Red Hat ENTERPRISE LINUX 4 - LVM ADMINISTRATOR Guida di Installazione Scaricare il pdf (Pagina 75)

Creating the New Logical Volume

Volume group "yourvg" successfully split from "myvg"

You can use the vgs command to see the attributes of the two volume groups.

[root@tng3-1 ~]# vgs

VG #PV #LV #SN Attr VSize VFree

myvg 2 1 0 wz--n- 34.30G 10.80G

yourvg 1 0 0 wz--n- 17.15G 17.15G

5.3.4. Creating the New Logical Volume

After creating the new volume group, you can create the new logical volume yourlv.

[root@tng3-1 ~]# lvcreate -L5G -n yourlv yourvg

Logical volume "yourlv" created

5.3.5. Making a File System and Mounting the New Logical Volume

You can make a file system on the new logical volume and mount it.

[root@tng3-1 ~]# mkfs.gfs2 -plock_nolock -j 1 /dev/yourvg/yourlv

This will destroy any data on /dev/yourvg/yourlv.

Are you sure you want to proceed? [y/n] y

Device: /dev/yourvg/yourlv

Blocksize: 4096

Filesystem Size: 1277816

Journals: 1

Resource Groups: 20

Locking Protocol: lock_nolock

Lock Table:

Syncing...

All Done

[root@tng3-1 ~]# mount /dev/yourvg/yourlv /mnt

5.3.6. Activating and Mounting the Original Logical Volume

Since you had to deactivate the logical volume mylv, you need to activate it again before you can

mount it.

root@tng3-1 ~]# lvchange -a y mylv

[root@tng3-1 ~]# mount /dev/myvg/mylv /mnt

[root@tng3-1 ~]# df

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/yourvg/yourlv 24507776 32 24507744 1% /mnt

/dev/myvg/mylv 24507776 32 24507744 1% /mnt

5.4. Removing a Disk from a Logical Volume

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Red Hat ENTERPRISE LINUX 4 - LVM ADMINISTRATOR Guida di Installazione Pagina 75