Comments on: Mhddfs – Combine Several Smaller Partition into One Large Virtual Storage

By: analogtek

analogtek — Thu, 08 May 2025 07:24:48 +0000

I use soft-links to my home partition. Plasma makes this rather easy.

By: Anil Garg

Anil Garg — Wed, 14 Aug 2019 17:51:18 +0000

If as you say that mhddfs "required lots of processing power during runtime", would you suggest MergerFS? Of they both take a similar hit on overheads...

By: Vilial

Vilial — Tue, 21 Aug 2018 10:57:23 +0000

I don’t know maybe it is outdated but I’ve just lost control over VPS, because the /etc/fstab record present here is incorrectly formed.

It should not contain spaces separating folders in the beginning.

See man mhddfs for correct example.

By: C. R. Zamana

C. R. Zamana — Sat, 18 Jun 2016 04:20:29 +0000

MHDDFS has one GIGANTIC advantage over LVM or RAID-0: if you ever lose one of the disks, you’ll lose only the data that was on that disk, and not the whole data of the combined filesystem.

Considering this, mhddfs is the simplest solution for joining several disks/partitions/folders into one lógica volume.

Redundancy and backup should be considered as complement, of course.

By: maggi

maggi — Sun, 22 May 2016 10:19:22 +0000

In reply to Anon.

Well that depends on the type of your RAID.
RAID0 will stripe all the data over the drives, so if any of them fails, the whole virtual drive will be ruined, and you have no chance to get your data back. So the risk increases with every disk in the array.
RAID1 will give you a better availability, since it mirrors the data on two disks. If one fails, the other one will still be OK and hold the data.