[mythtv] File Size Limitations

DanM dan at milkcarton.com
Sat Aug 2 10:56:52 EDT 2003

Eric, your email probably hasn't recieved the reception you would have 
hoped for, so I have taken the liberty of translating your email so that 
Isaac and the others can more effectively understand what you want:

Using my leet skillz to debug why mythbackend was dying, I discovered 
that my filesystem doesn't support file sizes larger than 2gb.  Now, I 
know you have spent like a bazillion hours working on this program, but 
if you spent another billion, it would be so much more to my liking.  
Here is how I would like you to fix it for me:

1)  Because I'm using a lame filesystem, please develop the esp module 
for mythbackend so it can properly detect the lame filesystem, and split 
the files when they get bigger then 1mb.
2) Please have the esp module for mythbackend warn cluebies (such as 
myself) that using FAT32 for large files is utterly insane; but please 
be gentle with the message. . . I don't want it to damage my fragile 
ego.  After all, I am a Certified Microsoft whore.
3) You know that esp module I asked you to write, well I need you to do 
some more work on it some more. . . I want it to open up a black hole 
and envelop my entire computer when it detects its reached the limit of 
the filesystem I have so intelligently choosen to use.

In closing, because you are all geeks and don't mind spending the rest 
of your lives in a dungeon, I would like you to solve all my problems.  
Its getting kind of late, my mommie makes me go to bed a nine o'clock; 
so my email confuses even myself.

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 
>Eric Bambach   
>Eric (at) CISU (dot) net 
>mythtv-dev mailing list
>mythtv-dev at mythtv.org

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