Description of problem: A raid1 set is created on an x306 across two scsi disks using the onboard adaptec controller. When the OS is installed it sees two disks when there is only one RAID1 Logical drive Version-Release number of selected component (if applicable): RHEL3AS QU3 How reproducible: Always Steps to Reproduce: 1.Configure RAID1 set via BIOS or serveraid 2.Install RHEL3 via CDs 3.OS sees 2 separate disks Actual results: 2 disks Expected results: 1 RAID 1 disk Additional info: Installed on an IBM x306 with onboard Adaptec Raid SCSI
ServeRAID 7e is Adaptec HostRAID, as in not a real raid. Requires drivers from Adaptec AFAIK. I suggest you ditch HostRAID and use linux's software raid.
This is a major problem. Please increase the priority and fix this bug in Redhat.
As indicated in comment #1, this adapter implements HostRAID. HostRAID allows you to set up the RAID device in the BIOS or serveraid utility, and then use a special driver provided by Adaptec (through IBM) to perform the actual RAID I/O in the driver software. Red Hat does not ship this driver because it has not been accepted by the upstream community. If you want to use this approach, you might take a look at: http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-55041 to get started. Another alternative, as recommended in comment #1, is to simply not use the HostRAID feature of the BIOS and the special driver. In this case you will see the individual disks configured when you boot Linux. Now you can use linux's software RAID, like md, to implement the RAID. Some people have found that this performs as well or better that the HostRAID method, since both are done in software. I am closing this BZ, since there appears to be no plan to get the HostRAID accepted upstream.