Can't backup 1 VM to Proxmox Backup Server

D

DarkJackal87

New Member
Apr 20, 2025
8
0
1
Hello everyone,

I'm running into a strange issue, i'm trying to backup my VM's to a remote PBS, everything it's fine, except for 1 machine, here is the log

Code: 
100: 2025-10-28 00:50:37 INFO: Starting Backup of VM 100 (qemu)
100: 2025-10-28 00:50:37 INFO: status = running
100: 2025-10-28 00:50:37 INFO: VM Name: Alpine1-Headless-Docker-Server
100: 2025-10-28 00:50:37 INFO: include disk 'sata0' 'local-lvm:vm-100-disk-0' 20G
100: 2025-10-28 00:50:37 INFO: backup mode: snapshot
100: 2025-10-28 00:50:37 INFO: ionice priority: 7
100: 2025-10-28 00:50:37 INFO: creating Proxmox Backup Server archive 'vm/100/2025-10-27T23:50:37Z'
100: 2025-10-28 00:50:37 INFO: enabling encryption
100: 2025-10-28 00:50:37 INFO: issuing guest-agent 'fs-freeze' command
100: 2025-10-28 00:50:57 INFO: issuing guest-agent 'fs-thaw' command
100: 2025-10-28 00:50:57 ERROR: VM 100 qmp command 'backup' failed - backup connect failed: command error: client error (Connect)
100: 2025-10-28 00:50:57 INFO: aborting backup job
100: 2025-10-28 00:50:57 INFO: resuming VM again
100: 2025-10-28 00:50:57 ERROR: Backup of VM 100 failed - VM 100 qmp command 'backup' failed - backup connect failed: command error: client error (Connect)

Please note that i have three istances of Alpine linux, all identical.... the other VM's backup just fine

Code: 
101: 2025-10-28 00:50:57 INFO: Starting Backup of VM 101 (qemu)
101: 2025-10-28 00:50:57 INFO: status = running
101: 2025-10-28 00:50:57 INFO: VM Name: Alpine2-Headless-Docker-Server
101: 2025-10-28 00:50:57 INFO: include disk 'sata0' 'local-lvm:vm-101-disk-0' 70G
101: 2025-10-28 00:50:57 INFO: backup mode: snapshot
101: 2025-10-28 00:50:57 INFO: ionice priority: 7
101: 2025-10-28 00:50:57 INFO: creating Proxmox Backup Server archive 'vm/101/2025-10-27T23:50:57Z'
101: 2025-10-28 00:50:57 INFO: enabling encryption
101: 2025-10-28 00:50:58 INFO: issuing guest-agent 'fs-freeze' command
101: 2025-10-28 00:50:58 INFO: issuing guest-agent 'fs-thaw' command
101: 2025-10-28 00:50:59 INFO: started backup task '249cfccf-ea3a-4e11-9948-62f903625f9a'
101: 2025-10-28 00:50:59 INFO: resuming VM again
101: 2025-10-28 00:50:59 INFO: sata0: dirty-bitmap status: created new
101: 2025-10-28 00:51:02 INFO:   0% (236.0 MiB of 70.0 GiB) in 3s, read: 78.7 MiB/s, write: 78.7 MiB/s
101: 2025-10-28 00:51:07 INFO:   1% (748.0 MiB of 70.0 GiB) in 8s, read: 102.4 MiB/s, write: 102.4 MiB/s
101: 2025-10-28 00:51:16 INFO:   2% (1.4 GiB of 70.0 GiB) in 17s, read: 76.4 MiB/s, write: 76.4 MiB/s
101: 2025-10-28 00:51:25 INFO:   3% (2.2 GiB of 70.0 GiB) in 26s, read: 85.8 MiB/s, write: 85.8 MiB/s
101: 2025-10-28 00:51:35 INFO:   4% (2.9 GiB of 70.0 GiB) in 36s, read: 72.0 MiB/s, write: 72.0 MiB/s
101: 2025-10-28 00:51:50 INFO:   5% (3.5 GiB of 70.0 GiB) in 51s, read: 46.7 MiB/s, write: 45.1 MiB/s
101: 2025-10-28 00:52:06 INFO:   6% (4.2 GiB of 70.0 GiB) in 1m 7s, read: 42.5 MiB/s, write: 42.5 MiB/s
101: 2025-10-28 00:52:20 INFO:   7% (4.9 GiB of 70.0 GiB) in 1m 21s, read: 51.4 MiB/s, write: 51.4 MiB/s
101: 2025-10-28 00:52:36 INFO:   8% (5.7 GiB of 70.0 GiB) in 1m 37s, read: 47.5 MiB/s, write: 46.0 MiB/s
101: 2025-10-28 00:52:50 INFO:   9% (6.3 GiB of 70.0 GiB) in 1m 51s, read: 48.6 MiB/s, write: 48.6 MiB/s
101: 2025-10-28 00:53:05 INFO:  10% (7.0 GiB of 70.0 GiB) in 2m 6s, read: 48.3 MiB/s, write: 48.3 MiB/s
101: 2025-10-28 00:53:21 INFO:  11% (7.7 GiB of 70.0 GiB) in 2m 22s, read: 44.0 MiB/s, write: 42.8 MiB/s
101: 2025-10-28 00:53:38 INFO:  12% (8.4 GiB of 70.0 GiB) in 2m 39s, read: 42.6 MiB/s, write: 42.6 MiB/s
101: 2025-10-28 00:53:57 INFO:  13% (9.2 GiB of 70.0 GiB) in 2m 58s, read: 39.6 MiB/s, write: 39.6 MiB/s
101: 2025-10-28 00:54:10 INFO:  14% (9.8 GiB of 70.0 GiB) in 3m 11s, read: 53.2 MiB/s, write: 52.3 MiB/s
101: 2025-10-28 00:54:24 INFO:  15% (10.5 GiB of 70.0 GiB) in 3m 25s, read: 50.0 MiB/s, write: 50.0 MiB/s
101: 2025-10-28 00:54:39 INFO:  16% (11.2 GiB of 70.0 GiB) in 3m 40s, read: 48.8 MiB/s, write: 48.0 MiB/s
101: 2025-10-28 00:54:48 INFO:  17% (11.9 GiB of 70.0 GiB) in 3m 49s, read: 80.4 MiB/s, write: 80.4 MiB/s
101: 2025-10-28 00:55:13 INFO:  18% (12.6 GiB of 70.0 GiB) in 4m 14s, read: 27.4 MiB/s, write: 27.4 MiB/s
101: 2025-10-28 00:55:34 INFO:  19% (13.3 GiB of 70.0 GiB) in 4m 35s, read: 36.4 MiB/s, write: 35.4 MiB/s
101: 2025-10-28 00:55:46 INFO:  20% (14.1 GiB of 70.0 GiB) in 4m 47s, read: 61.7 MiB/s, write: 61.7 MiB/s
101: 2025-10-28 00:56:00 INFO:  21% (14.8 GiB of 70.0 GiB) in 5m 1s, read: 50.6 MiB/s, write: 50.0 MiB/s
101: 2025-10-28 00:56:14 INFO:  22% (15.4 GiB of 70.0 GiB) in 5m 15s, read: 48.9 MiB/s, write: 46.6 MiB/s
101: 2025-10-28 00:56:32 INFO:  23% (16.1 GiB of 70.0 GiB) in 5m 33s, read: 40.0 MiB/s, write: 38.4 MiB/s
101: 2025-10-28 00:56:44 INFO:  24% (16.8 GiB of 70.0 GiB) in 5m 45s, read: 59.0 MiB/s, write: 59.0 MiB/s
101: 2025-10-28 00:56:56 INFO:  25% (17.5 GiB of 70.0 GiB) in 5m 57s, read: 57.7 MiB/s, write: 56.0 MiB/s
101: 2025-10-28 00:57:11 INFO:  26% (18.2 GiB of 70.0 GiB) in 6m 12s, read: 50.1 MiB/s, write: 50.1 MiB/s
101: 2025-10-28 00:57:30 INFO:  27% (19.0 GiB of 70.0 GiB) in 6m 31s, read: 40.0 MiB/s, write: 40.0 MiB/s
101: 2025-10-28 00:57:42 INFO:  28% (19.6 GiB of 70.0 GiB) in 6m 43s, read: 54.0 MiB/s, write: 54.0 MiB/s
101: 2025-10-28 00:57:58 INFO:  29% (20.3 GiB of 70.0 GiB) in 6m 59s, read: 45.8 MiB/s, write: 45.2 MiB/s
101: 2025-10-28 00:58:20 INFO:  30% (21.0 GiB of 70.0 GiB) in 7m 21s, read: 32.0 MiB/s, write: 32.0 MiB/s
101: 2025-10-28 00:58:33 INFO:  31% (21.7 GiB of 70.0 GiB) in 7m 34s, read: 54.5 MiB/s, write: 53.5 MiB/s
101: 2025-10-28 00:58:49 INFO:  32% (22.4 GiB of 70.0 GiB) in 7m 50s, read: 44.8 MiB/s, write: 43.8 MiB/s
101: 2025-10-28 00:59:04 INFO:  33% (23.2 GiB of 70.0 GiB) in 8m 5s, read: 53.1 MiB/s, write: 51.2 MiB/s
101: 2025-10-28 00:59:16 INFO:  34% (23.9 GiB of 70.0 GiB) in 8m 17s, read: 58.7 MiB/s, write: 58.0 MiB/s
101: 2025-10-28 00:59:35 INFO:  35% (24.5 GiB of 70.0 GiB) in 8m 36s, read: 34.3 MiB/s, write: 34.3 MiB/s
101: 2025-10-28 00:59:47 INFO:  36% (25.2 GiB of 70.0 GiB) in 8m 48s, read: 61.7 MiB/s, write: 59.7 MiB/s
101: 2025-10-28 01:00:16 INFO:  37% (26.0 GiB of 70.0 GiB) in 9m 17s, read: 26.1 MiB/s, write: 26.1 MiB/s
101: 2025-10-28 01:00:30 INFO:  38% (26.7 GiB of 70.0 GiB) in 9m 31s, read: 50.6 MiB/s, write: 41.1 MiB/s
101: 2025-10-28 01:00:48 INFO:  39% (27.3 GiB of 70.0 GiB) in 9m 49s, read: 38.2 MiB/s, write: 36.7 MiB/s
101: 2025-10-28 01:00:58 INFO:  40% (28.0 GiB of 70.0 GiB) in 9m 59s, read: 70.8 MiB/s, write: 69.6 MiB/s
101: 2025-10-28 01:01:19 INFO:  41% (28.7 GiB of 70.0 GiB) in 10m 20s, read: 35.2 MiB/s, write: 35.2 MiB/s
101: 2025-10-28 01:01:35 INFO:  42% (29.4 GiB of 70.0 GiB) in 10m 36s, read: 44.5 MiB/s, write: 43.8 MiB/s
101: 2025-10-28 01:02:01 INFO:  43% (30.1 GiB of 70.0 GiB) in 11m 2s, read: 26.8 MiB/s, write: 26.8 MiB/s
101: 2025-10-28 01:02:18 INFO:  44% (30.8 GiB of 70.0 GiB) in 11m 19s, read: 41.9 MiB/s, write: 41.6 MiB/s
101: 2025-10-28 01:02:33 INFO:  45% (31.6 GiB of 70.0 GiB) in 11m 34s, read: 51.2 MiB/s, write: 50.4 MiB/s
101: 2025-10-28 01:02:49 INFO:  46% (32.2 GiB of 70.0 GiB) in 11m 50s, read: 41.5 MiB/s, write: 40.0 MiB/s
101: 2025-10-28 01:03:06 INFO:  47% (32.9 GiB of 70.0 GiB) in 12m 7s, read: 41.9 MiB/s, write: 40.5 MiB/s
101: 2025-10-28 01:03:27 INFO:  48% (33.7 GiB of 70.0 GiB) in 12m 28s, read: 37.7 MiB/s, write: 37.0 MiB/s
101: 2025-10-28 01:03:44 INFO:  49% (34.3 GiB of 70.0 GiB) in 12m 45s, read: 39.5 MiB/s, write: 39.5 MiB/s
101: 2025-10-28 01:04:03 INFO:  50% (35.0 GiB of 70.0 GiB) in 13m 4s, read: 37.7 MiB/s, write: 37.5 MiB/s
101: 2025-10-28 01:04:24 INFO:  51% (35.8 GiB of 70.0 GiB) in 13m 25s, read: 35.6 MiB/s, write: 33.7 MiB/s
101: 2025-10-28 01:04:45 INFO:  52% (36.5 GiB of 70.0 GiB) in 13m 46s, read: 34.1 MiB/s, write: 33.3 MiB/s
101: 2025-10-28 01:05:07 INFO:  53% (37.1 GiB of 70.0 GiB) in 14m 8s, read: 29.6 MiB/s, write: 24.5 MiB/s
101: 2025-10-28 01:05:27 INFO:  54% (37.8 GiB of 70.0 GiB) in 14m 28s, read: 36.0 MiB/s, write: 35.0 MiB/s
101: 2025-10-28 01:05:45 INFO:  55% (38.5 GiB of 70.0 GiB) in 14m 46s, read: 40.4 MiB/s, write: 36.4 MiB/s
101: 2025-10-28 01:06:14 INFO:  56% (39.2 GiB of 70.0 GiB) in 15m 15s, read: 24.4 MiB/s, write: 24.0 MiB/s
101: 2025-10-28 01:06:30 INFO:  57% (40.0 GiB of 70.0 GiB) in 15m 31s, read: 49.2 MiB/s, write: 49.2 MiB/s
101: 2025-10-28 01:06:53 INFO:  58% (40.7 GiB of 70.0 GiB) in 15m 54s, read: 30.3 MiB/s, write: 27.3 MiB/s
101: 2025-10-28 01:07:16 INFO:  59% (41.3 GiB of 70.0 GiB) in 16m 17s, read: 29.9 MiB/s, write: 29.4 MiB/s
101: 2025-10-28 01:07:38 INFO:  60% (42.0 GiB of 70.0 GiB) in 16m 39s, read: 33.3 MiB/s, write: 33.1 MiB/s
101: 2025-10-28 01:07:58 INFO:  61% (42.7 GiB of 70.0 GiB) in 16m 59s, read: 34.4 MiB/s, write: 27.8 MiB/s
101: 2025-10-28 01:08:12 INFO:  62% (43.4 GiB of 70.0 GiB) in 17m 13s, read: 50.6 MiB/s, write: 36.0 MiB/s
101: 2025-10-28 01:08:34 INFO:  63% (44.2 GiB of 70.0 GiB) in 17m 35s, read: 35.8 MiB/s, write: 34.0 MiB/s
101: 2025-10-28 01:09:02 INFO:  64% (44.8 GiB of 70.0 GiB) in 18m 3s, read: 24.4 MiB/s, write: 24.4 MiB/s
101: 2025-10-28 01:09:30 INFO:  65% (45.5 GiB of 70.0 GiB) in 18m 31s, read: 24.6 MiB/s, write: 24.1 MiB/s
101: 2025-10-28 01:09:57 INFO:  66% (46.2 GiB of 70.0 GiB) in 18m 58s, read: 26.5 MiB/s, write: 26.5 MiB/s
101: 2025-10-28 01:10:26 INFO:  67% (46.9 GiB of 70.0 GiB) in 19m 27s, read: 25.1 MiB/s, write: 25.0 MiB/s
101: 2025-10-28 01:10:45 INFO:  68% (47.6 GiB of 70.0 GiB) in 19m 46s, read: 38.7 MiB/s, write: 38.1 MiB/s
101: 2025-10-28 01:10:56 INFO:  69% (48.3 GiB of 70.0 GiB) in 19m 57s, read: 64.4 MiB/s, write: 60.4 MiB/s
101: 2025-10-28 01:11:18 INFO:  70% (49.1 GiB of 70.0 GiB) in 20m 19s, read: 33.6 MiB/s, write: 33.3 MiB/s
101: 2025-10-28 01:11:37 INFO:  71% (49.8 GiB of 70.0 GiB) in 20m 38s, read: 37.7 MiB/s, write: 35.8 MiB/s
101: 2025-10-28 01:11:47 INFO:  72% (50.4 GiB of 70.0 GiB) in 20m 48s, read: 68.8 MiB/s, write: 50.0 MiB/s
101: 2025-10-28 01:11:56 INFO:  73% (51.1 GiB of 70.0 GiB) in 20m 57s, read: 80.0 MiB/s, write: 59.1 MiB/s
101: 2025-10-28 01:12:11 INFO:  74% (52.0 GiB of 70.0 GiB) in 21m 12s, read: 56.5 MiB/s, write: 44.8 MiB/s
101: 2025-10-28 01:12:19 INFO:  75% (52.5 GiB of 70.0 GiB) in 21m 20s, read: 73.5 MiB/s, write: 50.5 MiB/s
101: 2025-10-28 01:12:30 INFO:  76% (53.2 GiB of 70.0 GiB) in 21m 31s, read: 63.3 MiB/s, write: 60.0 MiB/s
101: 2025-10-28 01:12:42 INFO:  77% (53.9 GiB of 70.0 GiB) in 21m 43s, read: 62.0 MiB/s, write: 55.0 MiB/s
101: 2025-10-28 01:12:51 INFO:  78% (54.7 GiB of 70.0 GiB) in 21m 52s, read: 83.6 MiB/s, write: 52.0 MiB/s
101: 2025-10-28 01:13:05 INFO:  79% (55.3 GiB of 70.0 GiB) in 22m 6s, read: 46.3 MiB/s, write: 43.7 MiB/s
101: 2025-10-28 01:13:24 INFO:  80% (56.0 GiB of 70.0 GiB) in 22m 25s, read: 37.3 MiB/s, write: 37.1 MiB/s
101: 2025-10-28 01:13:40 INFO:  81% (56.7 GiB of 70.0 GiB) in 22m 41s, read: 47.8 MiB/s, write: 41.2 MiB/s
101: 2025-10-28 01:13:54 INFO:  82% (57.4 GiB of 70.0 GiB) in 22m 55s, read: 49.4 MiB/s, write: 34.9 MiB/s
101: 2025-10-28 01:14:12 INFO:  83% (58.1 GiB of 70.0 GiB) in 23m 13s, read: 40.4 MiB/s, write: 31.6 MiB/s
101: 2025-10-28 01:14:28 INFO:  84% (58.9 GiB of 70.0 GiB) in 23m 29s, read: 51.0 MiB/s, write: 30.8 MiB/s
101: 2025-10-28 01:14:44 INFO:  85% (59.5 GiB of 70.0 GiB) in 23m 45s, read: 37.0 MiB/s, write: 30.5 MiB/s
101: 2025-10-28 01:15:14 INFO:  86% (60.3 GiB of 70.0 GiB) in 24m 15s, read: 25.6 MiB/s, write: 25.6 MiB/s
101: 2025-10-28 01:15:52 INFO:  87% (60.9 GiB of 70.0 GiB) in 24m 53s, read: 18.6 MiB/s, write: 18.6 MiB/s
101: 2025-10-28 01:16:26 INFO:  88% (61.6 GiB of 70.0 GiB) in 25m 27s, read: 19.6 MiB/s, write: 18.8 MiB/s
101: 2025-10-28 01:16:55 INFO:  89% (62.3 GiB of 70.0 GiB) in 25m 56s, read: 25.1 MiB/s, write: 25.1 MiB/s
101: 2025-10-28 01:17:27 INFO:  90% (63.0 GiB of 70.0 GiB) in 26m 28s, read: 23.1 MiB/s, write: 22.2 MiB/s
101: 2025-10-28 01:17:48 INFO:  91% (63.7 GiB of 70.0 GiB) in 26m 49s, read: 34.5 MiB/s, write: 34.3 MiB/s
101: 2025-10-28 01:18:14 INFO:  92% (64.4 GiB of 70.0 GiB) in 27m 15s, read: 27.5 MiB/s, write: 26.6 MiB/s
101: 2025-10-28 01:18:41 INFO:  93% (65.1 GiB of 70.0 GiB) in 27m 42s, read: 25.3 MiB/s, write: 24.3 MiB/s
101: 2025-10-28 01:19:04 INFO:  94% (65.9 GiB of 70.0 GiB) in 28m 5s, read: 33.4 MiB/s, write: 31.5 MiB/s
101: 2025-10-28 01:19:21 INFO:  95% (66.5 GiB of 70.0 GiB) in 28m 22s, read: 40.5 MiB/s, write: 39.5 MiB/s
101: 2025-10-28 01:19:46 INFO:  96% (67.2 GiB of 70.0 GiB) in 28m 47s, read: 28.5 MiB/s, write: 27.0 MiB/s
101: 2025-10-28 01:20:04 INFO:  97% (68.0 GiB of 70.0 GiB) in 29m 5s, read: 42.0 MiB/s, write: 30.9 MiB/s
101: 2025-10-28 01:20:12 INFO:  98% (68.7 GiB of 70.0 GiB) in 29m 13s, read: 99.5 MiB/s, write: 43.5 MiB/s
101: 2025-10-28 01:20:31 INFO:  99% (69.3 GiB of 70.0 GiB) in 29m 32s, read: 32.6 MiB/s, write: 29.3 MiB/s
101: 2025-10-28 01:20:58 INFO: 100% (70.0 GiB of 70.0 GiB) in 29m 59s, read: 24.7 MiB/s, write: 24.6 MiB/s
101: 2025-10-28 01:21:00 INFO: backup is sparse: 716.00 MiB (0%) total zero data
101: 2025-10-28 01:21:00 INFO: backup was done incrementally, reused 4.31 GiB (6%)
101: 2025-10-28 01:21:00 INFO: transferred 70.00 GiB in 1801 seconds (39.8 MiB/s)
101: 2025-10-28 01:21:00 INFO: adding notes to backup
101: 2025-10-28 01:21:00 INFO: Finished Backup of VM 101 (00:30:03)

i'm using PBS version 3.4.7, and i can't really find what's wrong with it.....

Anyone have some ideas? Consider that the same machine on a USB drive backup just fine.....
 
Last edited:
shanv said:
Hi @DarkJackal87 , Could you please run the backup again and then share the output of the following command?

Code: 
journalctl -u pvedaemon -u pveproxy --since <time>
Click to expand...
Code: 
Oct 28 17:38:20 proxmox1 pvedaemon[240813]: <root@pam> successful auth for user 'root@pam'
Oct 28 17:40:36 proxmox1 pveproxy[236355]: worker exit
Oct 28 17:40:36 proxmox1 pveproxy[1163]: worker 236355 finished
Oct 28 17:40:36 proxmox1 pveproxy[1163]: starting 1 worker(s)
Oct 28 17:40:36 proxmox1 pveproxy[1163]: worker 253800 started
Oct 28 17:41:06 proxmox1 pveproxy[232864]: worker exit
Oct 28 17:41:06 proxmox1 pveproxy[1163]: worker 232864 finished
Oct 28 17:41:06 proxmox1 pveproxy[1163]: starting 1 worker(s)
Oct 28 17:41:06 proxmox1 pveproxy[1163]: worker 253939 started
Oct 28 17:53:21 proxmox1 pvedaemon[234620]: <root@pam> successful auth for user 'root@pam'
Oct 28 18:03:57 proxmox1 pvedaemon[233132]: <root@pam> successful auth for user 'homeassistant@pve'
Oct 28 18:03:57 proxmox1 pvedaemon[233132]: <root@pam> successful auth for user 'homeassistant@pve'
Oct 28 18:34:36 proxmox1 pvedaemon[233132]: <root@pam> successful auth for user 'root@pam'
Oct 28 18:36:13 proxmox1 pvedaemon[240813]: <root@pam> starting task UPID:proxmox1:000415AE:00622148:6900FF0D:vzdump:100:root@pam:
Oct 28 18:36:13 proxmox1 pvedaemon[267694]: INFO: starting new backup job: vzdump 100 --notification-mode notification-system --storage VPSBackup --notes-template '{{guestname>
Oct 28 18:36:13 proxmox1 pvedaemon[267694]: INFO: Starting Backup of VM 100 (qemu)
Oct 28 18:36:34 proxmox1 pvedaemon[267694]: VM 100 qmp command failed - VM 100 qmp command 'backup' failed - backup connect failed: command error: client error (Connect)
Oct 28 18:36:34 proxmox1 pvedaemon[267694]: ERROR: Backup of VM 100 failed - VM 100 qmp command 'backup' failed - backup connect failed: command error: client error (Connect)
Oct 28 18:36:34 proxmox1 pvedaemon[267694]: INFO: Backup job finished with errors
Oct 28 18:36:35 proxmox1 perl[267694]: notified via target `Gmail`
Oct 28 18:36:35 proxmox1 pvedaemon[267694]: job errors
Oct 28 18:36:35 proxmox1 pvedaemon[240813]: <root@pam> end task UPID:proxmox1:000415AE:00622148:6900FF0D:vzdump:100:root@pam: job errors
Oct 28 18:36:50 proxmox1 pvedaemon[267877]: starting termproxy UPID:proxmox1:00041665:00622FE8:6900FF32:vncshell::root@pam:
Oct 28 18:36:50 proxmox1 pvedaemon[234620]: <root@pam> starting task UPID:proxmox1:00041665:00622FE8:6900FF32:vncshell::root@pam:
Oct 28 18:36:50 proxmox1 pvedaemon[240813]: <root@pam> successful auth for user 'root@pam'
Oct 28 18:36:50 proxmox1 login[267883]: pam_unix(login:session): session opened for user root(uid=0) by root(uid=0)
Oct 28 18:36:51 proxmox1 login[267883]: ROOT LOGIN ON pts/0

Here it is
 
Little update, if i stop the machine and try to backup it, it works....

Code: 
INFO: starting new backup job: vzdump 100 --node proxmox1 --all 0 --storage VPSBackup --notes-template '{{guestname}}' --mode snapshot --fleecing 0 --notification-mode notification-system
INFO: Starting Backup of VM 100 (qemu)
INFO: Backup started at 2025-10-28 18:49:54
INFO: status = stopped
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: VM Name: Alpine1-Headless-Docker-Server
INFO: include disk 'sata0' 'local-lvm:vm-100-disk-0' 20G
INFO: creating Proxmox Backup Server archive 'vm/100/2025-10-28T17:49:54Z'
INFO: enabling encryption
INFO: starting kvm to execute backup task
INFO: started backup task '8e7b670c-1faf-4a70-9c0b-38c89c3b9579'
INFO: sata0: dirty-bitmap status: created new
INFO:   1% (236.0 MiB of 20.0 GiB) in 3s, read: 78.7 MiB/s, write: 78.7 MiB/s
INFO:  11% (2.3 GiB of 20.0 GiB) in 6s, read: 701.3 MiB/s, write: 113.3 MiB/s
INFO:  13% (2.7 GiB of 20.0 GiB) in 9s, read: 126.7 MiB/s, write: 126.7 MiB/s
INFO:  14% (2.8 GiB of 20.0 GiB) in 12s, read: 61.3 MiB/s, write: 61.3 MiB/s
INFO:  15% (3.2 GiB of 20.0 GiB) in 15s, read: 108.0 MiB/s, write: 108.0 MiB/s
INFO:  16% (3.3 GiB of 20.0 GiB) in 18s, read: 66.7 MiB/s, write: 66.7 MiB/s
INFO:  17% (3.5 GiB of 20.0 GiB) in 21s, read: 42.7 MiB/s, write: 42.7 MiB/s
INFO:  18% (3.7 GiB of 20.0 GiB) in 25s, read: 51.0 MiB/s, write: 51.0 MiB/s
INFO:  19% (3.8 GiB of 20.0 GiB) in 28s, read: 60.0 MiB/s, write: 60.0 MiB/s
INFO:  20% (4.2 GiB of 20.0 GiB) in 31s, read: 104.0 MiB/s, write: 90.7 MiB/s
INFO:  21% (4.3 GiB of 20.0 GiB) in 34s, read: 53.3 MiB/s, write: 53.3 MiB/s
INFO:  22% (4.5 GiB of 20.0 GiB) in 37s, read: 76.0 MiB/s, write: 76.0 MiB/s
INFO:  23% (4.8 GiB of 20.0 GiB) in 40s, read: 77.3 MiB/s, write: 77.3 MiB/s
INFO:  25% (5.1 GiB of 20.0 GiB) in 43s, read: 104.0 MiB/s, write: 85.3 MiB/s
INFO:  26% (5.3 GiB of 20.0 GiB) in 46s, read: 86.7 MiB/s, write: 82.7 MiB/s
INFO:  28% (5.7 GiB of 20.0 GiB) in 49s, read: 116.0 MiB/s, write: 70.7 MiB/s
INFO:  29% (5.8 GiB of 20.0 GiB) in 52s, read: 57.3 MiB/s, write: 49.3 MiB/s
INFO:  30% (6.1 GiB of 20.0 GiB) in 56s, read: 80.0 MiB/s, write: 66.0 MiB/s
INFO:  31% (6.3 GiB of 20.0 GiB) in 59s, read: 58.7 MiB/s, write: 58.7 MiB/s
INFO:  33% (6.6 GiB of 20.0 GiB) in 1m 2s, read: 108.0 MiB/s, write: 106.7 MiB/s
INFO:  34% (6.8 GiB of 20.0 GiB) in 1m 5s, read: 65.3 MiB/s, write: 65.3 MiB/s
INFO:  35% (7.1 GiB of 20.0 GiB) in 1m 11s, read: 43.3 MiB/s, write: 42.0 MiB/s
INFO:  36% (7.3 GiB of 20.0 GiB) in 1m 14s, read: 73.3 MiB/s, write: 73.3 MiB/s
INFO:  37% (7.5 GiB of 20.0 GiB) in 1m 17s, read: 82.7 MiB/s, write: 82.7 MiB/s
INFO:  38% (7.7 GiB of 20.0 GiB) in 1m 20s, read: 54.7 MiB/s, write: 54.7 MiB/s
INFO:  39% (7.9 GiB of 20.0 GiB) in 1m 23s, read: 61.3 MiB/s, write: 61.3 MiB/s
INFO:  40% (8.2 GiB of 20.0 GiB) in 1m 26s, read: 113.3 MiB/s, write: 100.0 MiB/s
INFO:  41% (8.4 GiB of 20.0 GiB) in 1m 29s, read: 58.7 MiB/s, write: 58.7 MiB/s
INFO:  42% (8.5 GiB of 20.0 GiB) in 1m 32s, read: 54.7 MiB/s, write: 54.7 MiB/s
INFO:  45% (9.1 GiB of 20.0 GiB) in 1m 35s, read: 184.0 MiB/s, write: 76.0 MiB/s
INFO:  53% (10.8 GiB of 20.0 GiB) in 1m 38s, read: 584.0 MiB/s, write: 157.3 MiB/s
INFO:  56% (11.3 GiB of 20.0 GiB) in 1m 41s, read: 169.3 MiB/s, write: 53.3 MiB/s
INFO:  61% (12.3 GiB of 20.0 GiB) in 1m 44s, read: 352.0 MiB/s, write: 72.0 MiB/s
INFO:  62% (12.5 GiB of 20.0 GiB) in 1m 47s, read: 53.3 MiB/s, write: 53.3 MiB/s
INFO:  63% (12.6 GiB of 20.0 GiB) in 1m 50s, read: 61.3 MiB/s, write: 54.7 MiB/s
INFO:  65% (13.1 GiB of 20.0 GiB) in 1m 53s, read: 140.0 MiB/s, write: 129.3 MiB/s
INFO:  66% (13.3 GiB of 20.0 GiB) in 1m 56s, read: 92.0 MiB/s, write: 82.7 MiB/s
INFO:  67% (13.5 GiB of 20.0 GiB) in 1m 59s, read: 65.3 MiB/s, write: 65.3 MiB/s
INFO:  69% (13.9 GiB of 20.0 GiB) in 2m 2s, read: 116.0 MiB/s, write: 116.0 MiB/s
INFO:  70% (14.1 GiB of 20.0 GiB) in 2m 5s, read: 96.0 MiB/s, write: 85.3 MiB/s
INFO:  72% (14.4 GiB of 20.0 GiB) in 2m 8s, read: 102.7 MiB/s, write: 102.7 MiB/s
INFO:  73% (14.7 GiB of 20.0 GiB) in 2m 11s, read: 84.0 MiB/s, write: 84.0 MiB/s
INFO:  74% (14.8 GiB of 20.0 GiB) in 2m 14s, read: 49.3 MiB/s, write: 49.3 MiB/s
INFO:  75% (15.0 GiB of 20.0 GiB) in 2m 17s, read: 73.3 MiB/s, write: 72.0 MiB/s
INFO:  76% (15.2 GiB of 20.0 GiB) in 2m 20s, read: 57.3 MiB/s, write: 57.3 MiB/s
INFO:  77% (15.5 GiB of 20.0 GiB) in 2m 23s, read: 92.0 MiB/s, write: 88.0 MiB/s
INFO:  78% (15.7 GiB of 20.0 GiB) in 2m 26s, read: 68.0 MiB/s, write: 66.7 MiB/s
INFO:  80% (16.1 GiB of 20.0 GiB) in 2m 29s, read: 128.0 MiB/s, write: 121.3 MiB/s
INFO:  82% (16.5 GiB of 20.0 GiB) in 2m 32s, read: 142.7 MiB/s, write: 142.7 MiB/s
INFO:  83% (16.8 GiB of 20.0 GiB) in 2m 35s, read: 102.7 MiB/s, write: 102.7 MiB/s
INFO:  86% (17.2 GiB of 20.0 GiB) in 2m 38s, read: 152.0 MiB/s, write: 72.0 MiB/s
INFO:  87% (17.6 GiB of 20.0 GiB) in 2m 41s, read: 116.0 MiB/s, write: 106.7 MiB/s
INFO:  89% (18.0 GiB of 20.0 GiB) in 2m 44s, read: 138.7 MiB/s, write: 128.0 MiB/s
INFO:  90% (18.1 GiB of 20.0 GiB) in 2m 47s, read: 61.3 MiB/s, write: 56.0 MiB/s
INFO:  92% (18.5 GiB of 20.0 GiB) in 2m 50s, read: 126.7 MiB/s, write: 120.0 MiB/s
INFO:  93% (18.8 GiB of 20.0 GiB) in 2m 53s, read: 86.7 MiB/s, write: 80.0 MiB/s
INFO:  94% (18.9 GiB of 20.0 GiB) in 2m 56s, read: 53.3 MiB/s, write: 52.0 MiB/s
INFO:  96% (19.2 GiB of 20.0 GiB) in 2m 59s, read: 94.7 MiB/s, write: 84.0 MiB/s
INFO:  97% (19.4 GiB of 20.0 GiB) in 3m 3s, read: 62.0 MiB/s, write: 51.0 MiB/s
INFO:  98% (19.7 GiB of 20.0 GiB) in 3m 6s, read: 94.7 MiB/s, write: 76.0 MiB/s
INFO:  99% (19.8 GiB of 20.0 GiB) in 3m 9s, read: 40.0 MiB/s, write: 38.7 MiB/s
INFO: 100% (20.0 GiB of 20.0 GiB) in 3m 12s, read: 54.7 MiB/s, write: 54.7 MiB/s
INFO: backup is sparse: 4.98 GiB (24%) total zero data
INFO: backup was done incrementally, reused 5.45 GiB (27%)
INFO: transferred 20.00 GiB in 192 seconds (106.7 MiB/s)
INFO: stopping kvm after backup task
INFO: adding notes to backup
INFO: Finished Backup of VM 100 (00:03:14)
INFO: Backup finished at 2025-10-28 18:53:08
INFO: Backup job finished successfully
INFO: notified via target `Gmail`
TASK OK
 
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