I want to jump in here and say I'm seeing the same thing. ovirt 3.3.2 on f19 hosts are vdsm 4.13.3-3.fc19 I'm using storage domain iscsi (fujitsu eternus) with 4 hosts. I've known about the warning with the vg_mda_free ( I asked on lvm with no response https://www.redhat.com/archives/linux-lvm/2014-February/msg00033.html ) but until now I didn't verify the problem with not seeing the lvs. My test was create a standalone disk on the iscsi sd. The lv only shows on the spm where it was created. None of the other 3 hosts show it. multipath -r on a non-spm host causes it to show up. same lvm version # lvm version LVM version: 2.02.98(2) (2012-10-15) Library version: 1.02.77 (2012-10-15) Driver version: 4.26.0 -John

...

This looks wrong - your vg_mda_free is zero - as vdsm complains.

Zdenek, how can we debug this further?

I see same issue in Fedora 19.

Can you share with us the output of:

cat /etc/redhat-release uname -a lvm version

Nir

$ cat /etc/redhat-release Fedora release 19 (Schrödinger's Cat) $ uname -a Linux blizzard.mgmt.futurice.com 3.12.6-200.fc19.x86_64.debug #1 SMP Mon Dec 23 16:24:32 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ lvm version LVM version: 2.02.98(2) (2012-10-15) Library version: 1.02.77 (2012-10-15) Driver version: 4.26.0