SDHC Sony SF-8UX don’t works.

Maurizio Vairani maurizio.vairani at cloverinformatica.it
Wed Feb 5 09:42:59 UTC 2014


Thank you Daryl
using /dev/rdisk1 the Mac-mini is the winner:

Mac Read:
mac-mini:~ maurizio$ sudo dd of=/dev/null  if=/dev/rdisk1 bs=1048576 
count=200
209715200 bytes transferred in 2.631920 secs (79681446 bytes/sec)
Mac Write:
mac-mini:~ maurizio$ sudo dd if=/dev/zero  of=/dev/rdisk1 bs=1048576 
count=200
209715200 bytes transferred in 11.709435 secs (17909933 bytes/sec)

On 04/02/2014 20:07, Daryl Richards wrote:
> Just to you since kinda OT:
>
> On the mac, use /dev/rdiskn instead of /dev/diskn. The rdisk is raw 
> and works much faster than disk..
>
> On 2/3/2014, 11:21 AM, Maurizio Vairani wrote:
>> I'm trying to use this SDHC as a ZFS cache on a Samsung laptop:
>> da0 at umass-sim0 bus 0 scbus3 target 0 lun 0
>> da0: <Multiple Card  Reader 1.00> Removable Direct Access SCSI-0 device
>> da0: Serial Number 058F63666438
>> da0: 40.000MB/s transfers
>> da0: 7667MB (15702016 512 byte sectors: 255H 63S/T 977C)
>> da0: quirks=0x2<NO_6_BYTE>
>>
>> After some minutes of usage this error is displayed :
>> (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 0a 97 9f 00 00 05 00
>> (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error
>> (da0:umass-sim0:0:0:0): SCSI status: Check Condition
>> (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not 
>> ready to ready change, medium may have changed)
>> (da0:umass-sim0:0:0:0): Command Specific Info: 0xaa5501
>> (da0:umass-sim0:0:0:0): Retrying command (per sense data)
>> (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 00 00 0a 97 9f 00 00 05 00
>> (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error
>> (da0:umass-sim0:0:0:0): SCSI status: Check Condition
>> (da0:umass-sim0:0:0:0): SCSI sense: NOT READY asc:3a,0 (Medium not 
>> present)
>> (da0:umass-sim0:0:0:0): Command Specific Info: 0xaa5501
>> (da0:umass-sim0:0:0:0): Error 6, Unretryable error
>> (da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 01 00 00 01 00
>> (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error
>> (da0:umass-sim0:0:0:0): SCSI status: Check Condition
>> (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not 
>> ready to ready change, medium may have changed)
>> (da0:umass-sim0:0:0:0): Command Specific Info: 0xaa5501
>> (da0:umass-sim0:0:0:0): Retrying command (per sense data)
>> (da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 00 00 01 00 00 01 00
>> (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error
>> (da0:umass-sim0:0:0:0): SCSI status: Check Condition
>> (da0:umass-sim0:0:0:0): SCSI sense: NOT READY asc:3a,0 (Medium not 
>> present)
>> (da0:umass-sim0:0:0:0): Command Specific Info: 0xaa5501
>> (da0:umass-sim0:0:0:0): Error 6, Unretryable error
>> GEOM: da0: corrupt or invalid GPT detected.
>> GEOM: da0: GPT rejected -- may not be recoverable.
>>
>> Trying to use the SDHC as a MS-DOS device I have receive the error:
>> (da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 4a 00 00 00 00 80 00
>> (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error
>> (da0:umass-sim0:0:0:0): SCSI status: Check Condition
>> (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not 
>> ready to ready change, medium may have changed)
>> (da0:umass-sim0:0:0:0): Command Specific Info: 0xaa5501
>> (da0:umass-sim0:0:0:0): Retrying command (per sense data)
>> (da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 4a 00 00 00 00 80 00
>> (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error
>> (da0:umass-sim0:0:0:0): SCSI status: Check Condition
>> (da0:umass-sim0:0:0:0): SCSI sense: NOT READY asc:3a,0 (Medium not 
>> present)
>> (da0:umass-sim0:0:0:0): Command Specific Info: 0xaa5501
>> (da0:umass-sim0:0:0:0): Error 6, Unretryable error
>>
>> I'm using:
>> [root at ativ ~/bin]# uname -a
>> FreeBSD ativ.local 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r260700: Thu 
>> Jan 16 07:03:04 CET 2014 
>> root at ativ.local:/usr/obj/usr/src/sys/NEWCONS  amd64
>>
>> I've tested the card in Mac OS X on a Mac mini and in Windows 8 on 
>> the same laptop, without problems. I've only noted that the I/O speed 
>> is  much lower on the Mac mini.
>>
>> Mac Write:
>> mac-mini:~ maurizio$ sudo dd if=/dev/zero  of=/dev/disk1 bs=1048576 
>> count=200
>> 209715200 bytes transferred in 138.019361 secs (1519462 bytes/sec)
>> Mac Read:
>> mac-mini:~ maurizio$ sudo dd of=/dev/null  if=/dev/disk1 bs=1048576 
>> count=200
>> 209715200 bytes transferred in 23.719487 secs (8841473 bytes/sec)
>>
>> FreeBSD Write:
>> [root at ativ ~]# dd if=/dev/zero  of=/dev/da0 bs=1048576 count=200
>> 209715200 bytes transferred in 13.647264 secs (15366831 bytes/sec)
>> FreeBSD Read:
>> [root at ativ ~]# dd of=/dev/null  if=/dev/da0 bs=1048576 count=200
>> 209715200 bytes transferred in 11.050251 secs (18978320 bytes/sec)
>>
>> Windows Write:
>> with DH_Speed 1 min. test 16M/sec
>> Windows Read:
>> with DH_Speed 1 min. test 17.4M/sec
>>
>> Regards,
>> Maurizio
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