Error when migrating to tape

[roli8200]

Hey

Cannot migrate data to tape. It always brings:

2022-06-03T10:13:24+02:00: Starting tape backup job 'LocalData:Tape-Backup:Bandlaufwerk:Migration'
2022-06-03T10:13:24+02:00: update media online status
2022-06-03T10:13:24+02:00: media set uuid: fd5064c9-7c32-4ea3-a6b5-2384f5f71c14
2022-06-03T10:13:24+02:00: found 9 groups
2022-06-03T10:13:24+02:00: backup snapshot "vm/100/2022-05-31T22:00:07Z"
2022-06-03T10:13:24+02:00: allocated new writable media 'WO2-Montag'
2022-06-03T10:13:24+02:00: Checking for media 'WO2-Montag' in drive 'Bandlaufwerk'
2022-06-03T10:14:52+02:00: found media label WO2-Montag (5d822cf4-34fb-47d4-85dd-d92205f4dfff)
2022-06-03T10:14:52+02:00: moving to end of media
2022-06-03T10:16:16+02:00: arrived at end of media
2022-06-03T10:17:11+02:00: wrote 2083 chunks (4297.59 MB at 77.63 MB/s)
2022-06-03T10:17:52+02:00: wrote 1138 chunks (4297.06 MB at 105.82 MB/s)
2022-06-03T10:18:28+02:00: wrote 1139 chunks (4296.80 MB at 118.63 MB/s)
2022-06-03T10:19:08+02:00: wrote 1141 chunks (4296.02 MB at 108.34 MB/s)
2022-06-03T10:19:41+02:00: wrote 1121 chunks (4298.38 MB at 127.24 MB/s)
2022-06-03T10:20:17+02:00: wrote 1120 chunks (4298.38 MB at 121.01 MB/s)
2022-06-03T10:20:45+02:00: wrote 1123 chunks (4295.75 MB at 155.02 MB/s)
2022-06-03T10:21:18+02:00: wrote 1144 chunks (4299.16 MB at 130.82 MB/s)
2022-06-03T10:21:54+02:00: wrote 1129 chunks (4296.02 MB at 116.98 MB/s)
2022-06-03T10:22:43+02:00: wrote 1135 chunks (4297.06 MB at 87.65 MB/s)
2022-06-03T10:22:45+02:00: TASK ERROR: store 'LocalData', unable to load chunk 'd54f623f8696d32f38551bad719a9156dc343a95192995e1d6c80f57f054069d' - Data blob has wrong CRC checksum.

How can that be? And can I remove that chunk?

 

[dcsapak]

do you regularly run verifies on your backups? i'd do that first and see which snapshots are affected by this.
i can't say how that chunk got corrupted, but most likely due to bad storage (e.g. dying disk/network/etc.) ?