linux-ext4 - Re: [PATCHv3 1/2] aio-dio-write-verify: Add sync and noverify option

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Message-ID: <20231209050616.lcbfxdbqlgcskh3c@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com>
Date: Sat, 9 Dec 2023 13:06:16 +0800
From: Zorro Lang <zlang@...hat.com>
To: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Cc: fstests@...r.kernel.org, linux-ext4@...r.kernel.org,
	Jan Kara <jack@...e.cz>, Gao Xiang <hsiangkao@...ux.alibaba.com>,
	Ojaswin Mujoo <ojaswin@...ux.ibm.com>
Subject: Re: [PATCHv3 1/2] aio-dio-write-verify: Add sync and noverify option

On Mon, Nov 20, 2023 at 04:49:33PM +0530, Ritesh Harjani (IBM) wrote:
> This patch adds -S for O_SYNC and -N for noverify option to
> aio-dio-write-verify test. We will use this for integrity
> verification test for aio-dio.
> 
> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
> ---

This version is good to me,
Reviewed-by: Zorro Lang <zlang@...hat.com>

>  src/aio-dio-regress/aio-dio-write-verify.c | 29 ++++++++++++++++------
>  1 file changed, 21 insertions(+), 8 deletions(-)
> 
> diff --git a/src/aio-dio-regress/aio-dio-write-verify.c b/src/aio-dio-regress/aio-dio-write-verify.c
> index dabbfacd..a7ca8307 100644
> --- a/src/aio-dio-regress/aio-dio-write-verify.c
> +++ b/src/aio-dio-regress/aio-dio-write-verify.c
> @@ -34,13 +34,16 @@
>  
>  void usage(char *progname)
>  {
> -	fprintf(stderr, "usage: %s [-t truncsize ] <-a size=N,off=M [-a ...]>  filename\n"
> +	fprintf(stderr, "usage: %s [-t truncsize ] <-a size=N,off=M [-a ...]>  [-S] [-N] filename\n"
>  	        "\t-t truncsize: truncate the file to a special size before AIO wirte\n"
>  	        "\t-a: specify once AIO write size and startoff, this option can be specified many times, but less than 128\n"
>  	        "\t\tsize=N: AIO write size\n"
>  	        "\t\toff=M:  AIO write startoff\n"
> -	        "e.g: %s -t 4608 -a size=4096,off=512 -a size=4096,off=4608 filename\n",
> -	        progname, progname);
> +			"\t-S: uses O_SYNC flag for open. By default O_SYNC is not used\n"
> +			"\t-N: no_verify: means no write verification. By default noverify is false\n"
> +	        "e.g: %s -t 4608 -a size=4096,off=512 -a size=4096,off=4608 filename\n"
> +	        "e.g: %s -t 1048576 -a size=1048576 -S -N filename\n",
> +	        progname, progname, progname);
>  	exit(1);
>  }
>  
> @@ -292,8 +295,10 @@ int main(int argc, char *argv[])
>  	char *filename = NULL;
>  	int num_events = 0;
>  	off_t tsize = 0;
> +	int o_sync = 0;
> +	int no_verify = 0;
>  
> -	while ((c = getopt(argc, argv, "a:t:")) != -1) {
> +	while ((c = getopt(argc, argv, "a:t:SN")) != -1) {
>  		char *endp;
>  
>  		switch (c) {
> @@ -308,6 +313,12 @@ int main(int argc, char *argv[])
>  		case 't':
>  			tsize = strtoul(optarg, &endp, 0);
>  			break;
> +		case 'S':
> +			o_sync = O_SYNC;
> +			break;
> +		case 'N':
> +			no_verify = 1;
> +			break;
>  		default:
>  			usage(argv[0]);
>  		}
> @@ -324,7 +335,7 @@ int main(int argc, char *argv[])
>  	else
>  		usage(argv[0]);
>  
> -	fd = open(filename, O_DIRECT | O_CREAT | O_TRUNC | O_RDWR, 0600);
> +	fd = open(filename, O_DIRECT | O_CREAT | O_TRUNC | O_RDWR | o_sync, 0600);
>  	if (fd == -1) {
>  		perror("open");
>  		return 1;
> @@ -342,9 +353,11 @@ int main(int argc, char *argv[])
>  		return 1;
>  	}
>  
> -	if (io_verify(fd) != 0) {
> -		fprintf(stderr, "Data verification fails\n");
> -		return 1;
> +	if (no_verify == 0) {
> +		if (io_verify(fd) != 0) {
> +			fprintf(stderr, "Data verification fails\n");
> +			return 1;
> +		}
>  	}
>  
>  	close(fd);
> -- 
> 2.41.0
> 
>