Hi Paolo, Please take a look to the LVM drivers developed by Sander Klous here [1]. I think the are using the same setup and deals with the low-level setup of the LVM volumes for snapshots (check the comments of the issue...)
[1] http://dev.opennebula.org/issues/32 Cheers Ruben On Mon, Dec 13, 2010 at 7:22 PM, Paolo Smiraglia <paolo.smirag...@gmail.com>wrote: > Hi to every ones.... > > We have configured a shared storage between some nodes with iSCSI, and > we want to use LVM across them. > > Our access model is based on syncronized commands remotely executed by > the master node with ssh (authenticated by public key without > password). > > The master node is the one that can create/remove logical volumes > which are a snapshot of a "base" logical voume. > > Other nodes exclusively access logical volumes created by master node. > > In order to do so, we have installed in all nodes > > * RedHat Enterprise 6 beta2 > * Cluster Suite > * CLVMD > > Then we have configured LVM with > > locking_type=3 (lvm.conf) > > and fist attept we marked the volume group as "clustered". > > Unfortunately we got an error message that is saying snapshot is not > supoprted for clustered volume groups. In order to overcome this issue > we used a workaround that conists in clearing the clustered flag in > the volume group. However, this caused some concurrency problems that > prevent a logical volume to be removed even if not used. > > Do you have a solution for this problem? Thanks in advance for replies... > > -- > PAOLO SMIRAGLIA > http://portale.isf.polito.it/paolo-smiraglia > _______________________________________________ > Users mailing list > Users@lists.opennebula.org > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org > -- Dr. Ruben Santiago Montero Associate Professor (Profesor Titular), Complutense University of Madrid URL: http://dsa-research.org/doku.php?id=people:ruben Weblog: http://blog.dsa-research.org/?author=7
_______________________________________________ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org