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Include Peter Wemm's renaming and restructuring

Browse Source 
Change from lkm to kld

Add field plexsdno to sd struct

Add flag VF_NEWBORN to drive, sd, plex and volume structs, indicating
that the object has just been created.

Add object types for raw (unattached) plexes and subdisks

Remove definitions of VOLNO, PLEXNO and SDNO (now functions Volno,
Plexno and Sdno)

Move revive parameters from struct plex to struct sd.

struct plex:
  maintain a count of the number of inaccessible subdisks.
  remove defective and unmapped regions.

Debug flags: make an enum (previously #define)

Set default revive block size to 64kB (was 32 kB)
This commit is contained in:
Greg Lehey 1999-01-21 00:41:58 +00:00
parent 5d6f3129b1
commit 33953e5e97
1 changed files with 59 additions and 47 deletions
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106
sys/dev/vinum/vinumvar.h
View File

@ -33,13 +33,9 @@
* 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 1.5 1998/12/28 04:56:24 peter Exp $
* $Id: vinumvar.h,v 1.18 1999/01/15 06:00:24 grog Exp grog $
*/
/* XXX gdb can't find our global pointers, so use this kludge to
* point to them locally. Remove after testing */
#define BROKEN_GDB struct _vinum_conf *VC = &vinum_conf
#include <sys/time.h>
#include <dev/vinum/vinumstate.h>
/* Some configuration maxima. They're an enum because
@ -65,6 +61,8 @@ enum constants {
VINUM_SD_TYPE = 2,
VINUM_DRIVE_TYPE = 3,
VINUM_SUPERDEV_TYPE = 4, /* super device. */
VINUM_RAWPLEX_TYPE = 5, /* anonymous plex */
VINUM_RAWSD_TYPE = 6, /* anonymous subdisk */
/* Shifts for the individual fields in the device */
VINUM_TYPE_SHIFT = 28,
@ -74,6 +72,12 @@ enum constants {
VINUM_VOL_WIDTH = 8,
VINUM_PLEX_WIDTH = 3,
VINUM_SD_WIDTH = 8,
/* Shifts for the second half of raw plex and
* subdisk numbers */
VINUM_RAWPLEX_SHIFT = 8, /* shift the second half this much */
VINUM_RAWPLEX_WIDTH = 12, /* width of second half */
MAJORDEV_SHIFT = 8,
MAXPLEX = 8, /* maximum number of plexes in a volume */
@ -92,6 +96,16 @@ enum constants {
| (s << VINUM_SD_SHIFT) \
| (t << VINUM_TYPE_SHIFT) )
/* Create a bit mask for x bits */
#define MASK(x) ((1 << (x)) - 1)
/* Create a raw block device number */
#define VINUMRBDEV(d,t) ((BDEV_MAJOR << MAJORDEV_SHIFT) \
| ((d & MASK (VINUM_VOL_WIDTH)) << VINUM_VOL_SHIFT) \
| ((d & ~MASK (VINUM_VOL_WIDTH)) \
<< (VINUM_PLEX_SHIFT + VINUM_VOL_WIDTH)) \
| (t << VINUM_TYPE_SHIFT) )
/* And a character device number */
#define VINUMCDEV(v,p,s,t) ((CDEV_MAJOR << MAJORDEV_SHIFT) \
| (v << VINUM_VOL_SHIFT) \
@ -102,18 +116,6 @@ enum constants {
/* extract device type */
#define DEVTYPE(x) ((x >> VINUM_TYPE_SHIFT) & 7)
/* extract volume number */
#define VOLNO(x) (x & ((1 << VINUM_VOL_WIDTH) - 1))
/* extract plex number */
#define PLEXNO(x) (VOL [VOLNO (x)].plex [(x >> VINUM_PLEX_SHIFT) & ((1 << VINUM_PLEX_WIDTH) - 1)])
/* extract subdisk number */
#define SDNO(x) (PLEX [PLEXNO (x)].sdnos [(x >> VINUM_SD_SHIFT) & ((1 << VINUM_SD_WIDTH) - 1)])
/* extract drive number */
#define DRIVENO(x) (SD [SDNO (x)].driveno)
VINUM_SUPERDEV = VINUMBDEV(0, 0, 0, VINUM_SUPERDEV_TYPE), /* superdevice number */
/* the number of object entries to cater for initially, and also the
@ -132,7 +134,7 @@ enum constants {
INITIAL_DRIVE_FREELIST = 16, /* number of entries in drive freelist */
PLEX_REGION_TABLE_SIZE = 8, /* number of entries in plex region tables */
INITIAL_LOCKS = 8, /* number of locks to allocate to a volume */
DEFAULT_REVIVE_BLOCKSIZE = 32768, /* size of block to transfer in one op */
DEFAULT_REVIVE_BLOCKSIZE = 65536, /* size of block to transfer in one op */
VINUMHOSTNAMELEN = 32, /* host name field in label */
};
@ -145,7 +147,15 @@ enum constants {
* |-----------------------------------------------------------------------------------------------|
*
* 0x2 03 1 19 06
*
* The fields in the minor number are interpreted as follows:
*
* Volume: Only type and volume number are relevant
* Plex in volume: type, plex number in volume and volume number are relevant
* raw plex: type, plex number is made of bits 27-16 and 7-0
* raw subdisk: type, subdisk number is made of bits 27-16 and 7-0
*/
struct devcode {
/* CARE. These fields assume a big-endian word. On a
* little-endian system, they're the wrong way around */
@ -160,7 +170,9 @@ struct devcode {
VINUM_PLEX = 1,
VINUM_SUBDISK = 2,
VINUM_DRIVE = 3,
VINUM_SUPERDEV = 4, */
VINUM_SUPERDEV = 4,
VINUM_RAWPLEX = 5,
VINUM_RAWSD = 6 */
unsigned signbit:1; /* to make 32 bits */
};
@ -187,7 +199,8 @@ enum objflags {
VF_CONFIG_SETUPSTATE = 0x2000, /* set a volume up if all plexes are empty */
VF_READING_CONFIG = 0x4000, /* we're reading config database from disk */
VF_KERNELOP = 0x8000, /* we're performing ops from kernel space */
VF_DIRTYCONFIG = 0x10000, /* config needs updating */
VF_NEWBORN = 0x10000, /* for objects: we've just created it */
VF_CONFIGURED = 0x20000, /* for drives: we read the config */
};
/* Global configuration information for the vinum subsystem */
@ -300,9 +313,11 @@ enum drive_label_info {
struct drive {
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 */
@ -330,18 +345,31 @@ struct drive {
struct sd {
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 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) */
int pid; /* pid of process which opened us */
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 */
struct request *waitlist; /* list of requests waiting on revive op */
char name[MAXSDNAME]; /* name of subdisk */
};
@ -355,16 +383,10 @@ enum plexorg {
plex_raid5 /* RAID5 plex */
};
/* Region in plex (either defective or unmapped) */
struct plexregion {
u_int64_t offset; /* start of region */
u_int64_t length; /* length */
};
struct plex {
enum plexorg organization; /* Plex organization */
enum plexstate state; /* and current state */
u_int64_t length; /* total length of plex (max offset) */
u_int64_t length; /* total length of plex (max offset, in blocks) */
int flags;
int stripesize; /* size of stripe or raid band, in sectors */
int subdisks; /* number of associated subdisks */
@ -385,18 +407,7 @@ struct plex {
u_int64_t bytes_written; /* number of bytes written */
u_int64_t multiblock; /* requests that needed more than one block */
u_int64_t multistripe; /* requests that needed more than one stripe */
/* 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 */
struct request *waitlist; /* list of requests waiting on revive op */
/* geometry control */
int defective_regions; /* number of regions which are defective */
int defective_region_count; /* number of entries in defective_region */
struct plexregion *defective_region; /* list of offset/length pairs: defective sds */
int unmapped_regions; /* number of regions which are missing */
int unmapped_region_count; /* number of entries in unmapped_region */
struct plexregion *unmapped_region; /* list of offset/length pairs: missing sds */
int sddowncount; /* number of subdisks down */
char name[MAXPLEXNAME]; /* name of plex */
};
@ -501,16 +512,17 @@ enum setstateflags {
setstate_none = 0, /* no flags */
setstate_force = 1, /* force the state change */
setstate_configuring = 2, /* we're currently configuring, don't save */
setstate_recursing = 4, /* we're called from another setstate function */
setstate_norecurse = 8, /* don't call other setstate functions */
setstate_noupdate = 16 /* don't update config */
};
#ifdef VINUMDEBUG
/* Debugging stuff */
#define DEBUG_ADDRESSES 1
#define DEBUG_NUMOUTPUT 2
#define DEBUG_RESID 4 /* go into debugger in complete_rqe */
#define DEBUG_LASTREQS 8 /* keep a circular buffer of last requests */
#define DEBUG_REMOTEGDB 256 /* go into remote gdb */
enum debugflags {
DEBUG_ADDRESSES = 1, /* show buffer information during requests */
DEBUG_NUMOUTPUT = 2, /* show the value of vp->v_numoutput */
DEBUG_RESID = 4, /* go into debugger in complete_rqe */
DEBUG_LASTREQS = 8, /* keep a circular buffer of last requests */
DEBUG_REVIVECONFLICT = 16, /* print info about revive conflicts */
DEBUG_REMOTEGDB = 256, /* go into remote gdb */
};
#endif