*/
VDO_BIO_ROTATION_INTERVAL_LIMIT = 1024,
- /** The number of entries on a block map page */
+ /* 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 */
+ /* The origin of the flat portion of the block map */
VDO_BLOCK_MAP_FLAT_PAGE_ORIGIN = 1,
/*
*/
VDO_BLOCK_MAP_TREE_HEIGHT = 5,
- /** The default number of bio submission queues. */
+ /* 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. */
+ /* 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 */
+ /* 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 */
+ /* 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 */
+ /* The default size of each slab journal, in blocks */
DEFAULT_VDO_SLAB_JOURNAL_SIZE = 224,
- /** Unit test minimum */
+ /* Unit test minimum */
MINIMUM_VDO_SLAB_JOURNAL_BLOCKS = 2,
/*
*/
VDO_LOCK_MAP_CAPACITY = 10000,
- /** The maximum number of logical zones */
+ /* The maximum number of logical zones */
MAX_VDO_LOGICAL_ZONES = 60,
- /** The maximum number of physical zones */
+ /* The maximum number of physical zones */
MAX_VDO_PHYSICAL_ZONES = 16,
- /** The base-2 logarithm of the maximum blocks in one slab */
+ /* The base-2 logarithm of the maximum blocks in one slab */
MAX_VDO_SLAB_BITS = 23,
- /** The maximum number of slabs the slab depot supports */
+ /* The maximum number of slabs the slab depot supports */
MAX_VDO_SLABS = 8192,
/*
*/
MAXIMUM_SIMULTANEOUS_VDO_BLOCK_MAP_RESTORATION_READS = 1024,
- /** The maximum number of entries in the slab summary */
+ /* 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. */
+ /* 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 */
+ /* The maximum number of VIOs in the system at once */
MAXIMUM_VDO_USER_VIOS = 2048,
- /** The only physical block size supported by VDO */
+ /* The only physical block size supported by VDO */
VDO_BLOCK_SIZE = 4096,
- /** The number of sectors per block */
+ /* 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 */
+ /* The size of a sector that will not be torn */
VDO_SECTOR_SIZE = 512,
- /** The physical block number reserved for storing the zero block */
+ /* The physical block number reserved for storing the zero block */
VDO_ZERO_BLOCK = 0,
};
};
struct block_allocator_statistics {
- /** The total number of slabs from which blocks may be allocated */
+ /* The total number of slabs from which blocks may be allocated */
u64 slab_count;
- /** The total number of slabs from which blocks have ever been allocated */
+ /* The total number of slabs from which blocks have ever been allocated */
u64 slabs_opened;
- /** The number of times since loading that a slab has been re-opened */
+ /* The number of times since loading that a slab has been re-opened */
u64 slabs_reopened;
};
* reporting purposes
*/
struct commit_statistics {
- /** The total number of items on which processing has started */
+ /* The total number of items on which processing has started */
u64 started;
- /** The total number of items for which a write operation has been issued */
+ /* The total number of items for which a write operation has been issued */
u64 written;
- /** The total number of items for which a write operation has completed */
+ /* The total number of items for which a write operation has completed */
u64 committed;
};
/** Counters for events in the recovery journal */
struct recovery_journal_statistics {
- /** Number of times the on-disk journal was full */
+ /* Number of times the on-disk journal was full */
u64 disk_full;
- /** Number of times the recovery journal requested slab journal commits. */
+ /* Number of times the recovery journal requested slab journal commits. */
u64 slab_journal_commits_requested;
- /** Write/Commit totals for individual journal entries */
+ /* Write/Commit totals for individual journal entries */
struct commit_statistics entries;
- /** Write/Commit totals for journal blocks */
+ /* Write/Commit totals for journal blocks */
struct commit_statistics blocks;
};
/** The statistics for the compressed block packer. */
struct packer_statistics {
- /** Number of compressed data items written since startup */
+ /* Number of compressed data items written since startup */
u64 compressed_fragments_written;
- /** Number of blocks containing compressed items written since startup */
+ /* Number of blocks containing compressed items written since startup */
u64 compressed_blocks_written;
- /** Number of VIOs that are pending in the packer */
+ /* Number of VIOs that are pending in the packer */
u64 compressed_fragments_in_packer;
};
/** The statistics for the slab journals. */
struct slab_journal_statistics {
- /** Number of times the on-disk journal was full */
+ /* Number of times the on-disk journal was full */
u64 disk_full_count;
- /** Number of times an entry was added over the flush threshold */
+ /* Number of times an entry was added over the flush threshold */
u64 flush_count;
- /** Number of times an entry was added over the block threshold */
+ /* Number of times an entry was added over the block threshold */
u64 blocked_count;
- /** Number of times a tail block was written */
+ /* Number of times a tail block was written */
u64 blocks_written;
- /** Number of times we had to wait for the tail to write */
+ /* Number of times we had to wait for the tail to write */
u64 tail_busy_count;
};
/** The statistics for the slab summary. */
struct slab_summary_statistics {
- /** Number of blocks written */
+ /* Number of blocks written */
u64 blocks_written;
};
/** The statistics for the reference counts. */
struct ref_counts_statistics {
- /** Number of reference blocks written */
+ /* Number of reference blocks written */
u64 blocks_written;
};
/** The statistics for the block map. */
struct block_map_statistics {
- /** number of dirty (resident) pages */
+ /* number of dirty (resident) pages */
u32 dirty_pages;
- /** number of clean (resident) pages */
+ /* number of clean (resident) pages */
u32 clean_pages;
- /** number of free pages */
+ /* number of free pages */
u32 free_pages;
- /** number of pages in failed state */
+ /* number of pages in failed state */
u32 failed_pages;
- /** number of pages incoming */
+ /* number of pages incoming */
u32 incoming_pages;
- /** number of pages outgoing */
+ /* number of pages outgoing */
u32 outgoing_pages;
- /** how many times free page not avail */
+ /* how many times free page not avail */
u32 cache_pressure;
- /** number of get_vdo_page() calls for read */
+ /* number of get_vdo_page() calls for read */
u64 read_count;
- /** number of get_vdo_page() calls for write */
+ /* number of get_vdo_page() calls for write */
u64 write_count;
- /** number of times pages failed to read */
+ /* number of times pages failed to read */
u64 failed_reads;
- /** number of times pages failed to write */
+ /* number of times pages failed to write */
u64 failed_writes;
- /** number of gets that are reclaimed */
+ /* number of gets that are reclaimed */
u64 reclaimed;
- /** number of gets for outgoing pages */
+ /* number of gets for outgoing pages */
u64 read_outgoing;
- /** number of gets that were already there */
+ /* number of gets that were already there */
u64 found_in_cache;
- /** number of gets requiring discard */
+ /* number of gets requiring discard */
u64 discard_required;
- /** number of gets enqueued for their page */
+ /* number of gets enqueued for their page */
u64 wait_for_page;
- /** number of gets that have to fetch */
+ /* number of gets that have to fetch */
u64 fetch_required;
- /** number of page fetches */
+ /* number of page fetches */
u64 pages_loaded;
- /** number of page saves */
+ /* number of page saves */
u64 pages_saved;
- /** the number of flushes issued */
+ /* the number of flushes issued */
u64 flush_count;
};
/** The dedupe statistics from hash locks */
struct hash_lock_statistics {
- /** Number of times the UDS advice proved correct */
+ /* Number of times the UDS advice proved correct */
u64 dedupe_advice_valid;
- /** Number of times the UDS advice proved incorrect */
+ /* Number of times the UDS advice proved incorrect */
u64 dedupe_advice_stale;
- /** Number of writes with the same data as another in-flight write */
+ /* Number of writes with the same data as another in-flight write */
u64 concurrent_data_matches;
- /** Number of writes whose hash collided with an in-flight write */
+ /* Number of writes whose hash collided with an in-flight write */
u64 concurrent_hash_collisions;
- /** Current number of dedupe queries that are in flight */
+ /* Current number of dedupe queries that are in flight */
u32 curr_dedupe_queries;
};
/** Counts of error conditions in VDO. */
struct error_statistics {
- /** number of times VDO got an invalid dedupe advice PBN from UDS */
+ /* number of times VDO got an invalid dedupe advice PBN from UDS */
u64 invalid_advice_pbn_count;
- /** number of times a VIO completed with a VDO_NO_SPACE error */
+ /* number of times a VIO completed with a VDO_NO_SPACE error */
u64 no_space_error_count;
- /** number of times a VIO completed with a VDO_READ_ONLY error */
+ /* number of times a VIO completed with a VDO_READ_ONLY error */
u64 read_only_error_count;
};
struct bio_stats {
- /** Number of REQ_OP_READ bios */
+ /* Number of REQ_OP_READ bios */
u64 read;
- /** Number of REQ_OP_WRITE bios with data */
+ /* Number of REQ_OP_WRITE bios with data */
u64 write;
- /** Number of bios tagged with REQ_PREFLUSH and containing no data */
+ /* Number of bios tagged with REQ_PREFLUSH and containing no data */
u64 empty_flush;
- /** Number of REQ_OP_DISCARD bios */
+ /* Number of REQ_OP_DISCARD bios */
u64 discard;
- /** Number of bios tagged with REQ_PREFLUSH */
+ /* Number of bios tagged with REQ_PREFLUSH */
u64 flush;
- /** Number of bios tagged with REQ_FUA */
+ /* Number of bios tagged with REQ_FUA */
u64 fua;
};
struct memory_usage {
- /** Tracked bytes currently allocated. */
+ /* Tracked bytes currently allocated. */
u64 bytes_used;
- /** Maximum tracked bytes allocated. */
+ /* Maximum tracked bytes allocated. */
u64 peak_bytes_used;
};
/** UDS index statistics */
struct index_statistics {
- /** Number of records stored in the index */
+ /* Number of records stored in the index */
u64 entries_indexed;
- /** Number of post calls that found an existing entry */
+ /* Number of post calls that found an existing entry */
u64 posts_found;
- /** Number of post calls that added a new entry */
+ /* Number of post calls that added a new entry */
u64 posts_not_found;
- /** Number of query calls that found an existing entry */
+ /* Number of query calls that found an existing entry */
u64 queries_found;
- /** Number of query calls that added a new entry */
+ /* Number of query calls that added a new entry */
u64 queries_not_found;
- /** Number of update calls that found an existing entry */
+ /* Number of update calls that found an existing entry */
u64 updates_found;
- /** Number of update calls that added a new entry */
+ /* Number of update calls that added a new entry */
u64 updates_not_found;
- /** Number of entries discarded */
+ /* Number of entries discarded */
u64 entries_discarded;
};
/** The statistics of the vdo service. */
struct vdo_statistics {
u32 version;
- /** Number of blocks used for data */
+ /* Number of blocks used for data */
u64 data_blocks_used;
- /** Number of blocks used for VDO metadata */
+ /* Number of blocks used for VDO metadata */
u64 overhead_blocks_used;
- /** Number of logical blocks that are currently mapped to physical blocks */
+ /* Number of logical blocks that are currently mapped to physical blocks */
u64 logical_blocks_used;
- /** number of physical blocks */
+ /* number of physical blocks */
block_count_t physical_blocks;
- /** number of logical blocks */
+ /* number of logical blocks */
block_count_t logical_blocks;
- /** Size of the block map page cache, in bytes */
+ /* Size of the block map page cache, in bytes */
u64 block_map_cache_size;
- /** The physical block size */
+ /* The physical block size */
u64 block_size;
- /** Number of times the VDO has successfully recovered */
+ /* Number of times the VDO has successfully recovered */
u64 complete_recoveries;
- /** Number of times the VDO has recovered from read-only mode */
+ /* Number of times the VDO has recovered from read-only mode */
u64 read_only_recoveries;
- /** String describing the operating mode of the VDO */
+ /* String describing the operating mode of the VDO */
char mode[15];
- /** Whether the VDO is in recovery mode */
+ /* Whether the VDO is in recovery mode */
bool in_recovery_mode;
- /** What percentage of recovery mode work has been completed */
+ /* What percentage of recovery mode work has been completed */
u8 recovery_percentage;
- /** The statistics for the compressed block packer */
+ /* The statistics for the compressed block packer */
struct packer_statistics packer;
- /** Counters for events in the block allocator */
+ /* Counters for events in the block allocator */
struct block_allocator_statistics allocator;
- /** Counters for events in the recovery journal */
+ /* Counters for events in the recovery journal */
struct recovery_journal_statistics journal;
- /** The statistics for the slab journals */
+ /* The statistics for the slab journals */
struct slab_journal_statistics slab_journal;
- /** The statistics for the slab summary */
+ /* The statistics for the slab summary */
struct slab_summary_statistics slab_summary;
- /** The statistics for the reference counts */
+ /* The statistics for the reference counts */
struct ref_counts_statistics ref_counts;
- /** The statistics for the block map */
+ /* The statistics for the block map */
struct block_map_statistics block_map;
- /** The dedupe statistics from hash locks */
+ /* The dedupe statistics from hash locks */
struct hash_lock_statistics hash_lock;
- /** Counts of error conditions */
+ /* Counts of error conditions */
struct error_statistics errors;
- /** The VDO instance */
+ /* The VDO instance */
u32 instance;
- /** Current number of active VIOs */
+ /* Current number of active VIOs */
u32 current_vios_in_progress;
- /** Maximum number of active VIOs */
+ /* Maximum number of active VIOs */
u32 max_vios;
- /** Number of times the UDS index was too slow in responding */
+ /* Number of times the UDS index was too slow in responding */
u64 dedupe_advice_timeouts;
- /** Number of flush requests submitted to the storage device */
+ /* Number of flush requests submitted to the storage device */
u64 flush_out;
- /** Logical block size */
+ /* Logical block size */
u64 logical_block_size;
- /** Bios submitted into VDO from above */
+ /* Bios submitted into VDO from above */
struct bio_stats bios_in;
struct bio_stats bios_in_partial;
- /** Bios submitted onward for user data */
+ /* Bios submitted onward for user data */
struct bio_stats bios_out;
- /** Bios submitted onward for metadata */
+ /* Bios submitted onward for metadata */
struct bio_stats bios_meta;
struct bio_stats bios_journal;
struct bio_stats bios_page_cache;
struct bio_stats bios_page_cache_completed;
struct bio_stats bios_acknowledged;
struct bio_stats bios_acknowledged_partial;
- /** Current number of bios in progress */
+ /* Current number of bios in progress */
struct bio_stats bios_in_progress;
- /** Memory usage stats. */
+ /* Memory usage stats. */
struct memory_usage memory_usage;
- /** The statistics for the UDS index */
+ /* The statistics for the UDS index */
struct index_statistics index;
};
projects / thirdparty / linux.git / commitdiff
