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xemu/tests/qemu-iotests/051.out
Eric Blake b66ff2c298 iotests: Specify explicit backing format where sensible 
There are many existing qcow2 images that specify a backing file but
no format.  This has been the source of CVEs in the past, but has
become more prominent of a problem now that libvirt has switched to
-blockdev.  With older -drive, at least the probing was always done by
qemu (so the only risk of a changed format between successive boots of
a guest was if qemu was upgraded and probed differently).  But with
newer -blockdev, libvirt must specify a format; if libvirt guesses raw
where the image was formatted, this results in data corruption visible
to the guest; conversely, if libvirt guesses qcow2 where qemu was
using raw, this can result in potential security holes, so modern
libvirt instead refuses to use images without explicit backing format.

The change in libvirt to reject images without explicit backing format
has pointed out that a number of tools have been far too reliant on
probing in the past.  It's time to set a better example in our own
iotests of properly setting this parameter.

iotest calls to create, rebase, and convert are all impacted to some
degree.  It's a bit annoying that we are inconsistent on command line
- while all of those accept -o backing_file=...,backing_fmt=..., the
shortcuts are different: create and rebase have -b and -F, while
convert has -B but no -F.  (amend has no shortcuts, but the previous
patch just deprecated the use of amend to change backing chains).

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200706203954.341758-9-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-07-14 15:18:59 +02:00

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QA output created by 051
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
=== Unknown option ===
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=,if=none,id=drive0
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=,if=none,id=drive0: Block format 'qcow2' does not support the option 'unknown_opt'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on,if=none,id=drive0
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=on,if=none,id=drive0: Block format 'qcow2' does not support the option 'unknown_opt'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234,if=none,id=drive0
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=1234,if=none,id=drive0: Block format 'qcow2' does not support the option 'unknown_opt'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo,if=none,id=drive0
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,unknown_opt=foo,if=none,id=drive0: Block format 'qcow2' does not support the option 'unknown_opt'
=== Unknown protocol option ===
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=: Block protocol 'file' doesn't support the option 'unknown_opt'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=on
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=on: Block protocol 'file' doesn't support the option 'unknown_opt'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=1234
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=1234: Block protocol 'file' doesn't support the option 'unknown_opt'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,file.unknown_opt=foo: Block protocol 'file' doesn't support the option 'unknown_opt'
=== Invalid format ===
Testing: -drive file=TEST_DIR/t.qcow2,format=foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=foo: Unknown driver 'foo'
Testing: -drive file=TEST_DIR/t.qcow2,driver=foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=foo: Unknown driver 'foo'
Testing: -drive file=TEST_DIR/t.qcow2,driver=raw,format=qcow2
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=raw,format=qcow2: Cannot specify both 'driver' and 'format'
Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,format=qcow2
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=qcow2,format=qcow2: Cannot specify both 'driver' and 'format'
=== Node names ===
Testing: -drive file=TEST_DIR/t.qcow2,node-name=x123456789012345678901234567890
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,node-name=x1234567890123456789012345678901
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,node-name=x1234567890123456789012345678901: Node name too long
Testing: -drive file=TEST_DIR/t.qcow2,node-name=All-Types.of_all0wed_chars
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,node-name=123foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,node-name=123foo: Invalid node name
Testing: -drive file=TEST_DIR/t.qcow2,node-name=_foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,node-name=_foo: Invalid node name
Testing: -drive file=TEST_DIR/t.qcow2,node-name=foo#12
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,node-name=foo#12: Invalid node name
=== Device without drive ===
Testing: -device VIRTIO_SCSI -device scsi-hd
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) QEMU_PROG: -device scsi-hd: drive property not set
=== Overriding backing file ===
Testing: -drive file=TEST_DIR/t.qcow2,driver=qcow2,backing.file.filename=TEST_DIR/t.qcow2.orig,if=none,id=drive0 -nodefaults
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) info block
drive0 (NODE_NAME): json:{"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2.orig"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2"}} (qcow2)
Removable device: not locked, tray closed
Cache mode: writeback
Backing file: TEST_DIR/t.qcow2.orig (chain depth: 1)
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,driver=raw,backing.file.filename=TEST_DIR/t.qcow2.orig
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,driver=raw,backing.file.filename=TEST_DIR/t.qcow2.orig: Driver doesn't support backing files
Testing: -drive file=TEST_DIR/t.qcow2,file.backing.driver=file,file.backing.filename=TEST_DIR/t.qcow2.orig
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=file,file.backing.filename=TEST_DIR/t.qcow2.orig: Driver doesn't support backing files
Testing: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.file.filename=TEST_DIR/t.qcow2.orig
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.backing.driver=qcow2,file.backing.file.filename=TEST_DIR/t.qcow2.orig: Driver doesn't support backing files
=== Enable and disable lazy refcounting on the command line, plus some invalid values ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=: Parameter 'lazy-refcounts' expects 'on' or 'off'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=42
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=42: Parameter 'lazy-refcounts' expects 'on' or 'off'
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=foo
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=foo: Parameter 'lazy-refcounts' expects 'on' or 'off'
=== With version 2 images enabling lazy refcounts must fail ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=on: Lazy refcounts require a qcow2 image with at least qemu 1.1 compatibility level
Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,lazy-refcounts=off
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
=== No medium ===
Testing: -drive if=virtio
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) QEMU_PROG: -drive if=virtio: Device needs media, but drive is empty
=== Attach to node in non-default iothread ===
=== Read-only ===
Testing: -drive file=TEST_DIR/t.qcow2,if=virtio,readonly=on
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
=== Cache modes ===
Testing: -drive driver=null-co,read-zeroes=on,cache=none
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive driver=null-co,read-zeroes=on,cache=directsync
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive driver=null-co,read-zeroes=on,cache=writeback
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive driver=null-co,read-zeroes=on,cache=writethrough
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive driver=null-co,read-zeroes=on,cache=unsafe
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive driver=null-co,cache=invalid_value
QEMU_PROG: -drive driver=null-co,cache=invalid_value: invalid cache option
Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) info block
drive0 (NODE_NAME): json:{"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2.base"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2"}} (qcow2)
Removable device: not locked, tray closed
Cache mode: writeback
Backing file: TEST_DIR/t.qcow2.base (chain depth: 1)
(qemu) info block file
file: TEST_DIR/t.qcow2 (file)
Cache mode: writeback
(qemu) info block backing
backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
Cache mode: writeback, ignore flushes
(qemu) info block backing-file
backing-file: TEST_DIR/t.qcow2.base (file, read-only)
Cache mode: writeback, ignore flushes
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) info block
drive0 (NODE_NAME): json:{"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2.base"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2"}} (qcow2)
Removable device: not locked, tray closed
Cache mode: writethrough
Backing file: TEST_DIR/t.qcow2.base (chain depth: 1)
(qemu) info block file
file: TEST_DIR/t.qcow2 (file)
Cache mode: writeback
(qemu) info block backing
backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
Cache mode: writeback, ignore flushes
(qemu) info block backing-file
backing-file: TEST_DIR/t.qcow2.base (file, read-only)
Cache mode: writeback, ignore flushes
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) info block
drive0 (NODE_NAME): json:{"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2.base"}}, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2"}} (qcow2)
Removable device: not locked, tray closed
Cache mode: writeback, ignore flushes
Backing file: TEST_DIR/t.qcow2.base (chain depth: 1)
(qemu) info block file
file: TEST_DIR/t.qcow2 (file)
Cache mode: writeback, ignore flushes
(qemu) info block backing
backing: TEST_DIR/t.qcow2.base (qcow2, read-only)
Cache mode: writeback, ignore flushes
(qemu) info block backing-file
backing-file: TEST_DIR/t.qcow2.base (file, read-only)
Cache mode: writeback, ignore flushes
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0 -nodefaults
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value,backing.file.filename=TEST_DIR/t.qcow2.base,backing.cache.no-flush=on,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,if=none,id=drive0: invalid cache option
=== Specifying the protocol layer ===
Testing: -drive file=TEST_DIR/t.qcow2,file.driver=file
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
=== Leaving out required options ===
Testing: -drive driver=file
QEMU_PROG: -drive driver=file: The 'file' block driver requires a file name
Testing: -drive driver=file,filename=
QEMU_PROG: -drive driver=file,filename=: The 'file' block driver requires a file name
Testing: -drive driver=nbd
QEMU_PROG: -drive driver=nbd: NBD server address missing
Testing: -drive driver=raw
QEMU_PROG: -drive driver=raw: A block device must be specified for "file"
Testing: -drive file.driver=file
QEMU_PROG: -drive file.driver=file: The 'file' block driver requires a file name
Testing: -drive file.driver=nbd
QEMU_PROG: -drive file.driver=nbd: NBD server address missing
Testing: -drive file.driver=raw
QEMU_PROG: -drive file.driver=raw: A block device must be specified for "file"
Testing: -drive foo=bar
QEMU_PROG: -drive foo=bar: Must specify either driver or file
=== Specifying both an option and its legacy alias ===
Testing: -drive file=TEST_DIR/t.qcow2,iops=1234,throttling.iops-total=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops=1234,throttling.iops-total=5678: 'throttling.iops-total' and its alias 'iops' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,iops_rd=1234,throttling.iops-read=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_rd=1234,throttling.iops-read=5678: 'throttling.iops-read' and its alias 'iops_rd' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,iops_wr=1234,throttling.iops-write=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_wr=1234,throttling.iops-write=5678: 'throttling.iops-write' and its alias 'iops_wr' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,bps=1234,throttling.bps-total=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=1234,throttling.bps-total=5678: 'throttling.bps-total' and its alias 'bps' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,bps_rd=1234,throttling.bps-read=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_rd=1234,throttling.bps-read=5678: 'throttling.bps-read' and its alias 'bps_rd' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,bps_wr=1234,throttling.bps-write=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_wr=1234,throttling.bps-write=5678: 'throttling.bps-write' and its alias 'bps_wr' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,iops_max=1234,throttling.iops-total-max=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_max=1234,throttling.iops-total-max=5678: 'throttling.iops-total-max' and its alias 'iops_max' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,iops_rd_max=1234,throttling.iops-read-max=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_rd_max=1234,throttling.iops-read-max=5678: 'throttling.iops-read-max' and its alias 'iops_rd_max' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,iops_wr_max=1234,throttling.iops-write-max=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_wr_max=1234,throttling.iops-write-max=5678: 'throttling.iops-write-max' and its alias 'iops_wr_max' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,bps_max=1234,throttling.bps-total-max=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_max=1234,throttling.bps-total-max=5678: 'throttling.bps-total-max' and its alias 'bps_max' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,bps_rd_max=1234,throttling.bps-read-max=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_rd_max=1234,throttling.bps-read-max=5678: 'throttling.bps-read-max' and its alias 'bps_rd_max' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,bps_wr_max=1234,throttling.bps-write-max=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_wr_max=1234,throttling.bps-write-max=5678: 'throttling.bps-write-max' and its alias 'bps_wr_max' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,iops_size=1234,throttling.iops-size=5678
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops_size=1234,throttling.iops-size=5678: 'throttling.iops-size' and its alias 'iops_size' can't be used at the same time
Testing: -drive file=TEST_DIR/t.qcow2,readonly=on,read-only=off
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,readonly=on,read-only=off: 'read-only' and its alias 'readonly' can't be used at the same time
=== Catching negative/large throttling values ===
Testing: -drive file=TEST_DIR/t.qcow2,iops=-1
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,iops=-1: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,bps=-2
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=-2: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,bps_rd=-3
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_rd=-3: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,bps_rd_max=-3
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps_rd_max=-3: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,throttling.iops-total=-4
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,throttling.iops-total=-4: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,throttling.bps-total=-5
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,throttling.bps-total=-5: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,bps=0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,bps=1
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,bps=1000000000000000
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,bps=1000000000000001
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=1000000000000001: bps/iops/max values must be within [0, 1000000000000000]
Testing: -drive file=TEST_DIR/t.qcow2,bps=9999999999999999
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,bps=9999999999999999: bps/iops/max values must be within [0, 1000000000000000]
=== Parsing protocol from file name ===
Testing: -hda foo:bar
QEMU_PROG: -hda foo:bar: Unknown protocol 'foo'
Testing: -drive file=foo:bar
QEMU_PROG: -drive file=foo:bar: Unknown protocol 'foo'
Testing: -drive file.filename=foo:bar
QEMU_PROG: -drive file.filename=foo:bar: Could not open 'foo:bar': No such file or directory
Testing: -hda file:TEST_DIR/t.qcow2
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=file:TEST_DIR/t.qcow2
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file.filename=file:TEST_DIR/t.qcow2
QEMU_PROG: -drive file.filename=file:TEST_DIR/t.qcow2: Could not open 'file:TEST_DIR/t.qcow2': No such file or directory
=== Snapshot mode ===
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,snapshot=on,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file.filename=TEST_DIR/t.qcow2,driver=qcow2,if=none,id=drive0 -snapshot
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file=file:TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file=file:TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0 -snapshot
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
read 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Testing: -drive file=TEST_DIR/t.qcow2,snapshot=off,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x22 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) quit
read 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) qemu-io drive0 "write -P 0x33 0 4k"
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
(qemu) commit drive0
(qemu) quit
read 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Testing: -drive driver=null-co,snapshot=on
QEMU_PROG: -drive driver=null-co,snapshot=on: Could not get temporary filename: No such file or directory
Testing: -drive file=TEST_DIR/t.qcow2,snapshot=on,read-only=on,if=none,id=drive0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) info block
drive0 (NODE_NAME): json:{"backing": {"driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/t.qcow2"}}, "driver": "qcow2", "file": {"driver": "file", "filename": SNAPSHOT_PATH}} (qcow2, read-only)
Removable device: not locked, tray closed
Cache mode: writeback, ignore flushes
Backing file: TEST_DIR/t.qcow2 (chain depth: 1)
(qemu) quit
*** done
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