From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040116 Description of problem: Currently, the mainline kernel (and therefore 2.6.8, which the RHEL 4 kernel is based on) do not correctly perform raid1 read retry. I posted a patch to linux-raid on Sept 15 to fix this (http://marc.theaimsgroup.com/?l=linux-raid&m=109527014728404&w=2). Neil Brown has confirmed the problem and just yesterday posted an expanded patch (including the fix for raid10 also): description: http://marc.theaimsgroup.com/?l=linux-raid&m=109824318228668&w=2 patch: http://marc.theaimsgroup.com/?l=linux-raid&m=109824318202358&w=2 (My version of the patch, which applies to the RHEL4 kernel, and which is basically identical to Neil's patch, is attached). Version-Release number of selected component (if applicable): kernel-2.6.8-1.528.2.10 How reproducible: Always Steps to Reproduce: 1. create md/raid1 array 2. fail the second drive while doing reads to the array Actual Results: read retry will be attempted but will always fail -- additionally the driver is unable to recover from the situation Expected Results: read retry should succeed Additional info:
Created attachment 105507 [details] raid1 bio clone on read error
fixed in cvs
Patch is indeed present in 2.6.9-1.903_EL. Closing out.