[Gluster-users] Gluster setup question

[Raghavendra G]

Hi,
loading write-behind on client side would help, since write-behind caches
the write buffer and writes that data to server at a later point of time.

regards,

On Thu, Nov 20, 2008 at 11:36 PM, Aleynikov, Serge
<Serge.Aleynikov at gs.com>wrote:

>  Would the booster, writebehind or iothreads translators provide any help
> in this setup to reduce potential blocking of the local client writer due to
> NFS slowness?
>
>  ------------------------------
> *From:* basavanagowda at gmail.com [mailto:basavanagowda at gmail.com] *On
> Behalf Of *Basavanagowda Kanur
> *Sent:* Thursday, November 20, 2008 10:37 AM
> *To:* Aleynikov, Serge
> *Cc:* gluster-users at gluster.org
> *Subject:* Re: [Gluster-users] Gluster setup question
>
>
>
> On Thu, Nov 20, 2008 at 9:01 PM, Aleynikov, Serge <Serge.Aleynikov at gs.com>wrote:
>
>>  I built it from glusterfs-1.3.12.tag.gz source.
>>
>
> my replies in previous mail hold good.
>
>
>>  ------------------------------
>> *From:* basavanagowda at gmail.com [mailto:basavanagowda at gmail.com] *On
>> Behalf Of *Basavanagowda Kanur
>> *Sent:* Wednesday, November 19, 2008 10:50 PM
>> *To:* Aleynikov, Serge
>> *Cc:* gluster-users at gluster.org
>> *Subject:* Re: [Gluster-users] Gluster setup question
>>
>>   Serge,
>>   I am assuming you are not using source code from repository.
>>   If you are using source code directly from repository, then answers
>> below might not hold good. Please mention the version, if you are using from
>> source repository.
>>
>> On Thu, Nov 20, 2008 at 6:13 AM, Aleynikov, Serge <Serge.Aleynikov at gs.com
>> > wrote:
>>
>>>  Hi,
>>>
>>> I am running several clients writing to local disk that are setup to
>>> replicate data to N glusterfs server processes that use NFS for storing this
>>> data.  I have the following questions:
>>>
>>> 1. Does every write of a process to a local directory managed by
>>> glusterfs client involve syncronous replication of data to glusterfs server?
>>>
>> yes. it involves synchronous replication.
>>
>> glusterfs--mailine--3.0--patch-621 (onwards) in our source repository  has
>> an AFR feature called quick-unwind, which would make replication
>> asychronous.
>>
>>   2. Is it possible that if NFS is slow on the glusterfs server side,
>>> then writing to local disk of a process on the glusterfs client's machine
>>> would block?
>>>
>> yes. fops on glusterfs will block.
>>
>>>  Thanks.
>>>
>>> Serge
>>>
>>> _______________________________________________
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>>> Gluster-users at gluster.org
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>>>
>>>
>>
>>
>> --
>> gowda
>>
>>
>
>
> --
> gowda
>
>
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>


-- 
Raghavendra G
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