diff options
| author | Don Brady <[email protected]> | 2017-01-12 12:52:56 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2017-01-12 11:52:56 -0800 |
| commit | 4e21fd060a567a9c8a1bd0e640985412181c1e33 (patch) | |
| tree | 622424c5f98ac43cd93d8af221775a77df161856 /include/sys/metaslab.h | |
| parent | 5727b00e06a4208a7040489d582f13bc3c183384 (diff) | |
OpenZFS 7303 - dynamic metaslab selection
This change introduces a new weighting algorithm to improve
metaslab selection. The new weighting algorithm relies on the
SPACEMAP_HISTOGRAM feature. As a result, the metaslab weight
now encodes the type of weighting algorithm used (size-based
vs segment-based).
Porting Notes: The metaslab allocation tracing code is conditionally
removed on linux (dependent on mdb debugger).
Authored by: George Wilson <[email protected]>
Reviewed by: Alex Reece <[email protected]>
Reviewed by: Chris Siden <[email protected]>
Reviewed by: Dan Kimmel <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: Paul Dagnelie <[email protected]>
Reviewed by: Pavel Zakharov [email protected]
Reviewed by: Prakash Surya <[email protected]>
Reviewed by: Don Brady <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Ported-by: Don Brady <[email protected]>
OpenZFS-issue: https://www.illumos.org/issues/7303
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d5190931bd
Closes #5404
Diffstat (limited to 'include/sys/metaslab.h')
| -rw-r--r-- | include/sys/metaslab.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/sys/metaslab.h b/include/sys/metaslab.h index 408f6d333..be271c702 100644 --- a/include/sys/metaslab.h +++ b/include/sys/metaslab.h @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2011, 2015 by Delphix. All rights reserved. + * Copyright (c) 2011, 2016 by Delphix. All rights reserved. */ #ifndef _SYS_METASLAB_H @@ -36,10 +36,12 @@ extern "C" { #endif + typedef struct metaslab_ops { - uint64_t (*msop_alloc)(metaslab_t *msp, uint64_t size); + uint64_t (*msop_alloc)(metaslab_t *, uint64_t); } metaslab_ops_t; + extern metaslab_ops_t *zfs_metaslab_ops; int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, @@ -64,13 +66,18 @@ uint64_t metaslab_block_maxsize(metaslab_t *); #define METASLAB_FASTWRITE 0x20 int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t, - blkptr_t *, int, uint64_t, blkptr_t *, int, zio_t *); + blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *); void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); void metaslab_check_free(spa_t *, const blkptr_t *); void metaslab_fastwrite_mark(spa_t *, const blkptr_t *); void metaslab_fastwrite_unmark(spa_t *, const blkptr_t *); +void metaslab_alloc_trace_init(void); +void metaslab_alloc_trace_fini(void); +void metaslab_trace_init(zio_alloc_list_t *); +void metaslab_trace_fini(zio_alloc_list_t *); + metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *); void metaslab_class_destroy(metaslab_class_t *); int metaslab_class_validate(metaslab_class_t *); |