Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-12-18' into staging

Block patches:
- New block filter: preallocate (which, on writes beyond an image file's
end, allocates big c

Merge remote-tracking branch 'remotes/maxreitz/tags/pull-block-2020-12-18' into staging

Block patches:
- New block filter: preallocate (which, on writes beyond an image file's
end, allocates big chunks of data so that such post-EOF writes will
occur less frequently)
- write-zeroes and block-status support for Quorum
- Implementation of truncate for the nvme block driver similarly to the
existing implementations for host block devices and iscsi devices
- Block layer refactoring: Drop the tighten_restrictions concept in the
block permission functions
- iotest fixes

# gpg: Signature made Fri 18 Dec 2020 14:45:30 GMT
# gpg: using RSA key 91BEB60A30DB3E8857D11829F407DB0061D5CF40
# gpg: issuer "mreitz@redhat.com"
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40

* remotes/maxreitz/tags/pull-block-2020-12-18: (30 commits)
iotests: Fix _send_qemu_cmd with bash 5.1
iotests/102: Pass $QEMU_HANDLE to _send_qemu_cmd
block/nvme: Implement fake truncate() coroutine
quorum: Implement bdrv_co_pwrite_zeroes()
quorum: Implement bdrv_co_block_status()
scripts/simplebench: add bench_prealloc.py
simplebench/results_to_text: make executable
simplebench/results_to_text: add difference line to the table
simplebench/results_to_text: improve view of the table
simplebench: move results_to_text() into separate file
simplebench: rename ascii() to results_to_text()
scripts/simplebench: use standard deviation for +- error
scripts/simplebench: support iops
scripts/simplebench: fix grammar: s/successed/succeeded/
iotests: add 298 to test new preallocate filter driver
iotests.py: execute_setup_common(): add required_fmts argument
iotests: qemu_io_silent: support --image-opts
qemu-io: add preallocate mode parameter for truncate command
block: introduce preallocate filter
block: bdrv_check_perm(): process children anyway
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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simplebench/results_to_text: make executable

Make results_to_text a tool to dump results saved in JSON file.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <2020

simplebench/results_to_text: make executable

Make results_to_text a tool to dump results saved in JSON file.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201021145859.11201-21-vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

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simplebench/results_to_text: add difference line to the table

Performance improvements / degradations are usually discussed in
percentage. Let's make the script calculate it for us.

Signed-off-by:

simplebench/results_to_text: add difference line to the table

Performance improvements / degradations are usually discussed in
percentage. Let's make the script calculate it for us.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201021145859.11201-20-vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
[mreitz: 'seconds' instead of 'secs']
Signed-off-by: Max Reitz <mreitz@redhat.com>

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simplebench/results_to_text: improve view of the table

Move to generic format for floats and percentage for error.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id:

simplebench/results_to_text: improve view of the table

Move to generic format for floats and percentage for error.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201021145859.11201-19-vsementsov@virtuozzo.com>
Acked-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

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simplebench: move results_to_text() into separate file

Let's keep view part in separate: this way it's better to improve it in
the following commits.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vs

simplebench: move results_to_text() into separate file

Let's keep view part in separate: this way it's better to improve it in
the following commits.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201021145859.11201-18-vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

show more ...