If Linux Mint is the only operating system you want to run on this computer and all data can be lost on the hard drive, choose Erase disk and install Linux Mint. Encrypt the new Linux Mint installation for security refers to full disk encryption. Linux Mint requires one partition to be mounted on the root / directory.
If you select "Use LVM with the new Ubuntu installation", it will install Ubuntu on a single drive, with volume group (VG) ubuntu-vg , physical volume (PV) /dev/sdx5 (where "x" is the letter of the drive used by the installer, usually "a"), and logical volumes (LV) /dev/ubuntu-vg/root and /dev/ubuntu-vg/swap_1 .
Logical volume management (LVM) is a form of storage virtualization that offers system administrators a more flexible approach to managing disk storage space than traditional partitioning. The goal of LVM is to facilitate managing the sometimes conflicting storage needs of multiple end users.
Logical volume management provides a higher-level view of the disk storage on a computer system than the traditional view of disks and partitions. This gives the system administrator much more flexibility in allocating storage to applications and users.
The main advantages of LVM are increased abstraction, flexibility, and control. Logical volumes can have meaningful names like “databases” or “root-backup”. Volumes can be resized dynamically as space requirements change and migrated between physical devices within the pool on a running system or exported easily.
The tests seem to suggest the performance drop can be from 15% to 45% with LVM, compared to when not using it. They found an even bigger drop when two physical partitions are used within one LVM setup. They concluded that the biggest performance impacts were the use of LVM, as well as the complexity of it's use.
So yes, indeed, when LVM implements encryption this is "full-disk encryption" (or, more accurately, "full-partition encryption"). Applying encryption is fast when it is done upon creation: since the initial contents of the partition are ignored, they are not encrypted; only new data will be encrypted as it is written.
Ubuntu's installer offers an easy “Use LVM” checkbox. The description says it enables Logical Volume Management so you can take snapshots and more easily resize your hard disk partitions — here's how to do that. LVM is a technology that's similar to RAID arrays or Storage Spaces on Windows in some ways.
Try running lvdisplay on command line and is should display any LVM volumes if they exist. Run df on the MySQL data directory; this will return the device where the directory resides. Then run lvs or lvdisplay to check if the device is an LVM one.
LVM uses a different concept. The VGs are carved into one or more Logical Volumes (LVs), which then are treated as traditional partitions. An administrator thinks of LVM as total combined storage space. Three hard disk drives are combined into one volume group that is then carved into two logical volumes.
As to what the actual difference is between those two options - well that could go on to be a very long answer but essentially LVM deals with extents and has multiple additional layers of abstraction that clearly need to be considered during boot - whereas the standard Linux Partition Type should be a lot more
A “low value men” (LVM) is any man that won't commit to them, regardless of his attractiveness or success.
