Проблема заключается в том, что в вирт. машине, фризится даже vi, на устойчиво периодической основе.
В тред приглашаю: King_Carlo, и других, умных и не равнодушных людей.
Пользуюсь jbod на adaptec 2405. Диски WD3000HLFS-0.
На одном из узлов, сабж:
root@kvm4:~# apt-cache show zfsutils
....
Version: 0.6.4.1-1~trusty
Ввод/вывод, статистика:
root@kvm4:~# iostat -mx
Linux 3.13.0-49-generic (kvm4) 15.05.2015 _x86_64_ (8 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
0,39 0,00 0,18 3,31 0,00 96,12
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
....
sdb 0,20 0,00 0,96 30,91 0,10 1,61 109,86 0,22 6,95 11,07 6,82 3,29 10,47
sdc 0,20 0,00 0,90 30,86 0,09 1,61 109,76 0,21 6,62 10,76 6,50 3,09 9,80
dmesg:
[12973.186314] INFO: task txg_sync:3877 blocked for more than 120 seconds.
[12973.186334] Tainted: P OX 3.13.0-49-generic #83-Ubuntu
[12973.186348] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[12973.186373] txg_sync D ffff88041fbd34c0 0 3877 2 0x00000000
[12973.186376] ffff880400ca1bd0 0000000000000046 ffff8804003c4800 ffff880400ca1fd8
[12973.186378] 00000000000134c0 00000000000134c0 ffff8804003c4800 ffff88041fbd3d58
[12973.186379] ffff8802e57a4790 ffff8802e57a47d0 ffff8802e57a47b8 0000000000000001
[12973.186381] Call Trace:
[12973.186387] [<ffffffff8172626d>] io_schedule+0x9d/0x140
[12973.186395] [<ffffffffa033aaaf>] cv_wait_common+0x9f/0x120 [spl]
[12973.186399] [<ffffffff810ab120>] ? prepare_to_wait_event+0x100/0x100
[12973.186402] [<ffffffffa033ab88>] __cv_wait_io+0x18/0x20 [spl]
[12973.186426] [<ffffffffa05ae193>] zio_wait+0x123/0x210 [zfs]
[12973.186439] [<ffffffffa053ac41>] dsl_pool_sync+0xb1/0x460 [zfs]
SMART второго диска ( # arcconf getsmartstats 1 tabular ) :
PhysicalDriveSmartStats
channel ........................................ 0
id ............................................. 3
nonSpinning .................................... false
isDescriptionAvailable ......................... true
Attribute
id ............................................. 0x01
name ........................................... Read Error Rate
normalizedCurrent .............................. 197
normalizedWorst ................................ 192
rawValue ....................................... 357899
Attribute
id ............................................. 0x03
name ........................................... Spin-Up Time in millisecs
normalizedCurrent .............................. 196
normalizedWorst ................................ 196
rawValue ....................................... 3191
Attribute
id ............................................. 0x04
name ........................................... Start/Stop Count
normalizedCurrent .............................. 100
normalizedWorst ................................ 100
rawValue ....................................... 34
Attribute
id ............................................. 0x05
name ........................................... Reallocated Sectors Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0x07
name ........................................... Seek Error Rate
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0x09
name ........................................... Power-On Hours
normalizedCurrent .............................. 42
normalizedWorst ................................ 42
rawValue ....................................... 42517
Attribute
id ............................................. 0x0A
name ........................................... Spin Retry Count
normalizedCurrent .............................. 100
normalizedWorst ................................ 253
rawValue ....................................... 0
Attribute
id ............................................. 0x0B
name ........................................... Recalibration Retries
normalizedCurrent .............................. 100
normalizedWorst ................................ 253
rawValue ....................................... 0
Attribute
id ............................................. 0x0C
name ........................................... Power Cycle Count
normalizedCurrent .............................. 100
normalizedWorst ................................ 100
rawValue ....................................... 34
Attribute
id ............................................. 0xC0
name ........................................... Power-off Retract Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 11
Attribute
id ............................................. 0xC1
name ........................................... Load/Unload Cycle Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 34
Attribute
id ............................................. 0xC2
name ........................................... Current Internal Temperature
normalizedCurrent .............................. 107
normalizedWorst ................................ 101
rawValue ....................................... 40
Attribute
id ............................................. 0xC4
name ........................................... Reallocation Event Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0xC5
name ........................................... Current Pending Sector Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0xC6
name ........................................... Uncorrectable Sector Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0xC8
name ........................................... Write Error Rate
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
SMART первого диска:
PhysicalDriveSmartStats
channel ........................................ 0
id ............................................. 2
nonSpinning .................................... false
isDescriptionAvailable ......................... true
Attribute
id ............................................. 0x01
name ........................................... Read Error Rate
normalizedCurrent .............................. 187
normalizedWorst ................................ 164
rawValue ....................................... 1536688
Attribute
id ............................................. 0x03
name ........................................... Spin-Up Time in millisecs
normalizedCurrent .............................. 196
normalizedWorst ................................ 194
rawValue ....................................... 3200
Attribute
id ............................................. 0x04
name ........................................... Start/Stop Count
normalizedCurrent .............................. 100
normalizedWorst ................................ 100
rawValue ....................................... 29
Attribute
id ............................................. 0x05
name ........................................... Reallocated Sectors Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0x07
name ........................................... Seek Error Rate
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0x09
name ........................................... Power-On Hours
normalizedCurrent .............................. 42
normalizedWorst ................................ 42
rawValue ....................................... 42508
Attribute
id ............................................. 0x0A
name ........................................... Spin Retry Count
normalizedCurrent .............................. 100
normalizedWorst ................................ 253
rawValue ....................................... 0
Attribute
id ............................................. 0x0B
name ........................................... Recalibration Retries
normalizedCurrent .............................. 100
normalizedWorst ................................ 253
rawValue ....................................... 0
Attribute
id ............................................. 0x0C
name ........................................... Power Cycle Count
normalizedCurrent .............................. 100
normalizedWorst ................................ 100
rawValue ....................................... 29
Attribute
id ............................................. 0xC0
name ........................................... Power-off Retract Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 165
Attribute
id ............................................. 0xC1
name ........................................... Load/Unload Cycle Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 187
Attribute
id ............................................. 0xC2
name ........................................... Current Internal Temperature
normalizedCurrent .............................. 108
normalizedWorst ................................ 101
rawValue ....................................... 39
Attribute
id ............................................. 0xC4
name ........................................... Reallocation Event Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0xC5
name ........................................... Current Pending Sector Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0xC6
name ........................................... Uncorrectable Sector Count
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0
Attribute
id ............................................. 0xC8
name ........................................... Write Error Rate
normalizedCurrent .............................. 200
normalizedWorst ................................ 200
rawValue ....................................... 0