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NetBSD/sys/dev/raidframe/rf_netbsdkintf.c
oster a038f90588 Kernel memory is not to be wasted. If we're bailing out because of an error, 
give any allocated memory back to the kernel so someone else can use it.
1999-12-03 03:06:44 +00:00

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/* $NetBSD: rf_netbsdkintf.c,v 1.33 1999/12/03 03:06:44 oster Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Greg Oster; Jason R. Thorpe.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION 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.
*/
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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.
*
* from: Utah $Hdr: cd.c 1.6 90/11/28$
*
* @(#)cd.c 8.2 (Berkeley) 11/16/93
*/
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Authors: Mark Holland, Jim Zelenka
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/***********************************************************
*
* rf_kintf.c -- the kernel interface routines for RAIDframe
*
***********************************************************/
#include <sys/errno.h>
#include <sys/param.h>
#include <sys/pool.h>
#include <sys/queue.h>
#include <sys/disk.h>
#include <sys/device.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/param.h>
#include <sys/types.h>
#include <machine/types.h>
#include <sys/disklabel.h>
#include <sys/conf.h>
#include <sys/lock.h>
#include <sys/buf.h>
#include <sys/user.h>
#include "raid.h"
#include "rf_raid.h"
#include "rf_raidframe.h"
#include "rf_dag.h"
#include "rf_dagflags.h"
#include "rf_diskqueue.h"
#include "rf_acctrace.h"
#include "rf_etimer.h"
#include "rf_general.h"
#include "rf_debugMem.h"
#include "rf_kintf.h"
#include "rf_options.h"
#include "rf_driver.h"
#include "rf_parityscan.h"
#include "rf_debugprint.h"
#include "rf_threadstuff.h"
int rf_kdebug_level = 0;
#ifdef DEBUG
#define db0_printf(a) printf a
#define db_printf(a) if (rf_kdebug_level > 0) printf a
#define db1_printf(a) if (rf_kdebug_level > 0) printf a
#define db2_printf(a) if (rf_kdebug_level > 1) printf a
#define db3_printf(a) if (rf_kdebug_level > 2) printf a
#define db4_printf(a) if (rf_kdebug_level > 3) printf a
#define db5_printf(a) if (rf_kdebug_level > 4) printf a
#else /* DEBUG */
#define db0_printf(a) printf a
#define db1_printf(a) { }
#define db2_printf(a) { }
#define db3_printf(a) { }
#define db4_printf(a) { }
#define db5_printf(a) { }
#endif /* DEBUG */
static RF_Raid_t **raidPtrs; /* global raid device descriptors */
RF_DECLARE_STATIC_MUTEX(rf_sparet_wait_mutex)
static RF_SparetWait_t *rf_sparet_wait_queue; /* requests to install a
* spare table */
static RF_SparetWait_t *rf_sparet_resp_queue; /* responses from
* installation process */
static struct rf_recon_req *recon_queue = NULL; /* used to communicate
* reconstruction
* requests */
decl_simple_lock_data(, recon_queue_mutex)
#define LOCK_RECON_Q_MUTEX() simple_lock(&recon_queue_mutex)
#define UNLOCK_RECON_Q_MUTEX() simple_unlock(&recon_queue_mutex)
/* prototypes */
static void KernelWakeupFunc(struct buf * bp);
static void InitBP(struct buf * bp, struct vnode *, unsigned rw_flag,
dev_t dev, RF_SectorNum_t startSect,
RF_SectorCount_t numSect, caddr_t buf,
void (*cbFunc) (struct buf *), void *cbArg,
int logBytesPerSector, struct proc * b_proc);
#define Dprintf0(s) if (rf_queueDebug) \
rf_debug_printf(s,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL)
#define Dprintf1(s,a) if (rf_queueDebug) \
rf_debug_printf(s,a,NULL,NULL,NULL,NULL,NULL,NULL,NULL)
#define Dprintf2(s,a,b) if (rf_queueDebug) \
rf_debug_printf(s,a,b,NULL,NULL,NULL,NULL,NULL,NULL)
#define Dprintf3(s,a,b,c) if (rf_queueDebug) \
rf_debug_printf(s,a,b,c,NULL,NULL,NULL,NULL,NULL)
int raidmarkclean(dev_t dev, struct vnode *b_vp, int);
int raidmarkdirty(dev_t dev, struct vnode *b_vp, int);
void raidattach __P((int));
int raidsize __P((dev_t));
void rf_DiskIOComplete(RF_DiskQueue_t *, RF_DiskQueueData_t *, int);
void rf_CopybackReconstructedData(RF_Raid_t * raidPtr);
static int raidinit __P((dev_t, RF_Raid_t *, int));
int raidopen __P((dev_t, int, int, struct proc *));
int raidclose __P((dev_t, int, int, struct proc *));
int raidioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
int raidwrite __P((dev_t, struct uio *, int));
int raidread __P((dev_t, struct uio *, int));
void raidstrategy __P((struct buf *));
int raiddump __P((dev_t, daddr_t, caddr_t, size_t));
int raidwrite_component_label(dev_t, struct vnode *, RF_ComponentLabel_t *);
int raidread_component_label(dev_t, struct vnode *, RF_ComponentLabel_t *);
void rf_update_component_labels( RF_Raid_t *);
/*
* Pilfered from ccd.c
*/
struct raidbuf {
struct buf rf_buf; /* new I/O buf. MUST BE FIRST!!! */
struct buf *rf_obp; /* ptr. to original I/O buf */
int rf_flags; /* misc. flags */
RF_DiskQueueData_t *req;/* the request that this was part of.. */
};
#define RAIDGETBUF(rs) pool_get(&(rs)->sc_cbufpool, PR_NOWAIT)
#define RAIDPUTBUF(rs, cbp) pool_put(&(rs)->sc_cbufpool, cbp)
/* XXX Not sure if the following should be replacing the raidPtrs above,
or if it should be used in conjunction with that... */
struct raid_softc {
int sc_flags; /* flags */
int sc_cflags; /* configuration flags */
size_t sc_size; /* size of the raid device */
dev_t sc_dev; /* our device.. */
char sc_xname[20]; /* XXX external name */
struct disk sc_dkdev; /* generic disk device info */
struct pool sc_cbufpool; /* component buffer pool */
};
/* sc_flags */
#define RAIDF_INITED 0x01 /* unit has been initialized */
#define RAIDF_WLABEL 0x02 /* label area is writable */
#define RAIDF_LABELLING 0x04 /* unit is currently being labelled */
#define RAIDF_WANTED 0x40 /* someone is waiting to obtain a lock */
#define RAIDF_LOCKED 0x80 /* unit is locked */
#define raidunit(x) DISKUNIT(x)
static int numraid = 0;
/*
* Allow RAIDOUTSTANDING number of simultaneous IO's to this RAID device.
* Be aware that large numbers can allow the driver to consume a lot of
* kernel memory, especially on writes, and in degraded mode reads.
*
* For example: with a stripe width of 64 blocks (32k) and 5 disks,
* a single 64K write will typically require 64K for the old data,
* 64K for the old parity, and 64K for the new parity, for a total
* of 192K (if the parity buffer is not re-used immediately).
* Even it if is used immedately, that's still 128K, which when multiplied
* by say 10 requests, is 1280K, *on top* of the 640K of incoming data.
*
* Now in degraded mode, for example, a 64K read on the above setup may
* require data reconstruction, which will require *all* of the 4 remaining
* disks to participate -- 4 * 32K/disk == 128K again.
*/
#ifndef RAIDOUTSTANDING
#define RAIDOUTSTANDING 6
#endif
#define RAIDLABELDEV(dev) \
(MAKEDISKDEV(major((dev)), raidunit((dev)), RAW_PART))
/* declared here, and made public, for the benefit of KVM stuff.. */
struct raid_softc *raid_softc;
static void raidgetdefaultlabel __P((RF_Raid_t *, struct raid_softc *,
struct disklabel *));
static void raidgetdisklabel __P((dev_t));
static void raidmakedisklabel __P((struct raid_softc *));
static int raidlock __P((struct raid_softc *));
static void raidunlock __P((struct raid_softc *));
int raidlookup __P((char *, struct proc * p, struct vnode **));
static void rf_markalldirty __P((RF_Raid_t *));
void
raidattach(num)
int num;
{
int raidID;
int i, rc;
#ifdef DEBUG
printf("raidattach: Asked for %d units\n", num);
#endif
if (num <= 0) {
#ifdef DIAGNOSTIC
panic("raidattach: count <= 0");
#endif
return;
}
/* This is where all the initialization stuff gets done. */
/* Make some space for requested number of units... */
RF_Calloc(raidPtrs, num, sizeof(RF_Raid_t *), (RF_Raid_t **));
if (raidPtrs == NULL) {
panic("raidPtrs is NULL!!\n");
}
rc = rf_mutex_init(&rf_sparet_wait_mutex);
if (rc) {
RF_PANIC();
}
rf_sparet_wait_queue = rf_sparet_resp_queue = NULL;
recon_queue = NULL;
for (i = 0; i < numraid; i++)
raidPtrs[i] = NULL;
rc = rf_BootRaidframe();
if (rc == 0)
printf("Kernelized RAIDframe activated\n");
else
panic("Serious error booting RAID!!\n");
/* put together some datastructures like the CCD device does.. This
* lets us lock the device and what-not when it gets opened. */
raid_softc = (struct raid_softc *)
malloc(num * sizeof(struct raid_softc),
M_RAIDFRAME, M_NOWAIT);
if (raid_softc == NULL) {
printf("WARNING: no memory for RAIDframe driver\n");
return;
}
numraid = num;
bzero(raid_softc, num * sizeof(struct raid_softc));
for (raidID = 0; raidID < num; raidID++) {
RF_Calloc(raidPtrs[raidID], 1, sizeof(RF_Raid_t),
(RF_Raid_t *));
if (raidPtrs[raidID] == NULL) {
printf("raidPtrs[%d] is NULL\n", raidID);
}
}
}
int
raidsize(dev)
dev_t dev;
{
struct raid_softc *rs;
struct disklabel *lp;
int part, unit, omask, size;
unit = raidunit(dev);
if (unit >= numraid)
return (-1);
rs = &raid_softc[unit];
if ((rs->sc_flags & RAIDF_INITED) == 0)
return (-1);
part = DISKPART(dev);
omask = rs->sc_dkdev.dk_openmask & (1 << part);
lp = rs->sc_dkdev.dk_label;
if (omask == 0 && raidopen(dev, 0, S_IFBLK, curproc))
return (-1);
if (lp->d_partitions[part].p_fstype != FS_SWAP)
size = -1;
else
size = lp->d_partitions[part].p_size *
(lp->d_secsize / DEV_BSIZE);
if (omask == 0 && raidclose(dev, 0, S_IFBLK, curproc))
return (-1);
return (size);
}
int
raiddump(dev, blkno, va, size)
dev_t dev;
daddr_t blkno;
caddr_t va;
size_t size;
{
/* Not implemented. */
return ENXIO;
}
/* ARGSUSED */
int
raidopen(dev, flags, fmt, p)
dev_t dev;
int flags, fmt;
struct proc *p;
{
int unit = raidunit(dev);
struct raid_softc *rs;
struct disklabel *lp;
int part, pmask;
int error = 0;
if (unit >= numraid)
return (ENXIO);
rs = &raid_softc[unit];
if ((error = raidlock(rs)) != 0)
return (error);
lp = rs->sc_dkdev.dk_label;
part = DISKPART(dev);
pmask = (1 << part);
db1_printf(("Opening raid device number: %d partition: %d\n",
unit, part));
if ((rs->sc_flags & RAIDF_INITED) &&
(rs->sc_dkdev.dk_openmask == 0))
raidgetdisklabel(dev);
/* make sure that this partition exists */
if (part != RAW_PART) {
db1_printf(("Not a raw partition..\n"));
if (((rs->sc_flags & RAIDF_INITED) == 0) ||
((part >= lp->d_npartitions) ||
(lp->d_partitions[part].p_fstype == FS_UNUSED))) {
error = ENXIO;
raidunlock(rs);
db1_printf(("Bailing out...\n"));
return (error);
}
}
/* Prevent this unit from being unconfigured while open. */
switch (fmt) {
case S_IFCHR:
rs->sc_dkdev.dk_copenmask |= pmask;
break;
case S_IFBLK:
rs->sc_dkdev.dk_bopenmask |= pmask;
break;
}
if ((rs->sc_dkdev.dk_openmask == 0) &&
((rs->sc_flags & RAIDF_INITED) != 0)) {
/* First one... mark things as dirty... Note that we *MUST*
have done a configure before this. I DO NOT WANT TO BE
SCRIBBLING TO RANDOM COMPONENTS UNTIL IT'S BEEN DETERMINED
THAT THEY BELONG TOGETHER!!!!! */
/* XXX should check to see if we're only open for reading
here... If so, we needn't do this, but then need some
other way of keeping track of what's happened.. */
rf_markalldirty( raidPtrs[unit] );
}
rs->sc_dkdev.dk_openmask =
rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask;
raidunlock(rs);
return (error);
}
/* ARGSUSED */
int
raidclose(dev, flags, fmt, p)
dev_t dev;
int flags, fmt;
struct proc *p;
{
int unit = raidunit(dev);
struct raid_softc *rs;
int error = 0;
int part;
if (unit >= numraid)
return (ENXIO);
rs = &raid_softc[unit];
if ((error = raidlock(rs)) != 0)
return (error);
part = DISKPART(dev);
/* ...that much closer to allowing unconfiguration... */
switch (fmt) {
case S_IFCHR:
rs->sc_dkdev.dk_copenmask &= ~(1 << part);
break;
case S_IFBLK:
rs->sc_dkdev.dk_bopenmask &= ~(1 << part);
break;
}
rs->sc_dkdev.dk_openmask =
rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask;
if ((rs->sc_dkdev.dk_openmask == 0) &&
((rs->sc_flags & RAIDF_INITED) != 0)) {
/* Last one... device is not unconfigured yet.
Device shutdown has taken care of setting the
clean bits if RAIDF_INITED is not set
mark things as clean... */
rf_update_component_labels( raidPtrs[unit] );
}
raidunlock(rs);
return (0);
}
void
raidstrategy(bp)
register struct buf *bp;
{
register int s;
unsigned int raidID = raidunit(bp->b_dev);
RF_Raid_t *raidPtr;
struct raid_softc *rs = &raid_softc[raidID];
struct disklabel *lp;
int wlabel;
#if 0
db1_printf(("Strategy: 0x%x 0x%x\n", bp, bp->b_data));
db1_printf(("Strategy(2): bp->b_bufsize%d\n", (int) bp->b_bufsize));
db1_printf(("bp->b_count=%d\n", (int) bp->b_bcount));
db1_printf(("bp->b_resid=%d\n", (int) bp->b_resid));
db1_printf(("bp->b_blkno=%d\n", (int) bp->b_blkno));
if (bp->b_flags & B_READ)
db1_printf(("READ\n"));
else
db1_printf(("WRITE\n"));
#endif
if ((rs->sc_flags & RAIDF_INITED) ==0) {
bp->b_error = ENXIO;
bp->b_flags = B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
return;
}
if (raidID >= numraid || !raidPtrs[raidID]) {
bp->b_error = ENODEV;
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
return;
}
raidPtr = raidPtrs[raidID];
if (!raidPtr->valid) {
bp->b_error = ENODEV;
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
return;
}
if (bp->b_bcount == 0) {
db1_printf(("b_bcount is zero..\n"));
biodone(bp);
return;
}
lp = rs->sc_dkdev.dk_label;
/*
* Do bounds checking and adjust transfer. If there's an
* error, the bounds check will flag that for us.
*/
wlabel = rs->sc_flags & (RAIDF_WLABEL | RAIDF_LABELLING);
if (DISKPART(bp->b_dev) != RAW_PART)
if (bounds_check_with_label(bp, lp, wlabel) <= 0) {
db1_printf(("Bounds check failed!!:%d %d\n",
(int) bp->b_blkno, (int) wlabel));
biodone(bp);
return;
}
s = splbio(); /* XXX Needed? */
db1_printf(("Beginning strategy...\n"));
bp->b_resid = 0;
bp->b_error = rf_DoAccessKernel(raidPtrs[raidID], bp,
NULL, NULL, NULL);
if (bp->b_error) {
bp->b_flags |= B_ERROR;
db1_printf(("bp->b_flags HAS B_ERROR SET!!!: %d\n",
bp->b_error));
}
splx(s);
#if 0
db1_printf(("Strategy exiting: 0x%x 0x%x %d %d\n",
bp, bp->b_data,
(int) bp->b_bcount, (int) bp->b_resid));
#endif
}
/* ARGSUSED */
int
raidread(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
int unit = raidunit(dev);
struct raid_softc *rs;
int part;
if (unit >= numraid)
return (ENXIO);
rs = &raid_softc[unit];
if ((rs->sc_flags & RAIDF_INITED) == 0)
return (ENXIO);
part = DISKPART(dev);
db1_printf(("raidread: unit: %d partition: %d\n", unit, part));
return (physio(raidstrategy, NULL, dev, B_READ, minphys, uio));
}
/* ARGSUSED */
int
raidwrite(dev, uio, flags)
dev_t dev;
struct uio *uio;
int flags;
{
int unit = raidunit(dev);
struct raid_softc *rs;
if (unit >= numraid)
return (ENXIO);
rs = &raid_softc[unit];
if ((rs->sc_flags & RAIDF_INITED) == 0)
return (ENXIO);
db1_printf(("raidwrite\n"));
return (physio(raidstrategy, NULL, dev, B_WRITE, minphys, uio));
}
int
raidioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
int unit = raidunit(dev);
int error = 0;
int part, pmask;
struct raid_softc *rs;
RF_Config_t *k_cfg, *u_cfg;
u_char *specific_buf;
int retcode = 0;
int row;
int column;
int s;
struct rf_recon_req *rrcopy, *rr;
RF_ComponentLabel_t *component_label;
RF_ComponentLabel_t ci_label;
RF_ComponentLabel_t **c_label_ptr;
RF_SingleComponent_t *sparePtr,*componentPtr;
RF_SingleComponent_t hot_spare;
RF_SingleComponent_t component;
if (unit >= numraid)
return (ENXIO);
rs = &raid_softc[unit];
db1_printf(("raidioctl: %d %d %d %d\n", (int) dev,
(int) DISKPART(dev), (int) unit, (int) cmd));
/* Must be open for writes for these commands... */
switch (cmd) {
case DIOCSDINFO:
case DIOCWDINFO:
case DIOCWLABEL:
if ((flag & FWRITE) == 0)
return (EBADF);
}
/* Must be initialized for these... */
switch (cmd) {
case DIOCGDINFO:
case DIOCSDINFO:
case DIOCWDINFO:
case DIOCGPART:
case DIOCWLABEL:
case DIOCGDEFLABEL:
case RAIDFRAME_SHUTDOWN:
case RAIDFRAME_REWRITEPARITY:
case RAIDFRAME_GET_INFO:
case RAIDFRAME_RESET_ACCTOTALS:
case RAIDFRAME_GET_ACCTOTALS:
case RAIDFRAME_KEEP_ACCTOTALS:
case RAIDFRAME_GET_SIZE:
case RAIDFRAME_FAIL_DISK:
case RAIDFRAME_COPYBACK:
case RAIDFRAME_CHECKRECON:
case RAIDFRAME_GET_COMPONENT_LABEL:
case RAIDFRAME_SET_COMPONENT_LABEL:
case RAIDFRAME_ADD_HOT_SPARE:
case RAIDFRAME_REMOVE_HOT_SPARE:
case RAIDFRAME_INIT_LABELS:
case RAIDFRAME_REBUILD_IN_PLACE:
case RAIDFRAME_CHECK_PARITY:
if ((rs->sc_flags & RAIDF_INITED) == 0)
return (ENXIO);
}
switch (cmd) {
/* configure the system */
case RAIDFRAME_CONFIGURE:
db3_printf(("rf_ioctl: RAIDFRAME_CONFIGURE\n"));
/* copy-in the configuration information */
/* data points to a pointer to the configuration structure */
u_cfg = *((RF_Config_t **) data);
RF_Malloc(k_cfg, sizeof(RF_Config_t), (RF_Config_t *));
if (k_cfg == NULL) {
db3_printf(("rf_ioctl: ENOMEM for config. Code is %d\n", retcode));
return (ENOMEM);
}
retcode = copyin((caddr_t) u_cfg, (caddr_t) k_cfg,
sizeof(RF_Config_t));
if (retcode) {
RF_Free(k_cfg, sizeof(RF_Config_t));
db3_printf(("rf_ioctl: retcode=%d copyin.1\n",
retcode));
return (retcode);
}
/* allocate a buffer for the layout-specific data, and copy it
* in */
if (k_cfg->layoutSpecificSize) {
if (k_cfg->layoutSpecificSize > 10000) {
/* sanity check */
RF_Free(k_cfg, sizeof(RF_Config_t));
db3_printf(("rf_ioctl: EINVAL %d\n", retcode));
return (EINVAL);
}
RF_Malloc(specific_buf, k_cfg->layoutSpecificSize,
(u_char *));
if (specific_buf == NULL) {
RF_Free(k_cfg, sizeof(RF_Config_t));
db3_printf(("rf_ioctl: ENOMEM %d\n", retcode));
return (ENOMEM);
}
retcode = copyin(k_cfg->layoutSpecific,
(caddr_t) specific_buf,
k_cfg->layoutSpecificSize);
if (retcode) {
RF_Free(k_cfg, sizeof(RF_Config_t));
RF_Free(specific_buf, k_cfg->layoutSpecificSize);
db3_printf(("rf_ioctl: retcode=%d copyin.2\n",
retcode));
return (retcode);
}
} else
specific_buf = NULL;
k_cfg->layoutSpecific = specific_buf;
/* should do some kind of sanity check on the configuration.
* Store the sum of all the bytes in the last byte? */
/* configure the system */
raidPtrs[unit]->raidid = unit;
retcode = rf_Configure(raidPtrs[unit], k_cfg);
/* allow this many simultaneous IO's to this RAID device */
raidPtrs[unit]->openings = RAIDOUTSTANDING;
if (retcode == 0) {
retcode = raidinit(dev, raidPtrs[unit], unit);
rf_markalldirty( raidPtrs[unit] );
}
/* free the buffers. No return code here. */
if (k_cfg->layoutSpecificSize) {
RF_Free(specific_buf, k_cfg->layoutSpecificSize);
}
RF_Free(k_cfg, sizeof(RF_Config_t));
db3_printf(("rf_ioctl: retcode=%d RAIDFRAME_CONFIGURE\n",
retcode));
return (retcode);
/* shutdown the system */
case RAIDFRAME_SHUTDOWN:
if ((error = raidlock(rs)) != 0)
return (error);
/*
* If somebody has a partition mounted, we shouldn't
* shutdown.
*/
part = DISKPART(dev);
pmask = (1 << part);
if ((rs->sc_dkdev.dk_openmask & ~pmask) ||
((rs->sc_dkdev.dk_bopenmask & pmask) &&
(rs->sc_dkdev.dk_copenmask & pmask))) {
raidunlock(rs);
return (EBUSY);
}
if (rf_debugKernelAccess) {
printf("call shutdown\n");
}
retcode = rf_Shutdown(raidPtrs[unit]);
db1_printf(("Done main shutdown\n"));
pool_destroy(&rs->sc_cbufpool);
db1_printf(("Done freeing component buffer freelist\n"));
/* It's no longer initialized... */
rs->sc_flags &= ~RAIDF_INITED;
/* Detach the disk. */
disk_detach(&rs->sc_dkdev);
raidunlock(rs);
return (retcode);
case RAIDFRAME_GET_COMPONENT_LABEL:
c_label_ptr = (RF_ComponentLabel_t **) data;
/* need to read the component label for the disk indicated
by row,column in component_label
XXX need to sanity check these values!!!
*/
/* For practice, let's get it directly fromdisk, rather
than from the in-core copy */
RF_Malloc( component_label, sizeof( RF_ComponentLabel_t ),
(RF_ComponentLabel_t *));
if (component_label == NULL)
return (ENOMEM);
bzero((char *) component_label, sizeof(RF_ComponentLabel_t));
retcode = copyin( *c_label_ptr, component_label,
sizeof(RF_ComponentLabel_t));
if (retcode) {
RF_Free( component_label, sizeof(RF_ComponentLabel_t));
return(retcode);
}
row = component_label->row;
column = component_label->column;
if ((row < 0) || (row >= raidPtrs[unit]->numRow) ||
(column < 0) || (column >= raidPtrs[unit]->numCol)) {
RF_Free( component_label, sizeof(RF_ComponentLabel_t));
return(EINVAL);
}
raidread_component_label(
raidPtrs[unit]->Disks[row][column].dev,
raidPtrs[unit]->raid_cinfo[row][column].ci_vp,
component_label );
retcode = copyout((caddr_t) component_label,
(caddr_t) *c_label_ptr,
sizeof(RF_ComponentLabel_t));
RF_Free( component_label, sizeof(RF_ComponentLabel_t));
return (retcode);
case RAIDFRAME_SET_COMPONENT_LABEL:
component_label = (RF_ComponentLabel_t *) data;
/* XXX check the label for valid stuff... */
/* Note that some things *should not* get modified --
the user should be re-initing the labels instead of
trying to patch things.
*/
printf("Got component label:\n");
printf("Version: %d\n",component_label->version);
printf("Serial Number: %d\n",component_label->serial_number);
printf("Mod counter: %d\n",component_label->mod_counter);
printf("Row: %d\n", component_label->row);
printf("Column: %d\n", component_label->column);
printf("Num Rows: %d\n", component_label->num_rows);
printf("Num Columns: %d\n", component_label->num_columns);
printf("Clean: %d\n", component_label->clean);
printf("Status: %d\n", component_label->status);
row = component_label->row;
column = component_label->column;
if ((row < 0) || (row >= raidPtrs[unit]->numRow) ||
(column < 0) || (column >= raidPtrs[unit]->numCol)) {
return(EINVAL);
}
/* XXX this isn't allowed to do anything for now :-) */
#if 0
raidwrite_component_label(
raidPtrs[unit]->Disks[row][column].dev,
raidPtrs[unit]->raid_cinfo[row][column].ci_vp,
component_label );
#endif
return (0);
case RAIDFRAME_INIT_LABELS:
component_label = (RF_ComponentLabel_t *) data;
/*
we only want the serial number from
the above. We get all the rest of the information
from the config that was used to create this RAID
set.
*/
raidPtrs[unit]->serial_number = component_label->serial_number;
/* current version number */
ci_label.version = RF_COMPONENT_LABEL_VERSION;
ci_label.serial_number = component_label->serial_number;
ci_label.mod_counter = raidPtrs[unit]->mod_counter;
ci_label.num_rows = raidPtrs[unit]->numRow;
ci_label.num_columns = raidPtrs[unit]->numCol;
ci_label.clean = RF_RAID_DIRTY; /* not clean */
ci_label.status = rf_ds_optimal; /* "It's good!" */
for(row=0;row<raidPtrs[unit]->numRow;row++) {
ci_label.row = row;
for(column=0;column<raidPtrs[unit]->numCol;column++) {
ci_label.column = column;
raidwrite_component_label(
raidPtrs[unit]->Disks[row][column].dev,
raidPtrs[unit]->raid_cinfo[row][column].ci_vp,
&ci_label );
}
}
return (retcode);
/* initialize all parity */
case RAIDFRAME_REWRITEPARITY:
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0) {
/* Parity for RAID 0 is trivially correct */
raidPtrs[unit]->parity_good = RF_RAID_CLEAN;
return(0);
}
/* borrow the thread of the requesting process */
s = splbio();
retcode = rf_RewriteParity(raidPtrs[unit]);
splx(s);
/* return I/O Error if the parity rewrite fails */
if (retcode) {
retcode = EIO;
} else {
/* set the clean bit! If we shutdown correctly,
the clean bit on each component label will get
set */
raidPtrs[unit]->parity_good = RF_RAID_CLEAN;
}
return (retcode);
case RAIDFRAME_ADD_HOT_SPARE:
sparePtr = (RF_SingleComponent_t *) data;
memcpy( &hot_spare, sparePtr, sizeof(RF_SingleComponent_t));
printf("Adding spare\n");
retcode = rf_add_hot_spare(raidPtrs[unit], &hot_spare);
return(retcode);
case RAIDFRAME_REMOVE_HOT_SPARE:
return(retcode);
case RAIDFRAME_REBUILD_IN_PLACE:
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0) {
/* Can't do this on a RAID 0!! */
return(EINVAL);
}
componentPtr = (RF_SingleComponent_t *) data;
memcpy( &component, componentPtr,
sizeof(RF_SingleComponent_t));
row = component.row;
column = component.column;
printf("Rebuild: %d %d\n",row, column);
if ((row < 0) || (row >= raidPtrs[unit]->numRow) ||
(column < 0) || (column >= raidPtrs[unit]->numCol)) {
return(EINVAL);
}
printf("Attempting a rebuild in place\n");
s = splbio();
retcode = rf_ReconstructInPlace(raidPtrs[unit], row, column);
splx(s);
return(retcode);
case RAIDFRAME_GET_INFO:
{
RF_Raid_t *raid = raidPtrs[unit];
RF_DeviceConfig_t *cfg, **ucfgp;
int i, j, d;
if (!raid->valid)
return (ENODEV);
ucfgp = (RF_DeviceConfig_t **) data;
RF_Malloc(cfg, sizeof(RF_DeviceConfig_t),
(RF_DeviceConfig_t *));
if (cfg == NULL)
return (ENOMEM);
bzero((char *) cfg, sizeof(RF_DeviceConfig_t));
cfg->rows = raid->numRow;
cfg->cols = raid->numCol;
cfg->ndevs = raid->numRow * raid->numCol;
if (cfg->ndevs >= RF_MAX_DISKS) {
RF_Free(cfg, sizeof(RF_DeviceConfig_t));
return (ENOMEM);
}
cfg->nspares = raid->numSpare;
if (cfg->nspares >= RF_MAX_DISKS) {
RF_Free(cfg, sizeof(RF_DeviceConfig_t));
return (ENOMEM);
}
cfg->maxqdepth = raid->maxQueueDepth;
d = 0;
for (i = 0; i < cfg->rows; i++) {
for (j = 0; j < cfg->cols; j++) {
cfg->devs[d] = raid->Disks[i][j];
d++;
}
}
for (j = cfg->cols, i = 0; i < cfg->nspares; i++, j++) {
cfg->spares[i] = raid->Disks[0][j];
}
retcode = copyout((caddr_t) cfg, (caddr_t) * ucfgp,
sizeof(RF_DeviceConfig_t));
RF_Free(cfg, sizeof(RF_DeviceConfig_t));
return (retcode);
}
break;
case RAIDFRAME_CHECK_PARITY:
*(int *) data = raidPtrs[unit]->parity_good;
return (0);
case RAIDFRAME_RESET_ACCTOTALS:
{
RF_Raid_t *raid = raidPtrs[unit];
bzero(&raid->acc_totals, sizeof(raid->acc_totals));
return (0);
}
break;
case RAIDFRAME_GET_ACCTOTALS:
{
RF_AccTotals_t *totals = (RF_AccTotals_t *) data;
RF_Raid_t *raid = raidPtrs[unit];
*totals = raid->acc_totals;
return (0);
}
break;
case RAIDFRAME_KEEP_ACCTOTALS:
{
RF_Raid_t *raid = raidPtrs[unit];
int *keep = (int *) data;
raid->keep_acc_totals = *keep;
return (0);
}
break;
case RAIDFRAME_GET_SIZE:
*(int *) data = raidPtrs[unit]->totalSectors;
return (0);
#define RAIDFRAME_RECON 1
/* XXX The above should probably be set somewhere else!! GO */
#if RAIDFRAME_RECON > 0
/* fail a disk & optionally start reconstruction */
case RAIDFRAME_FAIL_DISK:
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0) {
/* Can't do this on a RAID 0!! */
return(EINVAL);
}
rr = (struct rf_recon_req *) data;
if (rr->row < 0 || rr->row >= raidPtrs[unit]->numRow
|| rr->col < 0 || rr->col >= raidPtrs[unit]->numCol)
return (EINVAL);
printf("raid%d: Failing the disk: row: %d col: %d\n",
unit, rr->row, rr->col);
/* make a copy of the recon request so that we don't rely on
* the user's buffer */
RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *));
bcopy(rr, rrcopy, sizeof(*rr));
rrcopy->raidPtr = (void *) raidPtrs[unit];
LOCK_RECON_Q_MUTEX();
rrcopy->next = recon_queue;
recon_queue = rrcopy;
wakeup(&recon_queue);
UNLOCK_RECON_Q_MUTEX();
return (0);
/* invoke a copyback operation after recon on whatever disk
* needs it, if any */
case RAIDFRAME_COPYBACK:
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0) {
/* This makes no sense on a RAID 0!! */
return(EINVAL);
}
/* borrow the current thread to get this done */
s = splbio();
rf_CopybackReconstructedData(raidPtrs[unit]);
splx(s);
return (0);
/* return the percentage completion of reconstruction */
case RAIDFRAME_CHECKRECON:
if (raidPtrs[unit]->Layout.map->faultsTolerated == 0) {
/* This makes no sense on a RAID 0 */
return(EINVAL);
}
row = *(int *) data;
if (row < 0 || row >= raidPtrs[unit]->numRow)
return (EINVAL);
if (raidPtrs[unit]->status[row] != rf_rs_reconstructing)
*(int *) data = 100;
else
*(int *) data = raidPtrs[unit]->reconControl[row]->percentComplete;
return (0);
/* the sparetable daemon calls this to wait for the kernel to
* need a spare table. this ioctl does not return until a
* spare table is needed. XXX -- calling mpsleep here in the
* ioctl code is almost certainly wrong and evil. -- XXX XXX
* -- I should either compute the spare table in the kernel,
* or have a different -- XXX XXX -- interface (a different
* character device) for delivering the table -- XXX */
#if 0
case RAIDFRAME_SPARET_WAIT:
RF_LOCK_MUTEX(rf_sparet_wait_mutex);
while (!rf_sparet_wait_queue)
mpsleep(&rf_sparet_wait_queue, (PZERO + 1) | PCATCH, "sparet wait", 0, (void *) simple_lock_addr(rf_sparet_wait_mutex), MS_LOCK_SIMPLE);
waitreq = rf_sparet_wait_queue;
rf_sparet_wait_queue = rf_sparet_wait_queue->next;
RF_UNLOCK_MUTEX(rf_sparet_wait_mutex);
*((RF_SparetWait_t *) data) = *waitreq; /* structure assignment */
RF_Free(waitreq, sizeof(*waitreq));
return (0);
/* wakes up a process waiting on SPARET_WAIT and puts an error
* code in it that will cause the dameon to exit */
case RAIDFRAME_ABORT_SPARET_WAIT:
RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *));
waitreq->fcol = -1;
RF_LOCK_MUTEX(rf_sparet_wait_mutex);
waitreq->next = rf_sparet_wait_queue;
rf_sparet_wait_queue = waitreq;
RF_UNLOCK_MUTEX(rf_sparet_wait_mutex);
wakeup(&rf_sparet_wait_queue);
return (0);
/* used by the spare table daemon to deliver a spare table
* into the kernel */
case RAIDFRAME_SEND_SPARET:
/* install the spare table */
retcode = rf_SetSpareTable(raidPtrs[unit], *(void **) data);
/* respond to the requestor. the return status of the spare
* table installation is passed in the "fcol" field */
RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *));
waitreq->fcol = retcode;
RF_LOCK_MUTEX(rf_sparet_wait_mutex);
waitreq->next = rf_sparet_resp_queue;
rf_sparet_resp_queue = waitreq;
wakeup(&rf_sparet_resp_queue);
RF_UNLOCK_MUTEX(rf_sparet_wait_mutex);
return (retcode);
#endif
#endif /* RAIDFRAME_RECON > 0 */
default:
break; /* fall through to the os-specific code below */
}
if (!raidPtrs[unit]->valid)
return (EINVAL);
/*
* Add support for "regular" device ioctls here.
*/
switch (cmd) {
case DIOCGDINFO:
db1_printf(("DIOCGDINFO %d %d\n", (int) dev, (int) DISKPART(dev)));
*(struct disklabel *) data = *(rs->sc_dkdev.dk_label);
break;
case DIOCGPART:
db1_printf(("DIOCGPART: %d %d\n", (int) dev, (int) DISKPART(dev)));
((struct partinfo *) data)->disklab = rs->sc_dkdev.dk_label;
((struct partinfo *) data)->part =
&rs->sc_dkdev.dk_label->d_partitions[DISKPART(dev)];
break;
case DIOCWDINFO:
db1_printf(("DIOCWDINFO\n"));
case DIOCSDINFO:
db1_printf(("DIOCSDINFO\n"));
if ((error = raidlock(rs)) != 0)
return (error);
rs->sc_flags |= RAIDF_LABELLING;
error = setdisklabel(rs->sc_dkdev.dk_label,
(struct disklabel *) data, 0, rs->sc_dkdev.dk_cpulabel);
if (error == 0) {
if (cmd == DIOCWDINFO)
error = writedisklabel(RAIDLABELDEV(dev),
raidstrategy, rs->sc_dkdev.dk_label,
rs->sc_dkdev.dk_cpulabel);
}
rs->sc_flags &= ~RAIDF_LABELLING;
raidunlock(rs);
if (error)
return (error);
break;
case DIOCWLABEL:
db1_printf(("DIOCWLABEL\n"));
if (*(int *) data != 0)
rs->sc_flags |= RAIDF_WLABEL;
else
rs->sc_flags &= ~RAIDF_WLABEL;
break;
case DIOCGDEFLABEL:
db1_printf(("DIOCGDEFLABEL\n"));
raidgetdefaultlabel(raidPtrs[unit], rs,
(struct disklabel *) data);
break;
default:
retcode = ENOTTY; /* XXXX ?? OR EINVAL ? */
}
return (retcode);
}
/* raidinit -- complete the rest of the initialization for the
RAIDframe device. */
static int
raidinit(dev, raidPtr, unit)
dev_t dev;
RF_Raid_t *raidPtr;
int unit;
{
int retcode;
/* int ix; */
/* struct raidbuf *raidbp; */
struct raid_softc *rs;
retcode = 0;
rs = &raid_softc[unit];
pool_init(&rs->sc_cbufpool, sizeof(struct raidbuf), 0,
0, 0, "raidpl", 0, NULL, NULL, M_RAIDFRAME);
/* XXX should check return code first... */
rs->sc_flags |= RAIDF_INITED;
sprintf(rs->sc_xname, "raid%d", unit); /* XXX doesn't check bounds. */
rs->sc_dkdev.dk_name = rs->sc_xname;
/* disk_attach actually creates space for the CPU disklabel, among
* other things, so it's critical to call this *BEFORE* we try putzing
* with disklabels. */
disk_attach(&rs->sc_dkdev);
/* XXX There may be a weird interaction here between this, and
* protectedSectors, as used in RAIDframe. */
rs->sc_size = raidPtr->totalSectors;
rs->sc_dev = dev;
return (retcode);
}
/*
* This kernel thread never exits. It is created once, and persists
* until the system reboots.
*/
void
rf_ReconKernelThread()
{
struct rf_recon_req *req;
int s;
/* XXX not sure what spl() level we should be at here... probably
* splbio() */
s = splbio();
while (1) {
/* grab the next reconstruction request from the queue */
LOCK_RECON_Q_MUTEX();
while (!recon_queue) {
UNLOCK_RECON_Q_MUTEX();
tsleep(&recon_queue, PRIBIO,
"raidframe recon", 0);
LOCK_RECON_Q_MUTEX();
}
req = recon_queue;
recon_queue = recon_queue->next;
UNLOCK_RECON_Q_MUTEX();
/*
* If flags specifies that we should start recon, this call
* will not return until reconstruction completes, fails,
* or is aborted.
*/
rf_FailDisk((RF_Raid_t *) req->raidPtr, req->row, req->col,
((req->flags & RF_FDFLAGS_RECON) ? 1 : 0));
RF_Free(req, sizeof(*req));
}
}
/* wake up the daemon & tell it to get us a spare table
* XXX
* the entries in the queues should be tagged with the raidPtr
* so that in the extremely rare case that two recons happen at once,
* we know for which device were requesting a spare table
* XXX
*/
int
rf_GetSpareTableFromDaemon(req)
RF_SparetWait_t *req;
{
int retcode;
RF_LOCK_MUTEX(rf_sparet_wait_mutex);
req->next = rf_sparet_wait_queue;
rf_sparet_wait_queue = req;
wakeup(&rf_sparet_wait_queue);
/* mpsleep unlocks the mutex */
while (!rf_sparet_resp_queue) {
tsleep(&rf_sparet_resp_queue, PRIBIO,
"raidframe getsparetable", 0);
}
req = rf_sparet_resp_queue;
rf_sparet_resp_queue = req->next;
RF_UNLOCK_MUTEX(rf_sparet_wait_mutex);
retcode = req->fcol;
RF_Free(req, sizeof(*req)); /* this is not the same req as we
* alloc'd */
return (retcode);
}
/* a wrapper around rf_DoAccess that extracts appropriate info from the
* bp & passes it down.
* any calls originating in the kernel must use non-blocking I/O
* do some extra sanity checking to return "appropriate" error values for
* certain conditions (to make some standard utilities work)
*/
int
rf_DoAccessKernel(raidPtr, bp, flags, cbFunc, cbArg)
RF_Raid_t *raidPtr;
struct buf *bp;
RF_RaidAccessFlags_t flags;
void (*cbFunc) (struct buf *);
void *cbArg;
{
RF_SectorCount_t num_blocks, pb, sum;
RF_RaidAddr_t raid_addr;
int retcode;
struct partition *pp;
daddr_t blocknum;
int unit;
struct raid_softc *rs;
int do_async;
/* XXX The dev_t used here should be for /dev/[r]raid* !!! */
unit = raidPtr->raidid;
rs = &raid_softc[unit];
/* Ok, for the bp we have here, bp->b_blkno is relative to the
* partition.. Need to make it absolute to the underlying device.. */
blocknum = bp->b_blkno;
if (DISKPART(bp->b_dev) != RAW_PART) {
pp = &rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)];
blocknum += pp->p_offset;
db1_printf(("updated: %d %d\n", DISKPART(bp->b_dev),
pp->p_offset));
} else {
db1_printf(("Is raw..\n"));
}
db1_printf(("Blocks: %d, %d\n", (int) bp->b_blkno, (int) blocknum));
db1_printf(("bp->b_bcount = %d\n", (int) bp->b_bcount));
db1_printf(("bp->b_resid = %d\n", (int) bp->b_resid));
/* *THIS* is where we adjust what block we're going to... but DO NOT
* TOUCH bp->b_blkno!!! */
raid_addr = blocknum;
num_blocks = bp->b_bcount >> raidPtr->logBytesPerSector;
pb = (bp->b_bcount & raidPtr->sectorMask) ? 1 : 0;
sum = raid_addr + num_blocks + pb;
if (1 || rf_debugKernelAccess) {
db1_printf(("raid_addr=%d sum=%d num_blocks=%d(+%d) (%d)\n",
(int) raid_addr, (int) sum, (int) num_blocks,
(int) pb, (int) bp->b_resid));
}
if ((sum > raidPtr->totalSectors) || (sum < raid_addr)
|| (sum < num_blocks) || (sum < pb)) {
bp->b_error = ENOSPC;
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
return (bp->b_error);
}
/*
* XXX rf_DoAccess() should do this, not just DoAccessKernel()
*/
if (bp->b_bcount & raidPtr->sectorMask) {
bp->b_error = EINVAL;
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
biodone(bp);
return (bp->b_error);
}
db1_printf(("Calling DoAccess..\n"));
/* Put a throttle on the number of requests we handle simultanously */
RF_LOCK_MUTEX(raidPtr->mutex);
while(raidPtr->openings <= 0) {
RF_UNLOCK_MUTEX(raidPtr->mutex);
(void)tsleep(&raidPtr->openings, PRIBIO, "rfdwait", 0);
RF_LOCK_MUTEX(raidPtr->mutex);
}
raidPtr->openings--;
RF_UNLOCK_MUTEX(raidPtr->mutex);
/*
* Everything is async.
*/
do_async = 1;
/* don't ever condition on bp->b_flags & B_WRITE. always condition on
* B_READ instead */
retcode = rf_DoAccess(raidPtr, (bp->b_flags & B_READ) ?
RF_IO_TYPE_READ : RF_IO_TYPE_WRITE,
do_async, raid_addr, num_blocks,
bp->b_un.b_addr,
bp, NULL, NULL, RF_DAG_NONBLOCKING_IO | flags,
NULL, cbFunc, cbArg);
#if 0
db1_printf(("After call to DoAccess: 0x%x 0x%x %d\n", bp,
bp->b_data, (int) bp->b_resid));
#endif
return (retcode);
}
/* invoke an I/O from kernel mode. Disk queue should be locked upon entry */
int
rf_DispatchKernelIO(queue, req)
RF_DiskQueue_t *queue;
RF_DiskQueueData_t *req;
{
int op = (req->type == RF_IO_TYPE_READ) ? B_READ : B_WRITE;
struct buf *bp;
struct raidbuf *raidbp = NULL;
struct raid_softc *rs;
int unit;
/* XXX along with the vnode, we also need the softc associated with
* this device.. */
req->queue = queue;
unit = queue->raidPtr->raidid;
db1_printf(("DispatchKernelIO unit: %d\n", unit));
if (unit >= numraid) {
printf("Invalid unit number: %d %d\n", unit, numraid);
panic("Invalid Unit number in rf_DispatchKernelIO\n");
}
rs = &raid_softc[unit];
/* XXX is this the right place? */
disk_busy(&rs->sc_dkdev);
bp = req->bp;
#if 1
/* XXX when there is a physical disk failure, someone is passing us a
* buffer that contains old stuff!! Attempt to deal with this problem
* without taking a performance hit... (not sure where the real bug
* is. It's buried in RAIDframe somewhere) :-( GO ) */
if (bp->b_flags & B_ERROR) {
bp->b_flags &= ~B_ERROR;
}
if (bp->b_error != 0) {
bp->b_error = 0;
}
#endif
raidbp = RAIDGETBUF(rs);
raidbp->rf_flags = 0; /* XXX not really used anywhere... */
/*
* context for raidiodone
*/
raidbp->rf_obp = bp;
raidbp->req = req;
LIST_INIT(&raidbp->rf_buf.b_dep);
switch (req->type) {
case RF_IO_TYPE_NOP: /* used primarily to unlock a locked queue */
/* Dprintf2("rf_DispatchKernelIO: NOP to r %d c %d\n",
* queue->row, queue->col); */
/* XXX need to do something extra here.. */
/* I'm leaving this in, as I've never actually seen it used,
* and I'd like folks to report it... GO */
printf(("WAKEUP CALLED\n"));
queue->numOutstanding++;
/* XXX need to glue the original buffer into this?? */
KernelWakeupFunc(&raidbp->rf_buf);
break;
case RF_IO_TYPE_READ:
case RF_IO_TYPE_WRITE:
if (req->tracerec) {
RF_ETIMER_START(req->tracerec->timer);
}
InitBP(&raidbp->rf_buf, queue->rf_cinfo->ci_vp,
op | bp->b_flags, queue->rf_cinfo->ci_dev,
req->sectorOffset, req->numSector,
req->buf, KernelWakeupFunc, (void *) req,
queue->raidPtr->logBytesPerSector, req->b_proc);
if (rf_debugKernelAccess) {
db1_printf(("dispatch: bp->b_blkno = %ld\n",
(long) bp->b_blkno));
}
queue->numOutstanding++;
queue->last_deq_sector = req->sectorOffset;
/* acc wouldn't have been let in if there were any pending
* reqs at any other priority */
queue->curPriority = req->priority;
/* Dprintf3("rf_DispatchKernelIO: %c to row %d col %d\n",
* req->type, queue->row, queue->col); */
db1_printf(("Going for %c to unit %d row %d col %d\n",
req->type, unit, queue->row, queue->col));
db1_printf(("sector %d count %d (%d bytes) %d\n",
(int) req->sectorOffset, (int) req->numSector,
(int) (req->numSector <<
queue->raidPtr->logBytesPerSector),
(int) queue->raidPtr->logBytesPerSector));
if ((raidbp->rf_buf.b_flags & B_READ) == 0) {
raidbp->rf_buf.b_vp->v_numoutput++;
}
VOP_STRATEGY(&raidbp->rf_buf);
break;
default:
panic("bad req->type in rf_DispatchKernelIO");
}
db1_printf(("Exiting from DispatchKernelIO\n"));
return (0);
}
/* this is the callback function associated with a I/O invoked from
kernel code.
*/
static void
KernelWakeupFunc(vbp)
struct buf *vbp;
{
RF_DiskQueueData_t *req = NULL;
RF_DiskQueue_t *queue;
struct raidbuf *raidbp = (struct raidbuf *) vbp;
struct buf *bp;
struct raid_softc *rs;
int unit;
register int s;
s = splbio(); /* XXX */
db1_printf(("recovering the request queue:\n"));
req = raidbp->req;
bp = raidbp->rf_obp;
#if 0
db1_printf(("bp=0x%x\n", bp));
#endif
queue = (RF_DiskQueue_t *) req->queue;
if (raidbp->rf_buf.b_flags & B_ERROR) {
#if 0
printf("Setting bp->b_flags!!! %d\n", raidbp->rf_buf.b_error);
#endif
bp->b_flags |= B_ERROR;
bp->b_error = raidbp->rf_buf.b_error ?
raidbp->rf_buf.b_error : EIO;
}
#if 0
db1_printf(("raidbp->rf_buf.b_bcount=%d\n", (int) raidbp->rf_buf.b_bcount));
db1_printf(("raidbp->rf_buf.b_bufsize=%d\n", (int) raidbp->rf_buf.b_bufsize));
db1_printf(("raidbp->rf_buf.b_resid=%d\n", (int) raidbp->rf_buf.b_resid));
db1_printf(("raidbp->rf_buf.b_data=0x%x\n", raidbp->rf_buf.b_data));
#endif
/* XXX methinks this could be wrong... */
#if 1
bp->b_resid = raidbp->rf_buf.b_resid;
#endif
if (req->tracerec) {
RF_ETIMER_STOP(req->tracerec->timer);
RF_ETIMER_EVAL(req->tracerec->timer);
RF_LOCK_MUTEX(rf_tracing_mutex);
req->tracerec->diskwait_us += RF_ETIMER_VAL_US(req->tracerec->timer);
req->tracerec->phys_io_us += RF_ETIMER_VAL_US(req->tracerec->timer);
req->tracerec->num_phys_ios++;
RF_UNLOCK_MUTEX(rf_tracing_mutex);
}
bp->b_bcount = raidbp->rf_buf.b_bcount; /* XXXX ?? */
unit = queue->raidPtr->raidid; /* *Much* simpler :-> */
/* XXX Ok, let's get aggressive... If B_ERROR is set, let's go
* ballistic, and mark the component as hosed... */
#if 1
if (bp->b_flags & B_ERROR) {
/* Mark the disk as dead */
/* but only mark it once... */
if (queue->raidPtr->Disks[queue->row][queue->col].status ==
rf_ds_optimal) {
printf("raid%d: IO Error. Marking %s as failed.\n",
unit, queue->raidPtr->Disks[queue->row][queue->col].devname);
queue->raidPtr->Disks[queue->row][queue->col].status =
rf_ds_failed;
queue->raidPtr->status[queue->row] = rf_rs_degraded;
queue->raidPtr->numFailures++;
/* XXX here we should bump the version number for each component, and write that data out */
} else { /* Disk is already dead... */
/* printf("Disk already marked as dead!\n"); */
}
}
#endif
rs = &raid_softc[unit];
RAIDPUTBUF(rs, raidbp);
if (bp->b_resid == 0) {
db1_printf(("Disk is no longer busy for this buffer... %d %ld %ld\n",
unit, bp->b_resid, bp->b_bcount));
/* XXX is this the right place for a disk_unbusy()??!??!?!? */
disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid));
} else {
db1_printf(("b_resid is still %ld\n", bp->b_resid));
}
rf_DiskIOComplete(queue, req, (bp->b_flags & B_ERROR) ? 1 : 0);
(req->CompleteFunc) (req->argument, (bp->b_flags & B_ERROR) ? 1 : 0);
/* printf("Exiting KernelWakeupFunc\n"); */
splx(s); /* XXX */
}
/*
* initialize a buf structure for doing an I/O in the kernel.
*/
static void
InitBP(
struct buf * bp,
struct vnode * b_vp,
unsigned rw_flag,
dev_t dev,
RF_SectorNum_t startSect,
RF_SectorCount_t numSect,
caddr_t buf,
void (*cbFunc) (struct buf *),
void *cbArg,
int logBytesPerSector,
struct proc * b_proc)
{
/* bp->b_flags = B_PHYS | rw_flag; */
bp->b_flags = B_CALL | rw_flag; /* XXX need B_PHYS here too??? */
bp->b_bcount = numSect << logBytesPerSector;
bp->b_bufsize = bp->b_bcount;
bp->b_error = 0;
bp->b_dev = dev;
db1_printf(("bp->b_dev is %d\n", dev));
bp->b_un.b_addr = buf;
#if 0
db1_printf(("bp->b_data=0x%x\n", bp->b_data));
#endif
bp->b_blkno = startSect;
bp->b_resid = bp->b_bcount; /* XXX is this right!??!?!! */
db1_printf(("b_bcount is: %d\n", (int) bp->b_bcount));
if (bp->b_bcount == 0) {
panic("bp->b_bcount is zero in InitBP!!\n");
}
bp->b_proc = b_proc;
bp->b_iodone = cbFunc;
bp->b_vp = b_vp;
}
static void
raidgetdefaultlabel(raidPtr, rs, lp)
RF_Raid_t *raidPtr;
struct raid_softc *rs;
struct disklabel *lp;
{
db1_printf(("Building a default label...\n"));
bzero(lp, sizeof(*lp));
/* fabricate a label... */
lp->d_secperunit = raidPtr->totalSectors;
lp->d_secsize = raidPtr->bytesPerSector;
lp->d_nsectors = 1024 * (1024 / raidPtr->bytesPerSector);
lp->d_ntracks = 1;
lp->d_ncylinders = raidPtr->totalSectors / lp->d_nsectors;
lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors;
strncpy(lp->d_typename, "raid", sizeof(lp->d_typename));
lp->d_type = DTYPE_RAID;
strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname));
lp->d_rpm = 3600;
lp->d_interleave = 1;
lp->d_flags = 0;
lp->d_partitions[RAW_PART].p_offset = 0;
lp->d_partitions[RAW_PART].p_size = raidPtr->totalSectors;
lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
lp->d_npartitions = RAW_PART + 1;
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_checksum = dkcksum(rs->sc_dkdev.dk_label);
}
/*
* Read the disklabel from the raid device. If one is not present, fake one
* up.
*/
static void
raidgetdisklabel(dev)
dev_t dev;
{
int unit = raidunit(dev);
struct raid_softc *rs = &raid_softc[unit];
char *errstring;
struct disklabel *lp = rs->sc_dkdev.dk_label;
struct cpu_disklabel *clp = rs->sc_dkdev.dk_cpulabel;
RF_Raid_t *raidPtr;
db1_printf(("Getting the disklabel...\n"));
bzero(clp, sizeof(*clp));
raidPtr = raidPtrs[unit];
raidgetdefaultlabel(raidPtr, rs, lp);
/*
* Call the generic disklabel extraction routine.
*/
errstring = readdisklabel(RAIDLABELDEV(dev), raidstrategy,
rs->sc_dkdev.dk_label, rs->sc_dkdev.dk_cpulabel);
if (errstring)
raidmakedisklabel(rs);
else {
int i;
struct partition *pp;
/*
* Sanity check whether the found disklabel is valid.
*
* This is necessary since total size of the raid device
* may vary when an interleave is changed even though exactly
* same componets are used, and old disklabel may used
* if that is found.
*/
if (lp->d_secperunit != rs->sc_size)
printf("WARNING: %s: "
"total sector size in disklabel (%d) != "
"the size of raid (%ld)\n", rs->sc_xname,
lp->d_secperunit, (long) rs->sc_size);
for (i = 0; i < lp->d_npartitions; i++) {
pp = &lp->d_partitions[i];
if (pp->p_offset + pp->p_size > rs->sc_size)
printf("WARNING: %s: end of partition `%c' "
"exceeds the size of raid (%ld)\n",
rs->sc_xname, 'a' + i, (long) rs->sc_size);
}
}
}
/*
* Take care of things one might want to take care of in the event
* that a disklabel isn't present.
*/
static void
raidmakedisklabel(rs)
struct raid_softc *rs;
{
struct disklabel *lp = rs->sc_dkdev.dk_label;
db1_printf(("Making a label..\n"));
/*
* For historical reasons, if there's no disklabel present
* the raw partition must be marked FS_BSDFFS.
*/
lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS;
strncpy(lp->d_packname, "default label", sizeof(lp->d_packname));
lp->d_checksum = dkcksum(lp);
}
/*
* Lookup the provided name in the filesystem. If the file exists,
* is a valid block device, and isn't being used by anyone else,
* set *vpp to the file's vnode.
* You'll find the original of this in ccd.c
*/
int
raidlookup(path, p, vpp)
char *path;
struct proc *p;
struct vnode **vpp; /* result */
{
struct nameidata nd;
struct vnode *vp;
struct vattr va;
int error;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, path, p);
if ((error = vn_open(&nd, FREAD | FWRITE, 0)) != 0) {
#ifdef DEBUG
printf("RAIDframe: vn_open returned %d\n", error);
#endif
return (error);
}
vp = nd.ni_vp;
if (vp->v_usecount > 1) {
VOP_UNLOCK(vp, 0);
(void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p);
return (EBUSY);
}
if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) != 0) {
VOP_UNLOCK(vp, 0);
(void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p);
return (error);
}
/* XXX: eventually we should handle VREG, too. */
if (va.va_type != VBLK) {
VOP_UNLOCK(vp, 0);
(void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p);
return (ENOTBLK);
}
VOP_UNLOCK(vp, 0);
*vpp = vp;
return (0);
}
/*
* Wait interruptibly for an exclusive lock.
*
* XXX
* Several drivers do this; it should be abstracted and made MP-safe.
* (Hmm... where have we seen this warning before :-> GO )
*/
static int
raidlock(rs)
struct raid_softc *rs;
{
int error;
while ((rs->sc_flags & RAIDF_LOCKED) != 0) {
rs->sc_flags |= RAIDF_WANTED;
if ((error =
tsleep(rs, PRIBIO | PCATCH, "raidlck", 0)) != 0)
return (error);
}
rs->sc_flags |= RAIDF_LOCKED;
return (0);
}
/*
* Unlock and wake up any waiters.
*/
static void
raidunlock(rs)
struct raid_softc *rs;
{
rs->sc_flags &= ~RAIDF_LOCKED;
if ((rs->sc_flags & RAIDF_WANTED) != 0) {
rs->sc_flags &= ~RAIDF_WANTED;
wakeup(rs);
}
}
#define RF_COMPONENT_INFO_OFFSET 16384 /* bytes */
#define RF_COMPONENT_INFO_SIZE 1024 /* bytes */
int
raidmarkclean(dev_t dev, struct vnode *b_vp, int mod_counter)
{
RF_ComponentLabel_t component_label;
raidread_component_label(dev, b_vp, &component_label);
component_label.mod_counter = mod_counter;
component_label.clean = RF_RAID_CLEAN;
raidwrite_component_label(dev, b_vp, &component_label);
return(0);
}
int
raidmarkdirty(dev_t dev, struct vnode *b_vp, int mod_counter)
{
RF_ComponentLabel_t component_label;
raidread_component_label(dev, b_vp, &component_label);
component_label.mod_counter = mod_counter;
component_label.clean = RF_RAID_DIRTY;
raidwrite_component_label(dev, b_vp, &component_label);
return(0);
}
/* ARGSUSED */
int
raidread_component_label(dev, b_vp, component_label)
dev_t dev;
struct vnode *b_vp;
RF_ComponentLabel_t *component_label;
{
struct buf *bp;
int error;
/* XXX should probably ensure that we don't try to do this if
someone has changed rf_protected_sectors. */
/* get a block of the appropriate size... */
bp = geteblk((int)RF_COMPONENT_INFO_SIZE);
bp->b_dev = dev;
/* get our ducks in a row for the read */
bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE;
bp->b_bcount = RF_COMPONENT_INFO_SIZE;
bp->b_flags = B_BUSY | B_READ;
bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE;
(*bdevsw[major(bp->b_dev)].d_strategy)(bp);
error = biowait(bp);
if (!error) {
memcpy(component_label, bp->b_un.b_addr,
sizeof(RF_ComponentLabel_t));
#if 0
printf("raidread_component_label: got component label:\n");
printf("Version: %d\n",component_label->version);
printf("Serial Number: %d\n",component_label->serial_number);
printf("Mod counter: %d\n",component_label->mod_counter);
printf("Row: %d\n", component_label->row);
printf("Column: %d\n", component_label->column);
printf("Num Rows: %d\n", component_label->num_rows);
printf("Num Columns: %d\n", component_label->num_columns);
printf("Clean: %d\n", component_label->clean);
printf("Status: %d\n", component_label->status);
#endif
} else {
printf("Failed to read RAID component label!\n");
}
bp->b_flags = B_INVAL | B_AGE;
brelse(bp);
return(error);
}
/* ARGSUSED */
int
raidwrite_component_label(dev, b_vp, component_label)
dev_t dev;
struct vnode *b_vp;
RF_ComponentLabel_t *component_label;
{
struct buf *bp;
int error;
/* get a block of the appropriate size... */
bp = geteblk((int)RF_COMPONENT_INFO_SIZE);
bp->b_dev = dev;
/* get our ducks in a row for the write */
bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE;
bp->b_bcount = RF_COMPONENT_INFO_SIZE;
bp->b_flags = B_BUSY | B_WRITE;
bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE;
memset( bp->b_un.b_addr, 0, RF_COMPONENT_INFO_SIZE );
memcpy( bp->b_un.b_addr, component_label, sizeof(RF_ComponentLabel_t));
(*bdevsw[major(bp->b_dev)].d_strategy)(bp);
error = biowait(bp);
bp->b_flags = B_INVAL | B_AGE;
brelse(bp);
if (error) {
printf("Failed to write RAID component info!\n");
}
return(error);
}
void
rf_markalldirty( raidPtr )
RF_Raid_t *raidPtr;
{
RF_ComponentLabel_t c_label;
int r,c;
raidPtr->mod_counter++;
for (r = 0; r < raidPtr->numRow; r++) {
for (c = 0; c < raidPtr->numCol; c++) {
if (raidPtr->Disks[r][c].status != rf_ds_failed) {
raidread_component_label(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&c_label);
if (c_label.status == rf_ds_spared) {
/* XXX do something special...
but whatever you do, don't
try to access it!! */
} else {
#if 0
c_label.status =
raidPtr->Disks[r][c].status;
raidwrite_component_label(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&c_label);
#endif
raidmarkdirty(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
raidPtr->mod_counter);
}
}
}
}
/* printf("Component labels marked dirty.\n"); */
#if 0
for( c = 0; c < raidPtr->numSpare ; c++) {
sparecol = raidPtr->numCol + c;
if (raidPtr->Disks[r][sparecol].status == rf_ds_used_spare) {
/*
XXX this is where we get fancy and map this spare
into it's correct spot in the array.
*/
/*
we claim this disk is "optimal" if it's
rf_ds_used_spare, as that means it should be
directly substitutable for the disk it replaced.
We note that too...
*/
for(i=0;i<raidPtr->numRow;i++) {
for(j=0;j<raidPtr->numCol;j++) {
if ((raidPtr->Disks[i][j].spareRow ==
r) &&
(raidPtr->Disks[i][j].spareCol ==
sparecol)) {
srow = r;
scol = sparecol;
break;
}
}
}
raidread_component_label(
raidPtr->Disks[r][sparecol].dev,
raidPtr->raid_cinfo[r][sparecol].ci_vp,
&c_label);
/* make sure status is noted */
c_label.version = RF_COMPONENT_LABEL_VERSION;
c_label.mod_counter = raidPtr->mod_counter;
c_label.serial_number = raidPtr->serial_number;
c_label.row = srow;
c_label.column = scol;
c_label.num_rows = raidPtr->numRow;
c_label.num_columns = raidPtr->numCol;
c_label.clean = RF_RAID_DIRTY; /* changed in a bit*/
c_label.status = rf_ds_optimal;
raidwrite_component_label(
raidPtr->Disks[r][sparecol].dev,
raidPtr->raid_cinfo[r][sparecol].ci_vp,
&c_label);
raidmarkclean( raidPtr->Disks[r][sparecol].dev,
raidPtr->raid_cinfo[r][sparecol].ci_vp);
}
}
#endif
}
void
rf_update_component_labels( raidPtr )
RF_Raid_t *raidPtr;
{
RF_ComponentLabel_t c_label;
int sparecol;
int r,c;
int i,j;
int srow, scol;
srow = -1;
scol = -1;
/* XXX should do extra checks to make sure things really are clean,
rather than blindly setting the clean bit... */
raidPtr->mod_counter++;
for (r = 0; r < raidPtr->numRow; r++) {
for (c = 0; c < raidPtr->numCol; c++) {
if (raidPtr->Disks[r][c].status == rf_ds_optimal) {
raidread_component_label(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&c_label);
/* make sure status is noted */
c_label.status = rf_ds_optimal;
raidwrite_component_label(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&c_label);
if (raidPtr->parity_good == RF_RAID_CLEAN) {
raidmarkclean(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
raidPtr->mod_counter);
}
}
/* else we don't touch it.. */
#if 0
else if (raidPtr->Disks[r][c].status !=
rf_ds_failed) {
raidread_component_label(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&c_label);
/* make sure status is noted */
c_label.status =
raidPtr->Disks[r][c].status;
raidwrite_component_label(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&c_label);
if (raidPtr->parity_good == RF_RAID_CLEAN) {
raidmarkclean(
raidPtr->Disks[r][c].dev,
raidPtr->raid_cinfo[r][c].ci_vp,
raidPtr->mod_counter);
}
}
#endif
}
}
for( c = 0; c < raidPtr->numSpare ; c++) {
sparecol = raidPtr->numCol + c;
if (raidPtr->Disks[0][sparecol].status == rf_ds_used_spare) {
/*
we claim this disk is "optimal" if it's
rf_ds_used_spare, as that means it should be
directly substitutable for the disk it replaced.
We note that too...
*/
for(i=0;i<raidPtr->numRow;i++) {
for(j=0;j<raidPtr->numCol;j++) {
if ((raidPtr->Disks[i][j].spareRow ==
0) &&
(raidPtr->Disks[i][j].spareCol ==
sparecol)) {
srow = i;
scol = j;
break;
}
}
}
raidread_component_label(
raidPtr->Disks[0][sparecol].dev,
raidPtr->raid_cinfo[0][sparecol].ci_vp,
&c_label);
/* make sure status is noted */
c_label.version = RF_COMPONENT_LABEL_VERSION;
c_label.mod_counter = raidPtr->mod_counter;
c_label.serial_number = raidPtr->serial_number;
c_label.row = srow;
c_label.column = scol;
c_label.num_rows = raidPtr->numRow;
c_label.num_columns = raidPtr->numCol;
c_label.clean = RF_RAID_DIRTY; /* changed in a bit*/
c_label.status = rf_ds_optimal;
raidwrite_component_label(
raidPtr->Disks[0][sparecol].dev,
raidPtr->raid_cinfo[0][sparecol].ci_vp,
&c_label);
if (raidPtr->parity_good == RF_RAID_CLEAN) {
raidmarkclean( raidPtr->Disks[0][sparecol].dev,
raidPtr->raid_cinfo[0][sparecol].ci_vp,
raidPtr->mod_counter);
}
}
}
/* printf("Component labels updated\n"); */
}
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