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