Re: [Qemu-devel] [PATCH v2 2/8] tests/qemu-iotests/005: Add a sanity check for large sparse file support

[Thomas Huth]

On 01/05/2019 13.08, Alex Bennée wrote:
> 
> Thomas Huth <address@hidden> writes:
> 
>> "check -raw 005" fails when running on ext4 filesystems - these do not
>> support such large sparse files. Use the same check as in test 220 to
>> skip the test in this case.
>>
>> Suggested-by: Eric Blake <address@hidden>
>> Signed-off-by: Thomas Huth <address@hidden>
>> ---
>>  tests/qemu-iotests/005 | 9 +++++++++
>>  1 file changed, 9 insertions(+)
>>
>> diff --git a/tests/qemu-iotests/005 b/tests/qemu-iotests/005
>> index 2fef63af88..6136ced5c8 100755
>> --- a/tests/qemu-iotests/005
>> +++ b/tests/qemu-iotests/005
>> @@ -55,6 +55,15 @@ if [ "$IMGPROTO" = "sheepdog" ]; then
>>      _notrun "image protocol $IMGPROTO does not support large image sizes"
>>  fi
>>
>> +# Sanity check: For raw, we require a file system that permits the creation
>> +# of a HUGE (but very sparse) file.  tmpfs works, ext4 does not.
> 
> Is this comment correct? Running on my ext4 home partition this test
> seems to be running fine and not skipping.
Maybe it depends on the kernel version (I'm still using a 3.10-based
kernel here) or the way how the file system was created? It fails at
least for me on my ext4 partition.
But I can adjust a little bit for sure.

 Thomas