Re: Special Kernel Modification

[Jeff Dike]

[e-mail] said:
> O_DIRECT is synchronous but only in terms of data, if you want the
> metadata to be synchronous as well you need to open with
> O_SYNC|O_DIRECT, and even in such case all the metadata reads will
> came from cache. 

That's OK.  The goal is to cram as many UMLs onto a host as possible by
eliminating caching as much as possible.  If the metadata/data ratio is
small, then the metadata caching probably won't be noticable.

				Jeff