[mythtv] File Size Limitations

John Hurliman jhurliman at focustheater.com
Sat Aug 2 00:03:01 EDT 2003

The filesize limit is in either your choice of filesystem (most likely),
an old version of glibc, or potentially an old kernel but you said you
were using 2.4.21. For mythtv to overcome the limitations of
Windows-based filesystems it would need filesystem detection code. As
far as a table...

Newer versions of glibc, somewhat new kernels, and all modern Linux
filesystems support >2GB files. You could look into formatting ext2 and
using Windows drivers for ext2 (check Google).


On Fri, 2003-08-01 at 21:24, Eric wrote:
> I spent a while figuring out why my mythbackend suddenly gave out on me after 
> 10 minutes and it was hitting file size limitations. I am using kernel 2.4.21 
> and FAT32 to store file. I know its a bad choice for this but its a general 
> purpose storage disk that WinXP must get along with. Anyways, I have some 
> suggestions on this subject:
> 	1) Handle filesize limitations gracefully. Mythbackend quit very suddenly 
> hanging frontend when 2GB hit- automotically split files when it reaches the 
> FS limit instead of aborting. 
> 	2) Gently remind people of some common limitations of filesystems so they 
> (like me) don't make silly mistakes. A table in the FAQ/Docs would be nice. I 
> am aware of FS limitations but am kinda sketchy on what FS/Kernels support 
> what. It's easy enough to figure out, but a table would speed things up and 
> (again) prevent me and others from doing stupid things.
> 	3) Maybe some sort of autodetection. File splitting and max file sizes could 
> be autodetected and hard set so mythbackend doesnt quit suddenly. Also User 
> configuration of file size handling. I know there is a live buffer 
> setting....but more options for file size handling. There could be an option 
> for MAX buffer size and SPLIT file size. For example it could use 10GB but 
> split at 2GB giving you 5 buffer files. 
> I hope this helps development..as the FS limit is kinda frustrating me. It's 
> kinda late so if this post confuses anyone or they want me to explain just cc 
> me.
> ----------------------
> Eric Bambach   
> Eric (at) CISU (dot) net 
> ----------------------
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