Following are the steps to permanently mount a SAN storage Disk on to a Linux Server.
Your system administrator will configure the Storage disk space and map it to the server, where you should use the below steps to mount it permanently on the server,
1. To list the disks that were mapped from SAN storage to the server use the below fdisk list command. Note that due to multipath rpm module not configured on the server it is showing four disks /dev/sda, /dev/sdb, /dev/sdc, /dev/sdd which is actually the one disk from the SAN device but showing four due to multipath fiber channels.
As general steps,
firstly Create the Physical Volume (PVCREATE)
then Volume Group (VGCREATE)
then Logical Volume (LVCREATE)
then format the Logical Volume using ext3 file system (MKFS)
and finally permanently mount the Logical Volume.
As general steps,
firstly Create the Physical Volume (PVCREATE)
then Volume Group (VGCREATE)
then Logical Volume (LVCREATE)
then format the Logical Volume using ext3 file system (MKFS)
and finally permanently mount the Logical Volume.
[root@edolraclin1 ~]# fdisk -l
Disk /dev/cciss/c0d0: 299.9 GB, 299966445568 bytes
255 heads, 32 sectors/track, 71798 cylinders
Units = cylinders of 8160 * 512 = 4177920 bytes
Device Boot Start End Blocks Id System
/dev/cciss/c0d0p1 * 1 25 101984 83 Linux
/dev/cciss/c0d0p2 26 16473 67107840 82 Linux swap / Solaris
/dev/cciss/c0d0p3 16474 71798 225726000 8e Linux LVM
Disk /dev/dm-0: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1: 123.7 GB, 123748745216 bytes
255 heads, 63 sectors/track, 15044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-1 doesn't contain a valid partition table
Disk /dev/sda: 858.9 GB, 858993459200 bytes
255 heads, 63 sectors/track, 104433 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sda doesn't contain a valid partition table
Disk /dev/sdb: 858.9 GB, 858993459200 bytes
255 heads, 63 sectors/track, 104433 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 858.9 GB, 858993459200 bytes
255 heads, 63 sectors/track, 104433 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdd: 858.9 GB, 858993459200 bytes
255 heads, 63 sectors/track, 104433 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdd doesn't contain a valid partition table
2. Using PVCREATE command, Create the physical volume from the mounted SAN storage disk
[root@edolraclin1 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/cciss/c0d0p3
VG Name VolGroup00
PV Size 215.27 GB / not usable 19.55 MB
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 6888
Free PE 0
Allocated PE 6888
PV UUID eBQiHf-sgd6-itbc-QJvu-pTMY-WhE9-mqtU2V
[root@edolraclin1 ~]# pvcreate /dev/sda
Physical volume "/dev/sda" successfully created
3. Using VGCREATE, create the Volume Group,
[root@edolraclin1 ~]# vgcreate VG_DB01 /dev/sdd
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdb not /dev/sda
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdc not /dev/sdb
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdd not /dev/sdc
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sda not /dev/sdd
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdb not /dev/sda
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdc not /dev/sdb
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdd not /dev/sdc
Volume group "VG_DB01" successfully created
[root@edolraclin1 ~]# vgdisplay
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdb not /dev/sda
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdc not /dev/sdb
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdd not /dev/sdc
--- Volume group ---
VG Name VG_DB01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 800.00 GB
PE Size 4.00 MB
Total PE 204799
Alloc PE / Size 0 / 0
Free PE / Size 204799 / 800.00 GB
VG UUID JuS0EN-aJgI-4dyH-ytgz-ePn0-hJLD-NOzTy1
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 215.25 GB
PE Size 32.00 MB
Total PE 6888
Alloc PE / Size 6888 / 215.25 GB
Free PE / Size 0 / 0
VG UUID 8GB3cq-T6kK-bnZm-zsfG-dggD-GF9a-PlTqIm
4. Using LVCREATE command, Now create the 800GB logical volume /dev/VG_DB01/LVol_DB01 for the Volume group VG_DB01
[root@edolraclin1 ~]# lvcreate -L 800G -n /dev/VG_DB01/LVol_DB01 VG_DB01
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdb not /dev/sda
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdc not /dev/sdb
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdd not /dev/sdc
Volume group "VG_DB01" has insufficient free space (204799 extents): 204800 required.
Above didn't got created since I used 800G but when used 799G it worked,
[root@edolraclin1 ~]# lvcreate -L 799G -n /dev/VG_DB01/LVol_DB01 VG_DB01
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdb not /dev/sda
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdc not /dev/sdb
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdd not /dev/sdc
Logical volume "LVol_DB01" created
[root@edolraclin1 ~]# lvdisplay
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdb not /dev/sda
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdc not /dev/sdb
Found duplicate PV gN5jnth8YSccwW5U42pzlpLYTQTAeRJe: using /dev/sdd not /dev/sdc
--- Logical volume ---
LV Name /dev/VG_DB01/LVol_DB01
VG Name VG_DB01
LV UUID lnktqC-AjHx-xwNq-tvky-EOte-SP8A-R9lfxf
LV Write Access read/write
LV Status available
# open 0
LV Size 799.00 GB
Current LE 204544
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID o3iXhS-NWXg-42ca-OmOB-jV3u-x3Ai-NRml0g
LV Write Access read/write
LV Status available
# open 1
LV Size 100.00 GB
Current LE 3200
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID RaY7SC-Gdzq-eB2k-nmyT-PQcN-ybxn-23LSDV
LV Write Access read/write
LV Status available
# open 1
LV Size 115.25 GB
Current LE 3688
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
5. Now format the logical volume with ext3 file type,
[root@edolraclin1 ~]# mkfs -t ext3 /dev/VG_DB01/LVol_DB01
mke2fs 1.39 (29-May-2006)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
104726528 inodes, 209453056 blocks
10472652 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
6392 block groups
32768 blocks per group, 32768 fragments per group
16384 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information:
This filesystem will be automatically checked every 36 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
6. Now mount the logical volume permanently on the server as /u02,
[root@edolraclin1 ~]# cd /
[root@edolraclin1 ~]# mkdir u02
[root@edolraclin1 ~]# vi /etc/fstab
/dev/VG_DB01/LVol_DB01 /u02 ext3 defaults 1 2
[root@edolraclin1 ~]# mount -a
[root@oiamsrv1 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00 97G 8.2G 84G 9% /
/dev/mapper/VolGroup00-LogVol01 112G 64G 43G 60% /u01
/dev/mapper/VG_DB01-LVol_DB01 787G 197M 747G 1% /u02
/dev/cciss/c0d0p1 97M 31M 62M 34% /boot
tmpfs 16G 0 16G 0% /dev/shm
[root@oiamsrv1 ~]# system-config-lvm
This way you can mount the new SAN storage disk of 800GB on the server.
For any queries please don't hesitate to email me: samiora@gmail.com
