ZFS HBAs + LSI chip sets (Was: ZFS hang (system #2))

[Daniel Kalchev]

On 12.11.12 11:18, Steven Hartland wrote:
> ----- Original Message ----- From: "Daniel Kalchev" <daniel at digsys.bg>
>
>> As weird as it sounds, I discovered that my SSD-only zpool (raidz1)  
>> was using ashift=9. So, changed to ashift=12 and not seen disconnects 
>> anymore for a week now. Is 4k good for these SSDs? Or 8k is better, 
>> or larger?
>>
>> It seems it's really an SSD firmware problem, as the SSDs are likely 
>> doing more work when used with 512b sectors and from time to time 
>> fail to communicate properly with the bus. The SSDs are OCZ-VERTEX4 
>> (firmware 1.5).
>>
>> Sometimes it seems to be drive related problem and perhaps the mps 
>> driver/hardware  is too sensitive to drive issues.
>
> I don't know any SSD or drives for that matter using larger than 4k 
> sectors.
>
> Could you post the output from:-
> camcontrol identify <device>
>
> I've got a list of other 4k drives to add quirks for so might as well
> include this one while I'm at it :)

Quirks, yes.

camcontrol identify da0

returns nothing :)

camcontrol inquiry da0

returns

pass0: <ATA OCZ-VERTEX4 1.5> Fixed Direct Access SCSI-6 device
pass0: Serial Number OCZ-9DS07S644P10JV16
pass0: 600.000MB/s transfers, Command Queueing Enabled

smartctl -a /dev/da0

returns more useful info

smartctl 6.0 2012-10-10 r3643 [FreeBSD 9.1-PRERELEASE amd64] (local build)
Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Indilinx Everest/Martini based SSDs
Device Model:     OCZ-VERTEX4
Serial Number:    OCZ-9DS07S644P10JV16
LU WWN Device Id: 5 e83a97 2e1c46899
Firmware Version: 1.5
User Capacity:    128,035,676,160 bytes [128 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-2 (minor revision not indicated)
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon Nov 12 11:52:32 2012 EET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x00) Offline data collection activity
                                         was never started.
                                         Auto Offline Data Collection: 
Disabled.
Self-test execution status:      (   0) The previous self-test routine 
completed
                                         without error or no self-test 
has ever
                                         been run.
Total time to complete Offline
data collection:                (    0) seconds.
Offline data collection
capabilities:                    (0x1d) SMART execute Offline immediate.
                                         No Auto Offline data collection 
support.
                                         Abort Offline collection upon new
                                         command.
                                         Offline surface scan supported.
                                         Self-test supported.
                                         No Conveyance Self-test supported.
                                         No Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                         power-saving mode.
                                         Supports SMART auto save timer.
Error logging capability:        (0x00) Error logging NOT supported.
                                         General Purpose Logging supported.
Short self-test routine
recommended polling time:        (   0) minutes.
Extended self-test routine
recommended polling time:        (   0) minutes.

SMART Attributes Data Structure revision number: 18
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      
UPDATED  WHEN_FAILED RAW_VALUE
   1 Raw_Read_Error_Rate     0x0000   006   000   000    Old_age   
Offline      -       6
   3 Spin_Up_Time            0x0000   100   100   000    Old_age   
Offline      -       0
   4 Start_Stop_Count        0x0000   100   100   000    Old_age   
Offline      -       0
   5 Reallocated_Sector_Ct   0x0000   100   100   000    Old_age   
Offline      -       0
   9 Power_On_Hours          0x0000   100   100   000    Old_age   
Offline      -       2323
  12 Power_Cycle_Count       0x0000   100   100   000    Old_age   
Offline      -       23
232 Lifetime_Writes         0x0000   100   100   000    Old_age   
Offline      -       101076764290
233 Media_Wearout_Indicator 0x0000   090   000   000    Old_age   
Offline      -       90

SMART Error Log not supported

Warning! SMART Self-Test Log Structure error: invalid SMART checksum.
SMART Self-test log structure revision number 1
No self-tests have been logged.  [To run self-tests, use: smartctl -t]


Selective Self-tests/Logging not supported

Daniel