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qemu/tests/qemu-iotests/142.out
Kevin Wolf 5dbd0ce115 file-posix: Fix alignment after reopen changing O_DIRECT 
At the end of a reopen, we already call bdrv_refresh_limits(), which
should update bs->request_alignment according to the new file
descriptor. However, raw_probe_alignment() relies on s->needs_alignment
and just uses 1 if it isn't set. We neglected to update this field, so
starting with cache=writeback and then reopening with cache=none means
that we get an incorrect bs->request_alignment == 1 and unaligned
requests fail instead of being automatically aligned.

Fix this by recalculating s->needs_alignment in raw_refresh_limits()
before calling raw_probe_alignment().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211104113109.56336-1-kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-13-kwolf@redhat.com>
[hreitz: Fix iotest 142 for block sizes greater than 512 by operating on
         a file with a size of 1 MB]
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211116101431.105252-1-hreitz@redhat.com>
2021-11-16 11:30:29 +01:00

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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 backing_fmt=IMGFMT
=== 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) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit
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
--- Alignment after changing O_DIRECT ---
Formatting 'TEST_DIR/t.IMGFMT', fmt=file size=1048576
wrote 4096/4096 bytes at offset 0
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 42/42 bytes at offset 42
42 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 42/42 bytes at offset 42
42 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 42/42 bytes at offset 42
42 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 42/42 bytes at offset 42
42 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 42/42 bytes at offset 42
42 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 42/42 bytes at offset 42
42 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
*** done
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