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: Jim L. <lo...@gm...> - 2006-07-06 15:10:24
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I had a similar issue with an AVR 128L microprocessor and 8 sectors. The
computer that I was using to read the files was running WinXP with an
internal multi-card reader.
After beating my head against the wall for a period of time the problem just
went away. The only things that I changed were changing the sectors to 16
and moving to an external USB SD card reader.
In hind sight, I should have gone back and found the root cause ;-)
Sorry for the interruption.
Jim Lowe
On 7/6/06, M. Bester <m.b...@mi...> 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
> >>
> >> !DSPAM:44ad0ce1155888644242515!
> >>
> >>
> >
> > 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
>
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