Hello All,
I had a doubt about the COW implementation of QCOW2.

Suppose two clusters point to the same address, then in that case, the
QCOW_OFLAG_COPIED is cleared in the l2 entries for both the clusters.
Now suppose a write is made to any one of the clusters, then how is the
other cluster identified, in order to set the QCOW_OFLAG_COPIED since only
reference is left.

Thanks in advance,
Furquan

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