[pve-devel] [PATCH v3 storage 6/9] rbd plugin: implement new method to get qemu blockdevice options

[Fabian Grünbichler]

On June 26, 2025 4:40 pm, Fiona Ebner wrote:
> The mon host parsing is adapted from other places. While there
> currently is no support for vector notation in the storage config
> (it's a pve-storage-portal-dns-list option), it doesn't hurt to
> anticipate it, should the list of mon hosts come from a ceph.conf
> instead anytime in the future.

but in `path` we don't do this? shouldn't this be consistent?

also, we already have a full helper for getting a mon list from a ceph
config, so if we ever use that as source here, shouldn't we use that
helper?

> 
> Co-developed-by: Alexandre Derumier <alexandre.derumier at groupe-cyllene.com>
> Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
> ---
> 
> No changes in v3.
> 
>  src/PVE/Storage/RBDPlugin.pm | 39 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
> 
> diff --git a/src/PVE/Storage/RBDPlugin.pm b/src/PVE/Storage/RBDPlugin.pm
> index 3f7ca9f..229b07d 100644
> --- a/src/PVE/Storage/RBDPlugin.pm
> +++ b/src/PVE/Storage/RBDPlugin.pm
> @@ -513,6 +513,45 @@ sub path {
>      return ($path, $vmid, $vtype);
>  }
>  
> +sub qemu_blockdev_options {
> +    my ($class, $scfg, $storeid, $volname) = @_;
> +
> +    my $cmd_option = PVE::CephConfig::ceph_connect_option($scfg, $storeid);
> +    my ($name) = ($class->parse_volname($volname))[1];
> +
> +    if ($scfg->{krbd}) {
> +        my $rbd_dev_path = get_rbd_dev_path($scfg, $storeid, $name);
> +        return { driver => 'host_device', filename => $rbd_dev_path };
> +    }
> +
> +    my $blockdev = {
> +        driver => 'rbd',
> +        pool => $scfg->{pool} ? "$scfg->{pool}" : 'rbd',
> +        image => "$name",
> +    };
> +    $blockdev->{namespace} = "$scfg->{namespace}" if defined($scfg->{namespace});
> +
> +    $blockdev->{conf} = $cmd_option->{ceph_conf} if $cmd_option->{ceph_conf};
> +
> +    if (my $monhost = $scfg->{'monhost'}) {
> +        my $server = [];
> +        my @mons = PVE::Tools::split_list($monhost);
> +        for my $mon (@mons) {
> +            $mon =~ s/^\[?v\d\://; # remove beginning of vector
> +            $mon =~ s|/\d+\]?||; # remove end of vector
> +            my ($host, $port) = PVE::Tools::parse_host_and_port($mon);
> +            $port = '3300' if !$port;
> +            push @$server, { host => $host, port => $port };
> +        }
> +        $blockdev->{server} = $server;
> +        $blockdev->{'auth-client-required'} = ["$cmd_option->{auth_supported}"];
> +    }
> +
> +    $blockdev->{user} = "$cmd_option->{userid}" if $cmd_option->{keyring};
> +
> +    return $blockdev;
> +}
> +
>  sub find_free_diskname {
>      my ($class, $storeid, $scfg, $vmid, $fmt, $add_fmt_suffix) = @_;
>  
> -- 
> 2.47.2
> 
> 
> 
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