On 24/08/16 09:50 PM, su liu wrote: > I have a question about lvm2 cluster, The scene is that I try to imitate > FCSAN by mapping a rbd volume to two compute node, Then I using the rbd > volume to create a PV and VG.I stoped the lvmetad daemon on the compute > nodes. Then I find that when I operating the VG on one compute node, the > changes can also be aware on another compute nodes. > > But this docment(http://www.tldp.org/HOWTO/LVM-HOWTO > /sharinglvm1.html） says that "*LVM is not cluster aware".* > > My question is that can I use the method to achieve the case that I > create or delete lv on one node whlie other compute node can using the lvs? > > Can anybody explain this? > > thx very much! You can use DLM (distributed lock manager) to provide cluster locking to LVM (locking_type = 3 via clvmd). This requires a cluster though, which you can get with corosync + pacemaker (and use stonith!). Further details/advice requires more understanding of your environment and use-case. Feel free to pop over to Clusterlabs[1], as many of us do this setup regularly. I use clustered LVM in all our HA setups and have done so successfully for years. digimer 1. http://clusterlabs.org/mailman/listinfo/users - freenode #clusterlabs -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? _______________________________________________ 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/
