Garbage Collection task warning unable to access non-existent chunk

[gun.k]

i have issue with TASK WARNINGS on my PBS Garbage Collection (GC) tasks resulting

warning: unable to access non-existent chunk [CHUNK_HASH_ID] required by [path_to_index_file.fidx]

Is there a recommend way to fix the Problem ?

 

[fabian]

that means you storage is either broken, or you had corrupt chunks at some point that got removed by verification..

 

[gun.k]

that means you storage is either broken, or you had corrupt chunks at some point that got removed by verification..

I have verified the backup job and got the following results in the file. What should I do next?

 

[fabian]

so chunks are missing - you should find out why (and probably delete the affected snapshots). are you using a NAS as backend for your datastore? did either the NAS or the PBS system ever crash or otherwise go down hard?

 

[gun.k]

so chunks are missing - you should find out why (and probably delete the affected snapshots). are you using a NAS as backend for your datastore? did either the NAS or the PBS system ever crash or otherwise go down hard?

Sorry for the late reply. We use a NAS as PBS datastore If we delete a corrupted snapshot, will subsequent backups be unable to restore the VM or files? Can you recommend a procedure for deleting a corrupted snapshot?

 

[fabian]

each snapshot that was verified successfully was okay at that point in time. so you just need to prune the corrupt snapshots. but I would still recommend investing time to find the reason for the corruption, else it might come back!