qemu - Transforming qcows2 snapshot plus backing file into standalone image file -


i have qemu qcow2 disk snapshot dev.img based off backing file dev.bak. how can merge both standalone devplus.img, while leaving dev.bak is?

i got qemu mailing list: first copy original base file standalone image file:

cp dev.bak devplus.img

then "rebase" image file backed off original file uses new file:

qemu-img rebase -b devplus.img dev.img

then can commit changes in dev file new base:

qemu-img commit dev.img

now can use devplus.img standalone image file , rid of dev.img if wish, leaving original dev.bak intact , not corrupting other images based off it.


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