Comments on: GlusterFS Continued http://www.pc-hq.net/2008/10/glusterfs-continued/ Linux, Windows, Whatever... Tue, 07 Oct 2008 19:41:38 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Tony W. http://www.pc-hq.net/2008/10/glusterfs-continued/comment-page-1/#comment-6 Tony W. Tue, 07 Oct 2008 19:41:38 +0000 http://www.pc-hq.net/?p=201#comment-6 Agreed, interesting and complex. I had read about a possible Raid6 setup down the road. Very excited about that. I like the simplicity of GlusterFS from what I've read so far. But again, same as I posted earlier, the documentation listed on their site is a little vague. I'd like to dive into it as much as I can so I will be able to post a howto of my own. Agreed, interesting and complex.
I had read about a possible Raid6 setup down the road. Very excited about that.
I like the simplicity of GlusterFS from what I’ve read so far. But again, same as I posted earlier, the documentation listed on their site is a little vague. I’d like to dive into it as much as I can so I will be able to post a howto of my own.

]]> By: Onyxenator http://www.pc-hq.net/2008/10/glusterfs-continued/comment-page-1/#comment-5 Onyxenator Tue, 07 Oct 2008 19:07:09 +0000 http://www.pc-hq.net/?p=201#comment-5 Wel yes, the original poster had a different setup, but that gave me the idea of the "networked raid5"-like system. I thought I found the holy grale, and it took me days to see I was wrong. So with glusterfs you need the extra storage for every extra copy you want to make, but I still think glusterfs is a great system. A raid6 like translator is on the roadmap btw. If you don't need the performance, and want a more efficient usage of the available storage space in a redundant way, have a look at cleversafe.org. I never tested it, and it seems a lot more complex to setup, but it looks very interesting. Wel yes, the original poster had a different setup, but that gave me the idea of the “networked raid5″-like system. I thought I found the holy grale, and it took me days to see I was wrong.
So with glusterfs you need the extra storage for every extra copy you want to make, but I still think glusterfs is a great system. A raid6 like translator is on the roadmap btw.

If you don’t need the performance, and want a more efficient usage of the available storage space in a redundant way, have a look at cleversafe.org. I never tested it, and it seems a lot more complex to setup, but it looks very interesting.

]]> By: Tony W. http://www.pc-hq.net/2008/10/glusterfs-continued/comment-page-1/#comment-4 Tony W. Tue, 07 Oct 2008 18:01:45 +0000 http://www.pc-hq.net/?p=201#comment-4 Looking at that list doesn't tell me much. The setup the guy had was similar to the striping I have now, not a redundant FS, just striped across all drives. I guess the only option would be to have something similar to Raid1. Not something I really want since I want to keep as much data as I can. :( I guess I'm getting confused on what this example actually implies. http://www.gluster.org/docs/index.php/Unify_over_AFR Again that's one reason why I want to setup a simple server for testing. Get to see it in action. Looking at that list doesn’t tell me much. The setup the guy had was similar to the striping I have now, not a redundant FS, just striped across all drives. I guess the only option would be to have something similar to Raid1. Not something I really want since I want to keep as much data as I can. :(
I guess I’m getting confused on what this example actually implies.
http://www.gluster.org/docs/index.php/Unify_over_AFR
Again that’s one reason why I want to setup a simple server for testing. Get to see it in action.

]]> By: Tony W. http://www.pc-hq.net/2008/10/glusterfs-continued/comment-page-1/#comment-3 Tony W. Tue, 07 Oct 2008 17:22:07 +0000 http://www.pc-hq.net/?p=201#comment-3 Thank you for the comment! Well that's one of the main reasons why I want to do some test runs to see exactly how it works. I only started reading up about this on Friday afternoon and prolonged setup until today. I've been busy all morning and haven't had a chance to check it out any more...that and I need to find a spare drive somewhere. All in all, you are probably right. Thank you for the comment!
Well that’s one of the main reasons why I want to do some test runs to see exactly how it works. I only started reading up about this on Friday afternoon and prolonged setup until today. I’ve been busy all morning and haven’t had a chance to check it out any more…that and I need to find a spare drive somewhere. All in all, you are probably right.

]]> By: Onyxenator http://www.pc-hq.net/2008/10/glusterfs-continued/comment-page-1/#comment-2 Onyxenator Tue, 07 Oct 2008 16:44:56 +0000 http://www.pc-hq.net/?p=201#comment-2 hihi, you make the same mistake I made about a year ago. It is not correct that it's a raid5-like setup an have 66% usable space. If you are like me, you will say I am wrong, and try to prove it. I had long discussions on IRC to try to prove this. Anyways, it really took me some time to figure out I was wrong. In short: afr of 2 volumes writes every file twice, so it uses double of its space, so it halves the capacity of the total volume You can see this thread from the mailing list: http://lists.gnu.org/archive/html/gluster-devel/2007-11/msg00128.html The really big discussion must live in an IRC log somewhere ;-) hihi, you make the same mistake I made about a year ago.
It is not correct that it’s a raid5-like setup an have 66% usable space.
If you are like me, you will say I am wrong, and try to prove it. I had long discussions on IRC to try to prove this. Anyways, it really took me some time to figure out I was wrong.

In short: afr of 2 volumes writes every file twice, so it uses double of its space, so it halves the capacity of the total volume

You can see this thread from the mailing list:
http://lists.gnu.org/archive/html/gluster-devel/2007-11/msg00128.html

The really big discussion must live in an IRC log somewhere ;-)

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