i2o DPT RAID driver broken. Known bug in 2.6.20. Patch available.

[Nick_Hill]

Binary package hint: linux-image-2.6-686

1)Install Feisty and updates.
2)Install Adaptec or other DPT based SCSI RAID controller.
3)Create RAID drive in BIOS
4)Boot system
5)Check dmesg | grep i2o
or do
fdisk /dev/i2o/hda
>Unable to read /dev/i2o/hda
dmesg | tail

You will see:
[ 537.586625] Buffer I/O error on device i2o/hda, logical block 0
[ 537.586632] Buffer I/O error on device i2o/hda, logical block 1
[ 537.586635] Buffer I/O error on device i2o/hda, logical block 2
[ 537.586637] Buffer I/O error on device i2o/hda, logical block 3

This is identical to the bug, and the patch shown at:
http://<email address hidden>/msg136638.html

I2o RAID arrays and other DPT based controllers are unusable with Feisty.

Apparently, this bug has been patched in official kernel 2.6.21. Can we have the next Feisty kernel update patched with a fix for I2o please? This is a complete stopper for many systems.

[Colin Watson (cjwatson)]

The task on linux-source-2.6.20 is fine; we don't need one on linux-meta as well.

[Brian Murray (brian-murray)]

I am assigning this bug to the 'ubuntu-kernel-team' per their bug policy. For future reference you can learn more about their bug policy at https://wiki.ubuntu.com/KernelTeamBugPolicies .

[Launchpad Janitor (janitor)]

Beginning with the Hardy Heron 8.04 development cycle, all open Ubuntu kernel bugs need to be reported against the "linux" kernel package. We are automatically migrating this bug to the new "linux" package. However, development has already began for the upcoming Intrepid Ibex 8.10 release. It would be helpful if you could test the upcoming release and verify if this is still an issue - http://www.ubuntu.com/testing . If the issue still exists, please update this report by changing the Status of the "linux" task from "Incomplete" to "New". We appreciate your patience and understanding as we make this transition. Thanks!

[Leann Ogasawara (leannogasawara)]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

[Nick_Hill (nick-nickhill)]

I have tried an I2o device on an Ubuntu 8.04.1 and have not been able to reproduce the bug. It therefore appears the upstream patch has found it's way into the Ubuntu 2.6.24 kernel.

[Nick_Hill (nick-nickhill)]

Not reproducible in 2.6.24. Fix appears to have found it's way from upstream into Ubuntu stock kernel.

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.