[QUESTION]: Is Badger rsync friendly during db in use ?

[sancar]

[QUESTION]: Is Badger rsync friendly during db in use ?

[solracsf]

Same. Because when we run a badger info on a rsync backup, we get:

failed to open database err:
while opening memtables error:
while opening fid:
70 error:
while updating skiplist error:
end offset:
7764549 < size: 134217728 error:
Log truncate required to run DB. This might result in data loss

github.com/dgraph-io/badger/v4.init
        /home/runner/work/badger/badger/errors.go:101
runtime.doInit
        /opt/hostedtoolcache/go/1.19.11/x64/src/runtime/proc.go:6331
runtime.doInit
        /opt/hostedtoolcache/go/1.19.11/x64/src/runtime/proc.go:6308
runtime.doInit
        /opt/hostedtoolcache/go/1.19.11/x64/src/runtime/proc.go:6308
runtime.main
        /opt/hostedtoolcache/go/1.19.11/x64/src/runtime/proc.go:233
runtime.goexit
        /opt/hostedtoolcache/go/1.19.11/x64/src/runtime/asm_amd64.s:1594

But, if we make a badger backup of that rsync backup folder, followed by a badger restore, no more errors on that DB copy restore using badger info...

[dezren39]

related: #1883 (comment)