Is it correct to copy a working luks cryptocontainer?

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mr_nu112021-04-20 01:27:56

linux

mr_nu11, 2021-04-20 01:27:56

There is a file cryptocontainer luks. It contains a database with active writing and reading. Is it correct to copy the container file as a daily backup and not slow down the database daemon.

Could it be that the file will be broken in this case.

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hint000, 2021-04-20
@mr_nu11

Could it be that the file will be broken in this case.

It will almost certainly be broken.
And slowing down the DBMS may not even be enough. It is possible to guarantee "brokenness" only when unmounting.

stopped the DBMS
unmounted the container
made a backup
mounted container
raised the DBMS

In other cases, you get a Schrödinger backup. :)
Well, or the correct method : to make a backup using the DBMS, without stopping. You can backup to another mounted cryptocontainer.