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Проблемы с ZFS


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Периодически один из разделов уходит куда-то покурить, при этом всё что к нему обращается - висит со статусом D в ps (т.е. даже не убивается). Куда копать? Лечить ребутом уже надоело.

zfs-stats:

(03:40  528)./zfs-stats -a

------------------------------------------------------------------------
ZFS Subsystem Report                            Wed May 30 15:41:02 2012
------------------------------------------------------------------------

System Information:

        Kernel Version:                         801000 (osreldate)
        Hardware Platform:                      amd64
        Processor Architecture:                 amd64

        ZFS Storage pool Version:               14
        ZFS Filesystem Version:                 3

FreeBSD 8.1-RELEASE #0: Wed Aug 11 13:27:15 UTC 2010 kol
 3:41PM  up 25 days, 12:14, 4 users, load averages: 7.45, 7.20, 7.02

------------------------------------------------------------------------

System Memory:

        9.58%   6.69    GiB Active,     6.57%   4.59    GiB Inact
        76.71%  53.58   GiB Wired,      0.04%   29.31   MiB Cache
        7.09%   4.95    GiB Free,       0.00%   552.00  KiB Gap

        Real Installed:                         80.00   GiB
        Real Available:                 89.98%  71.98   GiB
        Real Managed:                   97.02%  69.84   GiB

        Logical Total:                          80.00   GiB
        Logical Used:                   88.04%  70.43   GiB
        Logical Free:                   11.96%  9.57    GiB

Kernel Memory:                                  31.18   GiB
        Data:                           99.97%  31.18   GiB
        Text:                           0.03%   7.99    MiB

Kernel Memory Map:                              0
        Size:                           100.00% 0
        Free:                           100.00% 0

------------------------------------------------------------------------

ARC Summary: (HEALTHY)
        Memory Throttle Count:                  0

ARC Misc:
        Deleted:                                356.86m
        Recycle Misses:                         37.57m
        Mutex Misses:                           9.07m
        Evict Skips:                            9.07m

ARC Size:                               36.23%  38.77   GiB
        Target Size: (Adaptive)         36.23%  38.77   GiB
        Min Size (Hard Limit):          12.50%  13.38   GiB
        Max Size (High Water):          8:1     107.00  GiB

ARC Size Breakdown:
        Recently Used Cache Size:       57.47%  22.28   GiB
        Frequently Used Cache Size:     42.53%  16.49   GiB

ARC Hash Breakdown:
        Elements Max:                           6.25m
        Elements Current:               62.88%  3.93m
        Collisions:                             440.81m
        Chain Max:                              22
        Chains:                                 940.99k

------------------------------------------------------------------------

ARC Efficiency:                                 13.20b
        Cache Hit Ratio:                96.98%  12.80b
        Cache Miss Ratio:               3.02%   399.36m
        Actual Hit Ratio:               96.96%  12.80b

        Data Demand Efficiency:         98.48%  10.11b
        Data Prefetch Efficiency:       0.44%   172.37m

        CACHE HITS BY CACHE LIST:
          Most Recently Used:           4.56%   583.68m
          Most Frequently Used:         95.42%  12.22b
          Most Recently Used Ghost:     0.44%   56.54m
          Most Frequently Used Ghost:   0.46%   59.48m

        CACHE HITS BY DATA TYPE:
          Demand Data:                  77.74%  9.95b
          Prefetch Data:                0.01%   759.11k
          Demand Metadata:              22.18%  2.84b
          Prefetch Metadata:            0.07%   9.53m

        CACHE MISSES BY DATA TYPE:
          Demand Data:                  38.44%  153.52m
          Prefetch Data:                42.97%  171.61m
          Demand Metadata:              14.79%  59.05m
          Prefetch Metadata:            3.80%   15.17m

------------------------------------------------------------------------

L2ARC is disabled

------------------------------------------------------------------------


------------------------------------------------------------------------

VDEV cache is disabled

------------------------------------------------------------------------

ZFS Tunables (sysctl):
        kern.maxusers                           384
        vm.kmem_size                            115964116992
        vm.kmem_size_scale                      3
        vm.kmem_size_min                        0
        vm.kmem_size_max                        329853485875
        vfs.zfs.l2c_only_size                   0
        vfs.zfs.mfu_ghost_data_lsize            1288903168
        vfs.zfs.mfu_ghost_metadata_lsize        1994433024
        vfs.zfs.mfu_ghost_size                  3283336192
        vfs.zfs.mfu_data_lsize                  14824075776
        vfs.zfs.mfu_metadata_lsize              5634586624
        vfs.zfs.mfu_size                        24431357440
        vfs.zfs.mru_ghost_data_lsize            33550303744
        vfs.zfs.mru_ghost_metadata_lsize        4602653184
        vfs.zfs.mru_ghost_size                  38152956928
        vfs.zfs.mru_data_lsize                  723480064
        vfs.zfs.mru_metadata_lsize              475809792
        vfs.zfs.mru_size                        1844412928
        vfs.zfs.anon_data_lsize                 0
        vfs.zfs.anon_metadata_lsize             0
        vfs.zfs.anon_size                       65240064
        vfs.zfs.l2arc_norw                      1
        vfs.zfs.l2arc_feed_again                1
        vfs.zfs.l2arc_noprefetch                0
        vfs.zfs.l2arc_feed_min_ms               200
        vfs.zfs.l2arc_feed_secs                 1
        vfs.zfs.l2arc_headroom                  2
        vfs.zfs.l2arc_write_boost               8388608
        vfs.zfs.l2arc_write_max                 8388608
        vfs.zfs.arc_meta_limit                  28722593792
        vfs.zfs.arc_meta_used                   26074704344
        vfs.zfs.mdcomp_disable                  0
        vfs.zfs.arc_min                         14361296896
        vfs.zfs.arc_max                         114890375168
        vfs.zfs.zfetch.array_rd_sz              1048576
        vfs.zfs.zfetch.block_cap                256
        vfs.zfs.zfetch.min_sec_reap             2
        vfs.zfs.zfetch.max_streams              8
        vfs.zfs.prefetch_disable                1
        vfs.zfs.check_hostid                    1
        vfs.zfs.recover                         0
        vfs.zfs.txg.write_limit_override        0
        vfs.zfs.txg.synctime                    5
        vfs.zfs.txg.timeout                     30
        vfs.zfs.scrub_limit                     10
        vfs.zfs.vdev.cache.bshift               16
        vfs.zfs.vdev.cache.size                 10485760
        vfs.zfs.vdev.cache.max                  16384
        vfs.zfs.vdev.aggregation_limit          131072
        vfs.zfs.vdev.ramp_rate                  2
        vfs.zfs.vdev.time_shift                 6
        vfs.zfs.vdev.min_pending                4
        vfs.zfs.vdev.max_pending                35
        vfs.zfs.cache_flush_disable             0
        vfs.zfs.zil_disable                     0
        vfs.zfs.zio.use_uma                     0
        vfs.zfs.version.zpl                     3
        vfs.zfs.version.vdev_boot               1
        vfs.zfs.version.spa                     14
        vfs.zfs.version.dmu_backup_stream       1
        vfs.zfs.version.dmu_backup_header       2
        vfs.zfs.version.acl                     1
        vfs.zfs.debug                           0
        vfs.zfs.super_owner                     0

------------------------------------------------------------------------


кастани изю, он разрулит

GoNaX ★★★ ()

Сравни с моим

% zfs-stats -a

------------------------------------------------------------------------
ZFS Subsystem Report				Wed May 30 21:10:56 2012
------------------------------------------------------------------------

System Information:

	Kernel Version:				900506 (osreldate)
	Hardware Platform:			amd64
	Processor Architecture:			amd64

	ZFS Storage pool Version:		28
	ZFS Filesystem Version:			5

FreeBSD 9.0-STABLE #0: Tue May 29 20:50:50 VOLT 2012 root
21:10  up 42 mins, 2 users, load averages: 1,44 1,33 1,22

------------------------------------------------------------------------

System Memory:

	7.18%	531.62	MiB Active,	2.71%	200.56	MiB Inact
	28.84%	2.09	GiB Wired,	0.09%	6.31	MiB Cache
	61.17%	4.43	GiB Free,	0.02%	1.54	MiB Gap

	Real Installed:				8.00	GiB
	Real Available:			93.47%	7.48	GiB
	Real Managed:			96.76%	7.23	GiB

	Logical Total:				8.00	GiB
	Logical Used:			42.16%	3.37	GiB
	Logical Free:			57.84%	4.63	GiB

Kernel Memory:					1.22	GiB
	Data:				98.26%	1.20	GiB
	Text:				1.74%	21.83	MiB

Kernel Memory Map:				7.23	GiB
	Size:				12.62%	934.48	MiB
	Free:				87.38%	6.32	GiB

------------------------------------------------------------------------

ARC Summary: (HEALTHY)
	Memory Throttle Count:			0

ARC Misc:
	Deleted:				35
	Recycle Misses:				0
	Mutex Misses:				0
	Evict Skips:				1.50k

ARC Size:				19.52%	1.22	GiB
	Target Size: (Adaptive)		100.00%	6.23	GiB
	Min Size (Hard Limit):		12.50%	798.06	MiB
	Max Size (High Water):		8:1	6.23	GiB

ARC Size Breakdown:
	Recently Used Cache Size:	49.97%	3.12	GiB
	Frequently Used Cache Size:	50.03%	3.12	GiB

ARC Hash Breakdown:
	Elements Max:				79.70k
	Elements Current:		100.00%	79.70k
	Collisions:				39.91k
	Chain Max:				6
	Chains:					16.30k

------------------------------------------------------------------------

ARC Efficiency:					1.48m
	Cache Hit Ratio:		95.02%	1.40m
	Cache Miss Ratio:		4.98%	73.39k
	Actual Hit Ratio:		86.57%	1.28m

	Data Demand Efficiency:		98.82%	536.03k
	Data Prefetch Efficiency:	4.75%	1.35k

	CACHE HITS BY CACHE LIST:
	  Anonymously Used:		8.88%	124.52k
	  Most Recently Used:		21.14%	296.25k
	  Most Frequently Used:		69.97%	980.76k
	  Most Recently Used Ghost:	0.00%	18
	  Most Frequently Used Ghost:	0.01%	101

	CACHE HITS BY DATA TYPE:
	  Demand Data:			37.79%	529.68k
	  Prefetch Data:		0.00%	64
	  Demand Metadata:		53.32%	747.31k
	  Prefetch Metadata:		8.89%	124.59k

	CACHE MISSES BY DATA TYPE:
	  Demand Data:			8.65%	6.35k
	  Prefetch Data:		1.75%	1.28k
	  Demand Metadata:		58.42%	42.87k
	  Prefetch Metadata:		31.18%	22.88k

------------------------------------------------------------------------

L2ARC is disabled

------------------------------------------------------------------------

File-Level Prefetch: (HEALTHY)

DMU Efficiency:					5.82m
	Hit Ratio:			74.46%	4.33m
	Miss Ratio:			25.54%	1.49m

	Colinear:				1.49m
	  Hit Ratio:			0.01%	168
	  Miss Ratio:			99.99%	1.49m

	Stride:					4.32m
	  Hit Ratio:			100.00%	4.32m
	  Miss Ratio:			0.00%	59

DMU Misc:
	Reclaim:				1.49m
	  Successes:			0.24%	3.63k
	  Failures:			99.76%	1.48m

	Streams:				15.02k
	  +Resets:			0.10%	15
	  -Resets:			99.90%	15.01k
	  Bogus:				0

------------------------------------------------------------------------

VDEV cache is disabled

------------------------------------------------------------------------

ZFS Tunables (sysctl):
	kern.maxusers                           384
	vm.kmem_size                            7768338432
	vm.kmem_size_scale                      1
	vm.kmem_size_min                        0
	vm.kmem_size_max                        329853485875
	vfs.zfs.l2c_only_size                   0
	vfs.zfs.mfu_ghost_data_lsize            12834816
	vfs.zfs.mfu_ghost_metadata_lsize        4035072
	vfs.zfs.mfu_ghost_size                  16869888
	vfs.zfs.mfu_data_lsize                  343214592
	vfs.zfs.mfu_metadata_lsize              20354048
	vfs.zfs.mfu_size                        408862208
	vfs.zfs.mru_ghost_data_lsize            28566528
	vfs.zfs.mru_ghost_metadata_lsize        1697792
	vfs.zfs.mru_ghost_size                  30264320
	vfs.zfs.mru_data_lsize                  331001344
	vfs.zfs.mru_metadata_lsize              156844544
	vfs.zfs.mru_size                        598104064
	vfs.zfs.anon_data_lsize                 0
	vfs.zfs.anon_metadata_lsize             0
	vfs.zfs.anon_size                       781312
	vfs.zfs.l2arc_norw                      1
	vfs.zfs.l2arc_feed_again                1
	vfs.zfs.l2arc_noprefetch                1
	vfs.zfs.l2arc_feed_min_ms               200
	vfs.zfs.l2arc_feed_secs                 1
	vfs.zfs.l2arc_headroom                  2
	vfs.zfs.l2arc_write_boost               8388608
	vfs.zfs.l2arc_write_max                 8388608
	vfs.zfs.arc_meta_limit                  1673649152
	vfs.zfs.arc_meta_used                   632413968
	vfs.zfs.arc_min                         836824576
	vfs.zfs.arc_max                         6694596608
	vfs.zfs.dedup.prefetch                  1
	vfs.zfs.mdcomp_disable                  0
	vfs.zfs.write_limit_override            0
	vfs.zfs.write_limit_inflated            24086188032
	vfs.zfs.write_limit_max                 1003591168
	vfs.zfs.write_limit_min                 33554432
	vfs.zfs.write_limit_shift               3
	vfs.zfs.no_write_throttle               0
	vfs.zfs.zfetch.array_rd_sz              1048576
	vfs.zfs.zfetch.block_cap                256
	vfs.zfs.zfetch.min_sec_reap             2
	vfs.zfs.zfetch.max_streams              8
	vfs.zfs.prefetch_disable                0
	vfs.zfs.mg_alloc_failures               8
	vfs.zfs.check_hostid                    1
	vfs.zfs.recover                         0
	vfs.zfs.txg.synctime_ms                 1000
	vfs.zfs.txg.timeout                     5
	vfs.zfs.scrub_limit                     10
	vfs.zfs.vdev.cache.bshift               16
	vfs.zfs.vdev.cache.size                 0
	vfs.zfs.vdev.cache.max                  16384
	vfs.zfs.vdev.write_gap_limit            4096
	vfs.zfs.vdev.read_gap_limit             32768
	vfs.zfs.vdev.aggregation_limit          131072
	vfs.zfs.vdev.ramp_rate                  2
	vfs.zfs.vdev.time_shift                 6
	vfs.zfs.vdev.min_pending                4
	vfs.zfs.vdev.max_pending                10
	vfs.zfs.vdev.bio_flush_disable          0
	vfs.zfs.cache_flush_disable             0
	vfs.zfs.zil_replay_disable              0
	vfs.zfs.zio.use_uma                     0
	vfs.zfs.snapshot_list_prefetch          0
	vfs.zfs.version.zpl                     5
	vfs.zfs.version.spa                     28
	vfs.zfs.version.acl                     1
	vfs.zfs.debug                           0
	vfs.zfs.super_owner                     0

------------------------------------------------------------------------
iZEN ★★★★★ ()
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