this increases verbosity of the actions, especially when including the
snapshot name, since that will appear in the task logs wereas before
there was no mention of any action, just the storage specific output for
creating/rollback/removal.

Logs are printed at all main actions that can fail or take potentially
long, so that it's clear what started/finished.

Signed-off-by: Dominik Csapak <d.csa...@proxmox.com>
---
replaces https://lists.proxmox.com/pipermail/pve-devel/2024-May/064010.html

 src/PVE/AbstractConfig.pm | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/PVE/AbstractConfig.pm b/src/PVE/AbstractConfig.pm
index 5d5f9b4..b685b7f 100644
--- a/src/PVE/AbstractConfig.pm
+++ b/src/PVE/AbstractConfig.pm
@@ -806,6 +806,8 @@ sub __snapshot_activate_storages {
 sub snapshot_create {
     my ($class, $vmid, $snapname, $save_vmstate, $comment) = @_;
 
+    print "Creating snapshot '$snapname'\n";
+
     my $snap = $class->__snapshot_prepare($vmid, $snapname, $save_vmstate, 
$comment);
 
     $save_vmstate = 0 if !$snap->{vmstate};
@@ -820,24 +822,30 @@ sub snapshot_create {
        $class->__snapshot_activate_storages($conf, 0);
 
        if ($freezefs) {
+           print "Trying to freeze guest filesystems\n";
            $class->__snapshot_freeze($vmid, 0);
+           print "Succesfully frozen guest filesystems\n";
        }
 
        $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, 
"before");
 
+       print "Creating volume snapshots\n";
        $class->foreach_volume($snap, sub {
            my ($vs, $volume) = @_;
 
            $class->__snapshot_create_vol_snapshot($vmid, $vs, $volume, 
$snapname);
            $drivehash->{$vs} = 1;
        });
+       print "Succesfully created volume snapshots\n";
     };
     my $err = $@;
 
     if ($running) {
        $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, 
"after");
        if ($freezefs) {
+           print "Trying to thaw guest filesystems\n";
            $class->__snapshot_freeze($vmid, 1);
+           print "Succesfully thawed guest filesystems\n";
        }
        $class->__snapshot_create_vol_snapshots_hook($vmid, $snap, $running, 
"after-unfreeze");
     }
@@ -850,6 +858,8 @@ sub snapshot_create {
     }
 
     $class->__snapshot_commit($vmid, $snapname);
+
+    print "Succesfully created snapshot '$snapname'\n";
 }
 
 # Check if the snapshot might still be needed by a replication job.
@@ -895,6 +905,8 @@ my $snapshot_delete_assert_not_needed_by_replication = sub {
 sub snapshot_delete {
     my ($class, $vmid, $snapname, $force, $drivehash) = @_;
 
+    print "Removing snapshot '$snapname'\n";
+
     my $unused = [];
 
     my $conf = $class->load_config($vmid);
@@ -963,12 +975,15 @@ sub snapshot_delete {
 
     # now remove vmstate file
     if ($snap->{vmstate}) {
+       print "Removing vmstate file\n";
        $class->__snapshot_delete_vmstate_file($snap, $force);
 
        # save changes (remove vmstate from snapshot)
        $class->lock_config($vmid, $remove_drive, 'vmstate') if !$force;
+       print "Succesfully removed vmstate file\n";
     };
 
+    print "Removing volume snapshots\n";
     # now remove all volume snapshots
     $class->foreach_volume($snap, sub {
        my ($vs, $volume) = @_;
@@ -985,6 +1000,7 @@ sub snapshot_delete {
        # save changes (remove drive from snapshot)
        $class->lock_config($vmid, $remove_drive, $vs) if !$force;
     });
+    print "Succesfully removed volume snapshots\n";
 
     # now cleanup config
     $class->lock_config($vmid, sub {
@@ -1010,6 +1026,8 @@ sub snapshot_delete {
 
        $class->write_config($vmid, $conf);
     });
+
+    print "Succesfully removed snapshot '$snapname'\n";
 }
 
 # Remove replication snapshots to make a rollback possible.
@@ -1082,6 +1100,8 @@ my $rollback_remove_replication_snapshots = sub {
 sub snapshot_rollback {
     my ($class, $vmid, $snapname) = @_;
 
+    print "Rolling back to snapshot '$snapname'\n";
+
     my $prepare = 1;
 
     my $data = {};
@@ -1121,6 +1141,7 @@ sub snapshot_rollback {
 
        if ($prepare) {
            $class->check_lock($conf);
+           print "Stopping guest\n";
            $class->__snapshot_rollback_vm_stop($vmid);
        }
 
@@ -1149,20 +1170,25 @@ sub snapshot_rollback {
        $class->write_config($vmid, $conf);
 
        if (!$prepare && $snap->{vmstate}) {
+           print "Starting guest\n";
            $class->__snapshot_rollback_vm_start($vmid, $snap->{vmstate}, 
$data);
        }
     };
 
     $class->lock_config($vmid, $updatefn);
 
+    print "Rolling back volume snapshots\n";
     $class->foreach_volume($snap, sub {
        my ($vs, $volume) = @_;
 
        $class->__snapshot_rollback_vol_rollback($volume, $snapname);
     });
+    print "Succesfully rolled back volume snapshots\n";
 
     $prepare = 0;
     $class->lock_config($vmid, $updatefn);
+
+    print "Succesfully rolled back to snapshot '$snapname'\n";
 }
 
 # Calculate a derived property from a configuration. Derived properties are:
-- 
2.39.2



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