Re: [CentOS] Centos 7 RAID tutorial?

2014-09-11 Thread Sven Kieske
On 11.09.2014 01:27, Scott Robbins wrote: In contrast, the CentOS wiki article, if running CentOS 5 or 6, gives an easy to follow guide, complete with commands one might actually type. (At least some of the instructions don't seem to work with CentOS 7 though) Did you read the topic of this

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-11 Thread Scott Robbins
On Thu, Sep 11, 2014 at 09:48:36PM +0200, Sven Kieske wrote: On 11.09.2014 01:27, Scott Robbins wrote: In contrast, the CentOS wiki article, if running CentOS 5 or 6, gives an easy to follow guide, complete with commands one might actually type. (At least some of the instructions don't

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-11 Thread Dave Stevens
Quoting Digimer li...@alteeve.ca: On 10/09/14 06:45 PM, Dave Stevens wrote: Quoting Digimer li...@alteeve.ca: On 10/09/14 05:35 PM, Eliezer Croitoru wrote: On 09/10/2014 02:33 AM, Digimer wrote: The problem with ZFS on linux is license related more than technical. It exists for ubutnu so

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-11 Thread Sven Kieske
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Thanks for the clarification and the link! No need to apologize, I tend to forget thinks myself from time to time. kind regards Sven -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.22 (MingW32)

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-11 Thread Scott Robbins
On Fri, Sep 12, 2014 at 01:03:17AM +0200, Sven Kieske wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Thanks for the clarification and the link! No need to apologize, I tend to forget thinks myself from time to time. Thanks for the understanding. :) Mental shorthand is a bad habit

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Eliezer Croitoru
On 09/10/2014 02:33 AM, Digimer wrote: The problem with ZFS on linux is license related more than technical. It exists for ubutnu so I can use it from a ppa for testing. I would like to understand more about this license issue. If you can sound me with more about it will help me understand the

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Digimer
On 10/09/14 05:35 PM, Eliezer Croitoru wrote: On 09/10/2014 02:33 AM, Digimer wrote: The problem with ZFS on linux is license related more than technical. It exists for ubutnu so I can use it from a ppa for testing. I would like to understand more about this license issue. If you can sound me

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Dave Stevens
Quoting Digimer li...@alteeve.ca: On 10/09/14 05:35 PM, Eliezer Croitoru wrote: On 09/10/2014 02:33 AM, Digimer wrote: The problem with ZFS on linux is license related more than technical. It exists for ubutnu so I can use it from a ppa for testing. I would like to understand more about this

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Eliezer Croitoru
On 09/11/2014 01:27 AM, Digimer wrote: On 10/09/14 05:35 PM, Eliezer Croitoru wrote: On 09/10/2014 02:33 AM, Digimer wrote: The problem with ZFS on linux is license related more than technical. It exists for ubutnu so I can use it from a ppa for testing. I would like to understand more about

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Sven Kieske
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 11.09.2014 00:45, Dave Stevens wrote: Dear All, This list reminds me of the wizards in the Terry Pratchett novels - confronted with a need to take action they would by far rather discuss all possibilities, however remote, than address the

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Digimer
On 10/09/14 06:45 PM, Dave Stevens wrote: Quoting Digimer li...@alteeve.ca: On 10/09/14 05:35 PM, Eliezer Croitoru wrote: On 09/10/2014 02:33 AM, Digimer wrote: The problem with ZFS on linux is license related more than technical. It exists for ubutnu so I can use it from a ppa for testing.

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-10 Thread Scott Robbins
On Thu, Sep 11, 2014 at 01:00:02AM +0200, Sven Kieske wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 11.09.2014 00:45, Dave Stevens wrote: Dear All, This list reminds me of the wizards in the Terry Pratchett novels - confronted with a need to take action they would by far

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-09 Thread SilverTip257
On Mon, Sep 8, 2014 at 2:58 PM, Dave Stevens g...@uniserve.com wrote: This is a pretty interesting discussion but has not revealed an on-line tutorial. Anyone? Dave Use mdadm commands. ~]$ man mdadm I don't follow any one tutorial or guide in particular, I consult the mdadm manpage in

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-09 Thread Eliezer Croitoru
On 09/08/2014 10:00 PM, Andrew Holway wrote: +1 Try ZFS http://zfsonlinux.org/ How stable is it on linux? Eliezer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-09 Thread Digimer
On 09/09/14 05:36 PM, Eliezer Croitoru wrote: On 09/08/2014 10:00 PM, Andrew Holway wrote: +1 Try ZFS http://zfsonlinux.org/ How stable is it on linux? Eliezer The problem with ZFS on linux is license related more than technical. -- Digimer Papers and Projects: https://alteeve.ca/w/ What

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-09 Thread Ian Pilcher
On 09/07/2014 09:19 PM, Dave Stevens wrote: I want to set up a new CentOS install using version 7 and would like to experiment with various RAID levels. Anyone care to point out a tutorial? That's a very broad question, so the responses thus far shouldn't be surprising. I suggest reading:

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-09 Thread Keith Keller
On 2014-09-09, Eliezer Croitoru elie...@ngtech.co.il wrote: How stable is it on linux? My own experience is very limited, but I have heard from a handful of reliable sources who are very happy with ZFS. As Digimer noted, much of the challenge is in the licensing, not a technical issue. ZFS has

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-08 Thread John R Pierce
On 9/7/2014 8:09 PM, Digimer wrote: I'm not so familiar with software RAID, but I would be surprised if there isn't a way to force write-through caching. If this is possible, then Valeri's concern can be addressed (at the cost of performance). software raid on enterprise grade JBOD *is*

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-08 Thread Dave Stevens
Quoting Digimer li...@alteeve.ca: On 07/09/14 11:01 PM, Keith Keller wrote: On 2014-09-08, Valeri Galtsev galt...@kicp.uchicago.edu wrote: Even more: system failure or power loss is more likely to destroy all data on software RAID than on a single drive when there is a lot of IO present (to

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-08 Thread Andrew Holway
Raid only protects against one specific sort of failure, where an entire disk drive fails. It doesn't protect against data corruption, or system failure, or software failure or any other catastrophes. +1 Try ZFS http://zfsonlinux.org/ ___

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-08 Thread Andrew Holway
A UPS is certainly better than nothing, Unless your using ZFS then nothing is perfectly ok. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

[CentOS] Centos 7 RAID tutorial?

2014-09-07 Thread Dave Stevens
I want to set up a new CentOS install using version 7 and would like to experiment with various RAID levels. Anyone care to point out a tutorial? TIA Dave -- We hang petty thieves and appoint great ones to office -- Aesop ___ CentOS

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-07 Thread John R Pierce
On 9/7/2014 7:19 PM, Dave Stevens wrote: I want to set up a new CentOS install using version 7 and would like to experiment with various RAID levels. Anyone care to point out a tutorial? how many drives do you have for this experiment? whats the target usecase for the file systems on the

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-07 Thread Valeri Galtsev
On Sun, September 7, 2014 9:30 pm, John R Pierce wrote: On 9/7/2014 7:19 PM, Dave Stevens wrote: I want to set up a new CentOS install using version 7 and would like to experiment with various RAID levels. Anyone care to point out a tutorial? how many drives do you have for this experiment?

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-07 Thread Keith Keller
On 2014-09-08, Valeri Galtsev galt...@kicp.uchicago.edu wrote: Even more: system failure or power loss is more likely to destroy all data on software RAID than on a single drive when there is a lot of IO present (to the best of my understanding, loss of cache software RAID is using is more

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-07 Thread Digimer
On 07/09/14 10:43 PM, Valeri Galtsev wrote: On Sun, September 7, 2014 9:30 pm, John R Pierce wrote: On 9/7/2014 7:19 PM, Dave Stevens wrote: I want to set up a new CentOS install using version 7 and would like to experiment with various RAID levels. Anyone care to point out a tutorial? how

Re: [CentOS] Centos 7 RAID tutorial?

2014-09-07 Thread Digimer
On 07/09/14 11:01 PM, Keith Keller wrote: On 2014-09-08, Valeri Galtsev galt...@kicp.uchicago.edu wrote: Even more: system failure or power loss is more likely to destroy all data on software RAID than on a single drive when there is a lot of IO present (to the best of my understanding, loss