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qemu/tests/qemu-iotests/267.out
Daniel P. Berrangé e26f98e209 block: push error reporting into bdrv_all_*_snapshot functions 
The bdrv_all_*_snapshot functions return a BlockDriverState pointer
for the invalid backend, which the callers then use to report an
error message. In some cases multiple callers are reporting the
same error message, but with slightly different text. In the future
there will be more error scenarios for some of these methods, which
will benefit from fine grained error message reporting. So it is
helpful to push error reporting down a level.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
[PMD: Initialize variables]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210204124834.774401-2-berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2021-02-08 11:19:51 +00:00

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QA output created by 267
=== No block devices at all ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing:
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
Error: No block device supports snapshots
(qemu) info snapshots
No block device supports snapshots
(qemu) loadvm snap0
Error: No block device supports snapshots
(qemu) quit
=== -drive if=none ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
Error: Device 'none0' is writable but does not support snapshots
(qemu) info snapshots
No block device supports snapshots
(qemu) loadvm snap0
Error: Device 'none0' is writable but does not support snapshots
(qemu) quit
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive driver=IMGFMT,file=TEST_DIR/t.IMGFMT,if=none
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive driver=IMGFMT,file=TEST_DIR/t.IMGFMT,if=none -device virtio-blk,drive=none0
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
=== -drive if=virtio ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=virtio
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
Error: Device 'virtio0' is writable but does not support snapshots
(qemu) info snapshots
No block device supports snapshots
(qemu) loadvm snap0
Error: Device 'virtio0' is writable but does not support snapshots
(qemu) quit
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -drive driver=IMGFMT,file=TEST_DIR/t.IMGFMT,if=virtio
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
=== Simple -blockdev ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
Error: Device 'file' is writable but does not support snapshots
(qemu) info snapshots
No block device supports snapshots
(qemu) loadvm snap0
Error: Device 'file' is writable but does not support snapshots
(qemu) quit
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=IMGFMT,file=file,node-name=fmt
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=raw,file=file,node-name=raw -blockdev driver=IMGFMT,file=raw,node-name=fmt
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
=== -blockdev with a filter on top ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=IMGFMT,file=file,node-name=fmt -blockdev driver=copy-on-read,file=fmt,node-name=filter
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
=== -blockdev with a backing file ===
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT.base,node-name=backing-file -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=IMGFMT,file=file,backing=backing-file,node-name=fmt
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT.base,node-name=backing-file -blockdev driver=IMGFMT,file=backing-file,node-name=backing-fmt -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=IMGFMT,file=file,backing=backing-fmt,node-name=fmt
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
Internal snapshots on overlay:
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
1 snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
Internal snapshots on backing file:
=== -blockdev with NBD server on the backing file ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
Testing: -blockdev driver=file,filename=TEST_DIR/t.IMGFMT.base,node-name=backing-file -blockdev driver=IMGFMT,file=backing-file,node-name=backing-fmt -blockdev driver=file,filename=TEST_DIR/t.IMGFMT,node-name=file -blockdev driver=IMGFMT,file=file,backing=backing-fmt,node-name=fmt
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) nbd_server_start unix:SOCK_DIR/nbd
(qemu) nbd_server_add -w backing-fmt
(qemu) savevm snap0
(qemu) info snapshots
List of snapshots present on all disks:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
-- snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
(qemu) loadvm snap0
(qemu) quit
Internal snapshots on overlay:
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
1 snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
Internal snapshots on backing file:
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK ICOUNT
1 snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000
*** done
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