[pve-devel] [PATCH pve-cluster] fix #6615: rrd: only return populated entries

[Hannes Laimer]

On 08.08.25 16:55, Fabian Grünbichler wrote:
> On August 8, 2025 4:16 pm, Hannes Laimer wrote:
>> RRD fetch can include the latest bucket before metrics are flushed,
>> resulting in entries with only a timestamp.
>>
>> This now only returns entries with at least one value.
>>
>> Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
>> ---
>>   src/PVE/RRD.pm | 5 ++++-
>>   1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/src/PVE/RRD.pm b/src/PVE/RRD.pm
>> index 8fe1927..41737ee 100644
>> --- a/src/PVE/RRD.pm
>> +++ b/src/PVE/RRD.pm
>> @@ -67,10 +67,12 @@ sub create_rrd_data {
>>       for my $line (@$data) {
>>           my $entry = { 'time' => $start };
>>           $start += $step;
>> +        my $has_value = 0;
>>           for (my $i = 0; $i < $fields; $i++) {
>>               my $name = $names->[$i];
>>               if (defined(my $val = $line->[$i])) {
>>                   $entry->{$name} = $val;
>> +                $has_value = 1 if !$has_value;
>>                   $entry->{memavailable} = $val
>>                       if $is_node && $name eq 'memfree' && !exists($entry->{memavailable});
>>               } else {
>> @@ -78,7 +80,8 @@ sub create_rrd_data {
>>                   # maybe make this configurable?
>>               }
>>           }
>> -        push @$res, $entry;
>> +        # Do not return entries that only contain 'time' without any metric values
>> +        push @$res, $entry if $has_value;
> 
> nit: this could just check that $entry has more than one key?
> 

we could, and assuming the structure of the entries won't change, we
probably also should :)

I'll send a v2

>>       }
>>   
>>       return $res;
>> -- 
>> 2.47.2
>>
>>
>>
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>>
>>
>>
> 
> 
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