[Gluster-devel] Re : how does mod_glusterfs working ?

[Raghavendra G]

Hi Keith,

A README.txt is added for apache 2.2

regards,

On Wed, Jan 2,1, 2009 at 10:22 PM, Keith Freedman
<freedman at freeformit.com>wrote:

> There doesn't seem to be a README for apache 2.2
> I assume there are some differences.
>
> Also, does this work with virtualhosts?
> if we set the location to /glusterfs
> and the virtual hosts DocumentRoot is /glusterfs/
> then it should work for all of them and go through libglusterfs instead of
> through the filesystem, correct?
>
>
>
> At 09:16 AM 1/21/2009, Raghavendra G wrote:
>
>> Hi Mohan,
>> comments are inlined.
>>
>> On Wed, Jan 21, 2009 at 3:49 PM, mohan L <<mailto:l.mohanphy at gmail.com>
>> l.mohanphy at gmail.com> 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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>>
>>
>>
>> regards,
>> --
>> Raghavendra G
>>
>
>


-- 
Raghavendra G
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