SDHC Sony SF-8UX, advertised as 94MB/s max read spee
I=92m 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=3D0x2<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=92m using:
[root@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@ativ.local:/usr/obj/usr/src/sys/NEWCONS amd64
I=92ve tested the card in Mac OS X on a Mac mini and in Windows 8 on the sa=
me
laptop, without problems. I=92ve only noted that the I/O speed is much low=
er
on the Mac mini.
Mac Write:
mac-mini:~ maurizio$ sudo dd if=3D/dev/zero of=3D/dev/disk1 bs=3D1048576
count=3D200
209715200 bytes transferred in 138.019361 secs (1519462 bytes/sec)
Mac Read:
mac-mini:~ maurizio$ sudo dd of=3D/dev/null if=3D/dev/disk1 bs=3D1048576
count=3D200
209715200 bytes transferred in 23.719487 secs (8841473 bytes/sec)
FreeBSD Write:
[root@ativ ~]# dd if=3D/dev/zero of=3D/dev/da0 bs=3D1048576 count=3D200
209715200 bytes transferred in 13.647264 secs (15366831 bytes/sec)
FreeBSD Read:
[root@ativ ~]# dd of=3D/dev/null if=3D/dev/da0 bs=3D1048576 count=3D200
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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