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Old 12-15-2009, 08:56 PM
John R Pierce
 
Default Using (was: Announcing) Gluster Storage Platform

Alan McKay wrote:
> What is it?
> Why would I use it?
> What would I use instead of it? (Who are its competitors)
> When would I not use it?
>

and more importantly, what does it have to do with CentOS ?


note they spammed the postgresql mail list with the same announcement.
I'm pretty sure I do *not* want to store my postgres databases on such a
cluster.


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Old 12-15-2009, 11:48 PM
Christopher Chan
 
Default Using (was: Announcing) Gluster Storage Platform

Alan McKay wrote:
> OK, you have my attention. But reading around on the website for 5 or
> 10 minutes and I'm still not sure what this is.
>
> What is it?

A cluster filesystem

> Why would I use it?

Because the alternatives are either not up to it or fraught with problems.

> What would I use instead of it? (Who are its competitors)

Maybe Lustre or GFS if you have a small (note: SMALL) deployment.

> When would I not use it?

When you do not need/want a cluster file system that still gives you an
alternative access mechanism (cifs, nfs, whatever) to your data if
certain crucial bits go down.

>
> I see this "The software is a powerful and flexible solution that
> simplifies the task of managing unstructured file data", but I have no
> idea what "unstructured file data" means.
>

Me neither but I have me eyes on GlusterFS and I have been waiting for
OpenSolaris support as a client or I will be using Centos 5 as a client.
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Old 12-16-2009, 12:48 PM
Alan McKay
 
Default Using (was: Announcing) Gluster Storage Platform

On Tue, Dec 15, 2009 at 7:48 PM, Christopher Chan
<christopher.chan@bradbury.edu.hk> wrote:
> A cluster filesystem

OK, but you've just given me a circular definition.

> When you do not need/want a cluster file system

and again ...





--
“Don't eat anything you've ever seen advertised on TV”
- Michael Pollan, author of "In Defense of Food"
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Old 12-16-2009, 01:08 PM
Chan Chung Hang Christopher
 
Default Using (was: Announcing) Gluster Storage Platform

Alan McKay wrote:
> On Tue, Dec 15, 2009 at 7:48 PM, Christopher Chan
> <christopher.chan@bradbury.edu.hk> wrote:
>> A cluster filesystem
>
> OK, but you've just given me a circular definition.
>
>> When you do not need/want a cluster file system
>
> and again ...
>

Okay, a cluster/distributed file system that does not have its own on
disk format. It makes use of whatever existing filesystem there is for
actual storage and allows you to replicate files/load balance requests
to files to 'storage servers' of any supported platform.

At the same time, user level processes on 'clients' access the system as
if it was an actual file system.

This enables one to have Linux clients that run say samba to export the
files to Windows clients but the actual files are kept on OpenSolaris
servers on zfs. Should the Linux clients all go down, the Windows
clients could still access the files on the OpenSolaris servers via samba.
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Old 12-16-2009, 03:13 PM
Les Mikesell
 
Default Using (was: Announcing) Gluster Storage Platform

Chan Chung Hang Christopher wrote:
> Alan McKay wrote:
>> On Tue, Dec 15, 2009 at 7:48 PM, Christopher Chan
>> <christopher.chan@bradbury.edu.hk> wrote:
>>> A cluster filesystem
>> OK, but you've just given me a circular definition.
>>
>>> When you do not need/want a cluster file system
>> and again ...
>>
>
> Okay, a cluster/distributed file system that does not have its own on
> disk format. It makes use of whatever existing filesystem there is for
> actual storage and allows you to replicate files/load balance requests
> to files to 'storage servers' of any supported platform.
>
> At the same time, user level processes on 'clients' access the system as
> if it was an actual file system.
>
> This enables one to have Linux clients that run say samba to export the
> files to Windows clients but the actual files are kept on OpenSolaris
> servers on zfs. Should the Linux clients all go down, the Windows
> clients could still access the files on the OpenSolaris servers via samba.

I'm having trouble finding any real information about how (and how well)
this works and I'd like to know if it would be suitable for a backuppc
storage archive which generates millions of hardlinks. Does it deal
with hardlinks spanning backend storage servers transparently? And can
it replicate efficiently enough to have remote copies?

--
Les Mikesell
lesmikesell@gmail.com
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Old 02-09-2010, 03:21 PM
Rudi Ahlers
 
Default Using (was: Announcing) Gluster Storage Platform

On Wed, Dec 16, 2009 at 6:13 PM, Les Mikesell <lesmikesell@gmail.com> wrote:


Chan Chung Hang Christopher wrote:

> Alan McKay wrote:

>> On Tue, Dec 15, 2009 at 7:48 PM, Christopher Chan

>> <christopher.chan@bradbury.edu.hk> wrote:

>>> A cluster filesystem

>> OK, but you've just given me a circular definition.

>>

>>> When you do not need/want a cluster file system

>> and again ...

>>

>

> Okay, a cluster/distributed file system that does not have its own on

> disk format. It makes use of whatever existing filesystem there is for

> actual storage and allows you to replicate files/load balance requests

> to files to 'storage servers' of any supported platform.

>

> At the same time, user level processes on 'clients' access the system as

> if it was an actual file system.

>

> This enables one to have Linux clients that run say samba to export the

> files to Windows clients but the actual files are kept on OpenSolaris

> servers on zfs. Should the Linux clients all go down, the Windows

> clients could still access the files on the OpenSolaris servers via samba.



I'm having trouble finding any real information about how (and how well)

this works and I'd like to know if it would be suitable for a backuppc

storage archive which generates millions of hardlinks. *Does it deal

with hardlinks spanning backend storage servers transparently? *And can

it replicate efficiently enough to have remote copies?



--

* Les Mikesell

* *lesmikesell@gmail.com

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Has anyone implemented, or used GlusterFS yet? What is your viewpoint on it?
--
Kind Regards
Rudi Ahlers
SoftDux

Website: http://www.SoftDux.com


Technical Blog: http://Blog.SoftDux.com
Office: 087 805 9573
Cell: 082 554 7532

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