ia64/xen-unstable

view tools/libfsimage/zfs/zfs-include/uberblock_impl.h @ 19648:f0e2df69a8eb

x86 hvm: Allow cross-vendor migration

Intercept #UD and emulate SYSCALL/SYSENTER/SYSEXIT as necessary.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue May 26 15:01:36 2009 +0100 (2009-05-26)
parents 64f790e90d3d
children
line source
1 /*
2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19 /*
20 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
21 * Use is subject to license terms.
22 */
24 #ifndef _SYS_UBERBLOCK_IMPL_H
25 #define _SYS_UBERBLOCK_IMPL_H
27 /*
28 * The uberblock version is incremented whenever an incompatible on-disk
29 * format change is made to the SPA, DMU, or ZAP.
30 *
31 * Note: the first two fields should never be moved. When a storage pool
32 * is opened, the uberblock must be read off the disk before the version
33 * can be checked. If the ub_version field is moved, we may not detect
34 * version mismatch. If the ub_magic field is moved, applications that
35 * expect the magic number in the first word won't work.
36 */
37 #define UBERBLOCK_MAGIC 0x00bab10c /* oo-ba-bloc! */
38 #define UBERBLOCK_SHIFT 10 /* up to 1K */
40 struct uberblock {
41 uint64_t ub_magic; /* UBERBLOCK_MAGIC */
42 uint64_t ub_version; /* ZFS_VERSION */
43 uint64_t ub_txg; /* txg of last sync */
44 uint64_t ub_guid_sum; /* sum of all vdev guids */
45 uint64_t ub_timestamp; /* UTC time of last sync */
46 blkptr_t ub_rootbp; /* MOS objset_phys_t */
47 };
49 #endif /* _SYS_UBERBLOCK_IMPL_H */