[pve-devel] [PATCH storage 16/26] common: add volume_type_from_name convenience helper

[Fabian Grünbichler]

On July 29, 2025 1:15 pm, Wolfgang Bumiller wrote:
> For plugins which follow our new naming scheme.
> 
> Signed-off-by: Wolfgang Bumiller <w.bumiller at proxmox.com>
> ---
>  src/PVE/Storage/Common.pm | 29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/src/PVE/Storage/Common.pm b/src/PVE/Storage/Common.pm
> index 7086e1c..813fba6 100644
> --- a/src/PVE/Storage/Common.pm
> +++ b/src/PVE/Storage/Common.pm
> @@ -313,6 +313,35 @@ sub should_list_images : prototype($$) ($expected_content_type, $volume_type) {
>      return $expected_content_type eq $volume_type;
>  }
>  
> +=head3 volume_type_from_name
> +
> +    volume_type_from_name($name)
> +
> +This is available for storages which follow our most common naming scheme relating to volume types:
> +A "vol-vm-" prefix for the C<vm-vol> vtype, and a "vol-ct-" prefix for the C<ct-vol> vtype.
> +
> +This function allows (and ignores) an optional "base-" prefix, such that
> +"base-vol-ct-100-disk-0.raw" would return C<ct-vol>.
> +
> +In any other case it returns C<images>.
> +
> +=cut
> +
> +sub volume_type_from_name : prototype($) {
> +    my ($name) = @_;
> +
> +    if ($name =~ /^(?:base-)?(?:(?:sub)?vol-(vm|ct))-/) {
> +        return "$1-vol";
> +    }
> +
> +    # Note: Despite the legacy `subvol-*` and `basevol-*` dirs always being containers, giving
> +    # them the vtype `ct-vol` would break `path_to_volume_id` which would expect their volids to
> +    # be in the `cts/` subdir instead of in `images/`...
> +    # return 'ct-vol' if $name =~ /^(?:subvol|basevol)-/;
> +
> +    return 'images';
> +}

ZFSPoolPlugin has it's own variant of this, and this one here seems
unused?

> +
>  =head3 is_volume_type
>  
>      is_volume_type($vtype)
> -- 
> 2.47.2
> 
> 
> 
> _______________________________________________
> pve-devel mailing list
> pve-devel at lists.proxmox.com
> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
> 
> 
>