Re: [Efsl-devel] 127 file limit in a subdirectory
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Re: [Efsl-devel] 127 file limit in a subdirectory
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From: Daniel M. <da...@ma...> - 2006-07-06 17:48:55
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I am using an ARM7 to do the writing - like i said on the notes, it
writes it fine to the root (200 files), but not to a subdir.
I am using a card reader from sandisk to read it into windows2k.
I re-formatted the card to use 16 sectors per cluster, it still wont
work - it seems that the code aborts after writing only a few files. Ill
have to spend a bit more time to get some meaningful detail on the issue.
Daniel
M. Bester wrote:
> Hello Daniel,
>
> Daniel Medeiros schrieb:
>
>> Here is a bit more of information. I have tried two 256M SD cards, both
>> with the same result.
>> efs.myFs.volumeId.SectorsPerCluster=8
>>
>> Here is a quick snippet of code:
>>
>>
>> for(i=0;i<200;i++) {
>> get_filename(&state,1);
>> strcpy(&tmpstr,state.file_data);
>> strcpy(state.file_data,"DATA/");
>> strcat(state.file_data,tmpstr);
>> file_fopen(&file_gpx,&efs.myFs,state.file_data,'w');
>> file_write(&file_gpx,1,"2");
>> delay_ms(10);
>> file_fclose(&file_gpx);
>> }
>> fs_umount(&efs.myFs);
>>
>>
> For me this looks okay.
> I'm testing on a PC where I load an image file as medium. I've just put
> the image file on a 256MB SD card and it looks fine under WinXP. The
> format is 16 sectors per cluster.
> What hardware are you using?
>
>
>> The get_filename function just formats and creates my files (currently
>> an index of 1up numbers).
>> I append the directory info to it, then write 1 character, close the
>> file, and loop.
>> I am including a link of a screenshot of that directory (so you can see
>> the corruption).
>> http://www.marslabs.com/dir1.jpg
>> http://www.marslabs.com/dir2.jpg
>>
>> Now, if I execute the same code on the root directory, I can write out
>> the 200 files without a problem.
>>
>>
>> Any ideas off hand? Thanks
>>
>> Daniel Medeiros wrote:
>>
>>> I am using 0.2.7 to create the files. I assumed 512 was for all dirs
>>> (including the root). The issue for me still remains that for some
>>> reason, after creating the 127th file, it trashes the fat table in the
>>> subdir in question. Ill run some more tests on it to try to narrow where
>>> the corruption is happening.
>>>
>>>
>>> M. Bester wrote:
>>>
>>>
>>>> Hello,
>>>>
>>>> what EFSL version are you using?
>>>> I'm using 0.2.7 and I've just created 513 files in a single subdirectory
>>>> without a problem.
>>>> To my knowledge the limit of 512 files applies only to the root directory.
>>>>
>>>> Marko
>>>>
>>>> Daniel Medeiros schrieb:
>>>>
>>>>
>>>>
>>>>> I will check the FAT, and look at the # of clusters. I know that FAT16
>>>>> has a limit of 512, and for the application I am making its possible
>>>>> that there will be more files created than that over time, so Ill have
>>>>> to roll them into directories anyway. The issue then would become is it
>>>>> 100+ files per dir or 500+ files per dir.
>>>>> Have a great Holiday
>>>>>
>>>>> Daniel
>>>>>
>>>>> Lennart Yseboodt wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Hi Daniel,
>>>>>>
>>>>>> Sounds like a bug to me. 127 is like 128, and 128/16=8.
>>>>>> Is it possible you have 8 sectors per cluster ?
>>>>>>
>>>>>> I will try to look into this issue, but I will be honest, I'm leaving for
>>>>>> hollidays on the 11th and have a lot of things to do until then, so
>>>>>> if you need this fix fast you will have to do it yourself I'm afraid :)
>>>>>>
>>>>>> Maybe Michael has time ?
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> Lennart
>>>>>>
>>>>>> Daniel Medeiros wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> I am running into a problem and before I spend too much time on it I
>>>>>>> wanted to get your opinions as someone may put me on the right track.
>>>>>>> Inside a subdirectory off the root of the SD, as soon as I write out 127
>>>>>>> files, the contents of that directory get too garbled (it puts trash
>>>>>>> data/directories).
>>>>>>> I verified this with two different SD cards (so I dont think the issue
>>>>>>> is the SD in question). Everything works fine until I hit that limit. I
>>>>>>> know that FAT 16 has a limit of 512 files per directory, so I wouldn't
>>>>>>> have though I would hit it this soon. Any suggestions as to what may be
>>>>>>> going on? Thanks
>>>>>>>
>>>>>>> Daniel
>>>>>>>
>>>>>>> Using Tomcat but need to do more? Need to support web services, security?
>>>>>>> Get stuff done quickly with pre-integrated technology to make your job easier
>>>>>>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>>>>>>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>>>>>>> _______________________________________________
>>>>>>> Efsl-devel mailing list
>>>>>>> Efs...@li...
>>>>>>> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> Using Tomcat but need to do more? Need to support web services, security?
>>>>>> Get stuff done quickly with pre-integrated technology to make your job easier
>>>>>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>>>>>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>>>>>> _______________________________________________
>>>>>> Efsl-devel mailing list
>>>>>> Efs...@li...
>>>>>> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> Using Tomcat but need to do more? Need to support web services, security?
>>>>> Get stuff done quickly with pre-integrated technology to make your job easier
>>>>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>>>>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>>>>> _______________________________________________
>>>>> Efsl-devel mailing list
>>>>> Efs...@li...
>>>>> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>> Using Tomcat but need to do more? Need to support web services, security?
>>>> Get stuff done quickly with pre-integrated technology to make your job easier
>>>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>>>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>>>> _______________________________________________
>>>> Efsl-devel mailing list
>>>> Efs...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>> Using Tomcat but need to do more? Need to support web services, security?
>>> Get stuff done quickly with pre-integrated technology to make your job easier
>>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>>> _______________________________________________
>>> Efsl-devel mailing list
>>> Efs...@li...
>>> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>>>
>>>
>>>
>>>
>>>
>> Using Tomcat but need to do more? Need to support web services, security?
>> Get stuff done quickly with pre-integrated technology to make your job easier
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> _______________________________________________
>> Efsl-devel mailing list
>> Efs...@li...
>> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>>
>>
>>
>>
>
>
>
>
>
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Efsl-devel mailing list
> Efs...@li...
> https://lists.sourceforge.net/lists/listinfo/efsl-devel
>
> !DSPAM:44ad2504197521497611852!
>
>
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