NVP vProxy: VM-Backup sichert nicht zugewiesenen Speicherplatz als geänderte Daten

Eine VM verfügt beispielsweise über die folgende Festplattenkonfiguration und -nutzung:

Während VM-Backups wird Folgendes im VM-Backupsitzungsprotokoll protokolliert:

YYYY-MM-DDT22:00:26Z INFO:   [94] Queried CBT data relative to '52 68 e2 45 c1 72 2a 28-60 2b 7c d3 20 2f b1 7c/45', for 'Hard disk 1'.
YYYY-MM-DDT22:00:27Z NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDT22:00:27Z NOTICE: [94] Used bytes = 160410107904, changed bytes = 113753849856, change rate = 070.91%.
YYYY-MM-DDT22:00:27Z INFO:   [94] File block exclusion: No objects to exclude from the backup
YYYY-MM-DDT22:00:29Z NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDT22:00:29Z INFO:   [94] Queried CBT data relative to '52 c5 cb 19 01 05 07 a7-33 ad 3c 83 ed ae 88 f3/45', for 'Hard disk 2'.
YYYY-MM-DDT22:00:29Z NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDT22:00:29Z NOTICE: [94] Used bytes = 15393120845824, changed bytes = 14654092869632, change rate = 095.20%.
YYYY-MM-DDT22:00:29Z INFO:   [94] File block exclusion: No objects to exclude from the backup
YYYY-MM-DDT22:00:29Z NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDT22:00:29Z INFO:   [94] Queried CBT data relative to '52 cd 0c c4 5d e0 d4 23-7a c3 98 f3 cc 1f 45 63/45', for 'Hard disk 3'.
YYYY-MM-DDT22:00:29Z NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDT22:00:29Z NOTICE: [94] Used bytes = 966305775616, changed bytes = 965150244864, change rate = 099.88%.
YYYY-MM-DDT22:00:29Z INFO:   [94] File block exclusion: No objects to exclude from the backup
YYYY-MM-DDT22:00:30Z NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDT22:00:30Z INFO:   [94] Queried CBT data relative to '52 eb e8 e1 8c 3d ea 1d-ff 5d 73 da 9e 91 d0 39/48', for 'Hard disk 4'.
YYYY-MM-DDTHH:MM:SSZ NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDTHH:MM:SSZ NOTICE: [94] Used bytes = 268405047296, changed bytes = 263489847296, change rate = 098.17%.
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] File block exclusion: No objects to exclude from the backup
YYYY-MM-DDTHH:MM:SSZ NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] Queried CBT data relative to '52 f7 ec 4d 6b 8e fb bb-93 5b 29 53 9a 78 6e e0/45', for 'Hard disk 5'.
YYYY-MM-DDTHH:MM:SSZ NOTICE: [94] Blocks were realigned to 0 KB boundary.
YYYY-MM-DDTHH:MM:SSZ NOTICE: [94] Used bytes = 78411005952, changed bytes = 32001884160, change rate = 040.81%.
…
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Disk Label    |  Mode  | Bytes Moved |  Read Rate   |  Write Rate  |     Overhead  |   VDDK Wait   |   Total Time  | VM MORef  | VM Name                       
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: ------------- | ------ | ----------- | ------------ | ------------ | ------------- | ------------- | ------------- | --------- | ------------------------------
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Hard disk 3   | hotadd |     899 GiB |    491 MiB/s |    179 MiB/s |       0:00:17 |        4.4 us |       1:27:52 | vm-11883  | VM_NAME                  
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Hard disk 4   | hotadd |     246 GiB |    559 MiB/s |    238 MiB/s |       0:00:18 |        4.1 us |       0:21:06 | vm-11883  | VM_NAME                  
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Hard disk 1   | hotadd |     106 GiB |    776 MiB/s |    222 MiB/s |       0:00:19 |        4.5 us |       0:10:29 | vm-11883  | VM_NAME                  
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Hard disk 5   | hotadd |      30 GiB |    662 MiB/s |    147 MiB/s |       0:00:19 |        4.5 us |       0:04:12 | vm-11883  | VM_NAME                  
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Hard disk 2   | hotadd |      14 TiB |    604 MiB/s |    252 MiB/s |       0:00:20 |        5.1 us |      16:01:26 | vm-11883  | VM_NAME                  
YYYY-MM-DDTHH:MM:SSZ INFO:   [94] DiskStats: Total         |        |      15 TiB |    596 MiB/s |    245 MiB/s |       0:01:36 |       22.7 us |      18:05:08 | vm-11883  | VM_NAME 

Die VM-Backupsitzungsprotokolle finden Sie auf dem vProxy unter:

• /opt/emc/vproxy/runtime/logs/recycle/vbackupd/date

• Linux:/nsr/logs/policy/PolicyName/WorkflowName/
• Windows: ..\Program Files\EMC NetWorker\nsr\logs\policy\PolicyName\WorkflowName

Dieses Problem tritt außerhalb von NetWorker auf. Inkrementelle Backups werden mithilfe von VMware Change Block Tracking (CBT) berechnet.

Setzen Sie Change Block Tracking (CBT) für die VMs zurück, bei denen dieses Problem auftritt.

Siehe VMware-Dokumentation: Zurücksetzen von Changed Block Tracking für virtuelle VMware vSphere-Maschinen (2139574) (externer Link)

Es wird empfohlen, sich an den VMware-Support zu wenden, wenn Unterstützung bei diesem Verfahren erforderlich ist, und alle Probleme zu untersuchen, die bei CBT beobachtet wurden.