Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is there any other Linux application similar to Greyhole? Preferably without relying on samba? I'm going to use it for a typical home server. The features that I want are what Greyhole has (from the link):

  • JBOD concatenation storage pool
  • Easily recoverable files

I already tried LVM and RAID, but the drives aren't readable on their own.

share|improve this question
up vote 3 down vote accepted

Finally found what I was looking for: AUFS

Basically, it combines several branches (mount points like /mnt/hd1, /mnt/hd2 etc.) into a single tree (/mnt/virtual). The filesystem in each of the mount points doesn't matter, AUFS will merge all the same. This also means that the mount points are readable on their own. Also, AUFS can balance free space and it's exportable using NFS or Samba.

share|improve this answer
Unless I am missing something, Greyhole can use any filesystem also. – DominicM Sep 11 '14 at 15:40

Sadly, there's no such alternatives.

Some people have suggested writing a logger for Greyhole that would use FUSE or something else, to replace logs created by Samba, but nobody ever contributed code that would do that.

Most people who need local access to files mount their (Greyhole) Samba shares locally, and point to that in the various programs that need to access the files protected/spread by Greyhole. It works pretty well.

share|improve this answer

BTRFS is stable enough to provide a good solution to storage pooling and snapshot backup.

share|improve this answer
Can it support different drive sizes with redundancy? – TheLQ Mar 10 '12 at 16:48
@Frank Last I heard, BTRFS doesn't have a fsck utility. – zang3tsu Mar 12 '12 at 3:12

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.