From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from akaiser.csb (vpn-229-123.phx2.redhat.com [10.3.229.123]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p2LEXFX5032669 for ; Mon, 21 Mar 2011 10:33:17 -0400 Message-ID: <4D8761A8.1020009@redhat.com> Date: Mon, 21 Mar 2011 11:33:12 -0300 From: Anderson Kaiser MIME-Version: 1.0 References: <0A03EDA0F33C5C428BFFF019C40D609E9CB74986A8@SCMBXC01.bcbad.state.sc.us> In-Reply-To: <0A03EDA0F33C5C428BFFF019C40D609E9CB74986A8@SCMBXC01.bcbad.state.sc.us> Content-Transfer-Encoding: 7bit Subject: Re: [linux-lvm] vgexport usage Reply-To: akaiser@redhat.com, LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@redhat.com On 03/17/2011 02:32 PM, Males, Jess wrote: > > From 'man 8 vgexport': > vgexport allows you to make the inactive VolumeGroupName(s) unknown to the system. > > By 'unknown to the system' I would expect it would not appear in vg listings such as vgs (shown below) or vgdisplay. > > [root@icarus lvm]# vgcreate junk /dev/loop1 /dev/loop2 /dev/loop3 > Volume group "junk" successfully created > [root@icarus lvm]# vgs > VG #PV #LV #SN Attr VSize VFree > junk 3 0 0 wz--n- 48.00M 48.00M > [root@icarus lvm]# vgchange junk -a n > 0 logical volume(s) in volume group "junk" now active > [root@icarus lvm]# vgs > VG #PV #LV #SN Attr VSize VFree > junk 3 0 0 wz--n- 48.00M 48.00M > [root@icarus lvm]# vgexport junk > Volume group "junk" successfully exported > [root@icarus lvm]# vgs > VG #PV #LV #SN Attr VSize VFree > junk 3 0 0 wzx-n- 48.00M 48.00M > > > However, more disturbing is that if I remove one of the disks, lvm complains about a missing item. > > [root@icarus lvm]# losetup -d /dev/loop2 > [root@icarus lvm]# vgs > Couldn't find device with uuid 1gNBDl-dOqI-OQid-TIcq-8Lp2-qUa2-PwdvnB. > VG #PV #LV #SN Attr VSize VFree > junk 3 0 0 wzxpn- 48.00M 48.00M > > > Am I expecting the wrong things from this command? > > > Thanks, > > -- Jess Males > > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ Maybe "unknown" is the wrong word in this case. You will be able to see this VG using vgs, vgdisplay and so on. But you can't remove when you try a vgremove. You have to import it back (vgimport VolumeGroup) to change it again. I think that unknown means more like "unchangeable". []'s -- Anderson Kaiser (RHCE, RHCVA) Red Hat Brasil - Global Support Services akaiser@redhat.com +55 11 3529-6000 Direct: +55 11 3529-6093