I'm very new for LVM. Current I have 1 HDD with LVM but it full. So I need to add second HDD into server. How can I increase partition size on HDD1 with LVM? Please help me. Thank you.

Hello and welcome to LQ.

It may be a very trivial task of quite difficult. If we assume a common distro and maybe ext filesystem it should be mostly easy.

Gui may be easy if you have a supported distro. http://www.howtogeek.com/127246/linu...Speed=noscript

Command line like this. http://rgheck.blogspot.com/2012/07/h...lvm-drive.html

Your distro may have unique issues too.

If LVM is already installed on your computer, then the procedure that you will need to follow ... rather abundantly described already on the Internet ... is basically as follows:

(1) First, you will add another hard-disk drive to the computer system. You will then instruct LVM(!) to format it, as it sees fit, and to add it to the current "physical storage pool."

(2) Next, you will tell LVM to add (all, or some part of ...) this physical resource to a "logical volume," which is what the operating-system sees.

(3) Finally, you will instruct the file-system to grow into the now-magickally-available space. (Thanks to LVM, the operating-system's file system does not perceive that "the logical volume" is not, in fact, hosted by a single physical storage device.)

Spend a little bit of time, "tomorrow morning, over coffee," doing some Internet research ... say, start with the web-site for your chosen "distro" ... to see exactly what's involved; exactly how it's done. Believe it or not, (aside from a little while spent physically-formatting the new drive ...), it's "yea, a bit obscure, but ..." quite easy.

You can span multiple physical disks with a single logical volume if you wish. I avoid doing that if possible, since any disk failure may make the entire volume unrecoverable.

I also prefer to create partitions, then have lvm add the partition as a physical volume. It makes it easier to keep things straight in tools like fdisk that are not lvm aware.

To me, that sort-of defeats the "best" purpose of LVM, which is, "to combine it with RAID." Not only do you spread the data out among multiple physical volumes, but you also at the same time provide physical redundancy for those volumes.

I didn't realize the OP had a raid setup.