_impl(dsl_dataset_t *ds, const char *propname,
 	}
 
 	if (version < SPA_VERSION_RECVD_PROPS) {
-		zfs_prop_t prop = zfs_name_to_prop(propname);
-		if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION)
-			return;
-
 		if (source & ZPROP_SRC_NONE)
 			source = ZPROP_SRC_NONE;
 		else if (source & ZPROP_SRC_RECEIVED)