Re: [Qemu-devel] [PATCH v2 01/20] nbd: produce a better error if neither host nor port is passed

[Paolo Bonzini <pbonzini@redhat.com>]

Il 14/02/2014 17:54, Jeff Cody ha scritto:
> On Tue, Feb 11, 2014 at 06:03:34PM +0100, Paolo Bonzini wrote:
>> Before:
>>     $ qemu-io-old
>>     qemu-io-old> open -r -o file.driver=nbd
>>     qemu-io-old: can't open device (null): Could not open image: Invalid argument
>>     $ ./qemu-io-old
>>     qemu-io-old> open -r -o file.driver=nbd,file.host=foo,file.path=bar
>>     path and host may not be used at the same time.
>>     qemu-io-old: can't open device (null): Could not open image: Invalid argument
>>
>> After:
>>     $ ./qemu-io
>>     qemu-io> open -r -o file.driver=nbd
>>     one of path and host must be specified.
>>     qemu-io: can't open device (null): Could not open image: Invalid argument
>>     $ ./qemu-io
>>     qemu-io> open -r -o file.driver=nbd,file.host=foo,file.path=bar
>>     path and host may not be used at the same time.
>>     qemu-io: can't open device (null): Could not open image: Invalid argument
>>
>
> This breaks test 051, which is parsing the error output.  Could you
> also update 051.out in this patch?  This should fix it:
>
>
> diff --git tests/qemu-iotests/051.out tests/qemu-iotests/051.out
> index 30e2dbd..7de1870 100644
> --- tests/qemu-iotests/051.out
> +++ tests/qemu-iotests/051.out
> @@ -231,7 +231,7 @@ Testing: -drive driver=file
>  QEMU_PROG: -drive driver=file: could not open disk image ide0-hd0: The 'file' block driver requires a file name
>
>  Testing: -drive driver=nbd
> -QEMU_PROG: -drive driver=nbd: could not open disk image ide0-hd0: Could not open image: Invalid argument
> +QEMU_PROG: -drive driver=nbd: could not open disk image ide0-hd0: one of path and host must be specified.
>
>  Testing: -drive driver=raw
>  QEMU_PROG: -drive driver=raw: could not open disk image ide0-hd0: Can't use 'raw' as a block driver for the protocol level
> @@ -240,7 +240,7 @@ Testing: -drive file.driver=file
>  QEMU_PROG: -drive file.driver=file: could not open disk image ide0-hd0: The 'file' block driver requires a file name
>
>  Testing: -drive file.driver=nbd
> -QEMU_PROG: -drive file.driver=nbd: could not open disk image ide0-hd0: Could not open image: Invalid argument
> +QEMU_PROG: -drive file.driver=nbd: could not open disk image ide0-hd0: one of path and host must be specified.
>
>  Testing: -drive file.driver=raw
>  QEMU_PROG: -drive file.driver=raw: could not open disk image ide0-hd0: Can't use 'raw' as a block driver for the protocol level

Thanks, I was working on an older checkout.  Fixed and tested now.

Paolo

>
>> Next patch will fix the error propagation.
>>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>> ---
>>  block/nbd.c | 13 ++++++-------
>>  1 file changed, 6 insertions(+), 7 deletions(-)
>>
>> diff --git a/block/nbd.c b/block/nbd.c
>> index 327e913..fd89083 100644
>> --- a/block/nbd.c
>> +++ b/block/nbd.c
>> @@ -192,19 +192,18 @@ static int nbd_config(BDRVNBDState *s, QDict *options, char **export)
>>  {
>>      Error *local_err = NULL;
>>
>> -    if (qdict_haskey(options, "path")) {
>> -        if (qdict_haskey(options, "host")) {
>> +    if (qdict_haskey(options, "path") == qdict_haskey(options, "host")) {
>> +        if (qdict_haskey(options, "path")) {
>>              qerror_report(ERROR_CLASS_GENERIC_ERROR, "path and host may not "
>>                            "be used at the same time.");
>> -            return -EINVAL;
>> +        } else {
>> +            qerror_report(ERROR_CLASS_GENERIC_ERROR, "one of path and host "
>> +                          "must be specified.");
>>          }
>> -        s->client.is_unix = true;
>> -    } else if (qdict_haskey(options, "host")) {
>> -        s->client.is_unix = false;
>> -    } else {
>>          return -EINVAL;
>>      }
>>
>> +    s->client.is_unix = qdict_haskey(options, "path");
>>      s->socket_opts = qemu_opts_create(&socket_optslist, NULL, 0,
>>                                        &error_abort);
>>
>> --
>> 1.8.5.3
>>
>>
>>
>
>