In many cases the target of a convert operation is a newly provisioned target that the user knows is blank (reads as zero). In this situation there is no requirement for qemu-img to wastefully zero out the entire device. Add a new option, --target-is-zero, allowing the user to indicate that an existing target device will return zeros for all reads. Signed-off-by: David Edmondson <david.edmondson@oracle.com> Message-Id: <20200205110248.2009589-2-david.edmondson@oracle.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> |
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config | ||
devel | ||
interop | ||
specs | ||
sphinx | ||
spin | ||
system | ||
amd-memory-encryption.txt | ||
arm-cpu-features.rst | ||
barrier.txt | ||
block-replication.txt | ||
bootindex.txt | ||
can.txt | ||
ccid.txt | ||
COLO-FT.txt | ||
colo-proxy.txt | ||
conf.py | ||
cpu-hotplug.rst | ||
generic-loader.txt | ||
hyperv.txt | ||
igd-assign.txt | ||
image-fuzzer.txt | ||
index.html.in | ||
index.rst | ||
memory-hotplug.txt | ||
microvm.rst | ||
multi-thread-compression.txt | ||
multiseat.txt | ||
nvdimm.txt | ||
pci_expander_bridge.txt | ||
pcie.txt | ||
pcie_pci_bridge.txt | ||
pr-manager.rst | ||
pvrdma.txt | ||
qcow2-cache.txt | ||
qdev-device-use.txt | ||
qemu-cpu-models.texi | ||
qemu_logo.pdf | ||
qemupciserial.inf | ||
rdma.txt | ||
replay.txt | ||
security.texi | ||
spice-port-fqdn.txt | ||
throttle.txt | ||
usb-storage.txt | ||
usb2.txt | ||
vfio-ap.txt | ||
virtio-balloon-stats.txt | ||
virtio-net-failover.rst | ||
virtio-pmem.rst | ||
xbzrle.txt | ||
xen-save-devices-state.txt |