Adding EMC clariion LUNs to RHEL 4. EMC powerpath installed. RHEL is using local disk for boot. This SAN is for storage.
))))) Using powerpath software to display devs from SAN. (((((
[root@jasco scsi]# powermt display dev=all
Pseudo name=emcpowerb
CLARiiON ID=APM04344461 [jasco]
Logical device ID=6003534353535062D32D454F11 [LUN 57]
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sdb SP A5 active alive 0 0
0 qla2xxx sdd SP B4 active alive 0 0
1 qla2xxx sdf SP A4 active alive 0 0
1 qla2xxx sdh SP B5 active alive 0 0
Pseudo name=emcpowera
CLARiiON ID=APM04344461 [jasco]
Logical device ID=6003534353535062D32D454F11 [LUN 56]
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sda SP A5 active alive 0 0
0 qla2xxx sdc SP B4 active alive 0 0
1 qla2xxx sde SP A4 active alive 0 0
1 qla2xxx sdg SP B5 active alive 0 0
))))) Fdisk shows the scis disk(a-h) paths on SAN that RHEL knows. none are partitions or have file systems yet. (((((
[root@jasco scsi]# fdisk -l
Disk /dev/sda: 21.4 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sda doesn't contain a valid partition table
Disk /dev/sdb: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 21.4 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdd: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde: 21.4 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdf: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdf doesn't contain a valid partition table
Disk /dev/sdg: 21.4 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sdg doesn't contain a valid partition table
Disk /dev/sdh: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdh doesn't contain a valid partition table
Disk /dev/emcpowerb: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/emcpowerb doesn't contain a valid partition table
Disk /dev/emcpowera: 21.4 GB, 21474836480 bytes
64 heads, 32 sectors/track, 20480 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/emcpowera doesn't contain a valid partition table
))))) Let's create a new partion with fdisk using one of the san paths. We use /dev/sdh for the
429GB LUN. (((((
[root@jasco scsi]# fdisk /dev/sdh
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
The number of cylinders for this disk is set to 52216.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): p
Disk /dev/sdh: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-52216, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-52216, default 52216):
Using default value 52216
Command (m for help): p
Disk /dev/sdh: 429.4 GB, 429496729600 bytes
255 heads, 63 sectors/track, 52216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdh1 1 52216 419424988+ 83 Linux
))))) Partition is created. Goto expert mode to align partition. (((((
Command (m for help): x
Expert command (m for help): b
Partition number (1-4): 1
New beginning of data (63-838850039, default 63): 128
Expert command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
))))) Create ext3 filesystem. After this mount the file system to the path or fstab if required. (((((
[root@jasco etc]# mke2fs -j /dev/emcpowera
Done.