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Displaying 2 results from an estimated 2 matches for "aaaaxxxxxxxxxxxx".

2014 Jul 02
7
virsh blockcopy: doesn't seem to flatten the chain by default
Versions -------- (Libvirt locally built from a recent git commit -ec7b922): $ rpm -q libvirt-daemon-kvm qemu-system-x86 libvirt-daemon-kvm-1.2.6-1.fc20.x86_64 qemu-system-x86-2.0.0-1.fc21.x86_64 Test ---- [All images are qcow2 files.] We have this simple chain: base <- snap1 Let's quickly examine the contents of 'base' and 'snap1' images:
2014 Jul 03
0
Re: virsh blockcopy: doesn't seem to flatten the chain by default
..., let's look at it like this. When you start your guest originally, you have a big blank disk being tracked by the base image, and write into some sectors of that disk. So, use "A" to represent the initial OS install, and "X" to represent a sector not yet written: base: AAAAXXXXXXXXXXXX ==== guest: AAAAXXXXXXXXXXXX Then, you modify the guest to write the file foo, represent that with "B" for the sectors that were modified: base: AAABBBBBXXXXXXXX ==== guest: AAABBBBBXXXXXXXX then you take a snapshot, at the point you take it, snap1 is completely empty, but notice t...