On Thu, Nov 19 2009 at 9:53am -0500, Alasdair G Kergon <agk@xxxxxxxxxx> wrote: > On Thu, Nov 19, 2009 at 09:02:33AM -0500, Mike Snitzer wrote: > > DM (and LVM) snapshot merging allows a snapshot (its COW store) to be > > merged back into the snapshot's origin device. > > One expected use of snapshot merging is rollback of a root filesystem > > after system upgrades (e.g.: yum update). > > Has the patch to 'Documentation/device-mapper' been written yet? > (It won't go upstream until we have that of course. Same for the > replicator and any other new dm targets.) Nope, I'll work on that (and adding comments like Andi suggested). I'll include these changes into the v4 snapshot-merge patchset submission that I'll be getting out today. The v4 patchset will be based on v9 of the handover patch that we worked on (which I just emailed to dm-devel). Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
