On 10/27/2012 04:37 PM, Jorge Fábregas wrote: > Hi there, > > I'm just curious: Where does the "Copy on Write" (from QCOW) comes > from? Everything I've been reading regarding how snapshots work with > QEMU points to a "redirect on write" approach. Or is the COW part > related to some other internal mechanism (not related to snapshots)? >
Probably a question for qemu-devel, but I think the qcow name was derived from the cow format from user mode linux. The cow format's primary feature was essentially qcow's backing_file file feature, so the name is likely derived from that, and not necessarily qcow2's snapshotting abilities. - Cole _______________________________________________ virt mailing list [email protected] https://admin.fedoraproject.org/mailman/listinfo/virt
