On Wed, Jan 21, 2009 at 3:49 PM, mohan L
<address@hidden> wrote:
Dear All ,
I read about mod_glusterfs a module for Apache . I understand that
mod_glusterfs is a module for apache-1.3.x written for efficient
serving of files fro, glusterfs( i.e to speed up the access of files
present on glusterfs). mod_glusterfs interfaces with glusterfs using
APIs provided by libglusterfsclient library provided for glusterfs and
hence can be used without FUSE (File System in User Space). FUSE
involves context switches which are sometimes a bit too expensive for
small files.mod_glusterfs , this is an apache module which lets you run
the filesystem inside apache address space (in a seperate thread) which
can greatly boost the performance of serving static files. Entire
GlusterFS filesystem can be embedded into a web farm of Apache or
Lighttpd web servers. This enables web requests to bypass kernel and
access data directly.
still I am not clear about this module . can you please explain ?
1). how does mod_glusterfs is working ? So that i will get more view .
when mod_glusterfs is loaded on apache, all the requests which have certain prefix in the file-path (the prefix is configurable), will be served mod_glusterfs. Please note that, for mod_glusterfs to be working glusterfs need not be mounted in the filesystem hierarchy (hence fuse is not necessary). For more details please refer README.txt in the mod_glusterfs directory of glusterfs source tree.
I want to know more about . Because we are having small db files and also using Apache web server . I am exporting db file to client machine . where I have to use this module? whithout this module what is the issue?
Even without mod_glusterfs, apache can serve the files from the glusterfs mount. In this case glusterfs should be mounted in the local filesystem hierarchy.
As mentioned in the documentation, the advantage of serving files through mod_glusterfs than through the glusterfs mount point is that there is no fuse overhead (context switches from user to kernel space and back) in case of mod_glusterfs.
Thanks for your time
L . Mohan
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