>Number: 167447
>Category: kern
>Synopsis: zfs rename with forced options to unmount.
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Mon Apr 30 07:50:19 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Marcelo Araujo
>Release: 10.0-CURRENT
>Organization:
FreeBSD
>Environment:
FreeBSD hosta 10.0-CURRENT FreeBSD 10.0-CURRENT #2 r233530M: Mon Apr 23
11:51:58 UTC 2012 araujo@hosta:/usr/obj/usr/src/sys/HOSTA i386
>Description:
Now is possible to use zfs rename -f to perform a force unmount.
Based on Illumos-gate commit: a0cbef703c12 by Matt Ahrens.
>How-To-Repeat:
hosta# zfs rename -fp tank/oi tank/araujo
hosta# zfs list
NAME USED AVAIL REFER MOUNTPOINT
tank 20.4M 39.1G 1.69M /tank
tank/araujo 31K 39.1G 31K /tank/araujo
tank/jail 31K 39.1G 31K /tank/jail
tank/tank1 9.73M 39.1G 1.68M /tank/tank1
>Fix:
Patch attached with submission follows:
diff -r cfd524f8839b cddl/contrib/opensolaris/cmd/zfs/zfs.8
--- a/cddl/contrib/opensolaris/cmd/zfs/zfs.8 Sat Apr 28 23:13:09 2012 +0000
+++ b/cddl/contrib/opensolaris/cmd/zfs/zfs.8 Mon Apr 30 04:42:55 2012 +0000
@@ -18,9 +18,10 @@
.\" information: Portions Copyright [yyyy] [name of copyright owner]
.\"
.\" Copyright (c) 2010, Sun Microsystems, Inc. All Rights Reserved.
-.\" Copyright (c) 2011 by Delphix. All rights reserved.
+.\" Copyright (c) 2012 by Delphix. All rights reserved.
.\" Copyright (c) 2012 Nexenta Systems, Inc. All Rights Reserved.
.\" Copyright (c) 2011, Pawel Jakub Dawidek <p...@freebsd.org>
+.\" Copyright (c) 2012, Marcelo Araujo <ara...@freebsd.org>
.\"
.\" $FreeBSD$
.\"
@@ -81,7 +82,7 @@
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot
.Nm
.Cm rename
-.Fl p
+.Fl fp
.Ar filesystem Ns | Ns Ar volume
.Ar filesystem Ns | Ns Ar volume
.Nm
@@ -1646,6 +1647,7 @@
.It Xo
.Nm
.Cm rename
+.Fl fp
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot
.Xc
@@ -1677,6 +1679,10 @@
are automatically mounted according to the
.Sy mountpoint
property inherited from their parent.
+.It Fl f
+Force
+.Sy unmount
+any filesystems that need to be unmounted in the process.
.It Fl u
Do not remount file systems during rename. If a file system's
.Sy mountpoint
diff -r cfd524f8839b cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
--- a/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c Sat Apr 28 23:13:09
2012 +0000
+++ b/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c Mon Apr 30 04:42:55
2012 +0000
@@ -22,10 +22,11 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2012 Nexenta Systems, Inc. All rights reserved.
- * Copyright (c) 2011 by Delphix. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
* Copyright (c) 2011-2012 Pawel Jakub Dawidek <pa...@dawidek.net>.
* All rights reserved.
* Copyright (c) 2011 Martin Matuska <m...@freebsd.org>. All rights reserved.
+ * Copyright (c) 2012 Marcelo Araujo <ara...@freebsd.org>. All rights reserved.
*/
#include <assert.h>
@@ -256,9 +257,9 @@
"snapshot>\n"
"\treceive [-vnFu] [-d | -e] <filesystem>\n"));
case HELP_RENAME:
- return (gettext("\trename <filesystem|volume|snapshot> "
+ return (gettext("\trename [-f] <filesystem|volume|snapshot> "
"<filesystem|volume|snapshot>\n"
- "\trename -p <filesystem|volume> <filesystem|volume>\n"
+ "\trename [-f] -p <filesystem|volume> <filesystem|volume>\n"
"\trename -r <snapshot> <snapshot>\n"
"\trename -u [-p] <filesystem> <filesystem>"));
case HELP_ROLLBACK:
@@ -3091,8 +3092,8 @@
}
/*
- * zfs rename <fs | snap | vol> <fs | snap | vol>
- * zfs rename -p <fs | vol> <fs | vol>
+ * zfs rename [-f] <fs | snap | vol> <fs | snap | vol>
+ * zfs rename [-f] -p <fs | vol> <fs | vol>
* zfs rename -r <snap> <snap>
* zfs rename -u [-p] <fs> <fs>
*
@@ -3110,9 +3111,10 @@
int ret = 0;
int types;
boolean_t parents = B_FALSE;
+ boolean_t force_unmount = B_FALSE;
/* check options */
- while ((c = getopt(argc, argv, "pru")) != -1) {
+ while ((c = getopt(argc, argv, "pruf")) != -1) {
switch (c) {
case 'p':
parents = B_TRUE;
@@ -3123,6 +3125,9 @@
case 'u':
flags.nounmount = B_TRUE;
break;
+ case 'f':
+ force_unmount = B_TRUE;
+ break;
case '?':
default:
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
@@ -3185,7 +3190,7 @@
return (1);
}
- ret = (zfs_rename(zhp, argv[1], flags) != 0);
+ ret = (zfs_rename(zhp, argv[1], flags, force_unmount) != 0);
zfs_close(zhp);
return (ret);
diff -r cfd524f8839b cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h Sat Apr 28
23:13:09 2012 +0000
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h Mon Apr 30
04:42:55 2012 +0000
@@ -543,7 +543,7 @@
int nounmount : 1;
} renameflags_t;
-extern int zfs_rename(zfs_handle_t *, const char *, renameflags_t flags);
+extern int zfs_rename(zfs_handle_t *, const char *, renameflags_t flags,
boolean_t);
typedef struct sendflags {
/* print informational messages (ie, -v was specified) */
diff -r cfd524f8839b cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c Sat Apr
28 23:13:09 2012 +0000
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c Mon Apr
30 04:42:55 2012 +0000
@@ -3594,7 +3594,8 @@
* Renames the given dataset.
*/
int
-zfs_rename(zfs_handle_t *zhp, const char *target, renameflags_t flags)
+zfs_rename(zfs_handle_t *zhp, const char *target, renameflags_t flags,
+ boolean_t force_unmount)
{
int ret;
zfs_cmd_t zc = { 0 };
@@ -3721,7 +3722,8 @@
} else {
if ((cl = changelist_gather(zhp, ZFS_PROP_NAME,
- flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0, 0)) == NULL) {
+ flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0 ||
+ (int)force_unmount ? MS_FORCE : 0, 0)) == NULL) {
return (-1);
}
>Release-Note:
>Audit-Trail:
>Unformatted:
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