I'm using a minimal install of Ubuntu server mainly for Docker, and I'm running low on disk space. I want to know what the best approach is when adding a second drive: should I extend the LVM or mount the new drive in the current filesystem and move my Docker files onto it? Also, will either option affect performance? Thanks!
3 Answers
I learned this the hard way—using JBOD with LVM can look fine until one disk fails and takes down the whole volume. So be careful with that setup!
This may also depend on how you're managing your disks. If you extend a logical volume to a second physical disk, you're essentially creating a JBOD setup. If the drives are the same size, MD RAID could be a better choice. If they're different sizes, you should keep them as separate disks. Since you're only using Docker and not VMs, mounting the new drive to the existing filesystem and moving your Docker data over might be simpler and could save you some hassle.
Make sure to consider what you're running out of disk space for. Is it the Docker images, volumes, or something else? For instance, my largest container is a music database that takes up around 80GB. Just a thought!
Related Questions
Can't Load PhpMyadmin On After Server Update
Redirect www to non-www in Apache Conf
How To Check If Your SSL Cert Is SHA 1
Windows TrackPad Gestures