/**************************************************************************************** * set up the data structures describing the spare disks in the array * recall from the above comment that the spare disk descriptors are stored * in row zero, which is specially expanded to hold them. ***************************************************************************************/ int rf_ConfigureSpareDisks( RF_ShutdownList_t ** listp, RF_Raid_t * raidPtr, RF_Config_t * cfgPtr) { char buf[256]; int r, c, i, ret; RF_DiskOp_t *rdcap_op = NULL, *tur_op = NULL; unsigned bs; RF_RaidDisk_t *disks; int num_spares_done; struct proc *proc; #if !defined(__NetBSD__) && !defined(__OpenBSD__) ret = rf_SCSI_AllocReadCapacity(&rdcap_op); if (ret) goto fail; ret = rf_SCSI_AllocTUR(&tur_op); if (ret) goto fail; #endif /* !__NetBSD__ && !__OpenBSD__ */ num_spares_done = 0; proc = raidPtr->proc; /* The space for the spares should have already been allocated by * ConfigureDisks() */ disks = &raidPtr->Disks[0][raidPtr->numCol]; for (i = 0; i < raidPtr->numSpare; i++) { ret = rf_ConfigureDisk(raidPtr, &cfgPtr->spare_names[i][0], &disks[i], rdcap_op, tur_op, cfgPtr->spare_devs[i], 0, raidPtr->numCol + i); if (ret) goto fail; if (disks[i].status != rf_ds_optimal) { RF_ERRORMSG1("Warning: spare disk %s failed TUR\n", buf); } else { disks[i].status = rf_ds_spare; /* change status to * spare */ DPRINTF6("Spare Disk %d: dev %s numBlocks %ld blockSize %d (%ld MB)\n", i, disks[i].devname, (long int) disks[i].numBlocks, disks[i].blockSize, (long int) disks[i].numBlocks * disks[i].blockSize / 1024 / 1024); } num_spares_done++; } #if (defined(__NetBSD__) || defined(__OpenBSD__)) && (_KERNEL) #else rf_SCSI_FreeDiskOp(rdcap_op, 1); rdcap_op = NULL; rf_SCSI_FreeDiskOp(tur_op, 0); tur_op = NULL; #endif /* check sizes and block sizes on spare disks */ bs = 1 << raidPtr->logBytesPerSector; for (i = 0; i < raidPtr->numSpare; i++) { if (disks[i].blockSize != bs) { RF_ERRORMSG3("Block size of %d on spare disk %s is not the same as on other disks (%d)\n", disks[i].blockSize, disks[i].devname, bs); ret = EINVAL; goto fail; } if (disks[i].numBlocks < raidPtr->sectorsPerDisk) { RF_ERRORMSG3("Spare disk %s (%d blocks) is too small to serve as a spare (need %ld blocks)\n", disks[i].devname, disks[i].blockSize, (long int) raidPtr->sectorsPerDisk); ret = EINVAL; goto fail; } else if (disks[i].numBlocks > raidPtr->sectorsPerDisk) { RF_ERRORMSG2("Warning: truncating spare disk %s to %ld blocks\n", disks[i].devname, (long int) raidPtr->sectorsPerDisk); disks[i].numBlocks = raidPtr->sectorsPerDisk; } } return (0); fail: #if (defined(__NetBSD__) || defined(__OpenBSD__)) && defined(_KERNEL) /* Release the hold on the main components. We've failed to allocate * a spare, and since we're failing, we need to free things.. */ for (r = 0; r < raidPtr->numRow; r++) { for (c = 0; c < raidPtr->numCol; c++) { /* Cleanup.. */ #ifdef DEBUG printf("Cleaning up row: %d col: %d\n", r, c); #endif if (raidPtr->raid_cinfo[r][c].ci_vp) { (void) vn_close(raidPtr->raid_cinfo[r][c].ci_vp, FREAD | FWRITE, proc->p_ucred, proc); } } } for (i = 0; i < raidPtr->numSpare; i++) { /* Cleanup.. */ #ifdef DEBUG printf("Cleaning up spare: %d\n", i); #endif if (raidPtr->raid_cinfo[0][raidPtr->numCol + i].ci_vp) { (void) vn_close(raidPtr->raid_cinfo[0][raidPtr->numCol + i].ci_vp, FREAD | FWRITE, proc->p_ucred, proc); } } #else if (rdcap_op) rf_SCSI_FreeDiskOp(rdcap_op, 1); if (tur_op) rf_SCSI_FreeDiskOp(tur_op, 0); #endif return (ret); }
/**************************************************************************************** * * 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; RF_DiskOp_t *rdcap_op = NULL, *tur_op = NULL; int num_rows_done, num_cols_done; struct proc *proc = 0; #if !defined(__NetBSD__) && !defined(__OpenBSD__) ret = rf_SCSI_AllocReadCapacity(&rdcap_op); if (ret) goto fail; ret = rf_SCSI_AllocTUR(&tur_op); if (ret) goto fail; #endif /* !__NetBSD__ && !__OpenBSD__ */ num_rows_done = 0; num_cols_done = 0; RF_CallocAndAdd(disks, raidPtr->numRow, sizeof(RF_RaidDisk_t *), (RF_RaidDisk_t **), raidPtr->cleanupList); if (disks == NULL) { ret = ENOMEM; goto fail; } raidPtr->Disks = disks; proc = raidPtr->proc; /* Blah XXX */ /* get space for the device-specific stuff... */ RF_CallocAndAdd(raidPtr->raid_cinfo, raidPtr->numRow, sizeof(struct raidcinfo *), (struct raidcinfo **), raidPtr->cleanupList); if (raidPtr->raid_cinfo == NULL) { ret = ENOMEM; goto fail; } for (r = 0; r < raidPtr->numRow; r++) { numFailuresThisRow = 0; RF_CallocAndAdd(disks[r], raidPtr->numCol + ((r == 0) ? raidPtr->numSpare : 0), sizeof(RF_RaidDisk_t), (RF_RaidDisk_t *), raidPtr->cleanupList); if (disks[r] == NULL) { ret = ENOMEM; goto fail; } /* get more space for device specific stuff.. */ RF_CallocAndAdd(raidPtr->raid_cinfo[r], raidPtr->numCol + ((r == 0) ? raidPtr->numSpare : 0), sizeof(struct raidcinfo), (struct raidcinfo *), raidPtr->cleanupList); if (raidPtr->raid_cinfo[r] == NULL) { ret = ENOMEM; goto fail; } for (c = 0; c < raidPtr->numCol; c++) { ret = rf_ConfigureDisk(raidPtr, &cfgPtr->devnames[r][c][0], &disks[r][c], rdcap_op, tur_op, cfgPtr->devs[r][c], r, c); if (ret) goto fail; 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); } num_cols_done++; } /* XXX fix for n-fault tolerant */ if (numFailuresThisRow > 0) raidPtr->status[r] = rf_rs_degraded; num_rows_done++; } #if (defined(__NetBSD__) || defined(__OpenBSD__)) && defined(_KERNEL) /* we do nothing */ #else rf_SCSI_FreeDiskOp(rdcap_op, 1); rdcap_op = NULL; rf_SCSI_FreeDiskOp(tur_op, 0); tur_op = NULL; #endif /* 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; } 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: #if (defined(__NetBSD__) || defined(__OpenBSD__)) && defined(_KERNEL) for (r = 0; r < raidPtr->numRow; r++) { for (c = 0; c < raidPtr->numCol; c++) { /* Cleanup.. */ #ifdef DEBUG printf("Cleaning up row: %d col: %d\n", r, c); #endif if (raidPtr->raid_cinfo[r][c].ci_vp) { (void) vn_close(raidPtr->raid_cinfo[r][c].ci_vp, FREAD | FWRITE, proc->p_ucred, proc); } } } /* Space allocated for raid_vpp will get cleaned up at some other * point */ /* XXX Need more #ifdefs in the above... */ #else if (rdcap_op) rf_SCSI_FreeDiskOp(rdcap_op, 1); if (tur_op) rf_SCSI_FreeDiskOp(tur_op, 0); #endif return (ret); }
/* 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); }