Adding Additional Disks RHEL 6
Ever wondered how to add an additional disk to RHEL 5/6 and create a new LVM(Logical Volume Manager). In this post I will try to show how to do just that.
This is assuming a second disk was added (/dev/sdb) to the system. If the disk is different (dev/sdc…) just make the changes to the command.
# fdisk /dev/sdb
Create the Physical Volume
# pvcreate /dev/sdb Physical volume "/dev/sdb" successfully created
Create the volume group. We will call it vgapp.
# vgcreate vgapp /dev/sdb Volume group "vgapp" successfully created
Verify it created.
#vgs VG #PV #LV #SN Attr VSize VFree vg00 1 6 0 wz--n- 13.91G 4.72G vgapp 1 0 0 wz--n- 10.00G 10.00G
Create the logical volume, staying with app as the name we’ll call it lvapp.
# lvcreate -n lvapp -L+10G /dev/vgapp Logical volume "lvapp" created
Now lets format the logical volume as ext4.
# mkfs.ext4 /dev/vgapp/lvapp
Verify it.
# lvs LV VG Attr LSize Origin Snap% Move Log Copy% Convert lvapp vgapp -wi-a- 10.00G
Make a directory for the mount
# cd / | mkdir app
Add the new filesystem to /etc/fstab
/dev/vgapp/lvapp /app ext4 noatime 1 2
Mount it
# mount /app
All done and ready for use!
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