RE: 4 Primary partitions limitations

If I understand this correctly, the luns will be presented a different 'disks' 
to Linux, such as /dev/sdb, /dev/sdc, etc. in such case, you can create up to 
four primary partitions in each of those 'disks'. As for ASM, since it uses raw 
devices on linux, you can create extended partitions and it works fine.

I have a RHEL4U6 with Oracle10g (10.2.0.4). Database is completely in ASM 
(except for a few testing datafiles) and disk configuration due to hardware 
restrictions is:

/dev/sda1               /boot
/dev/sda2               /
/dev/sda3               /var
/dev/sda4               extended
        /dev/sda5       /usr
        /dev/sda6       /var/lib/vmware(something)
        /dev/sda7       /u01
        /dev/sda8       raw
        /dev/sda9       raw
        /dev/sda10      swap

So, I guess this is all aimed to show that while you certainly *can* have 
extended partitions as ASM Diskgroups, it's not necessary to create extended 
partition on secondary disks.

HTH

Guillermo Alan Bort
DBA / DBA Main Team

EDS, an HP company
ITO
Arias 1851
Ciudad Autonoma de Buenos Aires (C1429DXC)
Argentina

Tel: +54 11 4704-3132
E-mail: guillermo.bort@xxxxxxx

We deliver on our commitments
so you can deliver on yours.


-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On 
Behalf Of hrishy
Sent: Friday, November 21, 2008 6:28 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: 4 Primary partitions limitations 

Hi

I am planning to use ASM and following diskgroups
1)DataDg
2)redoDg1
3)redoDg2
4)flashDg
I have 4 Usable Luns from the SAN that are presented to the host o/s which is 
rhel 5

I have already created 3 primary partitions on Linux 
1)MBR
2)root 
3)home
These partitions are under Linux LVM(Logical Volume Manager)

since BIOS supports only 4 primary partitions 
how can i use the 4 usable luns.

should i be creating a extended partitions on the LUNS that are presented to 
the host operating system

regards
Hrishy



      
--
http://www.freelists.org/webpage/oracle-l

Other related posts: