Re: Read from file fails

[Paulo Marques]

Libor Vanek wrote:

> Using kernel module:
> - user space process wants to change some file which is in "snapshoted" dir
> - my module catches this request, holds it, creates copy of original file and allows original request to proceed


Did you take a look at LVM snapshots?

http://tldp.org/HOWTO/LVM-HOWTO/snapshotintro.html

Maybe your problem is already solved...

Anyway, you really shouldn't worry about the time it takes to make a context 
switch when you want to copy a file on modify ;)

--
Paulo Marques - www.grupopie.com
"In a world without walls and fences who needs windows and gates?"

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