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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 06-17-2011, 02:47 PM
Feng Shuo
 
Default Read balance of dm-raid1

Hi all,

I installed RHEL 6 and found that its dm-raid1 only used one disk for all reads. In RHEL5, the reads should be balanced between all the disks. Is there any special concerns for disabling that? Data safe or consistency?



I googled and found there should be a read balance patch. Is that out of maintained in new kernels?
--
Feng Shuo
Tel: (86)10-59851155-2116
Fax: (86)10-59851155-2008
Tianjin Zhongke Blue Whale Information Technologies Co., Ltd


Postcode 100080
10th Floor, Tower A, The GATE building, No. 19 Zhong-guan-cun Avenue
Haidian District, Beijing

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dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
 
Old 06-22-2011, 03:26 AM
Feng Shuo
 
Default Read balance of dm-raid1

Any comments? If the read balance is still part of our long term goal, I can help to do some development.

On Fri, Jun 17, 2011 at 22:47, Feng Shuo <steve.shuo.feng@gmail.com> wrote:


Hi all,

I installed RHEL 6 and found that its dm-raid1 only used one disk for all reads. In RHEL5, the reads should be balanced between all the disks. Is there any special concerns for disabling that? Data safe or consistency?




I googled and found there should be a read balance patch. Is that out of maintained in new kernels?
--
Feng Shuo
Tel: (86)10-59851155-2116
Fax: (86)10-59851155-2008


Tianjin Zhongke Blue Whale Information Technologies Co., Ltd

Postcode 100080
10th Floor, Tower A, The GATE building, No. 19 Zhong-guan-cun Avenue
Haidian District, Beijing



--
Feng Shuo
Tel: (86)10-59851155-2116
Fax: (86)10-59851155-2008
Tianjin Zhongke Blue Whale Information Technologies Co., Ltd
Postcode 100080
10th Floor, Tower A, The GATE building, No. 19 Zhong-guan-cun Avenue


Haidian District, Beijing

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
 

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