Red Hat ENTERPRISE LINUX - ONLINE STORAGE RECONFIGURATION GUIDE BETA Informações Técnicas descarregar pdf (Página 120)

existing LVM2 logical volume. It is recommended that you extend an existing logical volume.

15.1.1. Ext ending Swap on an LVM2 Logical Volume

By default, Red Hat Enterprise Linux 6 uses all available space during installation. If this is the case

with your system, then you must first add a new physical volume to the volume group used by the

swap space. For instructions on how to do so, refer to Section 14.2.2, “ Adding Unallocated Volumes

to a Volume Group” .

After adding additional storage to the swap space's volume group, it is now possible to extend it. To

do so, perform the following procedure (assuming /d ev/Vo l G ro up0 0 /Lo g Vo l 0 1 is the volume

you want to extend by 2 GB):

Pro ced u re 15.1. Ext en d ing Swap o n an LVM2 Lo g ical Volu me

1. Disable swapping for the associated logical volume:

# swapoff -v /dev/VolGroup00/LogVol01

2. Resize the LVM2 logical volume by 2 GB:

# lvresize /dev/VolGroup00/LogVol01 -L +2G

3. Format the new swap space:

# mkswap /dev/VolGroup00/LogVol01

4. Enable the extended logical volume:

# swapon -v /dev/VolGroup00/LogVol01

To test if the logical volume was successfully extended, use cat /pro c/swaps or free to inspect

the swap space.

15.1.2. Creat ing an LVM2 Logical Volume for Swap

To add a swap volume group (assuming /d ev/Vo l Gro up0 0/Lo gVo l 02 is the swap volume you

want to add):

1. Create the LVM2 logical volume of size 2 GB:

# l vcreate Vo l G ro up0 0 -n Lo g Vo l 02 -L 2G

2. Format the new swap space:

# mkswap /d ev/Vo l Gro up0 0/Lo gVo l 0 2

3. Add the following entry to the /etc/fstab file:

# /d ev/Vo l G ro up0 0 /Lo g Vo l 0 2 swap swap d efaul ts 0 0

4. Enable the extended logical volume:

⁠Chapt er 1 5. Swap Space

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