Asserts whether the target storage supports storing cloudinit images,
i.e. VM images, before creating a cloudinit image on the target storage.

Without the check in place, a cloudinit image can be created on the
storage, which does not support VM images, but won't be able to start
since any attached volume must be stored on a supported storage.

Signed-off-by: Daniel Kral <d.k...@proxmox.com>
---
changes since v1:
- new bug fix! (was indirectly fixed in rfc at commit_cloudinit_image)

 PVE/API2/Qemu.pm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index 2a2d971e..9fadf3e5 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -142,12 +142,13 @@ my $check_storage_access = sub {
 
        my $volid = $drive->{file};
        my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid, 1);
+       my $is_cloudinit = defined($volname) && $volname eq 'cloudinit';
 
-       if (!$volid || ($volid eq 'none' || (defined($volname) && $volname eq 
'cloudinit'))) {
+       if (!$volid || $volid eq 'none') {
            # nothing to check
        } elsif ($isCDROM && ($volid eq 'cdrom')) {
            $rpcenv->check($authuser, "/", ['Sys.Console']);
-       } elsif (!$isCDROM && ($volid =~ $PVE::QemuServer::Drive::NEW_DISK_RE)) 
{
+       } elsif (!$isCDROM && ($volid =~ $PVE::QemuServer::Drive::NEW_DISK_RE 
|| $is_cloudinit)) {
            $rpcenv->check($authuser, "/storage/$storeid", 
['Datastore.AllocateSpace']);
            my $scfg = PVE::Storage::storage_config($storecfg, $storeid);
            raise_param_exc({ storage => "storage '$storeid' does not support 
vm images"})
-- 
2.39.5



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