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Don Brady 4e21fd060a 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 <george.wilson@delphix.com>
Reviewed by: Alex Reece <alex@delphix.com>
Reviewed by: Chris Siden <christopher.siden@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com>
Reviewed by: Pavel Zakharov pavel.zakharov@delphix.com
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Don Brady <don.brady@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Don Brady <don.brady@intel.com>

OpenZFS-issue: https://www.illumos.org/issues/7303
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d5190931bd
Closes #5404
 		2017-01-12 11:52:56 -08:00
..
crypto OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
fm Turn on/off enclosure slot fault LED even when disk isn't present 2016-10-24 10:45:59 -07:00
fs Fix spelling 2017-01-03 11:31:18 -06:00
sysevent Bring over illumos ZFS FMA logic -- phase 1 2016-09-01 11:39:45 -07:00
Makefile.am DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
abd.h ABD optimized page allocation code 2016-11-29 14:34:33 -08:00
arc.h DLPX-44733 combine arc_buf_alloc_impl() with arc_buf_clone() 2016-09-13 09:59:13 -07:00
arc_impl.h Fix spelling 2017-01-03 11:31:18 -06:00
avl.h Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
avl_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
blkptr.h Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
bplist.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
bpobj.h Illumos 5810 - zdb should print details of bpobj 2015-05-11 15:10:24 -07:00
bptree.h Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
bqueue.h Illumos 5960, 5925 2016-01-08 15:08:19 -08:00
dbuf.h fix: Shift exponent too large 2016-09-29 15:55:41 -07:00
ddt.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
dmu.h Fix coverity defects: CID 147472 2016-10-20 11:24:01 -07:00
dmu_impl.h OpenZFS 7230 - add assertions to dmu_send_impl() to verify that stream includes BEGIN and END records 2016-09-22 16:01:19 -07:00
dmu_objset.h Export symbol dmu_objset_userobjspace_upgradable 2016-11-09 13:51:12 -08:00
dmu_send.h DLPX-40252 integrate EP-476 compressed zfs send/receive 2016-09-13 09:58:58 -07:00
dmu_traverse.h OpenZFS 2605, 6980, 6902 2016-06-28 13:47:02 -07:00
dmu_tx.h dmu_tx kstat cleanup 2014-03-04 12:22:24 -08:00
dmu_zfetch.h OpenZFS 6322 - ZFS indirect block predictive prefetch 2016-08-30 14:26:55 -07:00
dnode.h Fix spelling 2017-01-03 11:31:18 -06:00
dsl_bookmark.h Illumos 4368, 4369. 2014-07-29 10:55:29 -07:00
dsl_dataset.h OpenZFS 7259 - DS_FIELD_LARGE_BLOCKS is unused 2017-01-03 12:03:05 -06:00
dsl_deadlist.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
dsl_deleg.h Add support for user/group dnode accounting & quota 2016-10-07 09:45:13 -07:00
dsl_destroy.h Illumos #3888 2013-11-04 11:18:14 -08:00
dsl_dir.h OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
dsl_pool.h Illumos 5981 - Deadlock in dmu_objset_find_dp 2015-07-06 09:31:35 -07:00
dsl_prop.h Illumos 6171 - dsl_prop_unregister() slows down dataset eviction. 2016-01-12 10:53:12 -08:00
dsl_scan.h Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
dsl_synctask.h Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_userhold.h Illumos #3740 2013-11-04 11:17:48 -08:00
edonr.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
efi_partition.h Fix spelling 2017-01-03 11:31:18 -06:00
metaslab.h OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
metaslab_impl.h OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
mntent.h Make zfs mount according to relatime config in dataset 2016-04-05 18:55:59 -07:00
multilist.h Illumos 5497 - lock contention on arcs_mtx 2015-06-11 10:27:25 -07:00
nvpair.h Replace __va_list with va_list 2014-08-13 10:35:00 -07:00
nvpair_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
pathname.h Add pn_alloc()/pn_free() functions 2016-04-21 09:49:25 -07:00
policy.h Add `zfs allow` and `zfs unallow` support 2016-06-07 09:16:52 -07:00
range_tree.h Illumos #4374 2014-07-30 09:20:35 -07:00
refcount.h OpenZFS 7090 - zfs should throttle allocations 2016-10-13 17:59:18 -07:00
rrwlock.h Illumos 5008 - lock contention (rrw_exit) while running a read only load 2015-07-06 09:34:13 -07:00
sa.h Remove unused sa_update_from_cb() 2016-12-01 16:39:06 -07:00
sa_impl.h Implement large_dnode pool feature 2016-06-24 13:13:21 -07:00
sdt.h Swap DTRACE_PROBE* with Linux tracepoints 2014-11-17 11:13:55 -08:00
sha2.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
skein.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
spa.h Refactor txg history kstat 2016-12-02 16:57:49 -07:00
spa_boot.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
spa_checksum.h Implementation of AVX2 optimized Fletcher-4 2016-06-02 14:30:51 -07:00
spa_impl.h Fix spelling 2017-01-03 11:31:18 -06:00
space_map.h Illumos 5164-5165 - space map fixes 2014-10-23 15:30:32 -07:00
space_reftree.h Illumos #4101, #4102, #4103, #4105, #4106 2014-07-22 09:39:16 -07:00
sysevent.h OpenZFS 5997 - FRU field not set during pool creation and never updated 2016-08-12 13:06:48 -07:00
trace.h Remove duplicate typedefs from trace.h 2015-01-06 16:53:24 -08:00
trace_acl.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_arc.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_common.h OpenZFS 6531 - Provide mechanism to artificially limit disk performance 2016-05-26 10:11:51 -07:00
trace_dbgmsg.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_dbuf.h OpenZFS 6950 - ARC should cache compressed data 2016-09-13 09:58:33 -07:00
trace_dmu.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_dnode.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_multilist.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_txg.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_zil.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_zio.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
trace_zrlock.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
txg.h Illumos 4753 - increase number of outstanding async writes when sync task is waiting 2014-09-23 13:50:55 -07:00
txg_impl.h Fix spelling 2017-01-03 11:31:18 -06:00
u8_textprep.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
u8_textprep_data.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
uberblock.h Illumos 5347 - idle pool may run itself out of space 2015-07-14 10:35:21 -07:00
uberblock_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
uio_impl.h Add basic uio support 2011-02-10 09:21:43 -08:00
unique.h Illumos #3742 2013-11-04 10:55:25 -08:00
uuid.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
vdev.h Add -lhHpw options to "zpool iostat" for avg latency, histograms, & queues 2016-05-12 12:36:32 -07:00
vdev_disk.h Remove custom root pool import code 2016-08-11 11:19:34 -07:00
vdev_file.h Use a dedicated taskq for vdev_file 2016-12-21 10:47:15 -08:00
vdev_impl.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
vdev_raidz.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
vdev_raidz_impl.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
xvattr.h Fix spelling 2017-01-03 11:31:18 -06:00
zap.h OpenZFS 7004 - dmu_tx_hold_zap() does dnode_hold() 7x on same object 2016-08-19 12:48:03 -07:00
zap_impl.h OpenZFS 7003 - zap_lockdir() should tag hold 2016-08-19 12:35:23 -07:00
zap_leaf.h Illumos 5056 - ZFS deadlock on db_mtx and dn_holds 2015-04-28 16:25:34 -07:00
zfeature.h Revert "zhack: Add 'feature disable' command" 2016-05-17 11:52:07 -07:00
zfs_acl.h Illumos #3742 2013-11-04 10:55:25 -08:00
zfs_context.h OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
zfs_ctldir.h Delete unused zfsctl_snapdir_inactive declaration 2016-08-30 14:33:40 -07:00
zfs_debug.h OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
zfs_delay.h cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00
zfs_dir.h Add support for O_TMPFILE 2016-11-04 10:46:40 -07:00
zfs_fuid.h Prototype/structure update for Linux 2011-02-10 09:27:21 -08:00
zfs_ioctl.h DLPX-40252 integrate EP-476 compressed zfs send/receive 2016-09-13 09:58:58 -07:00
zfs_onexit.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_ratelimit.h Multipath autoreplace, control enclosure LEDs, event rate limiting 2016-10-19 12:55:59 -07:00
zfs_rlock.h Use zfs range locks in ztest 2016-05-17 10:40:30 -07:00
zfs_sa.h Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zfs_stat.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_vfsops.h Add support for user/group dnode accounting & quota 2016-10-07 09:45:13 -07:00
zfs_vnops.h Add support for O_TMPFILE 2016-11-04 10:46:40 -07:00
zfs_znode.h Fix unlinked file cannot do xattr operations 2016-11-04 10:46:40 -07:00
zil.h Fix a typo in ZIL write handling comment 2016-08-12 10:30:16 -07:00
zil_impl.h Illumos 5027 - zfs large block support 2015-05-11 12:23:16 -07:00
zio.h OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
zio_checksum.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zio_compress.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zio_impl.h Compile zio.h and zio_impl.h mutual include 2016-12-01 16:36:25 -07:00
zio_priority.h Add -lhHpw options to "zpool iostat" for avg latency, histograms, & queues 2016-05-12 12:36:32 -07:00
zpl.h Use cstyle -cpP in `make cstyle` check 2016-12-12 10:46:26 -08:00
zrlock.h OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zvol.h Fix 32-bit maximum volume size 2016-11-02 12:14:45 -07:00