Hi Zdenek, `sudo lvs --version` says : LVM version: 2.02.180(2)-RHEL7 (2018-07-20) Library version: 1.02.149-RHEL7 (2018-07-20) Driver version: 4.37.1 So that means it's version 2, right? (I'm running the latest version of CentOS.) Regards, Matt -----Original Message----- From: Zdenek Kabelac [mailto:zkabelac@xxxxxxxxxx] Sent: Thursday, 10 January 2019 8:45 PM To: LVM general discussion and development <linux-lvm@xxxxxxxxxx>; Davis, Matthew <Matthew.Davis.2@xxxxxxxxxxxxxxxx> Subject: Re: how to copy a snapshot, or restore snapshot without deleting it Dne 10. 01. 19 v 7:23 Davis, Matthew napsal(a): > Hi Marian, > > I'm trying to do it with thin snapshots now. It's all very confusing, and I can't get it to work. > I've read a lot of the documentation about thin stuff, and it isn't clear what's happening. > > I took a snapshot with > > sudo lvcreate -s --name mySnap1 centos/root > > Then I copied that snapshot with > > sudo lvcreate -s --name mySnap2 centos/mySnap1 > > When I try to restore mySnap1 it says: > > $sudo lvconvert --merge centos/mySnap1 > centos/mySnap1 is not a mergeable logical volume > Hi Aren't you using some quite ancient version of lvm2 ? You need to use lvm2 which does support thin volume merging Regards Zdenek _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
