diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/block/rbd_types.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/block/rbd_types.h')
-rw-r--r-- | kernel/drivers/block/rbd_types.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/kernel/drivers/block/rbd_types.h b/kernel/drivers/block/rbd_types.h new file mode 100644 index 000000000..49d77cbcf --- /dev/null +++ b/kernel/drivers/block/rbd_types.h @@ -0,0 +1,81 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2004-2010 Sage Weil <sage@newdream.net> + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#ifndef CEPH_RBD_TYPES_H +#define CEPH_RBD_TYPES_H + +#include <linux/types.h> + +/* For format version 2, rbd image 'foo' consists of objects + * rbd_id.foo - id of image + * rbd_header.<id> - image metadata + * rbd_data.<id>.0000000000000000 + * rbd_data.<id>.0000000000000001 + * ... - data + * Clients do not access header data directly in rbd format 2. + */ + +#define RBD_HEADER_PREFIX "rbd_header." +#define RBD_DATA_PREFIX "rbd_data." +#define RBD_ID_PREFIX "rbd_id." + +/* + * For format version 1, rbd image 'foo' consists of objects + * foo.rbd - image metadata + * rb.<idhi>.<idlo>.00000000 + * rb.<idhi>.<idlo>.00000001 + * ... - data + * There is no notion of a persistent image id in rbd format 1. + */ + +#define RBD_SUFFIX ".rbd" + +#define RBD_DIRECTORY "rbd_directory" +#define RBD_INFO "rbd_info" + +#define RBD_DEFAULT_OBJ_ORDER 22 /* 4MB */ +#define RBD_MIN_OBJ_ORDER 16 +#define RBD_MAX_OBJ_ORDER 30 + +#define RBD_COMP_NONE 0 +#define RBD_CRYPT_NONE 0 + +#define RBD_HEADER_TEXT "<<< Rados Block Device Image >>>\n" +#define RBD_HEADER_SIGNATURE "RBD" +#define RBD_HEADER_VERSION "001.005" + +struct rbd_image_snap_ondisk { + __le64 id; + __le64 image_size; +} __attribute__((packed)); + +struct rbd_image_header_ondisk { + char text[40]; + char object_prefix[24]; + char signature[4]; + char version[8]; + struct { + __u8 order; + __u8 crypt_type; + __u8 comp_type; + __u8 unused; + } __attribute__((packed)) options; + __le64 image_size; + __le64 snap_seq; + __le32 snap_count; + __le32 reserved; + __le64 snap_names_len; + struct rbd_image_snap_ondisk snaps[0]; +} __attribute__((packed)); + + +#endif |