Red Hat Bugzilla – Bug 99369
Kernel hang when using 2 IDE controllers under software raid0
Last modified: 2007-04-18 12:55:44 EDT
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Description of problem:
I'm attempting to use 3 HDs under software raid0. My Maxtor 40GB HD is attached
to the ATA66 onboard controller on my K7V motherboard, and my two 20GB IBM HDs
are attached to the secondary Promise controller (PDC20268 - ATA100).
If I create a raid0 configuration consisting only of my two IBM HDs everything
is fine. When using all 3 HDs the kernel locks up so tightly that even
Alt+SysRq+T does not respond.
I have researched the problem for a couple weeks and the only work-around I
have found is using ide=nodma which is not a very desirable solution.
I will be glad to add additional info if it is needed. Just let me know.
Version-Release number of selected component (if applicable):
2.4.20-18.9 and 2.6.0
Steps to Reproduce:
1. The problem should be reproducable by using a primary and secondary IDE
controller under software raid0.
Actual Results: I have to reboot
Expected Results: Bonnie++ should have run to completion.
Bug also exist in your Severn beta
I have the same problem with 2 Promise cards, with 1 Promise card and a HPT302, with 4 disks. Common features of this bug appear to be Promise hardware with more than 1 channel in use at the same time and pdc20269_new driver. Additionally, I only had problems during write operations, reading from the array worked fine.
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases,
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/