On Wed, Nov 04 2009 at 5:20pm -0500, Mike Snitzer <snitzer@xxxxxxxxxx> wrote: > On Wed, Nov 04 2009 at 5:11pm -0500, > Mike Snitzer <snitzer@xxxxxxxxxx> wrote: > > > Until now snapshot_resume only allowed the resuming snapshot to get the > > exception store from another snapshot. > > > > Revise snapshot_resume's exception handover to allow a snapshot to > > handover its exceptions to another snapshot prior to resuming. > > > > This is needed to accomodate the following sequence: > > new_snapshot->ctr > > old_snapshot->suspend > > old_snapshot->resume > > new_snapshot->resume > > > > lvm2 relies on this sequence if 'lvchange --refresh' is used to start a > > snapshot merge that was deferred until both origin and snapshot were not > > in use. > > FYI, the above is the last of 3 patches in the "exception handover" > series, the patch order is: Ok, actually this 'suspended' flag patch is the first; so its 4 patches: dm snapshot: add suspended flag to dm_snapshot http://patchwork.kernel.org/patch/55021/ > dm snapshot: initial support for exception handover > http://patchwork.kernel.org/patch/55022/ > > dm snapshot: exception handover improvements > http://patchwork.kernel.org/patch/55569/ > > dm snapshot: revise snapshot_resume's exception handover > http://patchwork.kernel.org/patch/57787/ -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
