Can't install mergerfs due to version of libc6 (>= 2.14 required)

Hi All,

I installed OMV on a Mac Mini by following the instructions I found on this forum. I installed 7.9 wheezy and then added the OMV install on top of that following this guide:
Howto install OpenMediaVault on Debian 7.x (Wheezy)

Once that was done, I tried to install SnapRAID plugin and was getting an error. I updated my sources.list file as per this guide:
Problems with sources.list?

SnapRAID installed but now when I try to install unionfilesystems I see an error. I used SSH and aptitude -f install openmediavault-unionfilesystems to get more details and here's what I see:

The following packages have unmet dependencies:
mergerfs : Depends: libc6 (>= 2.14) but 2.13-38+deb7u10 is installed.
Depends: libstdc++6 (>= 4.9) but 4.7.2-5 is installed.

Not sure what to do from here. I don't want to try updating libc6 without good knowledge since it is a core part.

Let me know if you need anything else and thanks in advance for your help!!

XXXXXXXXXX:~# cat /etc/apt/sources.list
deb http://ftp.us.debian.org/debian/ wheezy main contrib non-free

deb http://security.debian.org/ wheezy/updates main contrib non-free

deb http://ftp.us.debian.org/debian/ wheezy-updates main contrib non-free

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XXXXXXXXXX:~# cat /etc/debian_version
7.9

Yes, I saw that thread where you pointed that out (sources.list).

I installed the OMV extras by uploading the DEB file from here:
http://omv-extras.org/openmedi…vextrasorg_latest_all.deb

Is that not correct?

@subzero79
XXXXXXXXXX:~# apt-cache policy mergerfs openmediavault-unionfilesystems
mergerfs:
Installed: (none)
Candidate: 2.12.3~debian-wheezy
Version table:
2.12.3~debian-wheezy 0
995 http://packages.omv-extras.org/debian/ stoneburner/main amd64 Packages
openmediavault-unionfilesystems:
Installed: (none)
Candidate: 2.3
Version table:
2.3 0
995 http://packages.omv-extras.org/debian/ stoneburner/main amd64 Packages

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@ryecoaaron
I just tried to install unionfilesystems again in order to paste the error for you and it worked this time. I didn't reboot the machine or anything. Not sure if the REPO was changed or anything but my problem has now disappeared. Thank you both for your help! Much appreciated and thanks for all your hard work on OMV... definitely the best NAS solution out there in my opinion!