Re: TFAT stability
- From: "Bruce Eitman \(eMVP\)" <beitmannospam@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 5 Jul 2005 10:42:01 -0400
I have also seen these failures on a few platforms, both CE 4.2 and 5.0. I
think that it has a lot to do with background compaction and removing power
while the flash is being modified.
--
Bruce Eitman (eMVP)
Senior Engineer
beitman AT applieddata DOT net
Applied Data Systems
www.applieddata.net
An ISO 9001:2000 Registered Company
Microsoft WEP Gold-level Member
"turnsek" <turnsek@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:A6C143B2-6D21-49DF-8F05-B5950ECE3A2A@xxxxxxxxxxxxxxxx
> Hi all!
>
> We have PXA255 based platform with WCE42 and we are testing stability of
the
> platform. Our hardware is not battery backed and we rely on powerdown
driver
> and TFAT file system. We have noticed that after number of power down and
> power up cycles (quite a lot) our platform dies. We have flash resident
> persistent registry (hive based). Platform could not start anymore. I am
> suspecting that the file-system is corrupted (so the registry too). We are
> using msflash strata driver.
> Our settings are:
>
> [HKEY_LOCAL_MACHINE\System\StorageManager]
> "Dll"="fsdmgr.dll"
> "PNPUnloadDelay"=dword:0
>
> ; @CESYSGEN IF CE_MODULES_STRATAD
> ; HIVE BOOT SECTION
> ; StrataFlash block driver.
> [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\StrataFMD]
> "Dll"="stratad.dll"
> "Order"=dword:2
> "Prefix"="DSK"
> "Ioctl"=dword:4
> "Profile"="MSFlash"
> "IClass"="{A4E7EDDA-E575-4252-9D6B-4195D48BB865}"
> "MemBase"=dword:b9300000
> "MemLen"=dword:03000000
> "Flags"=dword:1000
>
> ; Override names in default profile
> [HKEY_LOCAL_MACHINE\System\StorageManager\Profiles\MSFlash]
> "Name"="MSFLASH for STRATAFLASH"
> "Folder"="Storage Card"
>
> [HKEY_LOCAL_MACHINE\System\StorageManager\Profiles]
> "AutoMount"=dword:1
> "AutoPart"=dword:1
> "AutoFormat"=dword:1
>
> ; Keep FATFS from trying to shadow \Windows
> [HKEY_LOCAL_MACHINE\System\StorageManager\Profiles\MSFlash\FATFS]
> "MountFlags"=dword:2
>
> [HKEY_LOCAL_MACHINE\System\StorageManager\AutoLoad\MSFlash]
> "DriverPath"="Drivers\\BuiltIn\\StrataFMD"
> "LoadFlags"=dword:1
> "Order"=dword:0
>
> ; END HIVE BOOT SECTION
> ; @CESYSGEN ENDIF CE_MODULES_STRATAD
>
>
> ; @CESYSGEN IF FILESYS_FSREGHIVE
> ; HIVE BOOT SECTION
> [HKEY_LOCAL_MACHINE\init\BootVars]
> "SYSTEMHIVE"="Registry\\system.hv"
> "PROFILEDIR"="Registry"
> "Start DevMgr"=dword:1
> "DefaultUser"="Iskraemeco"
> ;Causing some debugchk's in debug version,
> ;performance monitoring tools doesn't work.
> ;RegistryFlags"=dword:1
> ; END HIVE BOOT SECTION
> ; @CESYSGEN ENDIF FILESYS_FSREGHIVE
>
> [HKEY_LOCAL_MACHINE\System\StorageManager\FATFS]
> "FriendlyName"="FAT FileSystem"
> "Dll"="fatfsd.dll"
> ;"Flags"=dword:00000024
> "Flags"=dword:007C0028
> "Paging"=dword:1
> "EnableCache"=dword:1
> "CacheSize"=dword:0
> "Util"="fatutil.dll"
> "FormatTfat"=dword:1
> ; END HIVE BOOT SECTION
> ; @CESYSGEN ENDIF CE_MODULES_FATFSD
>
>
> Any help would be more then welcome.
>
> Thanks, Jernej
>
.
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