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Date: Tue, 14 Aug 2012 11:49:40 -0300
From: Luiz Capitulino <lcapitulino@redhat.com>
Message-ID: <20120814114940.68c296c7@doriath.home>
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Subject: Re: [Qemu-devel] [PATCH] block-migration: deprecate block migration
 for the 1.2 release
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To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

On Tue, 14 Aug 2012 08:32:31 -0500
Anthony Liguori <aliguori@us.ibm.com> wrote:

> To be replaced with live block copy.
> 
> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
> ---
>  migration.c |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)
> 
> diff --git a/migration.c b/migration.c
> index 653a3c1..babccf4 100644
> --- a/migration.c
> +++ b/migration.c
> @@ -482,10 +482,19 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk,
>      MigrationParams params;
>      const char *p;
>      int ret;
> +    static bool suppress_deprecation_message;
>  
>      params.blk = blk;
>      params.shared = inc;
>  
> +    if (blk && !suppress_deprecation_message) {
> +        qerror_report(ERROR_CLASS_GENERIC_ERROR,
> +                      "Block migration is deprecated.  "
> +                      "See http://wiki.qemu.org/Features/LiveBlockCopy "
> +                      "for an alternative syntax.");

Why not error_set()?

> +        suppress_deprecation_message = true;
> +    }
> +
>      if (s->state == MIG_STATE_ACTIVE) {
>          error_set(errp, QERR_MIGRATION_ACTIVE);
>          return;