On 3/20/19 12:40 AM, Eric Blake wrote: > The only use for the 'current' member of virDomainSnapshotDef was with > the PARSE/FORMAT_INTERNAL flag for controlling an internal-use > <active> element marking whether a particular snapshot definition was > current, and even then, only by the qemu driver on output, and by qemu > and test driver on input. But this duplicates vm->snapshot_current, > and gets in the way of potential simplifications to have qemu store a > single file for all snapshots rather than one file per snapshot. Get > rid of the member by adding a bool* parameter during parse (ignored if > the PARSE_INTERNAL flag is not set), and by adding a new flag during > format (if FORMAT_INTERNAL is set, the value printed in <active> > depends on the new FORMAT_CURRENT). Then update the qemu driver > accordingly.
Note that FORMAT_INTERNAL/FORMAT_CURRENT no longer have any clients if we accept patch 18/16; I may do a followup patch that removes them again. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org
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