Re: [Qemu-devel] [PATCH v4 03/38] block: Use warn_report() & friends to report warnings

[Kevin Wolf <kwolf@redhat.com>]

Am 17.10.2018 um 10:26 hat Markus Armbruster geschrieben:
> Calling error_report() in a function that takes an Error ** argument
> is suspicious.  Convert a few that are actually warnings to
> warn_report().
> 
> While there, split warnings consisting of multiple sentences to
> conform to conventions spelled out in warn_report()'s contract, and
> improve a rather useless warning in sheepdog.c.
> 
> Cc: Kevin Wolf <kwolf@redhat.com>
> Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Peter Lieven <pl@kamp.de>
> Cc: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
> Cc: Liu Yuan <namei.unix@gmail.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  block/bochs.c    |  8 ++++----
>  block/cloop.c    |  8 ++++----
>  block/dmg.c      |  8 ++++----
>  block/iscsi.c    |  2 +-
>  block/rbd.c      | 12 ++++++------
>  block/sheepdog.c |  2 +-
>  block/vvfat.c    |  8 ++++----
>  7 files changed, 24 insertions(+), 24 deletions(-)
> 
> diff --git a/block/bochs.c b/block/bochs.c
> index 50c630047b..36c1b45bd2 100644
> --- a/block/bochs.c
> +++ b/block/bochs.c
> @@ -112,10 +112,10 @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags,
>      }
>  
>      if (!bdrv_is_read_only(bs)) {
> -        error_report("Opening bochs images without an explicit read-only=on "
> -                     "option is deprecated. Future versions will refuse to "
> -                     "open the image instead of automatically marking the "
> -                     "image read-only.");
> +        warn_report("Opening bochs images without an explicit read-only=on "
> +                    "option is deprecated");
> +        error_printf("Future versions may refuse to open the image "
> +                     "instead of automatically marking it read-only.\n");
>          ret = bdrv_set_read_only(bs, true, errp); /* no write support yet */
>          if (ret < 0) {
>              return ret;

While I agree with your intention, it would be best to leave all of the
!bdrv_is_read_only() warnings alone. My series "[PATCH v2 0/8] block:
Add auto-read-only option" gets rid of the message entirely, so this
would only add a merge conflict.

Kevin