this post was submitted on 04 Jul 2024
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IMO you should use LVM2 or one of the high level filesystems that have similar features, and then dynamically create partitions and mount them as needed. E.g. Suddenly need 50G for a new VM image? Make a partition and mount it where you need the space.
If I'm not wrong LVM is a method which joins all your disk into single storage pool.
Let's say I stored data all across my LVM, now I remove one of the disks. What happen now?
You are correct, LVM combines 1 or more disks into 1 or more storage pools that can then be allocated out to logical volumes as needed.
If you just up and pull a disk from a pool (volume group), you're gonna have a bad time. You can, however, migrate the "extents" allocated to that physical disk to another in order to replace the disk, and your logical volumes can be set up with RAID-like redundancy. There's a lot of options on how to manage it.
Thank you for explaining.
No problem! To expand further, I am 99% certain it would be perfectly viable to have a single disk volume group and just take advantage of LVM's ability to create, resize and delete virtual partitions on the fly. I think you could also put all your disks into a single volume group, then ask it to not spread your logical volumes across multiple disks, if you wanted to. Could get a bit fiddly though.