It's good think about this because running out of metadata space is no fun. We use 181KB for about 300 LVs, where each snapshot is counted as two LVs because of the way it's stored. That's based on the size of the backup. vgs shows 8 MB of metadata used, though: # vgs --units k -o vg_mda_count,vg_mda_free,vg_mda_size clones vgs #VMda VMdaFree VMdaSize vgs 3 7973.50k 16444.00k In any event, on a 19,950,000 MB partition, even 64 MB of metadata would represent 0.0006% of the storage. To think of it another way, 64 MB costs roughly 0.03 cents, so allocate plenty. -- Ray Morris support@bettercgi.com Strongbox - The next generation in site security: http://www.bettercgi.com/strongbox/ Throttlebox - Intelligent Bandwidth Control http://www.bettercgi.com/throttlebox/ Strongbox / Throttlebox affiliate program: http://www.bettercgi.com/affiliates/user/register.php On Tue, 24 Apr 2012 14:23:31 +0200 Jan-Hendrik Palic <billgotchy@ki.tng.de> wrote: > Hi there, > > we planning to create a pv and vg on a 19,95TB partition running on > raid6. One issue I have is the size of the metadata. I am looking for > a way to calculate the this size, but unfortunatly, I cannot find a > some. Which size should I use? > > Thanks in advance. > > Jan > > _______________________________________________ > 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/ > _______________________________________________ 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/
