New file containing definitions for separate views of objects for
userland and kernel.
This commit is contained in:
Greg Lehey
parent
a4d22b8035
commit
1739a10826
275
sys/dev/vinum/vinumobj.h
Normal file
275
sys/dev/vinum/vinumobj.h
Normal file
@ -0,0 +1,275 @@
|
||||
/*-
|
||||
* Copyright (c) 1997, 1998, 1999
|
||||
* Nan Yang Computer Services Limited. All rights reserved.
|
||||
*
|
||||
* Parts copyright (c) 1997, 1998 Cybernet Corporation, NetMAX project.
|
||||
*
|
||||
* Written by Greg Lehey
|
||||
*
|
||||
* This software is distributed under the so-called ``Berkeley
|
||||
* License'':
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Nan Yang Computer
|
||||
* Services Limited.
|
||||
* 4. Neither the name of the Company nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* This software is provided ``as is'', and any express or implied
|
||||
* warranties, including, but not limited to, the implied warranties of
|
||||
* merchantability and fitness for a particular purpose are disclaimed.
|
||||
* In no event shall the company or contributors be liable for any
|
||||
* direct, indirect, incidental, special, exemplary, or consequential
|
||||
* damages (including, but not limited to, procurement of substitute
|
||||
* goods or services; loss of use, data, or profits; or business
|
||||
* interruption) however caused and on any theory of liability, whether
|
||||
* in contract, strict liability, or tort (including negligence or
|
||||
* otherwise) arising in any way out of the use of this software, even if
|
||||
* advised of the possibility of such damage.
|
||||
*
|
||||
* $Id: vinumvar.h,v 1.24 2000/03/01 02:34:57 grog Exp grog $
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
/*
|
||||
* Definitions of Vinum objects: drive, subdisk, plex and volume.
|
||||
* This file is included both by userland programs and by kernel code.
|
||||
* The userland structures are a subset of the kernel structures, and
|
||||
* all userland fields are at the beginning, so that a simple copy in
|
||||
* the length of the userland structure will be sufficient. In order
|
||||
* to perform this copy, vinumioctl must know both structures, so it
|
||||
* includes this file again with _KERNEL reset.
|
||||
*/
|
||||
|
||||
/* Global configuration information for the vinum subsystem */
|
||||
#ifdef _KERNEL
|
||||
struct _vinum_conf
|
||||
#else
|
||||
struct __vinum_conf
|
||||
#endif
|
||||
{
|
||||
int version; /* version of structures */
|
||||
#ifdef _KERNEL
|
||||
/* Pointers to vinum structures */
|
||||
struct drive *drive;
|
||||
struct sd *sd;
|
||||
struct plex *plex;
|
||||
struct volume *volume;
|
||||
#else
|
||||
/* Pointers to vinum structures */
|
||||
struct _drive *drive;
|
||||
struct _sd *sd;
|
||||
struct _plex *plex;
|
||||
struct _volume *volume;
|
||||
#endif
|
||||
|
||||
/* the number allocated */
|
||||
int drives_allocated;
|
||||
int subdisks_allocated;
|
||||
int plexes_allocated;
|
||||
int volumes_allocated;
|
||||
|
||||
/* and the number currently in use */
|
||||
int drives_used;
|
||||
int subdisks_used;
|
||||
int plexes_used;
|
||||
int volumes_used;
|
||||
|
||||
int flags;
|
||||
|
||||
#define VINUM_MAXACTIVE 30000 /* maximum number of active requests */
|
||||
int active; /* current number of requests outstanding */
|
||||
int maxactive; /* maximum number of requests ever outstanding */
|
||||
#ifdef _KERNEL
|
||||
#if VINUMDEBUG
|
||||
struct request *lastrq;
|
||||
struct buf *lastbuf;
|
||||
#endif
|
||||
#endif
|
||||
};
|
||||
|
||||
/* Use these defines to simplify code */
|
||||
#define DRIVE vinum_conf.drive
|
||||
#define SD vinum_conf.sd
|
||||
#define PLEX vinum_conf.plex
|
||||
#define VOL vinum_conf.volume
|
||||
#define VFLAGS vinum_conf.flags
|
||||
|
||||
/*
|
||||
* A drive corresponds to a disk slice. We use a different term to show
|
||||
* the difference in usage: it doesn't have to be a slice, and could
|
||||
* theoretically be a complete, unpartitioned disk
|
||||
*/
|
||||
|
||||
#ifdef _KERNEL
|
||||
struct drive
|
||||
#else
|
||||
struct _drive
|
||||
#endif
|
||||
{
|
||||
char devicename[MAXDRIVENAME]; /* name of the slice it's on */
|
||||
struct vinum_label label; /* and the label information */
|
||||
enum drivestate state; /* current state */
|
||||
int flags; /* flags */
|
||||
int subdisks_allocated; /* number of entries in sd */
|
||||
int subdisks_used; /* and the number used */
|
||||
int blocksize; /* size of fs blocks */
|
||||
int pid; /* of locker */
|
||||
u_int64_t sectors_available; /* number of sectors still available */
|
||||
int secsperblock;
|
||||
int lasterror; /* last error on drive */
|
||||
int driveno; /* index of drive in vinum_conf */
|
||||
int opencount; /* number of up subdisks */
|
||||
u_int64_t reads; /* number of reads on this drive */
|
||||
u_int64_t writes; /* number of writes on this drive */
|
||||
u_int64_t bytes_read; /* number of bytes read */
|
||||
u_int64_t bytes_written; /* number of bytes written */
|
||||
#define DRIVE_MAXACTIVE 30000 /* maximum number of active requests */
|
||||
int active; /* current number of requests outstanding */
|
||||
int maxactive; /* maximum number of requests ever outstanding */
|
||||
int freelist_size; /* number of entries alloced in free list */
|
||||
int freelist_entries; /* number of entries used in free list */
|
||||
struct drive_freelist *freelist; /* sorted list of free space on drive */
|
||||
#ifdef _KERNEL
|
||||
struct partinfo partinfo; /* partition information */
|
||||
dev_t dev; /* device information */
|
||||
#ifdef VINUMDEBUG
|
||||
char lockfilename[16]; /* name of file from which we were locked */
|
||||
int lockline; /* and the line number */
|
||||
#endif
|
||||
#endif
|
||||
};
|
||||
|
||||
#ifdef _KERNEL
|
||||
struct sd
|
||||
#else
|
||||
struct _sd
|
||||
#endif
|
||||
{
|
||||
char name[MAXSDNAME]; /* name of subdisk */
|
||||
enum sdstate state; /* state */
|
||||
int flags;
|
||||
int lasterror; /* last error occurred */
|
||||
/* offsets in blocks */
|
||||
int64_t driveoffset; /* offset on drive */
|
||||
/*
|
||||
* plexoffset is the offset from the beginning
|
||||
* of the plex to the very first part of the
|
||||
* subdisk, in sectors. For striped, RAID-4 and
|
||||
* RAID-5 plexes, only the first stripe is
|
||||
* located at this offset
|
||||
*/
|
||||
int64_t plexoffset; /* offset in plex */
|
||||
u_int64_t sectors; /* and length in sectors */
|
||||
int plexno; /* index of plex, if it belongs */
|
||||
int driveno; /* index of the drive on which it is located */
|
||||
int sdno; /* our index in vinum_conf */
|
||||
int plexsdno; /* and our number in our plex */
|
||||
/* (undefined if no plex) */
|
||||
u_int64_t reads; /* number of reads on this subdisk */
|
||||
u_int64_t writes; /* number of writes on this subdisk */
|
||||
u_int64_t bytes_read; /* number of bytes read */
|
||||
u_int64_t bytes_written; /* number of bytes written */
|
||||
/* revive parameters */
|
||||
u_int64_t revived; /* block number of current revive request */
|
||||
int revive_blocksize; /* revive block size (bytes) */
|
||||
int revive_interval; /* and time to wait between transfers */
|
||||
pid_t reviver; /* PID of reviving process */
|
||||
/* init parameters */
|
||||
u_int64_t initialized; /* block number of current init request */
|
||||
int init_blocksize; /* init block size (bytes) */
|
||||
int init_interval; /* and time to wait between transfers */
|
||||
#ifdef _KERNEL
|
||||
struct request *waitlist; /* list of requests waiting on revive op */
|
||||
dev_t dev; /* associated device */
|
||||
#endif
|
||||
};
|
||||
|
||||
#ifdef _KERNEL
|
||||
struct plex
|
||||
#else
|
||||
struct _plex
|
||||
#endif
|
||||
{
|
||||
enum plexorg organization; /* Plex organization */
|
||||
enum plexstate state; /* and current state */
|
||||
u_int64_t length; /* total length of plex (sectors) */
|
||||
int flags;
|
||||
int stripesize; /* size of stripe or raid band, in sectors */
|
||||
int subdisks; /* number of associated subdisks */
|
||||
int subdisks_allocated; /* number of subdisks allocated space for */
|
||||
int *sdnos; /* list of component subdisks */
|
||||
int plexno; /* index of plex in vinum_conf */
|
||||
int volno; /* index of volume */
|
||||
int volplexno; /* number of plex in volume */
|
||||
/* Statistics */
|
||||
u_int64_t reads; /* number of reads on this plex */
|
||||
u_int64_t writes; /* number of writes on this plex */
|
||||
u_int64_t bytes_read; /* number of bytes read */
|
||||
u_int64_t bytes_written; /* number of bytes written */
|
||||
u_int64_t recovered_reads; /* number of recovered read operations */
|
||||
u_int64_t degraded_writes; /* number of degraded writes */
|
||||
u_int64_t parityless_writes; /* number of parityless writes */
|
||||
u_int64_t multiblock; /* requests that needed more than one block */
|
||||
u_int64_t multistripe; /* requests that needed more than one stripe */
|
||||
int sddowncount; /* number of subdisks down */
|
||||
/* Lock information */
|
||||
int usedlocks; /* number currently in use */
|
||||
int lockwaits; /* and number of waits for locks */
|
||||
off_t checkblock; /* block number for parity op */
|
||||
char name[MAXPLEXNAME]; /* name of plex */
|
||||
#ifdef _KERNEL
|
||||
struct rangelock *lock; /* ranges of locked addresses */
|
||||
struct mtx lockmtx;
|
||||
dev_t dev; /* associated device */
|
||||
#endif
|
||||
};
|
||||
|
||||
#ifdef _KERNEL
|
||||
struct volume
|
||||
#else
|
||||
struct _volume
|
||||
#endif
|
||||
{
|
||||
char name[MAXVOLNAME]; /* name of volume */
|
||||
enum volumestate state; /* current state */
|
||||
int plexes; /* number of plexes */
|
||||
int preferred_plex; /* plex to read from, -1 for round-robin */
|
||||
/*
|
||||
* index of plex used for last read, for
|
||||
* round-robin.
|
||||
*/
|
||||
int last_plex_read;
|
||||
int volno; /* volume number */
|
||||
int flags; /* status and configuration flags */
|
||||
int openflags; /* flags supplied to last open(2) */
|
||||
u_int64_t size; /* size of volume */
|
||||
int blocksize; /* logical block size */
|
||||
int active; /* number of outstanding requests active */
|
||||
int subops; /* and the number of suboperations */
|
||||
/* Statistics */
|
||||
u_int64_t bytes_read; /* number of bytes read */
|
||||
u_int64_t bytes_written; /* number of bytes written */
|
||||
u_int64_t reads; /* number of reads on this volume */
|
||||
u_int64_t writes; /* number of writes on this volume */
|
||||
u_int64_t recovered_reads; /* reads recovered from another plex */
|
||||
/*
|
||||
* Unlike subdisks in the plex, space for the
|
||||
* plex pointers is static.
|
||||
*/
|
||||
int plex[MAXPLEX]; /* index of plexes */
|
||||
#ifdef _KERNEL
|
||||
struct disklabel label; /* for DIOCGPART */
|
||||
dev_t dev; /* associated device */
|
||||
#endif
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user