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

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I don’t know maybe it is outdated but I’ve just lost control over VPS, because the /etc/fstab record present here is incorrectly formed.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

By: Anon

Anon — Thu, 17 Mar 2016 10:52:03 +0000

In reply to Ravi Saive.

> that allows us to join or combine several partitions

LVM2 also allows the joining or combining of several partitions into a single large device. LVM2 will use a partition, or the whole disk, depending on what you tell it to do. There is zero reason to use this fuse system (and incur the fuse overhead) when LVM2 already does everything it does, better.