[sheepdog] [PATCH 1/2] sheep: add nosync for testing purpose

[MORITA Kazutaka]

At Tue,  5 Feb 2013 15:41:26 +0800,
Liu Yuan wrote:
> 
> From: Liu Yuan <tailai.ly at taobao.com>
> 
> This is only useful for testing, users are not expected to use it.
> 
> Signed-off-by: Liu Yuan <tailai.ly at taobao.com>
> ---
>  sheep/plain_store.c |    3 ++-
>  sheep/sheep.c       |    4 ++++
>  sheep/sheep_priv.h  |    1 +
>  3 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/sheep/plain_store.c b/sheep/plain_store.c
> index fe08419..53dea60 100644
> --- a/sheep/plain_store.c
> +++ b/sheep/plain_store.c
> @@ -25,7 +25,8 @@ static int get_open_flags(uint64_t oid, bool create, int fl)
>  	int flags = O_DSYNC | O_RDWR;
>  
>  	if ((fl & SD_FLAG_CMD_CACHE && is_disk_cache_enabled()) ||
> -	    uatomic_is_true(&sys->use_journal))
> +	    uatomic_is_true(&sys->use_journal) ||
> +	    sys->nosync == true)
>  		flags &= ~O_DSYNC;
>  
>  	/*
> diff --git a/sheep/sheep.c b/sheep/sheep.c
> index a9b9bdb..06ce7bd 100644
> --- a/sheep/sheep.c
> +++ b/sheep/sheep.c
> @@ -52,6 +52,7 @@ static struct sd_option sheep_options[] = {
>  	{'i', "ioaddr", true, "use separate network card to handle IO requests"},
>  	{'j', "journal", true, "use jouranl file to log all the write operations"},
>  	{'l', "loglevel", true, "specify the level of logging detail"},
> +	{'n', "nosync", true, "drop SYNC for write, only used for testing purpose"},

true should be false.  This option doesn't require an argument.

Thanks,

Kazutaka