On 06.05.2011 18:17, Whit Blauvelt wrote: > On Fri, May 06, 2011 at 06:06:02PM +0200, Tomasz Chmielewski wrote: > >> Read access should be fine though (with noatime mount), and >> shouldn't break things? > > Nice question. > > Even if it is safe to only read (seems it should be), does mounting through > fuse add enough system load to be worth not using? Or is this just about > saving the moment of labor needed to do the mount? It's not just "fuse add enough system load" - it's the extra work glusterfs does. I.e. when reading any file, it sends stat() to every gluster server I think, for that file. Try doing this experiment, with these assumptions: /data - directory containing the files physically /shared - mounted gluster volume The directories should be big enough (i.e. so that ls -lR /data takes at least 20 secs). time ls -lR /data 1>/dev/null time ls -lR /shared 1>/dev/null You'll see how much overhead glusterfs is! -- Tomasz Chmielewski http://wpkg.org
