LVM requires an LV (Logical Volume) to be in a single VG (Volume Group). A VG is composed of one or more PVs (Physical Volumes). A PV is basically a specially formatted disk partition (which can be the entire disk or subdivision). A single file system must reside on a single LV. Which is in a VG. Which can span multiple PVs. And so, in a somewhat indirect manner, a file system can span multiple physical volumes.
http://www.web-manual.net/linux-3/logical-volume-manager-in-linux/ On Tue, Jun 11, 2013 at 8:28 AM, Shmuel Metz (Seymour J.) < shmuel+...@patriot.net> wrote: > In > <CAAJSdjhdFqcpkSUKJ9Uu+DSJh1VwwJdFT2VSHwC3P9=79nc...@mail.gmail.com>, > on 06/10/2013 > at 11:45 AM, John McKown <john.archie.mck...@gmail.com> said: > > >LUW works similar to z/OS UNIX file systems. I.e. there is a "file > >system" which is formatted using some utility (mkfs in the Linux/UNIX > >world, format in Windows). This sets up all the internals. In today's > >LUW, it is usually possible for a single file to be as big as the > >file system upon which it resides. But no bigger. There is nothing > >like a "multi file system" file (which would vaguely like a > >multivolume data set). > > I don't know about windoze, but don't LVM and EVMS allow file systems > to span devices? > > -- > Shmuel (Seymour J.) Metz, SysProg and JOAT > Atid/2 <http://patriot.net/~shmuel> > We don't care. We don't have to care, we're Congress. > (S877: The Shut up and Eat Your spam act of 2003) > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- This is a test of the Emergency Broadcast System. If this had been an actual emergency, do you really think we'd stick around to tell you? Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
