Re: [Xen-devel] [PATCH v3 5/6] libxl: print message how to recover from xl cpupool-cpu-remove errors

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Mar 03, 2016 at 05:48:49PM +0100, Juergen Gross wrote:
> An error occurring when calling "xl cpupool-cpu-remove" might leave
> the system in a state where a cpu is neither completely free nor in
> a cpupool. This can easily be repaired by adding the cpu via
> "xl cpupool-cpu-add" to the cpupool where it was removed from before.
> Print a message telling this the user in case of an error.
> 
> Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

> ---
>  tools/libxl/xl_cmdimpl.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
> index 990d3c9..411473d 100644
> --- a/tools/libxl/xl_cmdimpl.c
> +++ b/tools/libxl/xl_cmdimpl.c
> @@ -7716,8 +7716,10 @@ int main_cpupoolcpuremove(int argc, char **argv)
>          goto out;
>      }
>  
> -    if (libxl_cpupool_cpuremove_cpumap(ctx, poolid, &cpumap))
> -        fprintf(stderr, "some cpus may not have been removed from %s\n", 
> pool);
> +    if (libxl_cpupool_cpuremove_cpumap(ctx, poolid, &cpumap)) {
> +        fprintf(stderr, "Some cpus may have not or only partially been 
> removed from '%s'.\n", pool);
> +        fprintf(stderr, "If a cpu can't be added to another cpupool, add it 
> to '%s' again and retry.\n", pool);
> +    }
>  
>      rc = EXIT_SUCCESS;
>  
> -- 
> 2.6.2
> 

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