Hi,
We have RHEL 2.1 AS which is connected toEMC SAN Box. My Server has already few San Lung Mounted . the Out Put of df –kh is
#df –kh
Filesystem Size Used Avail Use% Mounted on
/dev/sda8 2.0G 208M 1.6G 11% /
/dev/sda9 37G 3.0G 32G 9% /ArcLogs
/dev/sdb1 29G 59M 27G 1% /FreeDiskOld
/dev/sda1 100M 63M 36M 63% /boot/efi
/dev/sda7 2.0G 183M 1.6G 10% /home
/dev/sda4 2.0G 202M 1.6G 11% /opt
/dev/sda2 9.8G 4.8G 4.5G 52% /oracle
none 7.9G 0 7.9G 0% /dev/shm
/dev/sdb4 29G 5.9G 22G 21% /systemsp
/dev/sda6 2.0G 33M 1.8G 2% /tmp
/dev/sda3 9.8G 3.6G 5.7G 38% /usr
/dev/sda5 2.0G 231M 1.6G 13% /var
/dev/sdp1 9.8G 233M 9.1G 3% /Redo_logs
/dev/sdj1 20G 18G 1.1G 94% /Data1
/dev/sdv1 20G 11G 7.7G 59% /Data2
/dev/sdg1 20G 18G 1.6G 92% /Data3
/dev/sdy1 20G 17G 2.6G 86% /Data4
/dev/sdk1 9.8G 6.1G 3.3G 65% /Index1
/dev/sdu1 9.8G 8.3G 1.0G 89% /Index2
/dev/sdf1 9.8G 4.6G 4.8G 49% /Index3
/dev/sdz1 9.8G 7.6G 1.8G 81% /Index4
/dev/sdr1 9.8G 9.2G 167M 99% /temp
/dev/sdq1 9.8G 6.5G 2.8G 70% /system
/dev/sdn 9.8G 8.3G 1.0G 89% /Data5
/dev/sdo5 69G 32G 34G 48% /FreeDisk

here sda and sdb is my local disk. And remaining are my SAN Lungs. My question is why it is taking Device Drive randomly means it should take sda,sdb,sdc,sdd….ect.but is my case by default it linux is taking /dev/sdj,/dev/sdp,/dev/sdg etc randomly without sequences . just because of this .When I am going to add new Lung after reboot it is taking existing device drive i.e /dev/sdz1 and while booting linux in not able to mount that partition /dev/sdz1 i.e /Index4. now I totally stuck what should I do. This is my Production server. Temporarily I removed new added Lungs now my system is running. but I have to add new Lungs on this server. How can I use unused devices?
Any help or suggestion would be greatly appreciated.

Thanks in Advanced
Jaz

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