[Bug 575146] [NEW] SCSI Scan order wrong

[Launchpad Bug Tracker]

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During a fresh installation of Ubuntu 10.04, I noticed that the Linux
kernel is scanning and registering the hard drives incorrectly.

In my Dell Precision workstation 690, I have 4 500GB SATA hard drives
configured in two RAID 1 sets.

/proc/scsi/scsi shows the following:

Host: scsi8 Channel: 01 Id: 02 Lun: 00
  Vendor: Dell     Model: VIRTUAL DISK     Rev: 1028
  Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi8 Channel: 01 Id: 00 Lun: 00
  Vendor: Dell     Model: VIRTUAL DISK     Rev: 1028
  Type:   Direct-Access                    ANSI  SCSI revision: 05


Id: 00 Lun: 00 is showing as /dev/sdb
Id: 02 Lun: 00 is showing as /dev/sda

This caused two problems during the install. One when I configured my
boot partition, I had to set it to /dev/sdb, and two Grub failed to
install to /dev/sdb during the install. I had to manually install grub
into /dev/sdb before I got a bootable system.

I can provide what ever logs you need to debug this.
Presently my system is bootable, but still is showing the same wrong scsi scan order.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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SCSI Scan order wrong
https://bugs.edge.launchpad.net/bugs/575146
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