Hi Zdenek, Here's what I see with `sudo lvs -a`. (My snapshots are actually called `fresh` and `fresh2` not `mySnap`) ``` LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert fresh centos Vwi---tz-k <1.46t pool00 fresh2 centos Vwi---tz-k <1.46t pool00 fresh [lvol0_pmspare] centos ewi------- 760.00m pool00 centos twi-aotz-- <1.46t 0.18 3.14 [pool00_tdata] centos Twi-ao---- <1.46t [pool00_tmeta] centos ewi-ao---- 760.00m root centos Vwi-aotz-- <1.46t pool00 0.16 swap centos -wi-ao---- 4.00g v01 centos Vwi---tz-k <1.46t pool00 root ``` Regards, Matt -----Original Message----- From: Zdenek Kabelac [mailto:zkabelac@xxxxxxxxxx] Sent: Tuesday, 15 January 2019 9:50 PM To: LVM general discussion and development <linux-lvm@xxxxxxxxxx>; Davis, Matthew <Matthew.Davis.2@xxxxxxxxxxxxxxxx>; Zdenek Kabelac <zkabelac@xxxxxxxxxx> Subject: Re: how to copy a snapshot, or restore snapshot without deleting it Dne 14. 01. 19 v 23:44 Davis, Matthew napsal(a): > 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.) Hmm - version looks fine >> $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 > Can you paste 'lvs -a' prior this operation ? If the lvm2 tells you that 'mySnap1' is not mergable LV - then it likely has no 'origin' to merge into. 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/
