mirror of
https://github.com/torvalds/linux.git
synced 2026-05-12 16:18:45 +02:00
2fb98e4170
Extend the dm table line with three new optional parameters: indexMemory (UDS index memory size), indexSparse (dense vs sparse index), and slabSize (blocks per allocation slab). These values are parsed, validated, and stored in the device configuration for use during formatting. Rework the slab size constants from the single MAX_VDO_SLAB_BITS into explicit MIN_VDO_SLAB_BLOCKS, MAX_VDO_SLAB_BLOCKS, and DEFAULT_VDO_SLAB_BLOCKS values. Bump the target version from 9.1.0 to 9.2.0 to reflect this table line change. Signed-off-by: Bruce Johnston <bjohnsto@redhat.com> Reviewed-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright 2023 Red Hat
|
|
*/
|
|
|
|
#ifndef VDO_CONSTANTS_H
|
|
#define VDO_CONSTANTS_H
|
|
|
|
#include <linux/blkdev.h>
|
|
|
|
#include "types.h"
|
|
|
|
enum {
|
|
/*
|
|
* The maximum number of contiguous PBNs which will go to a single bio submission queue,
|
|
* assuming there is more than one queue.
|
|
*/
|
|
VDO_BIO_ROTATION_INTERVAL_LIMIT = 1024,
|
|
|
|
/* The number of entries on a block map page */
|
|
VDO_BLOCK_MAP_ENTRIES_PER_PAGE = 812,
|
|
|
|
/* The origin of the flat portion of the block map */
|
|
VDO_BLOCK_MAP_FLAT_PAGE_ORIGIN = 1,
|
|
|
|
/*
|
|
* The height of a block map tree. Assuming a root count of 60 and 812 entries per page,
|
|
* this is big enough to represent almost 95 PB of logical space.
|
|
*/
|
|
VDO_BLOCK_MAP_TREE_HEIGHT = 5,
|
|
|
|
/* The default number of bio submission queues. */
|
|
DEFAULT_VDO_BIO_SUBMIT_QUEUE_COUNT = 4,
|
|
|
|
/* The number of contiguous PBNs to be submitted to a single bio queue. */
|
|
DEFAULT_VDO_BIO_SUBMIT_QUEUE_ROTATE_INTERVAL = 64,
|
|
|
|
/* The number of trees in the arboreal block map */
|
|
DEFAULT_VDO_BLOCK_MAP_TREE_ROOT_COUNT = 60,
|
|
|
|
/* The default size of the recovery journal, in blocks */
|
|
DEFAULT_VDO_RECOVERY_JOURNAL_SIZE = 32 * 1024,
|
|
|
|
/* The default size of each slab journal, in blocks */
|
|
DEFAULT_VDO_SLAB_JOURNAL_SIZE = 224,
|
|
|
|
/* The recovery journal starting sequence number set at format time */
|
|
RECOVERY_JOURNAL_STARTING_SEQUENCE_NUMBER = 1,
|
|
|
|
/*
|
|
* The initial size of lbn_operations and pbn_operations, which is based upon the expected
|
|
* maximum number of outstanding VIOs. This value was chosen to make it highly unlikely
|
|
* that the maps would need to be resized.
|
|
*/
|
|
VDO_LOCK_MAP_CAPACITY = 10000,
|
|
|
|
/* The maximum number of logical zones */
|
|
MAX_VDO_LOGICAL_ZONES = 60,
|
|
|
|
/* The maximum number of physical zones */
|
|
MAX_VDO_PHYSICAL_ZONES = 16,
|
|
|
|
/* The default blocks in one slab */
|
|
DEFAULT_VDO_SLAB_BLOCKS = 1U << 19,
|
|
|
|
/* The minimum blocks in one slab */
|
|
MIN_VDO_SLAB_BLOCKS = 1U << 13,
|
|
|
|
/* The maximum blocks in one slab */
|
|
MAX_VDO_SLAB_BLOCKS = 1U << 23,
|
|
|
|
/* The maximum number of slabs the slab depot supports */
|
|
MAX_VDO_SLABS = 8192,
|
|
|
|
/*
|
|
* The maximum number of block map pages to load simultaneously during recovery or rebuild.
|
|
*/
|
|
MAXIMUM_SIMULTANEOUS_VDO_BLOCK_MAP_RESTORATION_READS = 1024,
|
|
|
|
/* The maximum number of entries in the slab summary */
|
|
MAXIMUM_VDO_SLAB_SUMMARY_ENTRIES = MAX_VDO_SLABS * MAX_VDO_PHYSICAL_ZONES,
|
|
|
|
/* The maximum number of total threads in a VDO thread configuration. */
|
|
MAXIMUM_VDO_THREADS = 100,
|
|
|
|
/* The maximum number of VIOs in the system at once */
|
|
MAXIMUM_VDO_USER_VIOS = 2048,
|
|
|
|
/* The only physical block size supported by VDO */
|
|
VDO_BLOCK_SIZE = 4096,
|
|
|
|
/* The number of sectors per block */
|
|
VDO_SECTORS_PER_BLOCK = (VDO_BLOCK_SIZE >> SECTOR_SHIFT),
|
|
|
|
/* The size of a sector that will not be torn */
|
|
VDO_SECTOR_SIZE = 512,
|
|
|
|
/* The physical block number reserved for storing the zero block */
|
|
VDO_ZERO_BLOCK = 0,
|
|
};
|
|
|
|
#endif /* VDO_CONSTANTS_H */
|