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Eric Blake 1899bf4737 qemu-img: Add -F shorthand to convert 
Although we have long supported 'qemu-img convert -o
backing_file=foo,backing_fmt=bar', the fact that we have a shortcut -B
for backing_file but none for backing_fmt has made it more likely that
users accidentally run into:

qemu-img: warning: Deprecated use of backing file without explicit backing format

when using -B instead of -o.  For similarity with other qemu-img
commands, such as create and compare, add '-F $fmt' as the shorthand
for '-o backing_fmt=$fmt'.  Update iotest 122 for coverage of both
spellings.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210913131735.1948339-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
2021-09-15 18:42:38 +02:00
..
_templates docs: Add QEMU version information to HTML footer 2021-07-18 10:59:47 +01:00
about docs: add supported host CPU architectures section 2021-09-14 16:51:58 +04:00
config docs: Grammar and spelling fixes 2018-07-13 10:16:04 +01:00
devel * Fixes for "-cpu max" on i386 TCG (Daniel) 2021-09-13 13:33:21 +01:00
interop docs: standardize directory index to --- with overline 2021-09-13 13:56:26 +02:00
specs docs: standardize directory index to --- with overline 2021-09-13 13:56:26 +02:00
sphinx qapidoc: introduce QAPISchemaIfCond.docgen() 2021-08-26 13:53:56 +02:00
sphinx-static sphinx: adopt kernel readthedoc theme 2021-05-14 15:05:03 +04:00
spin docs: create config/, devel/ and spin/ subdirectories 2017-06-07 18:22:03 +02:00
system target-arm queue: 2021-09-13 21:06:15 +01:00
tools qemu-img: Add -F shorthand to convert 2021-09-15 18:42:38 +02:00
user docs: standardize directory index to --- with overline 2021-09-13 13:56:26 +02:00
amd-memory-encryption.txt docs: Add SEV-ES documentation to amd-memory-encryption.txt 2021-06-17 14:11:06 -04:00
block-replication.txt colo: Update Documentation for continuous replication 2020-03-03 18:04:47 +08:00
bypass-iommu.txt docs: Add documentation for iommu bypass 2021-07-16 11:10:45 -04:00
can.txt docs: Fix some typos (found by codespell) 2020-11-18 09:29:41 +01:00
ccid.txt hw/usb/ccid: remove references to NSS 2021-07-14 14:33:53 +01:00
COLO-FT.txt docs: update to show preferred boolean syntax for -cpu 2021-02-25 14:14:33 +01:00
colo-proxy.txt docs: update to show preferred boolean syntax for -chardev 2021-02-25 14:14:33 +01:00
conf.py docs: Fix documentation Copyright date 2021-07-18 10:59:46 +01:00
confidential-guest-support.txt s390: Recognize confidential-guest-support option 2021-02-08 16:57:38 +11:00
defs.rst.inc docs: Fix typo in the default name of the qemu-system-x86_64 binary 2021-04-01 14:28:39 +02:00
hyperv.txt i386: hardcode supported eVMCS version to '1' 2021-07-13 09:13:29 -04:00
igd-assign.txt vfio/pci: Add IGD documentation 2016-05-26 11:12:05 -06:00
image-fuzzer.txt docs: List all image elements currently supported by the fuzzer 2014-09-22 11:39:35 +01:00
index.rst docs: standardize book titles to === with overline 2021-09-13 13:56:26 +02:00
memory-hotplug.txt docs: Grammar and spelling fixes 2018-07-13 10:16:04 +01:00
meson.build docs: make sphinx-build be quiet by default 2021-08-25 12:19:18 +02:00
multi-thread-compression.txt Replace '-enable-kvm' with '-accel kvm' in docs and help texts 2018-06-28 19:05:32 +02:00
multiseat.txt tests/docker/test-mingw and docs: Remove --with-sdlabi=2.0 2019-02-04 15:25:21 +00:00
nvdimm.txt nvdimm: check -object memory-backend-file, readonly=on option 2021-02-01 17:07:34 -05:00
papr-pef.txt spapr: Add PEF based confidential guest support 2021-02-08 16:57:38 +11:00
pci_expander_bridge.txt pxb: cleanup 2016-03-11 16:59:12 +02:00
pcie_pci_bridge.txt docs: add slot when adding new PCIe root port 2021-07-03 03:12:35 -04:00
pcie.txt docs: pcie: Spell out machine type needs for PCIe features 2018-03-01 16:25:37 +02:00
pvrdma.txt docs: Fix broken links 2020-09-01 09:31:33 +02:00
qcow2-cache.txt qcow2: Document the Extended L2 Entries feature 2020-08-25 08:33:20 +02:00
qdev-device-use.txt hw/ide: remove 'ide-drive' device 2021-03-18 09:22:55 +00:00
qemu_logo.pdf docs: add qemu logo to pdf 2017-01-16 10:11:43 +01:00
qemu-option-trace.rst.inc qemu-option-trace.rst.inc: Don't use option:: markup 2020-11-02 16:52:18 +00:00
qemupciserial.inf docs: Grammar and spelling fixes 2018-07-13 10:16:04 +01:00
rdma.txt migrate: remove QMP/HMP commands for speed, downtime and cache size 2021-03-18 09:22:55 +00:00
replay.txt docs: Fix some typos (found by codespell) 2020-11-18 09:29:41 +01:00
spice-port-fqdn.txt docs: add spice-port-fqdn.txt 2012-12-17 14:01:41 +01:00
throttle.txt docs: Document the throttle block filter 2020-10-02 15:46:40 +02:00
u2f.txt hw/usb: Add U2F device autoscan to passthru mode 2020-08-31 08:23:39 +02:00
virtio-balloon-stats.txt Remove the deprecated -balloon option 2018-08-31 09:52:13 +02:00
xbzrle.txt migrate: remove QMP/HMP commands for speed, downtime and cache size 2021-03-18 09:22:55 +00:00
xen-save-devices-state.txt Fix up dangling references to qmp-commands.* in comment and doc 2018-03-02 13:48:26 -06:00