[PATCH storage] fix: #7844: diskmanage: whitelist GRAID virtual block devices.

[Elias Huhsovitz <e.huhsovitz@proxmox.com>]

Graid virtual drives are of format `gdgXnY`. This format is currently
not whitelisted, resulting in the `Diskmanage::get_disks` subroutine to
ignore the devices.

Add regex to inlcude graid devices of format `gdgXnY`.

Signed-off-by: Elias Huhsovitz <e.huhsovitz@proxmox.com>
---
Graid is propietary software. I current do not have access to any kind of
authentic graid software or device. I tested this patch by creating a mock
block device (e.g. gdg0n1) using a small kernel module.

If there is a more robust version to test changes like this, please let me
know.

 src/PVE/Diskmanage.pm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/PVE/Diskmanage.pm b/src/PVE/Diskmanage.pm
index d9ce0d0..f3a34dc 100644
--- a/src/PVE/Diskmanage.pm
+++ b/src/PVE/Diskmanage.pm
@@ -562,10 +562,12 @@ sub get_disks {
             # - xvdX:       xen virtual block device
             # - nvmeXnY:    nvme devices
             # - cciss!cXnY  cciss devices
+            # - gdgXnY:     graid devices
             return
                 if $dev !~ m/^(h|s|x?v)d[a-z]+$/
                 && $dev !~ m/^nvme\d+n\d+$/
-                && $dev !~ m/^cciss\!c\d+d\d+$/;
+                && $dev !~ m/^cciss\!c\d+d\d+$/
+                && $dev !~ m/^gdg\d+n\d+$/;
 
             my $data = get_udev_info("/sys/block/$dev") // return;
             my $devpath = $data->{devpath};
-- 
2.47.3