[Gluster-users] mod_glusterfs?

[Raghavendra G]

On Tue, Mar 23, 2010 at 5:05 PM, Ian Rogers <ian.rogers at contactclean.com>wrote:

>  Yes I know, I reported that bug :-)
>
> If you're using io-cache then quick-read seems irrelevant as io-cache has
> 128K pages internally.
>

io-cache and quick-read perform different functions. Normally while reading
a file, glusterfs (fuse) get following calls from VFS,

lookup,
open,
read,
.
.
.
read,
flush,
close.

But quick-read exploits an internal feature of glusterfs present in lookup
to get the entire file in lookup call itself. Hence open, read and close
calls are short-cut at quick-read itself and they don't reach server thereby
saving 3 transactions over network (probably more due to read).

>
> Ian
>
>
> On 23/03/2010 05:26, Raghavendra G wrote:
>
> read it as "Also note that"
>
> On Tue, Mar 23, 2010 at 9:25 AM, Raghavendra G <raghavendra at gluster.com>wrote:
>
>> Also not that with quick-read there is an issue with memory consumption,
>> which will be fixed shortly.
>> http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723
>>
>>
>> On Tue, Mar 23, 2010 at 9:21 AM, Raghavendra G <raghavendra at gluster.com>wrote:
>>
>>> Hi Ian,
>>>
>>> Try using quick-read for glusterfs, if you are planning to use apache.
>>>
>>> regards,
>>>  On Mon, Mar 22, 2010 at 6:21 PM, Ian Rogers <
>>> ian.rogers at contactclean.com> wrote:
>>>
>>>>  On 22/03/2010 13:59, sac wrote:
>>>>
>>>>> Hello Ian,
>>>>>
>>>>>
>>>>> On Mon, Mar 22, 2010 at 7:07 PM, Ian Rogers <
>>>>> ian.rogers at contactclean.com <mailto:ian.rogers at contactclean.com>>
>>>>> wrote:
>>>>>
>>>>>
>>>>>    Is mod_glusterfs still recommended for apache servers?
>>>>>
>>>>>    This message -
>>>>>    http://www.mail-archive.com/gluster-devel@nongnu.org/msg06304.html
>>>>>    - suggests that mod_glusterfs would be replaced with booster, but
>>>>>    I've also seen that booster is now deprecated...
>>>>>
>>>>>
>>>>>  mod_glusterfs is no longer supported or maintained. GlusterFS
>>>>> performance has improved overtime when files are served using Apache and
>>>>> hence mod_glusterfs is deprecated.
>>>>>
>>>>> Please use glusterfs-volgen to generate your volume files, it will
>>>>> produce optimized volume files that will increase performance for you.
>>>>>
>>>>> Sachidananda.
>>>>>
>>>>>
>>>> Thanks Sachidananda,
>>>>
>>>> The gluster wiki -
>>>> http://www.gluster.com/community/documentation/index.php/Getting_modglusterfs_to_work- should be updated to reflect this.
>>>>
>>>> I've found that glusterfs-volgen is not much good and have optimised my
>>>> vol files by hand to suit our system. I'll write up my experiences soon.
>>>>
>>>>
>>>> Cheers,
>>>>
>>>> Ian
>>>>
>>>> --
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>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>> --
>>> Raghavendra G
>>>
>>>
>>
>>
>>  --
>> Raghavendra G
>>
>>
>
>
> --
> Raghavendra G
>
>
>
> -- www.ContactClean.com
> Making changing email address as easy as clicking a mouse.
> Helping you keep in touch.
>
>
>


-- 
Raghavendra G