/* * Called whenever an array is shutdown */ static void rf_UnconfigureArray() { int rc; RF_LOCK_MUTEX(configureMutex); if (--configureCount == 0) { /* if no active configurations, shut * everything down */ isconfigged = 0; rc = rf_ShutdownList(&globalShutdown); if (rc) { RF_ERRORMSG1("RAIDFRAME: unable to do global shutdown, rc=%d\n", rc); } rf_shutdown_threadid(); /* * We must wait until now, because the AllocList module * uses the DebugMem module. */ if (rf_memDebug) rf_print_unfreed(); } RF_UNLOCK_MUTEX(configureMutex); }
static void set_debug_option(char *name, long val) { RF_DebugName_t *p; for (p = rf_debugNames; p->name; p++) { if (!strcmp(p->name, name)) { *(p->ptr) = val; printf("[Set debug variable %s to %ld]\n", name, val); return; } } RF_ERRORMSG1("Unknown debug string \"%s\"\n", name); }
/**************************************************************************************** * * 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); }
/**************************************************************************************** * 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); }
/**************************************************************************** * 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) { int i, ret; unsigned int bs; RF_RaidDisk_t *disks; int num_spares_done; num_spares_done = 0; /* * 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], 0, raidPtr->numCol + i); if (ret) goto fail; if (disks[i].status != rf_ds_optimal) { RF_ERRORMSG1("Warning: spare disk %s failed TUR\n", &cfgPtr->spare_names[i][0]); } else { /* Change status to spare. */ disks[i].status = rf_ds_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++; } /* 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 (%llu blocks) is too small" " to serve as a spare (need %llu blocks).\n", disks[i].devname, disks[i].numBlocks, raidPtr->sectorsPerDisk); ret = EINVAL; goto fail; } else if (disks[i].numBlocks > raidPtr->sectorsPerDisk) { RF_ERRORMSG2("Warning: truncating spare disk" " %s to %llu blocks.\n", disks[i].devname, raidPtr->sectorsPerDisk); disks[i].numBlocks = raidPtr->sectorsPerDisk; } } return (0); fail: /* * Release the hold on the main components. We've failed to allocate * a spare, and since we're failing, we need to free things... * * XXX Failing to allocate a spare is *not* that big of a deal... * We *can* survive without it, if need be, esp. if we get hot * adding working. * If we don't fail out here, then we need a way to remove this spare... * That should be easier to do here than if we are "live"... */ rf_UnconfigureVnodes(raidPtr); 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; 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); }
int rf_add_hot_spare(RF_Raid_t *raidPtr, RF_SingleComponent_t *sparePtr) { RF_RaidDisk_t *disks; RF_DiskQueue_t *spareQueues; int ret; unsigned int bs; int spare_number; #if 0 printf("Just in rf_add_hot_spare: %d.\n", raidPtr->numSpare); printf("Num col: %d.\n", raidPtr->numCol); #endif if (raidPtr->numSpare >= RF_MAXSPARE) { RF_ERRORMSG1("Too many spares: %d.\n", raidPtr->numSpare); return(EINVAL); } RF_LOCK_MUTEX(raidPtr->mutex); /* The beginning of the spares... */ disks = &raidPtr->Disks[0][raidPtr->numCol]; spare_number = raidPtr->numSpare; ret = rf_ConfigureDisk(raidPtr, sparePtr->component_name, &disks[spare_number], 0, raidPtr->numCol + spare_number); if (ret) goto fail; if (disks[spare_number].status != rf_ds_optimal) { RF_ERRORMSG1("Warning: spare disk %s failed TUR.\n", sparePtr->component_name); ret = EINVAL; goto fail; } else { disks[spare_number].status = rf_ds_spare; DPRINTF6("Spare Disk %d: dev %s numBlocks %ld blockSize %d" " (%ld MB).\n", spare_number, disks[spare_number].devname, (long int) disks[spare_number].numBlocks, disks[spare_number].blockSize, (long int) disks[spare_number].numBlocks * disks[spare_number].blockSize / 1024 / 1024); } /* Check sizes and block sizes on the spare disk. */ bs = 1 << raidPtr->logBytesPerSector; if (disks[spare_number].blockSize != bs) { RF_ERRORMSG3("Block size of %d on spare disk %s is not" " the same as on other disks (%d).\n", disks[spare_number].blockSize, disks[spare_number].devname, bs); ret = EINVAL; goto fail; } if (disks[spare_number].numBlocks < raidPtr->sectorsPerDisk) { RF_ERRORMSG3("Spare disk %s (%llu blocks) is too small to serve" " as a spare (need %llu blocks).\n", disks[spare_number].devname, disks[spare_number].numBlocks, raidPtr->sectorsPerDisk); ret = EINVAL; goto fail; } else { if (disks[spare_number].numBlocks > raidPtr->sectorsPerDisk) { RF_ERRORMSG2("Warning: truncating spare disk %s to %llu" " blocks.\n", disks[spare_number].devname, raidPtr->sectorsPerDisk); disks[spare_number].numBlocks = raidPtr->sectorsPerDisk; } } spareQueues = &raidPtr->Queues[0][raidPtr->numCol]; ret = rf_ConfigureDiskQueue(raidPtr, &spareQueues[spare_number], 0, raidPtr->numCol + spare_number, raidPtr->qType, raidPtr->sectorsPerDisk, raidPtr->Disks[0][raidPtr->numCol + spare_number].dev, raidPtr->maxOutstanding, &raidPtr->shutdownList, raidPtr->cleanupList); raidPtr->numSpare++; RF_UNLOCK_MUTEX(raidPtr->mutex); return (0); fail: RF_UNLOCK_MUTEX(raidPtr->mutex); return(ret); }
/***************************************************************************** * * ConfigureLayout * * Read the configuration file and set up the RAID layout parameters. * After reading common params, invokes the layout-specific configuration * routine to finish the configuration. * *****************************************************************************/ int rf_ConfigureLayout(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr, RF_Config_t *cfgPtr) { RF_RaidLayout_t *layoutPtr = &(raidPtr->Layout); RF_ParityConfig_t parityConfig; RF_LayoutSW_t *p; int retval; layoutPtr->sectorsPerStripeUnit = cfgPtr->sectPerSU; layoutPtr->SUsPerPU = cfgPtr->SUsPerPU; layoutPtr->SUsPerRU = cfgPtr->SUsPerRU; parityConfig = cfgPtr->parityConfig; if (layoutPtr->sectorsPerStripeUnit <= 0) { RF_ERRORMSG2("raid%d: Invalid sectorsPerStripeUnit: %d.\n", raidPtr->raidid, (int)layoutPtr->sectorsPerStripeUnit); return (EINVAL); } layoutPtr->stripeUnitsPerDisk = raidPtr->sectorsPerDisk / layoutPtr->sectorsPerStripeUnit; p = rf_GetLayout(parityConfig); if (p == NULL) { RF_ERRORMSG1("Unknown parity configuration '%c'", parityConfig); return (EINVAL); } RF_ASSERT(p->parityConfig == parityConfig); layoutPtr->map = p; /* Initialize the specific layout. */ retval = (p->Configure) (listp, raidPtr, cfgPtr); if (retval) return (retval); layoutPtr->dataBytesPerStripe = layoutPtr->dataSectorsPerStripe << raidPtr->logBytesPerSector; raidPtr->sectorsPerDisk = layoutPtr->stripeUnitsPerDisk * layoutPtr->sectorsPerStripeUnit; if (rf_forceNumFloatingReconBufs >= 0) { raidPtr->numFloatingReconBufs = rf_forceNumFloatingReconBufs; } else { raidPtr->numFloatingReconBufs = rf_GetDefaultNumFloatingReconBuffers(raidPtr); } if (rf_forceHeadSepLimit >= 0) { raidPtr->headSepLimit = rf_forceHeadSepLimit; } else { raidPtr->headSepLimit = rf_GetDefaultHeadSepLimit(raidPtr); } #ifdef RAIDDEBUG if (raidPtr->headSepLimit >= 0) { printf("RAIDFRAME(%s): Using %ld floating recon bufs" " with head sep limit %ld.\n", layoutPtr->map->configName, (long) raidPtr->numFloatingReconBufs, (long) raidPtr->headSepLimit); } else { printf("RAIDFRAME(%s): Using %ld floating recon bufs" " with no head sep limit.\n", layoutPtr->map->configName, (long) raidPtr->numFloatingReconBufs); } #endif /* RAIDDEBUG */ return (0); }