diff options
Diffstat (limited to 'sys/dev/raidframe/rf_declusterPQ.c')
| -rw-r--r-- | sys/dev/raidframe/rf_declusterPQ.c | 491 |
1 files changed, 491 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_declusterPQ.c b/sys/dev/raidframe/rf_declusterPQ.c new file mode 100644 index 0000000..77a03b8 --- /dev/null +++ b/sys/dev/raidframe/rf_declusterPQ.c @@ -0,0 +1,491 @@ +/* $FreeBSD$ */ +/* $NetBSD: rf_declusterPQ.c,v 1.5 2001/01/26 14:06:17 oster Exp $ */ +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Authors: Daniel Stodolsky, 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_declusterPQ.c + * + * mapping code for declustered P & Q or declustered EvenOdd + * much code borrowed from rf_decluster.c + * + *--------------------------------------------------*/ + +#include <dev/raidframe/rf_archs.h> +#include <dev/raidframe/rf_types.h> +#include <dev/raidframe/rf_raid.h> +#include <dev/raidframe/rf_configure.h> +#include <dev/raidframe/rf_decluster.h> +#include <dev/raidframe/rf_declusterPQ.h> +#include <dev/raidframe/rf_debugMem.h> +#include <dev/raidframe/rf_utils.h> +#include <dev/raidframe/rf_alloclist.h> +#include <dev/raidframe/rf_general.h> + +#if (RF_INCLUDE_PARITY_DECLUSTERING_PQ > 0) || (RF_INCLUDE_EVENODD > 0) +/* configuration code */ + +int +rf_ConfigureDeclusteredPQ( + RF_ShutdownList_t ** listp, + RF_Raid_t * raidPtr, + RF_Config_t * cfgPtr) +{ + RF_RaidLayout_t *layoutPtr = &(raidPtr->Layout); + int b, v, k, r, lambda; /* block design params */ + int i, j, l; + int *first_avail_slot; + int complete_FT_count, SUID; + RF_DeclusteredConfigInfo_t *info; + int numCompleteFullTablesPerDisk; + int PUsPerDisk, spareRegionDepthInPUs, numCompleteSpareRegionsPerDisk = 0, + extraPUsPerDisk; + int totSparePUsPerDisk; + int diskOffsetOfLastFullTableInSUs, SpareSpaceInSUs; + char *cfgBuf = (char *) (cfgPtr->layoutSpecific); + + cfgBuf += RF_SPAREMAP_NAME_LEN; + + b = *((int *) cfgBuf); + cfgBuf += sizeof(int); + v = *((int *) cfgBuf); + cfgBuf += sizeof(int); + k = *((int *) cfgBuf); + cfgBuf += sizeof(int); + r = *((int *) cfgBuf); + cfgBuf += sizeof(int); + lambda = *((int *) cfgBuf); + cfgBuf += sizeof(int); + raidPtr->noRotate = *((int *) cfgBuf); + cfgBuf += sizeof(int); + + if (k <= 2) { + printf("RAIDFRAME: k=%d, minimum value 2\n", k); + return (EINVAL); + } + /* 1. create layout specific structure */ + RF_MallocAndAdd(info, sizeof(RF_DeclusteredConfigInfo_t), (RF_DeclusteredConfigInfo_t *), raidPtr->cleanupList); + if (info == NULL) + return (ENOMEM); + layoutPtr->layoutSpecificInfo = (void *) info; + + /* the sparemaps are generated assuming that parity is rotated, so we + * issue a warning if both distributed sparing and no-rotate are on at + * the same time */ + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE) && raidPtr->noRotate) { + RF_ERRORMSG("Warning: distributed sparing specified without parity rotation.\n"); + } + if (raidPtr->numCol != v) { + RF_ERRORMSG2("RAID: config error: table element count (%d) not equal to no. of cols (%d)\n", v, raidPtr->numCol); + return (EINVAL); + } + /* 3. set up the values used in devRaidMap */ + info->BlocksPerTable = b; + info->NumParityReps = info->groupSize = k; + info->PUsPerBlock = k - 2; /* PQ */ + info->SUsPerTable = b * info->PUsPerBlock * layoutPtr->SUsPerPU; /* b blks, k-1 SUs each */ + info->SUsPerFullTable = k * info->SUsPerTable; /* rot k times */ + info->SUsPerBlock = info->PUsPerBlock * layoutPtr->SUsPerPU; + info->TableDepthInPUs = (b * k) / v; + info->FullTableDepthInPUs = info->TableDepthInPUs * k; /* k repetitions */ + + /* used only in distributed sparing case */ + info->FullTablesPerSpareRegion = (v - 1) / rf_gcd(r, v - 1); /* (v-1)/gcd fulltables */ + info->TablesPerSpareRegion = k * info->FullTablesPerSpareRegion; + info->SpareSpaceDepthPerRegionInSUs = (r * info->TablesPerSpareRegion / (v - 1)) * layoutPtr->SUsPerPU; + + /* check to make sure the block design is sufficiently small */ + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE)) { + if (info->FullTableDepthInPUs * layoutPtr->SUsPerPU + info->SpareSpaceDepthPerRegionInSUs > layoutPtr->stripeUnitsPerDisk) { + RF_ERRORMSG3("RAID: config error: Full Table depth (%d) + Spare Space (%d) larger than disk size (%d) (BD too big)\n", + (int) info->FullTableDepthInPUs, + (int) info->SpareSpaceDepthPerRegionInSUs, + (int) layoutPtr->stripeUnitsPerDisk); + return (EINVAL); + } + } else { + if (info->TableDepthInPUs * layoutPtr->SUsPerPU > layoutPtr->stripeUnitsPerDisk) { + RF_ERRORMSG2("RAID: config error: Table depth (%d) larger than disk size (%d) (BD too big)\n", + (int) (info->TableDepthInPUs * layoutPtr->SUsPerPU), + (int) layoutPtr->stripeUnitsPerDisk); + return (EINVAL); + } + } + + + /* compute the size of each disk, and the number of tables in the last + * fulltable (which need not be complete) */ + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE)) { + + PUsPerDisk = layoutPtr->stripeUnitsPerDisk / layoutPtr->SUsPerPU; + spareRegionDepthInPUs = (info->TablesPerSpareRegion * info->TableDepthInPUs + + (info->TablesPerSpareRegion * info->TableDepthInPUs) / (v - 1)); + info->SpareRegionDepthInSUs = spareRegionDepthInPUs * layoutPtr->SUsPerPU; + + numCompleteSpareRegionsPerDisk = PUsPerDisk / spareRegionDepthInPUs; + info->NumCompleteSRs = numCompleteSpareRegionsPerDisk; + extraPUsPerDisk = PUsPerDisk % spareRegionDepthInPUs; + + /* assume conservatively that we need the full amount of spare + * space in one region in order to provide spares for the + * partial spare region at the end of the array. We set "i" + * to the number of tables in the partial spare region. This + * may actually include some fulltables. */ + extraPUsPerDisk -= (info->SpareSpaceDepthPerRegionInSUs / layoutPtr->SUsPerPU); + if (extraPUsPerDisk <= 0) + i = 0; + else + i = extraPUsPerDisk / info->TableDepthInPUs; + + complete_FT_count = raidPtr->numRow * (numCompleteSpareRegionsPerDisk * (info->TablesPerSpareRegion / k) + i / k); + info->FullTableLimitSUID = complete_FT_count * info->SUsPerFullTable; + info->ExtraTablesPerDisk = i % k; + + /* note that in the last spare region, the spare space is + * complete even though data/parity space is not */ + totSparePUsPerDisk = (numCompleteSpareRegionsPerDisk + 1) * (info->SpareSpaceDepthPerRegionInSUs / layoutPtr->SUsPerPU); + info->TotSparePUsPerDisk = totSparePUsPerDisk; + + layoutPtr->stripeUnitsPerDisk = + ((complete_FT_count / raidPtr->numRow) * info->FullTableDepthInPUs + /* data & parity space */ + info->ExtraTablesPerDisk * info->TableDepthInPUs + + totSparePUsPerDisk /* spare space */ + ) * layoutPtr->SUsPerPU; + layoutPtr->dataStripeUnitsPerDisk = + (complete_FT_count * info->FullTableDepthInPUs + info->ExtraTablesPerDisk * info->TableDepthInPUs) + * layoutPtr->SUsPerPU * (k - 1) / k; + + } else { + /* non-dist spare case: force each disk to contain an + * integral number of tables */ + layoutPtr->stripeUnitsPerDisk /= (info->TableDepthInPUs * layoutPtr->SUsPerPU); + layoutPtr->stripeUnitsPerDisk *= (info->TableDepthInPUs * layoutPtr->SUsPerPU); + + /* compute the number of tables in the last fulltable, which + * need not be complete */ + complete_FT_count = + ((layoutPtr->stripeUnitsPerDisk / layoutPtr->SUsPerPU) / info->FullTableDepthInPUs) * raidPtr->numRow; + + info->FullTableLimitSUID = complete_FT_count * info->SUsPerFullTable; + info->ExtraTablesPerDisk = + ((layoutPtr->stripeUnitsPerDisk / layoutPtr->SUsPerPU) / info->TableDepthInPUs) % k; + } + + raidPtr->sectorsPerDisk = layoutPtr->stripeUnitsPerDisk * layoutPtr->sectorsPerStripeUnit; + + /* find the disk offset of the stripe unit where the last fulltable + * starts */ + numCompleteFullTablesPerDisk = complete_FT_count / raidPtr->numRow; + diskOffsetOfLastFullTableInSUs = numCompleteFullTablesPerDisk * info->FullTableDepthInPUs * layoutPtr->SUsPerPU; + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE)) { + SpareSpaceInSUs = numCompleteSpareRegionsPerDisk * info->SpareSpaceDepthPerRegionInSUs; + diskOffsetOfLastFullTableInSUs += SpareSpaceInSUs; + info->DiskOffsetOfLastSpareSpaceChunkInSUs = + diskOffsetOfLastFullTableInSUs + info->ExtraTablesPerDisk * info->TableDepthInPUs * layoutPtr->SUsPerPU; + } + info->DiskOffsetOfLastFullTableInSUs = diskOffsetOfLastFullTableInSUs; + info->numCompleteFullTablesPerDisk = numCompleteFullTablesPerDisk; + + /* 4. create and initialize the lookup tables */ + info->LayoutTable = rf_make_2d_array(b, k, raidPtr->cleanupList); + if (info->LayoutTable == NULL) + return (ENOMEM); + info->OffsetTable = rf_make_2d_array(b, k, raidPtr->cleanupList); + if (info->OffsetTable == NULL) + return (ENOMEM); + info->BlockTable = rf_make_2d_array(info->TableDepthInPUs * layoutPtr->SUsPerPU, raidPtr->numCol, raidPtr->cleanupList); + if (info->BlockTable == NULL) + return (ENOMEM); + + first_avail_slot = (int *) rf_make_1d_array(v, NULL); + if (first_avail_slot == NULL) + return (ENOMEM); + + for (i = 0; i < b; i++) + for (j = 0; j < k; j++) + info->LayoutTable[i][j] = *cfgBuf++; + + /* initialize offset table */ + for (i = 0; i < b; i++) + for (j = 0; j < k; j++) { + info->OffsetTable[i][j] = first_avail_slot[info->LayoutTable[i][j]]; + first_avail_slot[info->LayoutTable[i][j]]++; + } + + /* initialize block table */ + for (SUID = l = 0; l < layoutPtr->SUsPerPU; l++) { + for (i = 0; i < b; i++) { + for (j = 0; j < k; j++) { + info->BlockTable[(info->OffsetTable[i][j] * layoutPtr->SUsPerPU) + l] + [info->LayoutTable[i][j]] = SUID; + } + SUID++; + } + } + + rf_free_1d_array(first_avail_slot, v); + + /* 5. set up the remaining redundant-but-useful parameters */ + + raidPtr->totalSectors = (k * complete_FT_count + raidPtr->numRow * info->ExtraTablesPerDisk) * + info->SUsPerTable * layoutPtr->sectorsPerStripeUnit; + layoutPtr->numStripe = (raidPtr->totalSectors / layoutPtr->sectorsPerStripeUnit) / (k - 2); + + /* strange evaluation order below to try and minimize overflow + * problems */ + + layoutPtr->dataSectorsPerStripe = (k - 2) * layoutPtr->sectorsPerStripeUnit; + layoutPtr->bytesPerStripeUnit = layoutPtr->sectorsPerStripeUnit << raidPtr->logBytesPerSector; + layoutPtr->numDataCol = k - 2; + layoutPtr->numParityCol = 2; + + return (0); +} + +int +rf_GetDefaultNumFloatingReconBuffersPQ(RF_Raid_t * raidPtr) +{ + int def_decl; + + def_decl = rf_GetDefaultNumFloatingReconBuffersDeclustered(raidPtr); + return (RF_MAX(3 * raidPtr->numCol, def_decl)); +} + +void +rf_MapSectorDeclusteredPQ( + RF_Raid_t * raidPtr, + RF_RaidAddr_t raidSector, + RF_RowCol_t * row, + RF_RowCol_t * col, + RF_SectorNum_t * diskSector, + int remap) +{ + RF_RaidLayout_t *layoutPtr = &(raidPtr->Layout); + RF_DeclusteredConfigInfo_t *info = (RF_DeclusteredConfigInfo_t *) layoutPtr->layoutSpecificInfo; + RF_StripeNum_t SUID = raidSector / layoutPtr->sectorsPerStripeUnit; + RF_StripeNum_t FullTableID, FullTableOffset, TableID, TableOffset; + RF_StripeNum_t BlockID, BlockOffset, RepIndex; + RF_StripeCount_t sus_per_fulltable = info->SUsPerFullTable; + RF_StripeCount_t fulltable_depth = info->FullTableDepthInPUs * layoutPtr->SUsPerPU; + RF_StripeNum_t base_suid = 0, outSU, SpareRegion = 0, SpareSpace = 0; + + rf_decluster_adjust_params(layoutPtr, &SUID, &sus_per_fulltable, &fulltable_depth, &base_suid); + + FullTableID = SUID / sus_per_fulltable; /* fulltable ID within array + * (across rows) */ + *row = FullTableID % raidPtr->numRow; + FullTableID /= raidPtr->numRow; /* convert to fulltable ID on this + * disk */ + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE)) { + SpareRegion = FullTableID / info->FullTablesPerSpareRegion; + SpareSpace = SpareRegion * info->SpareSpaceDepthPerRegionInSUs; + } + FullTableOffset = SUID % sus_per_fulltable; + TableID = FullTableOffset / info->SUsPerTable; + TableOffset = FullTableOffset - TableID * info->SUsPerTable; + BlockID = TableOffset / info->PUsPerBlock; + BlockOffset = TableOffset - BlockID * info->PUsPerBlock; + BlockID %= info->BlocksPerTable; + RF_ASSERT(BlockOffset < info->groupSize - 2); + /* + TableIDs go from 0 .. GroupSize-1 inclusive. + PUsPerBlock is k-2. + We want the tableIDs to rotate from the + right, so use GroupSize + */ + RepIndex = info->groupSize - 1 - TableID; + RF_ASSERT(RepIndex >= 0); + if (!raidPtr->noRotate) { + if (TableID == 0) + BlockOffset++; /* P on last drive, Q on first */ + else + BlockOffset += ((BlockOffset >= RepIndex) ? 2 : 0); /* skip over PQ */ + RF_ASSERT(BlockOffset < info->groupSize); + *col = info->LayoutTable[BlockID][BlockOffset]; + } + /* remap to distributed spare space if indicated */ + if (remap) { + rf_remap_to_spare_space(layoutPtr, info, *row, FullTableID, TableID, BlockID, (base_suid) ? 1 : 0, SpareRegion, col, &outSU); + } else { + + outSU = base_suid; + outSU += FullTableID * fulltable_depth; /* offs to strt of FT */ + outSU += SpareSpace; /* skip rsvd spare space */ + outSU += TableID * info->TableDepthInPUs * layoutPtr->SUsPerPU; /* offs to strt of tble */ + outSU += info->OffsetTable[BlockID][BlockOffset] * layoutPtr->SUsPerPU; /* offs to the PU */ + } + outSU += TableOffset / (info->BlocksPerTable * info->PUsPerBlock); /* offs to the SU within + * a PU */ + + /* convert SUs to sectors, and, if not aligned to SU boundary, add in + * offset to sector */ + *diskSector = outSU * layoutPtr->sectorsPerStripeUnit + (raidSector % layoutPtr->sectorsPerStripeUnit); +} + + +void +rf_MapParityDeclusteredPQ( + RF_Raid_t * raidPtr, + RF_RaidAddr_t raidSector, + RF_RowCol_t * row, + RF_RowCol_t * col, + RF_SectorNum_t * diskSector, + int remap) +{ + RF_RaidLayout_t *layoutPtr = &(raidPtr->Layout); + RF_DeclusteredConfigInfo_t *info = (RF_DeclusteredConfigInfo_t *) layoutPtr->layoutSpecificInfo; + RF_StripeNum_t SUID = raidSector / layoutPtr->sectorsPerStripeUnit; + RF_StripeNum_t FullTableID, FullTableOffset, TableID, TableOffset; + RF_StripeNum_t BlockID, BlockOffset, RepIndex; + RF_StripeCount_t sus_per_fulltable = info->SUsPerFullTable; + RF_StripeCount_t fulltable_depth = info->FullTableDepthInPUs * layoutPtr->SUsPerPU; + RF_StripeNum_t base_suid = 0, outSU, SpareRegion, SpareSpace = 0; + + rf_decluster_adjust_params(layoutPtr, &SUID, &sus_per_fulltable, &fulltable_depth, &base_suid); + + /* compute row & (possibly) spare space exactly as before */ + FullTableID = SUID / sus_per_fulltable; + *row = FullTableID % raidPtr->numRow; + FullTableID /= raidPtr->numRow; /* convert to fulltable ID on this + * disk */ + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE)) { + SpareRegion = FullTableID / info->FullTablesPerSpareRegion; + SpareSpace = SpareRegion * info->SpareSpaceDepthPerRegionInSUs; + } + /* compute BlockID and RepIndex exactly as before */ + FullTableOffset = SUID % sus_per_fulltable; + TableID = FullTableOffset / info->SUsPerTable; + TableOffset = FullTableOffset - TableID * info->SUsPerTable; + BlockID = TableOffset / info->PUsPerBlock; + BlockOffset = TableOffset - BlockID * info->PUsPerBlock; + BlockID %= info->BlocksPerTable; + + /* the parity block is in the position indicated by RepIndex */ + RepIndex = (raidPtr->noRotate) ? info->PUsPerBlock : info->groupSize - 1 - TableID; + *col = info->LayoutTable[BlockID][RepIndex]; + + if (remap) + RF_PANIC(); + + /* compute sector as before, except use RepIndex instead of + * BlockOffset */ + outSU = base_suid; + outSU += FullTableID * fulltable_depth; + outSU += SpareSpace; /* skip rsvd spare space */ + outSU += TableID * info->TableDepthInPUs * layoutPtr->SUsPerPU; + outSU += info->OffsetTable[BlockID][RepIndex] * layoutPtr->SUsPerPU; + outSU += TableOffset / (info->BlocksPerTable * info->PUsPerBlock); + + *diskSector = outSU * layoutPtr->sectorsPerStripeUnit + (raidSector % layoutPtr->sectorsPerStripeUnit); +} + +void +rf_MapQDeclusteredPQ( + RF_Raid_t * raidPtr, + RF_RaidAddr_t raidSector, + RF_RowCol_t * row, + RF_RowCol_t * col, + RF_SectorNum_t * diskSector, + int remap) +{ + RF_RaidLayout_t *layoutPtr = &(raidPtr->Layout); + RF_DeclusteredConfigInfo_t *info = (RF_DeclusteredConfigInfo_t *) layoutPtr->layoutSpecificInfo; + RF_StripeNum_t SUID = raidSector / layoutPtr->sectorsPerStripeUnit; + RF_StripeNum_t FullTableID, FullTableOffset, TableID, TableOffset; + RF_StripeNum_t BlockID, BlockOffset, RepIndex, RepIndexQ; + RF_StripeCount_t sus_per_fulltable = info->SUsPerFullTable; + RF_StripeCount_t fulltable_depth = info->FullTableDepthInPUs * layoutPtr->SUsPerPU; + RF_StripeNum_t base_suid = 0, outSU, SpareRegion, SpareSpace = 0; + + rf_decluster_adjust_params(layoutPtr, &SUID, &sus_per_fulltable, &fulltable_depth, &base_suid); + + /* compute row & (possibly) spare space exactly as before */ + FullTableID = SUID / sus_per_fulltable; + *row = FullTableID % raidPtr->numRow; + FullTableID /= raidPtr->numRow; /* convert to fulltable ID on this + * disk */ + if ((raidPtr->Layout.map->flags & RF_DISTRIBUTE_SPARE)) { + SpareRegion = FullTableID / info->FullTablesPerSpareRegion; + SpareSpace = SpareRegion * info->SpareSpaceDepthPerRegionInSUs; + } + /* compute BlockID and RepIndex exactly as before */ + FullTableOffset = SUID % sus_per_fulltable; + TableID = FullTableOffset / info->SUsPerTable; + TableOffset = FullTableOffset - TableID * info->SUsPerTable; + BlockID = TableOffset / info->PUsPerBlock; + BlockOffset = TableOffset - BlockID * info->PUsPerBlock; + BlockID %= info->BlocksPerTable; + + /* the q block is in the position indicated by RepIndex */ + RepIndex = (raidPtr->noRotate) ? info->PUsPerBlock : info->groupSize - 1 - TableID; + RepIndexQ = ((RepIndex == (info->groupSize - 1)) ? 0 : RepIndex + 1); + *col = info->LayoutTable[BlockID][RepIndexQ]; + + if (remap) + RF_PANIC(); + + /* compute sector as before, except use RepIndex instead of + * BlockOffset */ + outSU = base_suid; + outSU += FullTableID * fulltable_depth; + outSU += SpareSpace; /* skip rsvd spare space */ + outSU += TableID * info->TableDepthInPUs * layoutPtr->SUsPerPU; + outSU += TableOffset / (info->BlocksPerTable * info->PUsPerBlock); + + outSU += info->OffsetTable[BlockID][RepIndexQ] * layoutPtr->SUsPerPU; + *diskSector = outSU * layoutPtr->sectorsPerStripeUnit + (raidSector % layoutPtr->sectorsPerStripeUnit); +} +/* returns an array of ints identifying the disks that comprise the stripe containing the indicated address. + * the caller must _never_ attempt to modify this array. + */ +void +rf_IdentifyStripeDeclusteredPQ( + RF_Raid_t * raidPtr, + RF_RaidAddr_t addr, + RF_RowCol_t ** diskids, + RF_RowCol_t * outRow) +{ + RF_RaidLayout_t *layoutPtr = &(raidPtr->Layout); + RF_DeclusteredConfigInfo_t *info = (RF_DeclusteredConfigInfo_t *) layoutPtr->layoutSpecificInfo; + RF_StripeCount_t sus_per_fulltable = info->SUsPerFullTable; + RF_StripeCount_t fulltable_depth = info->FullTableDepthInPUs * layoutPtr->SUsPerPU; + RF_StripeNum_t base_suid = 0; + RF_StripeNum_t SUID = rf_RaidAddressToStripeUnitID(layoutPtr, addr); + RF_StripeNum_t stripeID, FullTableID; + int tableOffset; + + rf_decluster_adjust_params(layoutPtr, &SUID, &sus_per_fulltable, &fulltable_depth, &base_suid); + FullTableID = SUID / sus_per_fulltable; /* fulltable ID within array + * (across rows) */ + *outRow = FullTableID % raidPtr->numRow; + stripeID = rf_StripeUnitIDToStripeID(layoutPtr, SUID); /* find stripe offset + * into array */ + tableOffset = (stripeID % info->BlocksPerTable); /* find offset into + * block design table */ + *diskids = info->LayoutTable[tableOffset]; +} +#endif /* (RF_INCLUDE_PARITY_DECLUSTERING_PQ > 0) || (RF_INCLUDE_EVENODD > 0) */ |
