Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-15 Thread Ross Walker
On Apr 15, 2011, at 4:48 AM, Rudi Ahlers wrote: > > > On Fri, Apr 15, 2011 at 10:40 AM, Ljubomir Ljubojevic wrote: > John R Pierce wrote: > > On 04/14/11 5:43 PM, Christopher Chan wrote: > >> On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: > >>> On 04/14/11 7:44 AM, Christopher Chan w

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-15 Thread Christopher Chan
On Friday, April 15, 2011 03:59 PM, John R Pierce wrote: > On 04/14/11 5:43 PM, Christopher Chan wrote: >> On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: >>> On 04/14/11 7:44 AM, Christopher Chan wrote: Now, if OpenIndiana resists using illumos... >>> openindiana is under the Illumos

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-15 Thread Rudi Ahlers
On Fri, Apr 15, 2011 at 10:40 AM, Ljubomir Ljubojevic wrote: > John R Pierce wrote: > > On 04/14/11 5:43 PM, Christopher Chan wrote: > >> On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: > >>> On 04/14/11 7:44 AM, Christopher Chan wrote: > Now, if OpenIndiana resists using illumos...

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-15 Thread Ljubomir Ljubojevic
John R Pierce wrote: > On 04/14/11 5:43 PM, Christopher Chan wrote: >> On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: >>> On 04/14/11 7:44 AM, Christopher Chan wrote: Now, if OpenIndiana resists using illumos... >>> openindiana is under the Illumos project umbrella. They aren't goin

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-15 Thread John R Pierce
On 04/14/11 5:43 PM, Christopher Chan wrote: > On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: >> On 04/14/11 7:44 AM, Christopher Chan wrote: >>> Now, if OpenIndiana resists using illumos... >> openindiana is under the Illumos project umbrella. They aren't going to >> use anything else.

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Christopher Chan
On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: > On 04/14/11 7:44 AM, Christopher Chan wrote: >> Now, if OpenIndiana resists using illumos... > > openindiana is under the Illumos project umbrella. They aren't going to > use anything else. Eh? I was under the impression that they are sep

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Christopher Chan
On Thursday, April 14, 2011 11:19 PM, Ray Van Dolson wrote: > On Thu, Apr 14, 2011 at 10:44:00PM +0800, Christopher Chan wrote: >> On Thursday, April 14, 2011 10:11 PM, Ray Van Dolson wrote: >>> On Thu, Apr 14, 2011 at 10:07:55PM +0800, Emmanuel Noobadmin wrote: On 4/14/11, John R Pierce wro

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread John R Pierce
On 04/14/11 7:44 AM, Christopher Chan wrote: > Now, if OpenIndiana resists using illumos... openindiana is under the Illumos project umbrella. They aren't going to use anything else. someone suggested Solaris Express, that has no patches or updates unless you subscribe to annual support at sev

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Ray Van Dolson
On Thu, Apr 14, 2011 at 10:44:00PM +0800, Christopher Chan wrote: > On Thursday, April 14, 2011 10:11 PM, Ray Van Dolson wrote: > > On Thu, Apr 14, 2011 at 10:07:55PM +0800, Emmanuel Noobadmin wrote: > >> On 4/14/11, John R Pierce wrote: > >>> since this is the centos list, I really didn't want to

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Christopher Chan
On Thursday, April 14, 2011 10:07 PM, Emmanuel Noobadmin wrote: > On 4/14/11, John R Pierce wrote: >> since this is the centos list, I really didn't want to suggest this, but >> if I was building a 20 or 40TB or whatever storage server, I do believe >> I'd be strongly consider using Solaris, or on

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Christopher Chan
On Thursday, April 14, 2011 10:11 PM, Ray Van Dolson wrote: > On Thu, Apr 14, 2011 at 10:07:55PM +0800, Emmanuel Noobadmin wrote: >> On 4/14/11, John R Pierce wrote: >>> since this is the centos list, I really didn't want to suggest this, but >>> if I was building a 20 or 40TB or whatever storage

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Ray Van Dolson
On Thu, Apr 14, 2011 at 10:07:55PM +0800, Emmanuel Noobadmin wrote: > On 4/14/11, John R Pierce wrote: > > since this is the centos list, I really didn't want to suggest this, but > > if I was building a 20 or 40TB or whatever storage server, I do believe > > I'd be strongly consider using Solaris

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Emmanuel Noobadmin
On 4/14/11, John R Pierce wrote: > since this is the centos list, I really didn't want to suggest this, but > if I was building a 20 or 40TB or whatever storage server, I do believe > I'd be strongly consider using Solaris, or one of its variants like > OpenIndiana, with ZFS. > > ZFS was engineere

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-14 Thread Christopher Chan
On Thursday, April 14, 2011 01:51 PM, John R Pierce wrote: > On 04/13/11 9:51 PM, Emmanuel Noobadmin wrote: >> I'm was stuck trying to decide whether to go for the cheaper RAID 5 >> setup and possibly getting killed by the IOPS penalty and the risk >> associated with rebuild time, or figure out a w

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-13 Thread John R Pierce
On 04/13/11 9:51 PM, Emmanuel Noobadmin wrote: > I'm was stuck trying to decide whether to go for the cheaper RAID 5 > setup and possibly getting killed by the IOPS penalty and the risk > associated with rebuild time, or figure out a way to use the > recommended RAID 10 setup with a smaller usable

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-13 Thread Emmanuel Noobadmin
On 4/14/11, Ross Walker wrote: > You can't expand a mdraid raid0. > > I believe you can expand a mdraid raid10,5,6, but not raid0. That was what I thought previously when looking into this and weighing the pros/cons of using RAID 10 vs RAID 5. But earlier this week, from the 40TB Filesystem thre

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-13 Thread Ross Walker
On Wed, Apr 13, 2011 at 11:19 AM, Emmanuel Noobadmin wrote: > On 4/13/11, Rudi Ahlers wrote: >>> to expand the array :) >> >> I haven't had problems doing it this way yet. > > I finally figured out my mistake creating the raid devices and got a > working RAID 0 on two RAID 1 arrays. But I wasn't

[CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

2011-04-13 Thread Emmanuel Noobadmin
On 4/13/11, Rudi Ahlers wrote: >> to expand the array :) > > I haven't had problems doing it this way yet. I finally figured out my mistake creating the raid devices and got a working RAID 0 on two RAID 1 arrays. But I wasn't able to add another RAID 1 component to the array with the error mdadm