nsc wrote:
> Hi
>
> I recently shifted my code from Vx5.5 to Vx6.6.
>
> i am seeing a peculiar problem after making the switch. I have a FAT16
> dos filesystem on a RamDrive. After creating some files on this file
> system, if I run chkdsk command, i get the following error for
> multiple files,
>
>
> "filename.xxx" file larger than its chain of clusters Entry will be
> deleted.
>
> I have moved the filsystem to different areas of the RAM just to make
> sure that no other process is messing with this RAM area. The error
> scenario is also very consistent.
>
> Any clue on what could cause this behavior will be appreciated.
>
> Thanks.
>

You mean other than the fact that you appear to be using a bleeding edge
not yet released version of the OS? (I thought 6.4 just came out)

In any case a few random guesses.

1) Files not closed yet and newer vxWorks using more aggressive
buffering than 5.5 (potentially different default values for
disk/cache/buffers and the DoSFS not really realizing that underlying
device is a ramdisk and thus does not really need the buffers)

2) Even if the files are closed, it could be possible that buffering is
still playing a role.

I'd open a TSR.