topic Re: FC/HBA change my SCSI divice on Red hat 4.xx in Operating System - Linux

FC/HBA change my SCSI divice on Red hat 4.xx

Isaac_4 — Wed, 07 May 2008 18:10:48 GMT

I Has instaled the HBA/FC 2462 Qlogic , after the instalation the Linux show me with the command Fdisk the following:

sda Lun from EVA (Before sda asigne to the boot device in BL860c internal Disk)
Now
sdb for Boot device

While the FC/HBA rename my divice name ?

Pls Helpme

Re: FC/HBA change my SCSI divice on Red hat 4.xx

Steven Schweda — Wed, 07 May 2008 18:18:39 GMT

You might get better answers faster in a
Linux forum than you will in the VMS forum.

http://forums.itrc.hp.com/service/forums/familyhome.do?familyId=118

Re: FC/HBA change my SCSI divice on Red hat 4.xx

Bill Hall — Wed, 07 May 2008 20:04:32 GMT

Isaac,

I would expect that one of the "regular" contributors on either the Storage forum or the Servers/HP Bladesystems forum would better able help you than anyone here.

Bill

Re: FC/HBA change my SCSI divice on Red hat 4.xx

Ivan Ferreira — Thu, 08 May 2008 19:49:43 GMT

Linux will always change the device names depending of the detection order.

Before installing the HBA, the first detected disk was the internal.

After installing the HBA, the first detected disk was the SAN disk.

I'm not sure if you can change this behaviour because the detection order depends of the slot where is installed and hardware resources.

This is why Linux uses LABELS in fstab instead of device names. This is why UDEV allows you to create persistent names based on the UUID.

Re: FC/HBA change my SCSI divice on Red hat 4.xx

Armin Norouzi — Sun, 08 Jun 2008 11:37:45 GMT

Try these, one may help:
- Change FC HBA address in server's RBSU (Set a lower address than the storage contrller)
- You can also configure udev in your linux machine to change the order of your LUNs.