On Thu, Nov 17, 2016 at 10:41 PM, Lionel Orellana <lione...@gmail.com> wrote:
> Hi, > > Couple of questions regarding Persistent Volumes, in particular NFS ones. > > 1) If I have a PV configured with the Retain policy it is not clear to me > how this PV can be reused after the bound PVC is deleted. Deleting the PVC > makes the PV status "Released". How do I make it "Available" again without > losing the data? > You can keep the PVC around longer if you intend to reuse it between pods. There is no way for a PV to go from Released to Available again in your scenario. You would have to delete and recreate the PV. It's a pointer to real storage (the NFS share), so you're just recreating the pointer. The data in the NFS volume itself is untouched. > > 2) Is there anything (e.g. all nodes crashing due to some underlying > infrastructure failure) that would cause the data in a "Retain" volume to > be wiped out? We had a problem with all our vmware servers (where I host > my openshift POC) and all my NFS mounted volumes were wiped out. The > storage guys assure me that nothing at their end caused that and it must > have been a running process that did it. > "Retain" is just a flag to the recycling process to leave that PV alone when it's Released. The PV's retention policy wouldn't cause everything to be deleted. NFS volumes on the node are no different than if you called "mount" yourself. There is nothing inherent in OpenShift itself that is running in that share that would wipe out data. > > Thanks > > Lionel. > > _______________________________________________ > users mailing list > users@lists.openshift.redhat.com > http://lists.openshift.redhat.com/openshiftmm/listinfo/users > >
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