[pve-devel] [PATCH manager 2/2] pve6to7: storage content: ignore misconfigured unreferenced volumes

[Fabian Ebner <f.ebner@proxmox.com>]

If the same local storage is configured twice with content type
separation, migration in PVE 6 would lead to the volumes being
duplicated. As that would happen for every migration, such an issue
would likely be noticed already, and in PVE 7 such configuration is
not problematic for migration anymore. Also, misconfigured
unreferenced volumes are not an issue with respect to the upgrade
itself, just drop the check.

It's not necessary to scan storages with either 'images' or 'rootdir'
anymore, as only the log_info() remains.

Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
---
 PVE/CLI/pve6to7.pm | 43 ++++++-------------------------------------
 1 file changed, 6 insertions(+), 37 deletions(-)

diff --git a/PVE/CLI/pve6to7.pm b/PVE/CLI/pve6to7.pm
index 17da70e8..7d7b09d2 100644
--- a/PVE/CLI/pve6to7.pm
+++ b/PVE/CLI/pve6to7.pm
@@ -695,15 +695,11 @@ sub check_description_lengths {
 sub check_storage_content {
     log_info("Checking storage content type configuration..");
 
-    my $found_referenced;
-    my $found_unreferenced;
+    my $found;
     my $pass = 1;
 
     my $storage_cfg = PVE::Storage::config();
 
-    my $potentially_affected = {};
-    my $referenced_volids = {};
-
     for my $storeid (sort keys $storage_cfg->{ids}->%*) {
 	my $scfg = $storage_cfg->{ids}->{$storeid};
 
@@ -718,7 +714,8 @@ sub check_storage_content {
 	    delete $scfg->{content}->{none}; # scan for guest images below
 	}
 
-	next if $scfg->{content}->{images} && $scfg->{content}->{rootdir};
+	next if $scfg->{content}->{images};
+	next if $scfg->{content}->{rootdir};
 
 	# Skip 'iscsi(direct)' (and foreign plugins with potentially similiar behavior) with 'none',
 	# because that means "use LUNs directly" and vdisk_list() in PVE 6.x still lists those.
@@ -739,12 +736,8 @@ sub check_storage_content {
 	}
 	my @volids = map { $_->{volid} } $res->{$storeid}->@*;
 
-	for my $volid (@volids) {
-	    $potentially_affected->{$volid} = 1;
-	}
-
 	my $number = scalar(@volids);
-	if ($number > 0 && !$scfg->{content}->{images} && !$scfg->{content}->{rootdir}) {
+	if ($number > 0) {
 	    log_info("storage '$storeid' - neither content type 'images' nor 'rootdir' configured"
 		.", but found $number guest volume(s)");
 	}
@@ -753,8 +746,6 @@ sub check_storage_content {
     my $check_volid = sub {
 	my ($volid, $vmid, $vmtype, $reference) = @_;
 
-	$referenced_volids->{$volid} = 1 if $reference ne 'unreferenced';
-
 	my $guesttext = $vmtype eq 'qemu' ? 'VM' : 'CT';
 	my $prefix = "$guesttext $vmid - volume '$volid' ($reference)";
 
@@ -777,19 +768,14 @@ sub check_storage_content {
 	}
 
 	if (!$scfg->{content}->{$vtype}) {
-	    $found_referenced = 1 if $reference ne 'unreferenced';
-	    $found_unreferenced = 1 if $reference eq 'unreferenced';
+	    $found = 1;
 	    $pass = 0;
 	    log_warn("$prefix - storage does not have content type '$vtype' configured.");
 	}
     };
 
-    my $guests = {};
-
     my $cts = PVE::LXC::config_list();
     for my $vmid (sort { $a <=> $b } keys %$cts) {
-	$guests->{$vmid} = 'lxc';
-
 	my $conf = PVE::LXC::Config->load_config($vmid);
 
 	my $volhash = {};
@@ -817,8 +803,6 @@ sub check_storage_content {
 
     my $vms = PVE::QemuServer::config_list();
     for my $vmid (sort { $a <=> $b } keys %$vms) {
-	$guests->{$vmid} = 'qemu';
-
 	my $conf = PVE::QemuConfig->load_config($vmid);
 
 	my $volhash = {};
@@ -849,26 +833,11 @@ sub check_storage_content {
 	}
     }
 
-    if ($found_referenced) {
+    if ($found) {
 	log_warn("Proxmox VE 7.0 enforces stricter content type checks. The guests above " .
 	    "might not work until the storage configuration is fixed.");
     }
 
-    for my $volid (sort keys $potentially_affected->%*) {
-	next if $referenced_volids->{$volid}; # already checked
-
-	my (undef, undef, $vmid) = PVE::Storage::parse_volname($storage_cfg, $volid);
-	my $vmtype = $guests->{$vmid};
-	next if !$vmtype;
-
-	$check_volid->($volid, $vmid, $vmtype, 'unreferenced');
-    }
-
-    if ($found_unreferenced) {
-	log_warn("When migrating, Proxmox VE 7.0 only scans storages with the appropriate " .
-	    "content types for unreferenced guest volumes.");
-    }
-
     if ($pass) {
 	log_pass("no problems found");
     }
-- 
2.20.1