Hi List,

We're trying to set up a RAC environment, using:
  Oracle 9.2.0.6 64-bit
  SLES 9 SP3 64-bit
  2 x Dell PowerEdge 2800
  2 x HBA Emulex LP8000
  1 x HP StorageWorks RA4100
  Connection to storage throught FC switch

The used procedure:

1) - We installed the SusE Linux on the first machine. At the installation, Yast shows two disks, the internal disk (/dev/sda) and the LUN created by our vendor before we get the storage (/dev/sdb). We installed the system into /dev/sda, leaving the /dev/sdb for use with RAC

2) - After system installation, we made tests into the storage. First, fdisk /dev/sdb to create a single partition. At this moment, we can see lots of I/O errors over the storage (but no erros reported by fdisk). We created a huge tar file into the storage and, again, lots of I/O errors in the system console, but no erros reported by tar utility.

3) - After that, we installed SP3. At the boot, we can see the new Emulex driver is loaded but /dev/sdb is not present anymore. Trying to fdisk /dev/sdb, we got "unable to open device /dev/sdb).

4) - Then, we download the latest Emulex driver from <http://www.emulex.com/> www.emulex.com, and the HBAnyware utility. The problem is the same: we can see messages from driver in the boot phase (there is no error messages), but the /dev/sdb device is not available.

5) - We used HBAnyware utility (from Emulex) to get some more information about the HBA. Throught this utility, we can see all the hardware components in a way similar to this:

  <Host Name>
       + - Emulex LP 8000  
          + <one WWN address, from Storage RA4100 I think>
            + LUN0

We can conclude, from the information above, the hardware connections are OK. The question is: why can't we see the LUNS into Linux box after applying the SP3? Ins't Linux compatible with StorageWorks RA4100? Is it necessary to install any aditional packages?

Every input is welcome.

Lookinf for your help.

Thanks,


Anderson