Re: [PATCH] nfsrahead: fix and improve logging.

[Steve Dickson <steved@xxxxxxxxxx>]

On 4/29/22 12:36 PM, Thiago Becker wrote:
> Logging was not working properly wrt verbosity, it is changed by
> changing the facilities used. While at logging, add some extra logs when
> verbose that may be important.
>
> Signed-off-by: Thiago Becker <tbecker@xxxxxxxxxx>
Committed...

steved.
> ---
>   tools/nfsrahead/main.c | 19 +++++++++++--------
>   1 file changed, 11 insertions(+), 8 deletions(-)
>
> diff --git a/tools/nfsrahead/main.c b/tools/nfsrahead/main.c
> index 83a389f7..5fae941c 100644
> --- a/tools/nfsrahead/main.c
> +++ b/tools/nfsrahead/main.c
> @@ -85,8 +85,10 @@ static int get_mountinfo(const char *device_number, struct device_info *device_i
>   
>   	mnttbl = mnt_new_table();
>   
> -	if ((ret = mnt_table_parse_file(mnttbl, mountinfo_path)) < 0)
> +	if ((ret = mnt_table_parse_file(mnttbl, mountinfo_path)) < 0) {
> +		xlog(D_GENERAL, "Failed to parse %s\n", mountinfo_path);
>   		goto out_free_tbl;
> +	}
>   
>   	if ((fs = mnt_table_find_devno(mnttbl, device_info->dev, MNT_ITER_FORWARD)) == NULL) {
>   		ret = ENOENT;
> @@ -130,19 +132,20 @@ static int conf_get_readahead(const char *kind) {
>   	
>   	return readahead;
>   }
> -#define L_DEFAULT (L_WARNING | L_ERROR | L_FATAL)
>   
>   int main(int argc, char **argv)
>   {
>   	int ret = 0, retry;
>   	struct device_info device;
> -	unsigned int readahead = 128, verbose = 0, log_stderr = 0;
> +	unsigned int readahead = 128, log_level, log_stderr = 0;
>   	char opt;
>   
> +
> +	log_level = D_ALL & ~D_GENERAL;
>   	while((opt = getopt(argc, argv, "dF")) != -1) {
>   		switch (opt) {
>   		case 'd':
> -			verbose = 1;
> +			log_level = D_ALL;
>   			break;
>   		case 'F':
>   			log_stderr = 1;
> @@ -154,7 +157,7 @@ int main(int argc, char **argv)
>   
>   	xlog_stderr(log_stderr);
>   	xlog_syslog(~log_stderr);
> -	xlog_config(L_DEFAULT | (L_NOTICE & verbose), 1);
> +	xlog_config(log_level, 1);
>   	xlog_open(CONF_NAME);
>   
>   	// xlog_err causes the system to exit
> @@ -166,12 +169,12 @@ int main(int argc, char **argv)
>   			break;
>   
>   	if (ret != 0) {
> -		xlog(L_ERROR, "unable to find device %s\n", argv[optind]);
> +		xlog(D_GENERAL, "unable to find device %s\n", argv[optind]);
>   		goto out;
>   	}
>   
>   	if (strncmp("nfs", device.fstype, 3) != 0) {
> -		xlog(L_NOTICE,
> +		xlog(D_GENERAL,
>   			"not setting readahead for non supported fstype %s on device %s\n",
>   			device.fstype, argv[optind]);
>   		ret = -EINVAL;
> @@ -180,7 +183,7 @@ int main(int argc, char **argv)
>   
>   	readahead = conf_get_readahead(device.fstype);
>   
> -	xlog(L_WARNING, "setting %s readahead to %d\n", device.mountpoint, readahead);
> +	xlog(D_FAC7, "setting %s readahead to %d\n", device.mountpoint, readahead);
>   
>   	printf("%d\n", readahead);
>