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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MD_HOTSPARES_H
#define _SYS_MD_HOTSPARES_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/lvm/mdvar.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* ioctl parameter structures
*/
typedef enum set_hs_command {
ADD_HOT_SPARE, DELETE_HOT_SPARE, REPLACE_HOT_SPARE, FIX_HOT_SPARE
} set_hs_command_t;
#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack(4)
#endif
typedef struct set_hs_params {
MD_DRIVER
md_error_t mde; /* error return */
set_hs_command_t shs_cmd; /* ioctl command */
hsp_t shs_hot_spare_pool; /* hsp identifier */
md_dev64_t shs_component_old; /* dev for add, del, repl */
md_dev64_t shs_component_new; /* new dev for repl */
mdkey_t shs_key_old; /* key */
mdkey_t shs_key_new; /* new key for repl */
uint_t shs_options; /* see HS_OPT_* below */
diskaddr_t shs_start_blk; /* used by add/repl */
int shs_has_label; /* used by add/repl */
diskaddr_t shs_number_blks; /* used by add/repl */
int shs_size_option; /* big or small */
} set_hs_params_t;
#define HS_OPT_NONE 0x0000 /* Nothing special */
#define HS_OPT_FORCE 0x0001 /* force flag */
#define HS_OPT_POOL 0x0002 /* work on a hs pool */
#define HS_OPT_DRYRUN 0x0004 /* just check if operation would be possible */
typedef struct get_hs_params {
MD_DRIVER
md_error_t mde; /* error return */
mdkey_t ghs_key; /* hs name key */
md_dev64_t ghs_devnum; /* returned hs dev_t */
diskaddr_t ghs_start_blk; /* returned start blk */
diskaddr_t ghs_number_blks; /* returned # of blks */
hotspare_states_t ghs_state; /* returned state */
md_timeval32_t ghs_timestamp; /* returned timestamp */
uint_t ghs_revision; /* returned revision */
} get_hs_params_t;
typedef struct get_hsp {
hsp_t ghsp_id; /* hsp id */
int ghsp_refcount; /* # metadevices using hsp */
int ghsp_nhotspares; /* # of hs in hsp */
mdkey_t ghsp_hs_keys[1]; /* array of keys */
} get_hsp_t;
#define MD_IOCSET_HS (MDIOC_MISC|0)
#define MD_IOCGET_HS (MDIOC_MISC|1)
#define HSP_REC 1
#define HS_REC 2
/*
* Hot spare and hot spare pool data structures
* Note that hot_spare32_od is for old 32 bit format only
*/
typedef struct hot_spare32_od {
uint_t hs_revision; /* revision number */
mddb_recid_t hs_record_id; /* db record id */
caddr32_t xx_hs_next; /* hs list, link */
dev32_t hs_devnum; /* hs device number */
mdkey_t hs_key; /* namespace key */
daddr32_t hs_start_blk; /* hs starting block */
int hs_has_label; /* hs has a label */
int hs_number_blks; /* hs # of blocks */
hotspare_states_t hs_state; /* hs state */
int hs_refcount; /* # hsp using the hs */
int hs_isopen; /* is open flag */
struct timeval32 hs_timestamp; /* time of last state change */
/*
* Incore elements in this old format are not used by 64 bit kernel
* Comment out here for maintenance history
* struct hot_spare *hs_next;
*/
} hot_spare32_od_t;
#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack()
#endif
/*
* The pads are necessary for the hot_spare_t structure to be interpreted
* correctly in userland on the amd64 arch.
*/
typedef struct hot_spare {
uint_t hs_revision; /* revision number */
mddb_recid_t hs_record_id; /* db record id */
md_dev64_t hs_devnum; /* hs device number */
mdkey_t hs_key; /* namespace key */
int hs_pad1;
diskaddr_t hs_start_blk; /* hs starting block */
int hs_has_label; /* hs has a label */
int hs_pad2;
diskaddr_t hs_number_blks; /* hs # of blocks */
hotspare_states_t hs_state; /* hs state */
int hs_refcount; /* # hsp using the hs */
int hs_isopen; /* is open flag */
md_timeval32_t hs_timestamp; /* time of last state change */
/*
* Incore elements.
* they should always be at the end of this data structure.
*/
struct hot_spare *hs_next;
} hot_spare_t;
#define HS_ONDSK_STR_SIZE offsetof(hot_spare_t, hs_next)
/*
* Ondisk part of hot_spare_pool
*/
#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack(4)
#endif
typedef struct hot_spare_pool_ond {
uint_t hsp_revision;
hsp_t hsp_self_id;
mddb_recid_t hsp_record_id;
uint32_t spare[4];
int hsp_refcount;
int hsp_nhotspares;
mddb_recid_t hsp_hotspares[1];
} hot_spare_pool_ond_t;
#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack()
#endif
typedef struct hot_spare_pool {
/*
* incore only elements
*/
struct hot_spare_pool *hsp_next; /* hsp list, link */
md_link_t hsp_link; /* next hsp (for IOCGET_NEXT) */
/*
* ondisk and should be the same as hot_spare_pool_ond
*/
uint_t hsp_revision; /* revision number */
hsp_t hsp_self_id; /* hsp identifier */
mddb_recid_t hsp_record_id; /* db record id */
uint32_t spare[4];
int hsp_refcount; /* # metadevices using hsp */
int hsp_nhotspares; /* # hs in the pool */
mddb_recid_t hsp_hotspares[1]; /* array of recid's */
} hot_spare_pool_t;
#define HSP_ONDSK_STR_OFF ((off_t)(&((hot_spare_pool_t *)0)->hsp_revision))
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MD_HOTSPARES_H */
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