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-QA output created by 142
-Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728
-Formatting 'TEST_DIR/t.IMGFMT.snap', fmt=IMGFMT size=134217728
-Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base
-
-=== Simple test for all cache modes ===
-
-Testing: -drive file=TEST_DIR/t.qcow2,cache=none
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
-QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qququiquit
-
-Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value
-QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value: invalid cache option
-
-
-=== Check inheritance of cache modes ===
-
-
---- Configure cache modes on the command line ---
-
-cache.direct=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
-
-
-cache.writeback=off on none0
- Cache mode: writethrough
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-cache.writeback=off on backing
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
-
-cache.writeback=off on backing-file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-
-cache.no-flush=on on none0
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
-
-cache.no-flush=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
-
-cache.no-flush=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
-
---- Cache modes after reopen (live snapshot) ---
-
-cache.direct=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
-
-
-cache.writeback=off on none0
- Cache mode: writethrough
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-cache.writeback=off on backing
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
-
-cache.writeback=off on backing-file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-
-cache.no-flush=on on none0
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
-
-cache.no-flush=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
-
-cache.no-flush=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
-
---- Change cache modes with reopen (qemu-io command, flags) ---
-
-cache.direct=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-
-cache.writeback=off on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.writeback=off on file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-cache.writeback=off on backing
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
-
-cache.writeback=off on backing-file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-
-cache.no-flush=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.no-flush=on on file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.no-flush=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
-
-cache.no-flush=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
-
---- Change cache modes with reopen (qemu-io command, options) ---
-
-cache.direct=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-
-cache.writeback=off on none0
- Cache mode: writethrough, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.writeback=off on file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-cache.writeback=off on backing
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
-
-cache.writeback=off on backing-file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-
-cache.no-flush=on on none0
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
-
-cache.no-flush=on on file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.no-flush=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
-
-cache.no-flush=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
-
---- Change cache modes after snapshot ---
-
-cache.direct=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
-
-
-cache.writeback=off on none0
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-cache.writeback=off on backing
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
-
-cache.writeback=off on backing-file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-
-cache.no-flush=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
-
-cache.no-flush=on on file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
-
-cache.no-flush=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
-
---- Change cache mode in parent, child has explicit option in JSON ---
-
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, ignore flushes
-
-=== Check that referenced BDSes don't inherit ===
-
-
---- Configure cache modes on the command line ---
-
-cache.direct=on on blk
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on file
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
-
-cache.direct=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
-
-
-cache.writeback=off on blk
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-
-cache.no-flush=on on blk
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on file
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
-
-cache.no-flush=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
-
---- Cache modes after reopen (live snapshot) ---
-
-cache.direct=on on blk
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
-
-cache.direct=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
-
-
-cache.writeback=off on blk
- Cache mode: writethrough
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-
-cache.no-flush=on on blk
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
-
-cache.no-flush=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
-
---- Change cache modes with reopen (qemu-io command, flags) ---
-
-cache.direct=on on blk
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on file
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
-
-cache.direct=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback
-
-cache.direct=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
-
-
-cache.writeback=off on blk
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on backing
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.writeback=off on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-
-cache.no-flush=on on blk
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on file
- Cache mode: writeback, direct
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
- Cache mode: writeback
-
-cache.no-flush=on on backing
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback
-
-cache.no-flush=on on backing-file
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
-
-=== Reopening children instead of the root ===
-
-
---- Basic reopen ---
-
-cache.direct=on on none0
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.direct=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-
-cache.writeback=off on none0
- Cache mode: writethrough
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.writeback=off on file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-cache.writeback=off on backing
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Block format 'qcow2' does not support the option 'cache.writeback'
-
-cache.writeback=off on backing-file
-QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Block protocol 'file' doesn't support the option 'cache.writeback'
-
-
-cache.no-flush=on on none0
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
-
-cache.no-flush=on on file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, ignore flushes
- Cache mode: writeback, direct
- Cache mode: writeback, direct
-
-cache.no-flush=on on backing
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct, ignore flushes
- Cache mode: writeback, direct, ignore flushes
-
-cache.no-flush=on on backing-file
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, direct, ignore flushes
-
---- Change cache mode after reopening child ---
-
- Cache mode: writeback, direct
- Cache mode: writeback
- Cache mode: writeback, direct
- Cache mode: writeback, ignore flushes
-*** done