Finally... Import the latest open-source ZFS version - (SPA) 28.

Few new things available from now on:

- Data deduplication.
- Triple parity RAIDZ (RAIDZ3).
- zfs diff.
- zpool split.
- Snapshot holds.
- zpool import -F. Allows to rewind corrupted pool to earlier
  transaction group.
- Possibility to import pool in read-only mode.

MFC after:	1 month

1 files changed, 75 insertions, 0 deletions

diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/holds.py b/cddl/contrib/opensolaris/lib/pyzfs/common/holds.py
new file mode 100644
index 0000000..800e28f
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/holds.py
@@ -0,0 +1,75 @@
+#! /usr/bin/python2.6
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+#
+
+"""This module implements the "zfs holds" subcommand.
+The only public interface is the zfs.holds.do_holds() function."""
+
+import optparse
+import sys
+import errno
+import time
+import zfs.util
+import zfs.dataset
+import zfs.table
+
+_ = zfs.util._
+
+def do_holds():
+	"""Implements the "zfs holds" subcommand."""
+	def usage(msg=None):
+		parser.print_help()
+		if msg:
+			print
+			parser.exit("zfs: error: " + msg)
+		else:
+			parser.exit()
+
+	u = _("""holds [-r] <snapshot> ...""")
+
+	parser = optparse.OptionParser(usage=u, prog="zfs")
+
+	parser.add_option("-r", action="store_true", dest="recursive",
+	    help=_("list holds recursively"))
+
+	(options, args) = parser.parse_args(sys.argv[2:])
+
+	if len(args) < 1:
+		usage(_("missing snapshot argument"))
+
+	fields = ("name", "tag", "timestamp")
+	rjustfields = ()
+	printing = False 
+	gotone = False
+	t = zfs.table.Table(fields, rjustfields) 
+	for ds in zfs.dataset.snapshots_fromcmdline(args, options.recursive):
+		gotone = True
+		for tag, tm in ds.get_holds().iteritems():
+			val = {"name": ds.name, "tag": tag,
+			    "timestamp": time.ctime(tm)}
+			t.addline(ds.name, val)
+			printing = True
+	if printing:
+		t.printme()
+	elif not gotone:
+		raise zfs.util.ZFSError(errno.ENOENT, _("no matching datasets"))