Re: [Qemu-block] Failing QEMU iotest 175

[Thomas Huth]

On 10/05/2019 15.54, Max Reitz wrote:
> On 28.04.19 17:18, Thomas Huth wrote:
>> QEMU iotest 175 is failing for me when I run it with -raw:
>>
>> $ ./check -raw 175
>> QEMU          --
>> "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64"
>> -nodefaults -machine accel=qtest
>> QEMU_IMG      --
>> "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-img"
>> QEMU_IO       --
>> "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-io"  --cache
>> writeback -f raw
>> QEMU_NBD      --
>> "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-nbd"
>> IMGFMT        -- raw
>> IMGPROTO      -- file
>> PLATFORM      -- Linux/x86_64 thuth 3.10.0-957.10.1.el7.x86_64
>> TEST_DIR      -- /home/thuth/tmp/qemu-build/tests/qemu-iotests/scratch
>> SOCKET_SCM_HELPER --
>> /home/thuth/tmp/qemu-build/tests/qemu-iotests/socket_scm_helper
>>
>> 175         - output mismatch (see 175.out.bad)
>> --- /home/thuth/devel/qemu/tests/qemu-iotests/175.out        2019-04-23
>> 16:43:12.000000000 +0200
>> +++ /home/thuth/tmp/qemu-build/tests/qemu-iotests/175.out.bad        
>> 2019-04-28
>> 17:17:32.000000000 +0200
>> @@ -2,17 +2,17 @@
>>
>>  == creating image with default preallocation ==
>>  Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
>> -size=1048576, blocks=0
>> +size=1048576, blocks=2
>>
>>  == creating image with preallocation off ==
>>  Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 preallocation=off
>> -size=1048576, blocks=0
>> +size=1048576, blocks=2
>>
>>  == creating image with preallocation full ==
>>  Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 preallocation=full
>> -size=1048576, blocks=2048
>> +size=1048576, blocks=2050
>>
>>  == creating image with preallocation falloc ==
>>  Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
>> preallocation=falloc
>> -size=1048576, blocks=2048
>> +size=1048576, blocks=2050
>>   *** done
>> Failures: 175
>> Failed 1 of 1 tests
>>
>> Any ideas how to fix this?
> 
> Hm.  What output does
> 
> $ touch foo
> $ stat -c "size=%s, blocks=%b" foo
> $ truncate -s 1M foo
> $ stat -c "size=%s, blocks=%b" foo
> 
> give for you?
> 
> If any of that returns blocks=2, we can probably just use that operation
> to fix the result, then.

$ stat -c "size=%s, blocks=%b" foo
size=0, blocks=2
$ truncate -s 1M foo
$ stat -c "size=%s, blocks=%b" foo
size=1048576, blocks=2

 Thomas

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