/* Do a complete copyback. */
void
rf_CopybackReconstructedData(RF_Raid_t *raidPtr)
{
RF_ComponentLabel_t c_label;
int done, retcode;
RF_CopybackDesc_t *desc;
RF_RowCol_t frow, fcol;
RF_RaidDisk_t *badDisk;
char *databuf;
struct partinfo dpart;
struct vnode *vp;
struct vattr va;
struct proc *proc;
int ac;
done = 0;
fcol = 0;
for (frow = 0; frow < raidPtr->numRow; frow++) {
for (fcol = 0; fcol < raidPtr->numCol; fcol++) {
if (raidPtr->Disks[frow][fcol].status ==
rf_ds_dist_spared ||
raidPtr->Disks[frow][fcol].status ==
rf_ds_spared) {
done = 1;
break;
}
}
if (done)
break;
}
if (frow == raidPtr->numRow) {
printf("COPYBACK: No disks need copyback.\n");
return;
}
badDisk = &raidPtr->Disks[frow][fcol];
proc = raidPtr->engine_thread;
/*
* This device may have been opened successfully the first time.
* Close it before trying to open it again.
*/
if (raidPtr->raid_cinfo[frow][fcol].ci_vp != NULL) {
printf("Close the opened device: %s.\n",
raidPtr->Disks[frow][fcol].devname);
vp = raidPtr->raid_cinfo[frow][fcol].ci_vp;
ac = raidPtr->Disks[frow][fcol].auto_configured;
rf_close_component(raidPtr, vp, ac);
raidPtr->raid_cinfo[frow][fcol].ci_vp = NULL;
}
/* Note that this disk was *not* auto_configured (any longer). */
raidPtr->Disks[frow][fcol].auto_configured = 0;
printf("About to (re-)open the device: %s.\n",
raidPtr->Disks[frow][fcol].devname);
retcode = raidlookup(raidPtr->Disks[frow][fcol].devname, proc, &vp);
if (retcode) {
printf("COPYBACK: raidlookup on device: %s failed: %d !\n",
raidPtr->Disks[frow][fcol].devname, retcode);
/*
* XXX The component isn't responding properly... Must be
* still dead :-(
*/
return;
} else {
/*
* Ok, so we can at least do a lookup...
* How about actually getting a vp for it ?
*/
if ((retcode = VOP_GETATTR(vp, &va, proc->p_ucred, proc)) != 0)
{
return;
}
retcode = VOP_IOCTL(vp, DIOCGPART, (caddr_t) &dpart, FREAD,
proc->p_ucred, proc);
if (retcode) {
return;
}
raidPtr->Disks[frow][fcol].blockSize = dpart.disklab->d_secsize;
raidPtr->Disks[frow][fcol].numBlocks = dpart.part->p_size -
rf_protectedSectors;
raidPtr->raid_cinfo[frow][fcol].ci_vp = vp;
raidPtr->raid_cinfo[frow][fcol].ci_dev = va.va_rdev;
/* XXX Or the above ? */
raidPtr->Disks[frow][fcol].dev = va.va_rdev;
/*
* We allow the user to specify that only a fraction of the
* disks should be used this is just for debug: it speeds up
* the parity scan.
*/
raidPtr->Disks[frow][fcol].numBlocks =
raidPtr->Disks[frow][fcol].numBlocks *
rf_sizePercentage / 100;
}
#if 0
/* This is the way it was done before the CAM stuff was removed. */
if (rf_extract_ids(badDisk->devname, &bus, &targ, &lun)) {
printf("COPYBACK: unable to extract bus, target, lun from"
" devname %s.\n", badDisk->devname);
return;
}
/*
* TUR the disk that's marked as bad to be sure that it's actually
* alive.
*/
rf_SCSI_AllocTUR(&tur_op);
retcode = rf_SCSI_DoTUR(tur_op, bus, targ, lun, badDisk->dev);
rf_SCSI_FreeDiskOp(tur_op, 0);
#endif
if (retcode) {
printf("COPYBACK: target disk failed TUR.\n");
return;
}
/* Get a buffer to hold one SU. */
RF_Malloc(databuf, rf_RaidAddressToByte(raidPtr,
raidPtr->Layout.sectorsPerStripeUnit), (char *));
/* Create a descriptor. */
RF_Malloc(desc, sizeof(*desc), (RF_CopybackDesc_t *));
desc->raidPtr = raidPtr;
desc->status = 0;
desc->frow = frow;
desc->fcol = fcol;
desc->spRow = badDisk->spareRow;
desc->spCol = badDisk->spareCol;
desc->stripeAddr = 0;
desc->sectPerSU = raidPtr->Layout.sectorsPerStripeUnit;
desc->sectPerStripe = raidPtr->Layout.sectorsPerStripeUnit *
raidPtr->Layout.numDataCol;
desc->databuf = databuf;
desc->mcpair = rf_AllocMCPair();
printf("COPYBACK: Quiescing the array.\n");
/*
* Quiesce the array, since we don't want to code support for user
* accs here.
*/
rf_SuspendNewRequestsAndWait(raidPtr);
/* Adjust state of the array and of the disks. */
RF_LOCK_MUTEX(raidPtr->mutex);
raidPtr->Disks[desc->frow][desc->fcol].status = rf_ds_optimal;
raidPtr->status[desc->frow] = rf_rs_optimal;
rf_copyback_in_progress = 1; /* Debug only. */
RF_UNLOCK_MUTEX(raidPtr->mutex);
printf("COPYBACK: Beginning\n");
RF_GETTIME(desc->starttime);
rf_ContinueCopyback(desc);
/*
* Data has been restored.
* Fix up the component label.
* Don't actually need the read here.
*/
raidread_component_label(raidPtr->raid_cinfo[frow][fcol].ci_dev,
raidPtr->raid_cinfo[frow][fcol].ci_vp,
&c_label);
raid_init_component_label(raidPtr, &c_label);
c_label.row = frow;
c_label.column = fcol;
raidwrite_component_label(raidPtr->raid_cinfo[frow][fcol].ci_dev,
raidPtr->raid_cinfo[frow][fcol].ci_vp,
&c_label);
}
/****************************************************************************
*
* Initialize the disks comprising the array.
*
* We want the spare disks to have regular row,col numbers so that we can
* easily substitue a spare for a failed disk. But, the driver code assumes
* throughout that the array contains numRow by numCol _non-spare_ disks, so
* it's not clear how to fit in the spares. This is an unfortunate holdover
* from raidSim. The quick and dirty fix is to make row zero bigger than the
* rest, and put all the spares in it. This probably needs to get changed
* eventually.
*
****************************************************************************/
int
rf_ConfigureDisks(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
RF_Config_t *cfgPtr)
{
RF_RaidDisk_t **disks;
RF_SectorCount_t min_numblks = (RF_SectorCount_t) 0x7FFFFFFFFFFFLL;
RF_RowCol_t r, c;
int bs, ret;
unsigned i, count, foundone = 0, numFailuresThisRow;
int force;
force = cfgPtr->force;
ret = rf_AllocDiskStructures(raidPtr, cfgPtr);
if (ret)
goto fail;
disks = raidPtr->Disks;
for (r = 0; r < raidPtr->numRow; r++) {
numFailuresThisRow = 0;
for (c = 0; c < raidPtr->numCol; c++) {
ret = rf_ConfigureDisk(raidPtr,
&cfgPtr->devnames[r][c][0], &disks[r][c], r, c);
if (ret)
goto fail;
if (disks[r][c].status == rf_ds_optimal) {
raidread_component_label(
raidPtr->raid_cinfo[r][c].ci_dev,
raidPtr->raid_cinfo[r][c].ci_vp,
&raidPtr->raid_cinfo[r][c].ci_label);
}
if (disks[r][c].status != rf_ds_optimal) {
numFailuresThisRow++;
} else {
if (disks[r][c].numBlocks < min_numblks)
min_numblks = disks[r][c].numBlocks;
DPRINTF7("Disk at row %d col %d: dev %s"
" numBlocks %ld blockSize %d (%ld MB)\n",
r, c, disks[r][c].devname,
(long int) disks[r][c].numBlocks,
disks[r][c].blockSize,
(long int) disks[r][c].numBlocks *
disks[r][c].blockSize / 1024 / 1024);
}
}
/* XXX Fix for n-fault tolerant. */
/*
* XXX This should probably check to see how many failures
* we can handle for this configuration !
*/
if (numFailuresThisRow > 0)
raidPtr->status[r] = rf_rs_degraded;
}
/*
* All disks must be the same size & have the same block size, bs must
* be a power of 2.
*/
bs = 0;
for (foundone = r = 0; !foundone && r < raidPtr->numRow; r++) {
for (c = 0; !foundone && c < raidPtr->numCol; c++) {
if (disks[r][c].status == rf_ds_optimal) {
bs = disks[r][c].blockSize;
foundone = 1;
}
}
}
if (!foundone) {
RF_ERRORMSG("RAIDFRAME: Did not find any live disks in"
" the array.\n");
ret = EINVAL;
goto fail;
}
for (count = 0, i = 1; i; i <<= 1)
if (bs & i)
count++;
if (count != 1) {
RF_ERRORMSG1("Error: block size on disks (%d) must be a"
" power of 2.\n", bs);
ret = EINVAL;
goto fail;
}
if (rf_CheckLabels(raidPtr, cfgPtr)) {
printf("raid%d: There were fatal errors\n", raidPtr->raidid);
if (force != 0) {
printf("raid%d: Fatal errors being ignored.\n",
raidPtr->raidid);
} else {
ret = EINVAL;
goto fail;
}
}
for (r = 0; r < raidPtr->numRow; r++) {
for (c = 0; c < raidPtr->numCol; c++) {
if (disks[r][c].status == rf_ds_optimal) {
if (disks[r][c].blockSize != bs) {
RF_ERRORMSG2("Error: block size of"
" disk at r %d c %d different from"
" disk at r 0 c 0.\n", r, c);
ret = EINVAL;
goto fail;
}
if (disks[r][c].numBlocks != min_numblks) {
RF_ERRORMSG3("WARNING: truncating disk"
" at r %d c %d to %d blocks.\n",
r, c, (int) min_numblks);
disks[r][c].numBlocks = min_numblks;
}
}
}
}
raidPtr->sectorsPerDisk = min_numblks;
raidPtr->logBytesPerSector = ffs(bs) - 1;
raidPtr->bytesPerSector = bs;
raidPtr->sectorMask = bs - 1;
return (0);
fail:
rf_UnconfigureVnodes(raidPtr);
return (ret);
}