26.What are logical volumes?
Ans.
1. Logical volume manager (LVM) enables you to be much more flexible with your disk usage than you can be with conventional old-style file partitions.
2. Normally if we create a partition we have to keep the partition at that size indefinitely.
3. For example, if our system logs have grown immensely, and we ran out of space on ‘/var’ partition, increasing a partition size without LVM is a big pain.
4. With LVM we can add another disk, create a physical volume to the volume group that contains the /var partition.
5. Then we can use the LVM file system resizing tool to increase the file system size to match the new partition size.
6. We can use a file system creation tool such as fdisk to create a file system on logical volume.
7. Basic syntax for using ‘lvm’ command is :
lvm<command> file
We can obtain complete listing of commands by entering ‘lvm help’ at command prompt.
8. To get a list of logical volumes on your system, enter ‘lvm lvdisply’ in terminal prompt.
Ans.
1. Logical volume manager (LVM) enables you to be much more flexible with your disk usage than you can be with conventional old-style file partitions.
2. Normally if we create a partition we have to keep the partition at that size indefinitely.
3. For example, if our system logs have grown immensely, and we ran out of space on ‘/var’ partition, increasing a partition size without LVM is a big pain.
4. With LVM we can add another disk, create a physical volume to the volume group that contains the /var partition.
5. Then we can use the LVM file system resizing tool to increase the file system size to match the new partition size.
6. We can use a file system creation tool such as fdisk to create a file system on logical volume.
7. Basic syntax for using ‘lvm’ command is :
lvm<command> file
We can obtain complete listing of commands by entering ‘lvm help’ at command prompt.
8. To get a list of logical volumes on your system, enter ‘lvm lvdisply’ in terminal prompt.
Comments
Post a Comment