RHEL 6 after boot primary partition shows /dev/sdb instead of /dev/sda

vipul_patel · 04-26-2011, 08:26 AM

Dear All Members,

I have query about RHEL 6 and additional IBM storage DS3200. When RHEL 6 System Installed on IBM Server SystemX 3650 M2 took /dev/sda as primary partition when storage is attached and reboot the system or as it is it shows /dev/sdb partition instead of /dev/sda.

If we restart server without storage it takes regular /dev/sda partition after storage start it also takes regular partition of storage i.e. /dev/sdb.

But when both are restart together it would take /dev/sdb as primary partition. /dev/sda - Does not contain a vaild partition table error.

So what is the procedure to fix forcefully take regular partition by server as well as storage respectively.

Regards,
Vipul Patel

Ahmedabad

RHCE

AlucardZero · 04-26-2011, 09:48 AM

I don't totally understand what you wrote, but yes, device names can change on reboot. This is why you should LABEL filesystem and mount them by label in /etc/fstab, OR mount them by UUID or path (see the /dev/disk/... subfolders).