mirror of
git://sourceware.org/git/lvm2.git
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b5c8e591ed
Keep single source for most of values printed in lvm.conf (still needs some conversion) Correct max for logical threads to 60 (we may refuse some older configuration which might eventually user higher numbers - but so far let's assume no user have ever set this as it's been non-trivial and if would complicate code unnecessarily.) Accept maximum of 4PiB for virtual size of VDO LV (lvm2 will drop 'header borders to 0 for this case').
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*
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* Copyright (C) 2018-2022 Red Hat, Inc. All rights reserved.
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*
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* This file is part of the device-mapper userspace tools.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef DEVICE_MAPPER_VDO_LIMITS_H
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#define DEVICE_MAPPER_VDO_LIMITS_H
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#ifndef SECTOR_SHIFT
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#define SECTOR_SHIFT 9L
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#endif
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#define DM_VDO_BLOCK_SIZE UINT64_C(8) // 4KiB in sectors
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#define DM_VDO_BLOCK_SIZE_KB (DM_VDO_BLOCK_SIZE << SECTOR_SHIFT)
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#define DM_VDO_BLOCK_MAP_CACHE_SIZE_MINIMUM_MB (128) // 128MiB
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#define DM_VDO_BLOCK_MAP_CACHE_SIZE_MAXIMUM_MB (16 * 1024 * 1024 - 1) // 16TiB - 1
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#define DM_VDO_BLOCK_MAP_CACHE_SIZE_MINIMUM_PER_LOGICAL_THREAD (4096 * DM_VDO_BLOCK_SIZE_KB)
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#define DM_VDO_BLOCK_MAP_ERA_LENGTH_MINIMUM 1
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#define DM_VDO_BLOCK_MAP_ERA_LENGTH_MAXIMUM 16380
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#define DM_VDO_INDEX_MEMORY_SIZE_MINIMUM_MB 256 // 0.25 GiB
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#define DM_VDO_INDEX_MEMORY_SIZE_MAXIMUM_MB (1024 * 1024 * 1024) // 1TiB
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#define DM_VDO_SLAB_SIZE_MINIMUM_MB 128 // 128MiB
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#define DM_VDO_SLAB_SIZE_MAXIMUM_MB (32 * 1024) // 32GiB
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#define DM_VDO_SLABS_MAXIMUM 8192
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#define DM_VDO_LOGICAL_SIZE_MAXIMUM (UINT64_C(4) * 1024 * 1024 * 1024 * 1024 * 1024 >> SECTOR_SHIFT) // 4PiB
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#define DM_VDO_PHYSICAL_SIZE_MAXIMUM (UINT64_C(64) * DM_VDO_BLOCK_SIZE_KB * 1024 * 1024 * 1024 >> SECTOR_SHIFT) // 256TiB
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#define DM_VDO_ACK_THREADS_MINIMUM 0
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#define DM_VDO_ACK_THREADS_MAXIMUM 100
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#define DM_VDO_BIO_THREADS_MINIMUM 1
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#define DM_VDO_BIO_THREADS_MAXIMUM 100
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#define DM_VDO_BIO_ROTATION_MINIMUM 1
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#define DM_VDO_BIO_ROTATION_MAXIMUM 1024
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#define DM_VDO_CPU_THREADS_MINIMUM 1
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#define DM_VDO_CPU_THREADS_MAXIMUM 100
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#define DM_VDO_HASH_ZONE_THREADS_MINIMUM 0
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#define DM_VDO_HASH_ZONE_THREADS_MAXIMUM 100
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#define DM_VDO_LOGICAL_THREADS_MINIMUM 0
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#define DM_VDO_LOGICAL_THREADS_MAXIMUM 60
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#define DM_VDO_PHYSICAL_THREADS_MINIMUM 0
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#define DM_VDO_PHYSICAL_THREADS_MAXIMUM 16
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#define DM_VDO_MAX_DISCARD_MINIMUM 1
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#define DM_VDO_MAX_DISCARD_MAXIMUM (UINT32_MAX / (uint32_t)(DM_VDO_BLOCK_SIZE_KB))
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#endif // DEVICE_MAPPER_VDO_LIMITS_H
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