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iotests: Set read-zeroes on in null block driver for Valgrind

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The Valgrind tool reports about the uninitialised buffer 'buf'
instantiated on the stack of the function guess_disk_lchs().
Pass 'read-zeroes=on' to the null block driver to make it deterministic.
The output of the tests 051, 186 and 227 now includes the parameter
'read-zeroes'. So, the benchmark output files are being changed too.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Andrey Shinkevich 2019-07-15 19:07:59 +03:00 • committed by Kevin Wolf
parent 0274f45bde
commit a6862418fe
10 changed files with 111 additions and 109 deletions
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10
tests/qemu-iotests/051.pc.out
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@ -245,23 +245,23 @@ QEMU X.Y.Z monitor - type 'help' for more information
=== Cache modes ===
Testing: -drive driver=null-co,cache=none
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,cache=directsync
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,cache=writeback
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,cache=writethrough
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,cache=unsafe
Testing: -drive driver=null-co,read-zeroes=on,cache=unsafe
QEMU X.Y.Z monitor - type 'help' for more information
(qemu) quit