* [Qemu-devel] Doubt about COW feature of QCOW2
@ 2009-11-09 10:22 Furquan Shaikh
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From: Furquan Shaikh @ 2009-11-09 10:22 UTC (permalink / raw)
To: qemu-devel
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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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2009-11-09 10:22 [Qemu-devel] Doubt about COW feature of QCOW2 Furquan Shaikh
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