Hello, I have last version Proxmox 6.x (now 6,2) and  VM backup to Windows Server 2008 disks (CIFS) in the same network (LAN 1Gb) .
If run backup task task for snapshot the job ends OK
	
	
	
		
If run backup task as suspend mode or stop mode
	
	
	
		
backup task  it never ends and the VM is blocked 
Last year it worked, then after some upgrade of proxmox or windows server 2008R2 this problem occurred and I don't know what to do with it.
Can you advise?
				
			If run backup task task for snapshot the job ends OK
		Code:
	
	Proxmox
Virtual Environment 6.2-6
Virtual Machine 100 (TNT) on node 'proxmox'
Filter VMID
Logs
()
INFO: starting new backup job: vzdump 100 --node proxmox --compress zstd --mode snapshot --storage MDServer --remove 0
INFO: Starting Backup of VM 100 (qemu)
INFO: Backup started at 2020-06-30 20:23:49
INFO: status = running
INFO: VM Name: TNT
INFO: include disk 'scsi0' 'localRAID1:vm-100-disk-0' 100G
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/mnt/pve/MDServer/dump/vzdump-qemu-100-2020_06_30-20_23_49.vma.zst'
INFO: started backup task '9c170b5a-2000-4637-b62b-2d359be85fd5'
INFO: resuming VM again
INFO: status: 0% (475136000/107374182400), sparse 0% (128724992), duration 3, read/write 158/115 MB/s
INFO: status: 1% (1090912256/107374182400), sparse 0% (181481472), duration 11, read/write 76/70 MB/s
INFO: status: 2% (2147614720/107374182400), sparse 0% (196046848), duration 32, read/write 50/49 MB/s
INFO: status: 3% (3257532416/107374182400), sparse 0% (279232512), duration 45, read/write 85/78 MB/s
INFO: status: 4% (4492886016/107374182400), sparse 0% (604082176), duration 56, read/write 112/82 MB/s
INFO: status: 5% (5393743872/107374182400), sparse 0% (647987200), duration 65, read/write 100/95 MB/s
..
INFO: status: 97% (104153612288/107374182400), sparse 12% (13615497216), duration 1383, read/write 141/126 MB/s
INFO: status: 98% (105385164800/107374182400), sparse 13% (13993218048), duration 1393, read/write 123/85 MB/s
INFO: status: 99% (106411458560/107374182400), sparse 13% (14136856576), duration 1403, read/write 102/88 MB/s
INFO: status: 100% (107374182400/107374182400), sparse 13% (14973509632), duration 1408, read/write 192/25 MB/s
INFO: transferred 107374 MB in 1408 seconds (76 MB/s)
INFO: archive file size: 47.00GB
INFO: Finished Backup of VM 100 (00:23:28)
INFO: Backup finished at 2020-06-30 20:47:17
INFO: Backup job finished successfully
TASK OKIf run backup task as suspend mode or stop mode
		Code:
	
	INFO: status: 100% (107374182400/107374182400), sparse 13% (14973509632), duration 1408, read/write 192/25 MB/s
INFO: transferred 107374 MB in 1408 seconds (76 MB/s)Last year it worked, then after some upgrade of proxmox or windows server 2008R2 this problem occurred and I don't know what to do with it.
Can you advise?
 
	 
	