On Mon, 2007-04-09 at 11:29 -0700, Adam D. Morley wrote: > Hi, > > I'd like to share LVM volumes hosted on a SAN between two systems. I do > not want to mount at the same time (ie: GFS), but rather I just want > to be able to swap them between hosts. I'm assuming this is possible > now by simply assigning SAN LUNs to both systems, but I don't see > much talk of about a piece of LVM that handles knowing which host > "owns" a given LV. > > Background: In Solaris, when using Sun's VM, one can create a shared > diskset which is seen by two hosts, but only one can do IO against the > volumes at a given time. Solaris also implements a forcible take > mechanism which allows the passive host to take the volumes from the > active host, panicing the active host out. Regular takes are also > implemented, to allow the volumes to migrate between hosts if first > released by the active host. > > It doesn't seem like LVM does this out of the box, probably because it > lacks a built-in lock manager. If it does, could someone point me to a > resource that shows how it works? > See Q#6: http://sources.redhat.com/lvm2/wiki/FrequentlyAskedQuestions > In the event LVM doesn't do this, is this something that CLVM will do? > Was there ever a version of CLVM for the 2.4.x kernel series? > Thanks! > _______________________________________________ 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/
