Re: [LTP] [PATCH V2] open_posix:aio_fsync:14-1: wait for aio_writecompletion

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 07/24/2012 04:49 PM, Nitin Yadav wrote:
> Thanks for your quick reply :-)

You are always welcome.

Wanlong Gao

> 
> Thanks,
> Nitin Yadav
> 
> -----Original Message-----
> From: Wanlong Gao [mailto:gaowanlong@cn.fujitsu.com] 
> Sent: Tuesday, July 24, 2012 1:49 PM
> To: Nitin Yadav
> Cc: LTP
> Subject: Re: [LTP] [PATCH V2] open_posix:aio_fsync:14-1: wait for
> aio_writecompletion
> 
> On 07/24/2012 03:16 PM, Nitin Yadav wrote:
>> Hi Wanlong,
>>  Even I am getting error io_fsync write: Invalid argument, while
> running
>> io test cases on linux 3.2 kernel.Below are the outputs for error.
>>
>> aio02/aio_tio    0  TINFO  :  Running test 1
>>
>> aio02/aio_tio    0  TINFO  :  Running test 2
>>
>> aio02/aio_tio    0  TINFO  :  Running test 3
>>
>> aio02/aio_tio    0  TINFO  :  Running test 4
>>
>> aio02/aio_tio    0  TINFO  :  Running test 5
>>
>> aio02/aio_tio    0  TINFO  :  Running test 6
>>
>> aio02/aio_tio    0  TINFO  :  Running test 7
>>
>> io_fsync write: Invalid argument 
>>
> 
> io_fsync() calls the syscall io_submit().
> when doing IO_CMD_FSYNC and IO_CMD_FDSYNC, Linux kernel
> will involve the filesystem's aio_fsync and aio_fdsync
> operations, and if the filesystem doesn't implement
> these two operations, it will return -EINVAL, this is
> the error you meet here.
> In fact, the syscall io_submit() in kernel is asynchronous,
> and the performance is better than adding a outstanding
> asynchronous aio_* operations.
> In general, this CMD is not implemented in Linux kernel.
> 
> Thanks,
> Wanlong Gao
> 
> 
>>
>> Could you please suggest me some pointer.
>>
>> Thanks!
>> Nitin yadav
>>
>> -----Original Message-----
>> From: Wanlong Gao [mailto:gaowanlong@cn.fujitsu.com] 
>> Sent: Tuesday, July 24, 2012 11:29 AM
>> To: LTP
>> Subject: [LTP] [PATCH V2] open_posix:aio_fsync:14-1: wait for
>> aio_writecompletion
>>
>> Wait for aio_write() completion.
>> If aio_fsync() sync the fd without the previous aio_write()
>> completion, it will cause Segment Fault.
>>
>> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
>> ---
>>  .../conformance/interfaces/aio_fsync/14-1.c                    | 10
>> ++++++++++
>>  1 file changed, 10 insertions(+)
>>
>> diff --git
>>
> a/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/14-1.c
>>
> b/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/14-1.c
>> index a9cd3bf..02ba8a5 100644
>> ---
>>
> a/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/14-1.c
>> +++
>>
> b/testcases/open_posix_testsuite/conformance/interfaces/aio_fsync/14-1.c
>> @@ -27,6 +27,7 @@ int main()
>>  #define BUF_SIZE 111
>>  	char buf[BUF_SIZE];
>>  	int fd;
>> +	int ret;
>>  	struct aiocb aiocb_write;
>>  	struct aiocb aiocb_fsync;
>>  
>> @@ -57,6 +58,15 @@ int main()
>>  		exit(PTS_FAIL);
>>  	}
>>  
>> +	do {
>> +		usleep(10000);
>> +		ret = aio_error(&aiocb_write);
>> +	} while (ret == EINPROGRESS);
>> +	if (ret < 0) {
>> +		printf(TNAME " Error at aio_error() : %s\n",
>> strerror(ret));
>> +		exit(PTS_FAIL);
>> +	}
>> +
>>  	memset(&aiocb_fsync, 0, sizeof(aiocb_fsync));
>>  	aiocb_fsync.aio_fildes = fd;
>>  
>>
> 
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