[Gluster-users] Distrbute AFR Storage

[Stas Oskin]

Hi.

I'm going to try DHT too, any idea if the next copies would go to another
server?

Or the client would retry to write the file to same server every time, and
return the disk full error?

Regards.

2009/3/28 Simon Liang <simonl at bigair.net.au>

>  Is there a way to use a round-robin or something, as opposed to hash?
>
> The problem with distribute is that it does not know the disk has run out
> of space, until it's starting copying and run out of space.
> Can this be avoided?
>
> -----Original Message-----
> From: seandavi at gmail.com on behalf of Sean Davis
> Sent: Sat 3/28/2009 9:51 PM
> To: Simon Liang
> Cc: Vikas Gorur; gluster-users
> Subject: Re: [Gluster-users] Distrbute AFR Storage
>
>
>
> 2009/3/28 Simon Liang <simonl at bigair.net.au>
>
>
> Well currently I've got 4 servers set up.
>         |- ServerA -AFR-> ServerB
> Client -|
>         |- ServerC -AFR-> ServerD
>
> I keep copying the same 1GB file to the storage, but it always writes to
> ServerC no matter what I do. Is there anything I can do to fix this? Add
> scheduler?
>
>
>
> My understanding is that distribute uses a hash to do the distribution.
> So, if you copy the same file, you will get the same result every time; that
> is, it will go to the same server every time.  Hashing is deterministic in
> that sense.  Vikas or someone else may clarify if I have things wrong
> here....
>
> Sean
>
>
>
>
>
>
>
> -----Original Message-----
> From: vikasgp at gmail.com on behalf of Vikas Gorur
>
> Sent: Sat 3/28/2009 3:53 PM
> To: Simon Liang
> Cc: gluster-users
> Subject: Re: [Gluster-users] Distrbute AFR Storage
>
>
> 2009/3/28 Simon Liang <simonl at bigair.net.au>:
> > How can I configure it so it writes it evenly to both servers, keeping
> the
> > free disk space even?
>
> Distribute by default will distribute _files_ evenly among its
> subvolumes. However, if one of the files is larger than the disk space
> available on the node it gets scheduled to, then distribute can do
> nothing. If you regularly want to store big files which might not fit
> on one of your subvolumes, you might want to try the 'stripe'
> translator.
>
> Vikas
> --
> Engineer - Z Research
> http://gluster.com/
>
>
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