What is LVM thin provisioning?
LVM thin provisioning allows you to over-commit the physical storage. LVM thin provisioning allows you to create virtual disks inside a thin pool. The size of the virtual disk can be greater than the available space in the thin pool.
How does LVM thin provisioning work?
LVM Thin Provisioning requires that the thinly provisioned volumes exist in what is known as a Thin Pool. The Thin Pool is just a special type of Logical Volume. The Thin Pool sets how much space is made available to thinly provisioned volumes. It is very important that we monitor the available space in this pool.
What is thinly provisioned volume?
A thin-provisioned volume presents a different capacity to mapped hosts than the capacity that the volume consumes in the storage pool. The system supports thin-provisioned volumes in standard pools and in data reduction pools.
What is LVM and ZFS?
ZFS combines the roles of a file system and volume manager, enabling additional storage devices to be added to a live system and having the new space available on all of the existing file systems in that pool immediately. It does what LVM and RAID do in one package.
What is thick and thin provisioning?
In virtual storage, thick provisioning is a type of storage allocation in which the amount of storage capacity on a disk is pre-allocated on physical storage at the time the disk is created. Thin provisioning helps to avoid wasted physical capacity and can save businesses on up-front storage costs.
What is a thin LV?
Example A thin pool has 10G of physical data space, and a thin LV has a virtual size of 100G. Writing a 1G file to the file system reduces the free space in the thin pool by 10% and increases the virtual usage of the file system by 1%.
What is LVM and LVM thin?
LVM normally allocates blocks when you create a volume. LVM thin pools instead allocates blocks when they are written. This behaviour is called thin-provisioning, because volumes can be much larger than physically available space.
What is thin provisioning in vmware?
Thin provisioning is another type of storage pre-allocation. A thin-provisioned virtual disk consumes only the space that it needs initially, and grows with time according to demand.