Gerne mal mehr Infos, wie z. B. was ist der Quell Storage, wo sicherst du hin, genug Speicherplatz frei, funktionieren Backups anderer VMs, welche PVE Version usw. usw.
Detailed backup logs:
vzdump 103 --mode snapshot --storage local --mailto meine@email --compress lzo --mailnotification always --quiet 1 --node pve1
103: 2019-01-20 04:00:01 INFO: Starting Backup of VM 103 (qemu)
103: 2019-01-20 04:00:01 INFO: status = running
103: 2019-01-20 04:00:02 INFO: update VM 103: -lock backup
103: 2019-01-20 04:00:02 INFO: VM Name: meineVM
103: 2019-01-20 04:00:02 INFO: include disk 'scsi0' 'local-zfs:vm-103-disk-0' 40G
103: 2019-01-20 04:00:02 INFO: include disk 'scsi1' 'local-zfs:vm-103-disk-1' 300G
103: 2019-01-20 04:00:02 INFO: backup mode: snapshot
103: 2019-01-20 04:00:02 INFO: ionice priority: 7
103: 2019-01-20 04:00:02 INFO: snapshots found (not included into backup)
103: 2019-01-20 04:00:02 INFO: creating archive '/var/lib/vz/dump/vzdump-qemu-103-2019_01_20-04_00_01.vma.lzo'
103: 2019-01-20 04:00:02 INFO: started backup task '5da88c50-df30-4c2f-acfb-42e021f4d128'
103: 2019-01-20 04:00:05 INFO: status: 0% (104071168/365072220160), sparse 0% (60252160), duration 3, read/write 34/14 MB/s
103: 2019-01-20 04:01:29 INFO: status: 1% (3750100992/365072220160), sparse 0% (259674112), duration 87, read/write 43/41 MB/s
103: 2019-01-20 04:02:33 INFO: status: 2% (7310344192/365072220160), sparse 0% (527671296), duration 151, read/write 55/51 MB/s
103: 2019-01-20 04:03:59 INFO: status: 3% (11015553024/365072220160), sparse 0% (773652480), duration 237, read/write 43/40 MB/s
103: 2019-01-20 04:05:02 INFO: status: 4% (14615183360/365072220160), sparse 0% (909864960), duration 300, read/write 57/54 MB/s
103: 2019-01-20 04:06:06 INFO: status: 5% (18261278720/365072220160), sparse 0% (1172541440), duration 364, read/write 56/52 MB/s
103: 2019-01-20 04:06:45 INFO: status: 6% (23008509952/365072220160), sparse 1% (4264853504), duration 403, read/write 121/42 MB/s
103: 2019-01-20 04:06:49 INFO: status: 7% (25816989696/365072220160), sparse 1% (6912327680), duration 407, read/write 702/40 MB/s
103: 2019-01-20 04:07:04 INFO: status: 8% (29404692480/365072220160), sparse 2% (9776066560), duration 422, read/write 239/48 MB/s
103: 2019-01-20 04:07:09 INFO: status: 9% (33526251520/365072220160), sparse 3% (13699461120), duration 427, read/write 824/39 MB/s
103: 2019-01-20 04:07:48 INFO: status: 10% (36509712384/365072220160), sparse 4% (14695964672), duration 466, read/write 76/50 MB/s
103: 2019-01-20 04:09:05 INFO: status: 11% (40200306688/365072220160), sparse 4% (14933200896), duration 543, read/write 47/44 MB/s
103: 2019-01-20 04:10:24 INFO: status: 12% (43879104512/365072220160), sparse 4% (15185326080), duration 622, read/write 46/43 MB/s
103: 2019-01-20 04:11:46 INFO: status: 13% (47466545152/365072220160), sparse 4% (15321600000), duration 704, read/write 43/42 MB/s
103: 2019-01-20 04:12:55 INFO: status: 14% (51161464832/365072220160), sparse 4% (15758163968), duration 773, read/write 53/47 MB/s
103: 2019-01-20 04:14:00 INFO: status: 15% (54768697344/365072220160), sparse 4% (16191148032), duration 838, read/write 55/48 MB/s
103: 2019-01-20 04:15:18 INFO: status: 16% (58442645504/365072220160), sparse 4% (16630013952), duration 916, read/write 47/41 MB/s
103: 2019-01-20 04:16:28 INFO: status: 17% (62086840320/365072220160), sparse 4% (17101987840), duration 986, read/write 52/45 MB/s
103: 2019-01-20 04:17:41 INFO: status: 18% (65776254976/365072220160), sparse 4% (17572114432), duration 1059, read/write 50/44 MB/s
103: 2019-01-20 04:18:53 INFO: status: 19% (69391876096/365072220160), sparse 4% (17983782912), duration 1131, read/write 50/44 MB/s
103: 2019-01-20 04:20:05 INFO: status: 20% (73038757888/365072220160), sparse 5% (18428964864), duration 1203, read/write 50/44 MB/s
103: 2019-01-20 04:21:09 INFO: status: 21% (76687671296/365072220160), sparse 5% (18865745920), duration 1267, read/write 57/50 MB/s
103: 2019-01-20 04:22:38 INFO: status: 22% (80320790528/365072220160), sparse 5% (19153211392), duration 1356, read/write 40/37 MB/s
103: 2019-01-20 04:24:02 INFO: status: 23% (83983859712/365072220160), sparse 5% (19365507072), duration 1440, read/write 43/41 MB/s
103: 2019-01-20 04:25:18 INFO: status: 24% (87626481664/365072220160), sparse 5% (19589611520), duration 1516, read/write 47/44 MB/s
103: 2019-01-20 04:26:31 INFO: status: 25% (91310981120/365072220160), sparse 5% (19868286976), duration 1589, read/write 50/46 MB/s
103: 2019-01-20 04:27:29 INFO: status: 26% (94969200640/365072220160), sparse 5% (20304920576), duration 1647, read/write 63/55 MB/s
103: 2019-01-20 04:28:26 INFO: status: 27% (98587181056/365072220160), sparse 5% (20774412288), duration 1704, read/write 63/55 MB/s
103: 2019-01-20 04:29:25 INFO: status: 28% (102245466112/365072220160), sparse 5% (21195083776), duration 1763, read/write 62/54 MB/s
103: 2019-01-20 04:30:46 INFO: status: 29% (105902112768/365072220160), sparse 5% (21563695104), duration 1844, read/write 45/40 MB/s
103: 2019-01-20 04:31:58 INFO: status: 30% (109532348416/365072220160), sparse 5% (21804822528), duration 1916, read/write 50/47 MB/s
103: 2019-01-20 04:33:02 INFO: status: 31% (113188864000/365072220160), sparse 6% (22074613760), duration 1980, read/write 57/52 MB/s
103: 2019-01-20 04:34:11 INFO: status: 32% (116846100480/365072220160), sparse 6% (22335692800), duration 2049, read/write 53/49 MB/s
103: 2019-01-20 04:35:20 INFO: status: 33% (120487608320/365072220160), sparse 6% (22564507648), duration 2118, read/write 52/49 MB/s
103: 2019-01-20 04:36:31 INFO: status: 34% (124143927296/365072220160), sparse 6% (22819328000), duration 2189, read/write 51/47 MB/s
103: 2019-01-20 04:37:35 INFO: status: 35% (127807717376/365072220160), sparse 6% (23071670272), duration 2253, read/write 57/53 MB/s
103: 2019-01-20 04:38:12 INFO: status: 35% (130172387328/365072220160), sparse 6% (23206199296), duration 2290, read/write 63/60 MB/s
103: 2019-01-20 04:38:12 ERROR: job failed with err -5 - Input/output error
103: 2019-01-20 04:38:12 INFO: aborting backup job
103: 2019-01-20 04:38:17 ERROR: Backup of VM 103 failed - job failed with err -5 - Input/output error
Ist der Agent in der VM installiert und auch in PVE aktiviert? Besteht die Möglichkeit, dass du die VM einfach mal komplett abschaltest und es danach noch mal probierst? Hast du mal die disk 1 z.B. aus dem Backup herausgenommen um zu sehen welche der beiden Disks Probleme macht? Wenn es möglich ist, vielleicht mal den Snapshot löschen und es erneut probieren.
https://pve.proxmox.com/wiki/Qemu-guest-agentWelchen Agenten meinst du?
Dann wird vermutlich auch der Agent keine Rolle spielen, aber grundsätzlich immer empfehlenswert diesen zu installieren.Ich versuche das Backup im ausgeschaltetem Zustand.
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