Re: [pve-devel] [PATCH storage] rbd: fix #4060 show data-pool usage when configured

[Dominik Csapak <d.csapak@proxmox.com>]

On 5/17/22 14:58, Aaron Lauterer wrote:
> When a data-pool is configured, use it for status infos. The 'data-pool'
> config option is used to mark the erasure coded pool while the 'pool'
> will be the replicated pool holding meta data such as the omap.
> 
> This means, the 'pool' will only use a small amount of space and people
> are interested how much they can store in the erasure coded pool anyway.
> 
> Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>
> ---
> I decided to check for the IMO more likely case first and check against
> a configured data-pool. Afterwards check if we actually need to set the
> default pool name in case the pool property is omitted in the storage
> config.
> 
>   PVE/Storage/RBDPlugin.pm | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/PVE/Storage/RBDPlugin.pm b/PVE/Storage/RBDPlugin.pm
> index fb48c3f..da28e8a 100644
> --- a/PVE/Storage/RBDPlugin.pm
> +++ b/PVE/Storage/RBDPlugin.pm
> @@ -630,7 +630,8 @@ sub status {
>       my $rados = $librados_connect->($scfg, $storeid);
>       my $df = $rados->mon_command({ prefix => 'df', format => 'json' });
>   
> -    my $pool =  $scfg->{pool} ? $scfg->{pool} : 'rbd';
> +    my $pool = $scfg->{'data-pool'} ? $scfg->{'data-pool'} : $scfg->{pool};
> +    $pool = 'rbd' if !$pool;
>   
>       my ($d) = grep { $_->{name} eq $pool } @{$df->{pools}};
>   

without looking more closely at the surrounding code and how we
set/get those properties, wouldn't it also possble to do:

my $pool = $scfg->{'data-pool'} // $scfg->{pool} // 'rbd';

?