[ovirt-devel] How did vm.merge do when we delete a snapshot that pointed by several other's snapshot's srcVol (as several other snapshot's backing) ?

[pengyixiang]

hello, everyone!
      I have seen about document in [2] about vm.merge in [1], then I have a 
question, If we want delete "snapshot1" in [3], and "snapshot1" is 
"snapshot2"'s srcVolume and "snapshot3"'s srcVolume at the 

same time, what should I do?  libvirt will merge snapshot1 to snapshot2 and 
snapshot3?  or other ways did for efficiency?




Thanks for your help If I can get a reply.





[1] 

@api.method
def merge(self, drive, baseVolUUID, topVolUUID, bandwidth=0, jobUUID=None):
return self.vm.merge(
        drive, baseVolUUID, topVolUUID, bandwidth, jobUUID)


[2] 
https://www.ovirt.org/develop/release-management/features/storage/live-merge/


[3]
backing_img --- snapshot1 --- snapshot2 --- active_img
                     |
                     |
                     ----- snapshot3
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