Any comments? If the read balance is still part of our long term goal, I can help to do some development. <div class="gmail_quote">On Fri, Jun 17, 2011 at 22:47, Feng Shuo <<a href="mailto:steve.shuo.feng@gmail.com">steve.shuo.feng@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">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 </blockquote></div> -- 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