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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 11-14-2011, 05:34 PM
Benjamin Marzinski
 
Default multipath: rlookup WWIDs with spaces by alias

On Mon, Nov 14, 2011 at 10:17:54AM +0100, Hannes Reinecke wrote:
> On 11/12/2011 05:54 AM, Benjamin Marzinski wrote:
>> If a WWID contained spaces, the rlookup code wasn't able to look it up
>> by its user_friendly_name, since the code was only reading the wwid till
>> the first space. It now reads to the end of the line.
>>
>> Signed-off-by: Benjamin Marzinski<bmarzins@redhat.com>
>> ---
>> libmultipath/alias.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> Index: multipath-tools-110412/libmultipath/alias.c
>> ================================================== =================
>> --- multipath-tools-110412.orig/libmultipath/alias.c
>> +++ multipath-tools-110412/libmultipath/alias.c
>> @@ -288,7 +288,7 @@ rlookup_binding(FILE *f, char **map_wwid
>> curr_id = scan_devname(alias, NULL); /* TBD: Why this call? */
>> if (curr_id>= id)
>> id = curr_id + 1;
>> - wwid = strtok(NULL, " ");
>> + wwid = strtok(NULL, "");
>> if (!wwid){
>> condlog(3,
>> "Ignoring malformed line %u in bindings file",
>>
> Please, don't.
>
> We keep on changing this one back and forth about every year.
> (The original patch was by you, back in 2008. Then I changed it back
> because it breaks compability with existing configuration files. Now you go
> and change it _again_).
>
> The real problem here is
>
> 'If the WWID contains spaces'
>
> The WWID _never_ should contain spaces. I pretty certain we can't handle
> WWID with spaces in the bindings file; eg we don't have any quotation
> mechanism implemented.
> So can't we just settle on 'The WWID must not contain spaces' ?

I suppose that since we're using the "--replace-whitespace" option to
scsi_id by default, I'm fine with not including this patch.

-Ben

>
> Cheers,
>
> Hannes
> --
> Dr. Hannes Reinecke zSeries & Storage
> hare@suse.de +49 911 74053 688
> SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
> GF: Markus Rex, HRB 16746 (AG Nürnberg)

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