Thanks Chris for the detailed response!
I couldn't understand the complex sentence about XFS and was almost
convinced that XFS might offer a new way to spread across multiple disks.
And in this case it's mainly me and not you.
Now I understand how a md linear/concat array can be exploited
On Mon, Feb 16, 2015 at 6:47 AM, Eliezer Croitoru elie...@ngtech.co.il wrote:
I am unsure I understand what you wrote.
XFS will create multiple AG's across all of those
devices,
Are you comparing md linear/concat to md raid0? and that the upper level XFS
will run on top them?
Yes to the
On Mon, Feb 16, 2015 at 10:21 AM, Chris Murphy li...@colorremedies.com wrote:
On Mon, Feb 16, 2015 at 6:47 AM, Eliezer Croitoru elie...@ngtech.co.il
wrote:
I am unsure I understand what you wrote.
XFS will create multiple AG's across all of those
devices,
Are you comparing md
On Mon, Feb 16, 2015 at 10:48 AM, Eliezer Croitoru elie...@ngtech.co.il wrote:
Thanks Chris for the detailed response!
I couldn't understand the complex sentence about XFS and was almost
convinced that XFS might offer a new way to spread across multiple disks.
It's not new in XFS, it's
On 16/02/2015 22:29, Chris Murphy wrote:
The other plus is that growing linear arrays is cake. They just get
added to the end of the concat, and xfs_growfs is used. Takes less
than a minute. Whereas md raid0 grow means converting to raid4, then
adding the device, then converting back to raid0.
On 16/02/2015 10:04, Chris Murphy wrote:
This is a recent benchmarking using Postmark which supposedly
simulates mail servers. XFS stacks up a bit better than ext4.
http://www.phoronix.com/scan.php?page=articleitem=linux-3.19-ssd-fsnum=3
A neat trick for big busy mail servers that comes up on
On Mon, Feb 16, 2015 at 12:07 AM, Michael Schumacher
michael.schumac...@pamas.de wrote:
Btw., are you sure you want to use XFS for a mail server? I made some
tests about a year ago and found that EXT4 is by the factor 10 faster
compared to XFS. The tests I performed were using the maildir
Everyone,
I am putting together a new mail server for our firm using a SuperMicro
with Centos 7.0. When performed the install of the os, I put 16 gigs of
memory in the wrong slots on the mother board which caused the
SuperMicro to recognize 8 gigs instead of 16 gigs. When I installed
Centos
You can grow xfs or create more swap on filesystem files (swap in file)
15.2.2015 17.50 kirjoitti Gregory P. Ennis po...@pomec.net:
Everyone,
I am putting together a new mail server for our firm using a SuperMicro
with Centos 7.0. When performed the install of the os, I put 16 gigs of
Everyone,
I am putting together a new mail server for our firm using a SuperMicro
with Centos 7.0. When performed the install of the os, I put 16 gigs of
memory in the wrong slots on the mother board which caused the
SuperMicro to recognize 8 gigs instead of 16 gigs. When I installed
Centos
Hey Gregory,
I assume you have the issue with a swap partition which is harder to
modify then a swap file.
You can always add\use another swap file instead of a partition.
This article describes what you will need\want:
http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/
and just
On 15.02.2015 16:49, Gregory P. Ennis wrote:
Everyone,
I am putting together a new mail server for our firm using a SuperMicro
with Centos 7.0. When performed the install of the os, I put 16 gigs of
memory in the wrong slots on the mother board which caused the
SuperMicro to recognize 8
I'd like to think you will want to avoid the use of swap at almost all
costs because it'll slow the system down by a lot. So really you don't
need 1:1 for a server that isn't using suspend to disk. You only need
enough swap so that things can chug (slowly) without totally
imploding, giving you
On 2015-02-15, Gregory P. Ennis po...@pomec.net wrote:
I am putting together a new mail server for our firm using a SuperMicro
with Centos 7.0. When performed the install of the os, I put 16 gigs of
memory in the wrong slots on the mother board which caused the
SuperMicro to recognize 8 gigs
On Sun, 2015-02-15 at 17:37 -0800, Keith Keller wrote:
On 2015-02-15, Gregory P. Ennis po...@pomec.net wrote:
I am putting together a new mail server for our firm using a SuperMicro
with Centos 7.0. When performed the install of the os, I put 16 gigs of
memory in the wrong slots on the
A neat trick for a server with less than idea memory requirement
compared to the storage it has, is a pile of swap on an SSD. Having
xfs_repair use swap on SSD is a lot faster than its fallback behavior
when memory is low and there's no swap. Whereas swapping to a HDD...
brutal.
Chris Murphy
Morning Gregory,
Sunday, February 15, 2015, 6:42:32 PM, you wrote:
I am putting together a new mail server for [...]
I am using the default xfs file system on the other partitions. Is
there a way to expand the swap file? If not, then is this problem
sufficiently bad enough for me to start
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