topic Re: Mounting LUNs in RHEL 4 ... in Operating System - Linux

Mounting LUNs in RHEL 4 ...

skhan — Fri, 12 Sep 2008 08:13:35 GMT

Hi,

The RHEL 4 node is connected to HP MSA1000 Storage through switch.
I can see the luns in /proc/scsi/scsi file.
How to use/mount them or present the LUNs to Linux box?

Answers will be really appreciated by quick numbers.

Thanks

Re: Mounting LUNs in RHEL 4 ...

Ivan Ferreira — Fri, 12 Sep 2008 14:54:45 GMT

You must first check if you can see the disk with:

fdisk -l

The new disk will show that "it does not contain a valid partition table"

In the simple form, you must partition, create a file system, and mount it.

For example, if sdb is your new disk

Partition the disk:
fdisk /dev/sdb
n
p
1
ENTER
ENTER
w

Reload partition table:
partprobe

Create the file system:
mkfs -t ext3 /dev/sdb1
tune2fs -c 0 -m 0 -i 0 /dev/sdb1

Mount:

mkdir /mount_point
mount /dev/sdb1 /mount_point

If you can go further, you may use LVM, but requieres additional job and better understanding of the whole process.

Re: Mounting LUNs in RHEL 4 ...

skhan — Mon, 15 Sep 2008 06:48:12 GMT

Thanks Ivan Ferreira,

One more question?

how to auto mount the disk/mountpoint every os boot time?

Re: Mounting LUNs in RHEL 4 ...

Maaz — Tue, 16 Sep 2008 02:32:05 GMT

>Create the file system:
>mkfs -t ext3 /dev/sdb1
>tune2fs -c 0 -m 0 -i 0 /dev/sdb1

If you have followed Ivan Ferriera's above instructions, then open the terminal and open a file "fstab" which is located inside "/etc" directory, do

# gedit /etc/fstab
and append/add the following line
/dev/sdb1 /storage ext3 _netdev,rw,auto 1 2

save and exit from the file

Now create a directory,
# mkdir /storage
then
# mount -a

now execute
# df -hT
the last line of the output will be
/dev/sdb1 ext3 total_size used remaining percentage_used /storage

Now reboot the system, then run "df -hT" to check /dev/sdb1 is mounted on /storage.

Regards