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Rosewood AF Slow reading
http://forum.hddguru.com/viewtopic.php?f=11&t=44332		 Page 1 of 1
Author:  terminator2 [ May 23rd, 2024, 4:13 ]
Post subject:  Rosewood AF Slow reading
I have stopped background scanning of this Rosewood disk & I could Image using 3 heads at 25Mb/Sec.However Head 3 is very slow in reading ( 30KB/sec)
Besides Weak head is there any FW related issue that needs to be addressed for Head3
Can someone pls suggest.

Terminal shows following -

QB
Rst0x80M
TCC:0025:002E EMCDataErr:00000013

PrgF
PrgF
(P)SATAReset

RAWOFF
PASS
Primaryislatest!-00000001Out:Out:
DSC PASSOut:Out:
6GbMaxSpeedloweredto3GbforIntelbug
SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
IDLE1
VC0

XI2
VC1

VC2Up
IDLE2
VC0

VC1

VC2Up
XI2
TCC:0025:0028 EMCDataErr:00000000

FAFH_TRIGGER_POWER_UP
IDLE2
VC0

SetTransferModeselected
UltraDMAselected
VC1

VC2Up
XI2
TCC:0022:0025 EMCDataErr:00000000

StartingLBAofRWRequest=0005845A01Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A01SenseCode=43160080
TCC:0022:0029 EMCDataErr:00000000

(S)SATAReset

SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
(S)SATAReset

SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
SetTransferModeselected
UltraDMAselected
StartingLBAofRWRequest=0005845A01Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A01SenseCode=43160080ProcessRC:00000000,00000000[Host]ReadContinuous:058459DD,00000176UnrecovSectorCount:0176,0175,0176NumUDEs:00000176,00000000,00000175Passed(Host):00000080,0000012BOut:AdjusttoDiscEndLba:
PrgFSkipLBA:05845A01,05845A01
StartingLBAofRWRequest=0005845A02Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A02SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A80Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A84SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A80Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A85SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A80Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A86SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A80Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A87SenseCode=43160080Out:
(S)SATAReset

SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
(S)SATAReset

SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
SetTransferModeselected
UltraDMAselected
StartingLBAofRWRequest=0005845A80Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A80SenseCode=43160080ProcessRC:00000001,00000000[Host]ReadContinuous:058459DD,00000176UnrecovSectorCount:0176,0175,0176NumUDEs:00000176,00000000,00000175Passed(Host):00000080,0000012BOut:AdjusttoDiscEndLba:
PrgFSkipLBA:05845A80,05845A80
StartingLBAofRWRequest=0005845A81Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A81SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A82Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A82SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A83Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A83SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A84Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A84SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A85Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A85SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A86Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A86SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A87Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A87SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A88Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845A88SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A8ELength=FFFFFFFF
ProcessRWError-Read-atLBA0005845A91SenseCode=43160080Out:
StartingLBAofRWRequest=0005845A9ELength=FFFFFFFF
ProcessRWError-Read-atLBA0005845A9ESenseCode=43160080Out:
StartingLBAofRWRequest=0005845A9FLength=FFFFFFFF
ProcessRWError-Read-atLBA0005845A9FSenseCode=43160080Out:
StartingLBAofRWRequest=0005845A9FLength=FFFFFFFF
ProcessRWError-Read-atLBA0005845AA0SenseCode=43160080
(S)SATAReset

SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
(S)SATAReset

SendStatus:COMRESETseen
CSpd=3Gbps
FIS34
SetTransferModeselected
UltraDMAselected
StartingLBAofRWRequest=0005845A9FLength=FFFFFFFF
ProcessRWError-Read-atLBA0005845A9FSenseCode=43160080Out:
StartingLBAofRWRequest=0005845AA0Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845AA0SenseCode=43160080Out:
StartingLBAofRWRequest=0005845AA1Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845AA1SenseCode=43160080ProcessRC:00000001,00000000[Host]ReadContinuous:058459DD,00000176UnrecovSectorCount:0176,0175,0176NumUDEs:00000176,00000000,00000175Passed(Host):00000080,0000012BOut:AdjusttoDiscEndLba:
PrgFSkipLBA:05845AA1,05845AA1
StartingLBAofRWRequest=0005845AA2Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845AA2SenseCode=43160080ProcessRC:00000001,00000000[Host]ReadContinuous:058459DD,00000176UnrecovSectorCount:0176,0175,0176NumUDEs:00000176,00000000,00000175Passed(Host):00000080,0000012BOut:AdjusttoDiscEndLba:
PrgFSkipLBA:05845AA2,05845AA2
StartingLBAofRWRequest=0005845AA3Length=FFFFFFFF
ProcessRWError-Read-atLBA0005845AA3SenseCode=43160080Out:

Attachments:
eb01.PNG
eb01.PNG [ 59.62 KiB | Viewed 5797 times ]
Author:  pepe [ May 23rd, 2024, 8:11 ]
Post subject:  Re: Rosewood AF Slow reading
- either very weak head
- head map changed

The data you get is likely invalid buffer fill pattern. Are there any good areas on H3 ?
Author:  terminator2 [ May 23rd, 2024, 9:09 ]
Post subject:  Re: Rosewood AF Slow reading
pepe wrote:
- either very weak head
- head map changed

The data you get is likely invalid buffer fill pattern. Are there any good areas on H3 ?


Thanks pepe Happy to have most accurate analysis from seagate Guru .
Yes head 3 might be weak , I have not changed headmap .I will check randomly whether all the area under head 3 is having same symptoms or specific zones only.
I have observed that most of the rosewoods lost normal detection & id after unlock , may I am not able to use even 5% potential of pc3k.
Is there anything I can try to refine other than head transplant ?
Author:  pepe [ May 23rd, 2024, 10:32 ]
Post subject:  Re: Rosewood AF Slow reading
i usually decide what to do by checking signal quality.
without instrumentation there's not much else you can do than try a swap.
Author:  terminator2 [ May 24th, 2024, 0:36 ]
Post subject:  Re: Rosewood AF Slow reading
pepe wrote:
i usually decide what to do by checking signal quality.
without instrumentation there's not much else you can do than try a swap.


Thanks . I am mostly in logical recoveries & I have brought pc3k for simpler fw cases. I outsource my head related work as well ascomplex fw cases as I have very basic operational skills of pc3k.
Author:  fzabkar [ June 5th, 2024, 17:02 ]
Post subject:  Re: Rosewood AF Slow reading
I notice that there is this field in Module 0x34 (Congen definitions):

Code:
<field idx="1205">
   <name>DISABLE_CORRECTION</name>
   <grp>RWErrorRecovery</grp>
   <desc>
      <line>1 = Only on-the-fly ECC correction shall be applied.</line>
      <line>0 = Maximum ECC correction shall be applied if correction is possible.</line>
   </desc>
   <bitoffset>0</bitoffset>
   <bitlen>1</bitlen>
   <defaultval>0</defaultval>
   <parent>1000</parent>
</field>

Perhaps the following command at Level T will speed up the reading? I don't know if it is safe, though.

    F3 T>F"DISABLE_CORRECTION",1,22

The attached file is from a Rosewood A5.

Attachments:
~0034.7z [33.42 KiB]
Downloaded 249 times
Author:  terminator2 [ June 5th, 2024, 23:52 ]
Post subject:  Re: Rosewood AF Slow reading
fzabkar wrote:
I notice that there is this field in Module 0x34 (Congen definitions):

Code:
<field idx="1205">
   <name>DISABLE_CORRECTION</name>
   <grp>RWErrorRecovery</grp>
   <desc>
      <line>1 = Only on-the-fly ECC correction shall be applied.</line>
      <line>0 = Maximum ECC correction shall be applied if correction is possible.</line>
   </desc>
   <bitoffset>0</bitoffset>
   <bitlen>1</bitlen>
   <defaultval>0</defaultval>
   <parent>1000</parent>
</field>

Perhaps the following command at Level T will speed up the reading? I don't know if it is safe, though.



    F3 T>F"DISABLE_CORRECTION",1,22

The attached file is from a Rosewood A5.


I will give it a try it might work .Thank You
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