[OpenAFS] Re: about replica

Steven N. Hirsch shirsch@adelphia.net
Tue, 18 Jun 2002 07:45:14 -0400 (EDT)


On 18 Jun 2002, Martin Schulz wrote:

> "Boris H." <boris@openow.net> writes:
> 
> > I wanted to use AFS storage my all data, including mySQL data, and Oracle data. And the data is always changing.
> 
> I think it is a bad idea to load database files in AFS. 
> 
> - its relatively slow (network connection!). 
> 
> - AFS is a distributed filesystem, the database can only run on
> a single machine 
> 
> -  if you need a distributed database use one 
> 
> - AFS consistency is guarantied upon the closure of a file, but a
> database keeps its files open virtually all the time.
> 

Not to mention that AFS doesn't support byte-range locking.  This issue 
has been discussed in more detail in the past - see the list archives.