Creating a /tmp Partition

This section describes how to creating a /tmp partition on a guest vServer by using a logical volume.

Note:

The procedure described here is relevant to vServers created by using the EECS 2.0.6.x.x Guest Base Template. Do not use this procedure to modify the disks of vServers creating using a Guest Base Template that is earlier than EECS version 2.0.6.0.0.

Create a volume, as described in Creating Volumes.
Attach the volume to the vServer for which you want to modify the /tmp size, as described in Attaching Volumes to a vServer.
Log in, as the root user, to the vServer for which you want to modify the /tmp size, and verify whether the volume is attached.
```
# cat /proc/partitions
major minor  #blocks  name
202        0    6145024 xvda
202        1     104391 xvda1
202        2    6040440 xvda2
253        0    5505024 dm-0
253        1     524288 dm-1
202       16    16777216 xvdb
```
The output should contain a line similar to the last line (xvdb in this example), which is the partition corresponding to the volume that you attached.

Format the partition as an LVM-type partition.

Note:

The user input required at various stages in this step is indicated by bold text.

# fdisk /dev/xvdb
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 previouscontent won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help): n
Command action
e   extended
p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1): Press Enter
Last cylinder or +size or +sizeM or +sizeK (1-522, default 522): Press Enter
Using default value 522

Command (m for help): t
Hex code (type L to list codes): 8e
Changed system type of partition 2 to 8e (Linux LVM)

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

Show the current physical volumes on the disk:

# pvdisplay
--- Physical volume ---
PV Name               /dev/xvda2
VG Name               VolGroup00
PV Size               5.76 GB / not usable 10.87 MB
Allocatable           yes (but full)
PE Size (KByte)       32768
Total PE              184
Free PE               0
Allocated PE          184
PV UUID               SaMlQo-Ct55-8IhX-ZEaf-rT4X-gISK-XEwdvc

Create a physical volume using the new partition:

# pvcreate /dev/xvdb1
  Writing physical volume data to disk "/dev/xvdb1"
  Physical volume "/dev/xvdb1" successfully created

Verify the new physical volume:

# pvdisplay
--- Physical volume ---
PV Name               /dev/xvdb1
VG Name
PV Size               15.99 GB / not usable 2.74 MB
Allocatable           yes (but full)
PE Size (KByte)       4096
Total PE              4094
Free PE               0
Allocated PE          4094
PV UUID               o2HIse-1gsv-lzdk-YEC1-rXKq-4Fkg-8RN2rL

--- Physical volume ---
PV Name               /dev/xvda2
VG Name               VolGroup00
PV Size               5.76 GB / not usable 10.87 MB
Allocatable           yes (but full)
PE Size (KByte)       32768
Total PE              184
Free PE               0
Allocated PE          184
PV UUID               SaMlQo-Ct55-8IhX-ZEaf-rT4X-gISK-XEwdvc

Create a volume group for the new physical volume:
```
# vgcreate myVolGroup /dev/xvdb1
```
Activate the new volume group:
```
# vgchange -a y myVolGroup
```

Create a logical volume:

# lvcreate -l 4094 myVolGroup -n myVolGroup-LogVol00

Change the type of the new logical volume to ext3:

# mkfs.ext3 /dev/myVolGroup/myVolGroup-LogVol00

Mount the logical volume to /tmp:

# mount /dev/myVolGroup/myVolGroup-LogVol00  /tmp/

Verify whether /tmp has the modified space.

# df -h
Filesystem                                   Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00              5.1G  3.3G  1.6G  68% /
/dev/xvda1                                    99M   23M   71M  25% /boot
tmpfs                                        2.0G     0  2.0G   0% /dev/shm
/dev/mapper/myVolGroup-myVolGroup-LogVol00    16G  173M   15G   2% /tmp