On Sat, Sep 29, 2012 at 3:47 PM, Ayal Baron <[email protected]> wrote:
> > > However, as I read this email, it occurred that some other things > > > might not be equal. Specifically, using multiple LUNs could provide > > > a means of shrinking the storage domain in the future. LVM provides > > > a simple means to remove a PV from a VG, but does the engine > > > support > > > this in the CLI or GUI? That is, if the a storage domain has > > > multiple LUNs in it, can those be removed at a later date? > > > > Not yet. > > > > > > Does this mean it is in the works? If not, where could I put in such > > feature request? > > > > > > Certainly, I have no pressing need of this, but it seems like a > > fairly simple thing to implement since I have done it so easily in > > the past with a just a couple of commands outside of an oVirt > > environment. I believe the primary purpose of the LVM functionality > > was to enable removal of dying PVs before they take out an entire > > VG. No reason it would not work just as well to remove a healthy PV. > > It can take a long time to move all the extents off the PV > > requested, but there is command to show the progress, so it would > > also be easy to wrap that in to the GUI. > > What's simple in a single host environment is really not that simple when > it comes to clusters. > The tricky part is the coordination between the different hosts and doing > it live or with minimal impact. > > Fair enough, but it seems that the cluster environment has been addressed with the SPM mechanism for all things LVM. Certainly, initial coding the feature would be fairly trivial, but I can imagine that testing in the cluster environment might expose additional complexity.
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