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193a37cb24
Update the zfs module to collect statistics on average latencies, queue sizes,
and keep an internal histogram of all IO latencies. Along with this, update
"zpool iostat" with some new options to print out the stats:
-l: Include average IO latencies stats:
total_wait disk_wait syncq_wait asyncq_wait scrub
read write read write read write read write wait
----- ----- ----- ----- ----- ----- ----- ----- -----
- 41ms - 2ms - 46ms - 4ms -
- 5ms - 1ms - 1us - 4ms -
- 5ms - 1ms - 1us - 4ms -
- - - - - - - - -
- 49ms - 2ms - 47ms - - -
- - - - - - - - -
- 2ms - 1ms - - - 1ms -
----- ----- ----- ----- ----- ----- ----- ----- -----
1ms 1ms 1ms 413us 16us 25us - 5ms -
1ms 1ms 1ms 413us 16us 25us - 5ms -
2ms 1ms 2ms 412us 26us 25us - 5ms -
- 1ms - 413us - 25us - 5ms -
- 1ms - 460us - 29us - 5ms -
196us 1ms 196us 370us 7us 23us - 5ms -
----- ----- ----- ----- ----- ----- ----- ----- -----
-w: Print out latency histograms:
sdb total disk sync_queue async_queue
latency read write read write read write read write scrub
------- ------ ------ ------ ------ ------ ------ ------ ------ ------
1ns 0 0 0 0 0 0 0 0 0
...
33us 0 0 0 0 0 0 0 0 0
66us 0 0 107 2486 2 788 12 12 0
131us 2 797 359 4499 10 558 184 184 6
262us 22 801 264 1563 10 286 287 287 24
524us 87 575 71 52086 15 1063 136 136 92
1ms 152 1190 5 41292 4 1693 252 252 141
2ms 245 2018 0 50007 0 2322 371 371 220
4ms 189 7455 22 162957 0 3912 6726 6726 199
8ms 108 9461 0 102320 0 5775 2526 2526 86
17ms 23 11287 0 37142 0 8043 1813 1813 19
34ms 0 14725 0 24015 0 11732 3071 3071 0
67ms 0 23597 0 7914 0 18113 5025 5025 0
134ms 0 33798 0 254 0 25755 7326 7326 0
268ms 0 51780 0 12 0 41593 10002 10002 0
537ms 0 77808 0 0 0 64255 13120 13120 0
1s 0 105281 0 0 0 83805 20841 20841 0
2s 0 88248 0 0 0 73772 14006 14006 0
4s 0 47266 0 0 0 29783 17176 17176 0
9s 0 10460 0 0 0 4130 6295 6295 0
17s 0 0 0 0 0 0 0 0 0
34s 0 0 0 0 0 0 0 0 0
69s 0 0 0 0 0 0 0 0 0
137s 0 0 0 0 0 0 0 0 0
-------------------------------------------------------------------------------
-h: Help
-H: Scripted mode. Do not display headers, and separate fields by a single
tab instead of arbitrary space.
-q: Include current number of entries in sync & async read/write queues,
and scrub queue:
syncq_read syncq_write asyncq_read asyncq_write scrubq_read
pend activ pend activ pend activ pend activ pend activ
----- ----- ----- ----- ----- ----- ----- ----- ----- -----
0 0 0 0 78 29 0 0 0 0
0 0 0 0 78 29 0 0 0 0
0 0 0 0 0 0 0 0 0 0
- - - - - - - - - -
0 0 0 0 0 0 0 0 0 0
- - - - - - - - - -
0 0 0 0 0 0 0 0 0 0
----- ----- ----- ----- ----- ----- ----- ----- ----- -----
0 0 227 394 0 19 0 0 0 0
0 0 227 394 0 19 0 0 0 0
0 0 108 98 0 19 0 0 0 0
0 0 19 98 0 0 0 0 0 0
0 0 78 98 0 0 0 0 0 0
0 0 19 88 0 0 0 0 0 0
----- ----- ----- ----- ----- ----- ----- ----- ----- -----
-p: Display numbers in parseable (exact) values.
Also, update iostat syntax to allow the user to specify specific vdevs
to show statistics for. The three options for choosing pools/vdevs are:
Display a list of pools:
zpool iostat ... [pool ...]
Display a list of vdevs from a specific pool:
zpool iostat ... [pool vdev ...]
Display a list of vdevs from any pools:
zpool iostat ... [vdev ...]
Lastly, allow zpool command "interval" value to be floating point:
zpool iostat -v 0.5
Signed-off-by: Tony Hutter <hutter2@llnl.gov
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4433
174 lines
6.2 KiB
C
174 lines
6.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_VDEV_H
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#define _SYS_VDEV_H
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#include <sys/spa.h>
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#include <sys/zio.h>
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#include <sys/dmu.h>
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#include <sys/space_map.h>
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#include <sys/fs/zfs.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum vdev_dtl_type {
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DTL_MISSING, /* 0% replication: no copies of the data */
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DTL_PARTIAL, /* less than 100% replication: some copies missing */
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DTL_SCRUB, /* unable to fully repair during scrub/resilver */
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DTL_OUTAGE, /* temporarily missing (used to attempt detach) */
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DTL_TYPES
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} vdev_dtl_type_t;
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extern int zfs_nocacheflush;
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extern int vdev_open(vdev_t *);
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extern void vdev_open_children(vdev_t *);
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extern int vdev_validate(vdev_t *, boolean_t);
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extern void vdev_close(vdev_t *);
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extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
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extern void vdev_reopen(vdev_t *);
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extern int vdev_validate_aux(vdev_t *vd);
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extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio);
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extern boolean_t vdev_is_bootable(vdev_t *vd);
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extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
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extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
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extern int vdev_count_leaves(spa_t *spa);
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extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
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uint64_t txg, uint64_t size);
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extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d,
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uint64_t txg, uint64_t size);
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extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d);
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extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
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int scrub_done);
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extern boolean_t vdev_dtl_required(vdev_t *vd);
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extern boolean_t vdev_resilver_needed(vdev_t *vd,
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uint64_t *minp, uint64_t *maxp);
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extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj,
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dmu_tx_t *tx);
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extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx);
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extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx);
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extern void vdev_hold(vdev_t *);
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extern void vdev_rele(vdev_t *);
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extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
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extern void vdev_metaslab_fini(vdev_t *vd);
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extern void vdev_metaslab_set_size(vdev_t *);
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extern void vdev_expand(vdev_t *vd, uint64_t txg);
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extern void vdev_split(vdev_t *vd);
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extern void vdev_deadman(vdev_t *vd);
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extern void vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx);
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extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
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extern void vdev_clear_stats(vdev_t *vd);
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extern void vdev_stat_update(zio_t *zio, uint64_t psize);
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extern void vdev_scan_stat_init(vdev_t *vd);
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extern void vdev_propagate_state(vdev_t *vd);
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extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
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vdev_aux_t aux);
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extern void vdev_space_update(vdev_t *vd,
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int64_t alloc_delta, int64_t defer_delta, int64_t space_delta);
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extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
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extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux);
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extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux);
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extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
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vdev_state_t *);
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extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
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extern void vdev_clear(spa_t *spa, vdev_t *vd);
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extern boolean_t vdev_is_dead(vdev_t *vd);
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extern boolean_t vdev_readable(vdev_t *vd);
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extern boolean_t vdev_writeable(vdev_t *vd);
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extern boolean_t vdev_allocatable(vdev_t *vd);
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extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio);
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extern void vdev_cache_init(vdev_t *vd);
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extern void vdev_cache_fini(vdev_t *vd);
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extern boolean_t vdev_cache_read(zio_t *zio);
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extern void vdev_cache_write(zio_t *zio);
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extern void vdev_cache_purge(vdev_t *vd);
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extern void vdev_queue_init(vdev_t *vd);
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extern void vdev_queue_fini(vdev_t *vd);
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extern zio_t *vdev_queue_io(zio_t *zio);
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extern void vdev_queue_io_done(zio_t *zio);
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extern int vdev_queue_length(vdev_t *vd);
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extern uint64_t vdev_queue_lastoffset(vdev_t *vd);
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extern void vdev_queue_register_lastoffset(vdev_t *vd, zio_t *zio);
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extern void vdev_config_dirty(vdev_t *vd);
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extern void vdev_config_clean(vdev_t *vd);
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extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg);
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extern void vdev_state_dirty(vdev_t *vd);
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extern void vdev_state_clean(vdev_t *vd);
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typedef enum vdev_config_flag {
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VDEV_CONFIG_SPARE = 1 << 0,
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VDEV_CONFIG_L2CACHE = 1 << 1,
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VDEV_CONFIG_REMOVING = 1 << 2,
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VDEV_CONFIG_MOS = 1 << 3
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} vdev_config_flag_t;
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extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config);
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extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
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boolean_t getstats, vdev_config_flag_t flags);
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/*
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* Label routines
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*/
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struct uberblock;
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extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
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extern int vdev_label_number(uint64_t psise, uint64_t offset);
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extern nvlist_t *vdev_label_read_config(vdev_t *vd, uint64_t txg);
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extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **);
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extern void vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv);
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typedef enum {
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VDEV_LABEL_CREATE, /* create/add a new device */
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VDEV_LABEL_REPLACE, /* replace an existing device */
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VDEV_LABEL_SPARE, /* add a new hot spare */
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VDEV_LABEL_REMOVE, /* remove an existing device */
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VDEV_LABEL_L2CACHE, /* add an L2ARC cache device */
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VDEV_LABEL_SPLIT /* generating new label for split-off dev */
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} vdev_labeltype_t;
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extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_VDEV_H */
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