[Solved] You tried to restore a Docker volume backup with this command:docker run --rm -v mydata:/data busybox tar cvf /backup/mydata.tar /dataBut the backup file is empty. What is the likely mistake? | Docker

Docker - Production Patterns

You tried to restore a Docker volume backup with this command:

docker run --rm -v mydata:/data busybox tar cvf /backup/mydata.tar /data

But the backup file is empty. What is the likely mistake?

AUsing <code>tar cvf</code> instead of <code>tar xvf</code> to restore

BMounting the volume at the wrong path

CCreating a backup instead of restoring

DNot specifying the <code>-C</code> option to change directory

Step-by-Step Solution

Solution:

Step 1: Identify the command purpose
tar cvf creates an archive (backup), not restore.
Step 2: Understand the mistake
The command tries to create a backup but is used when intending to restore, so the backup file is empty or incorrect.
Final Answer:
Creating a backup instead of restoring -> Option C
Quick Check:
tar cvf = backup, not restore [OK]

Quick Trick: tar cvf creates backup; use tar xvf to restore [OK]

Common Mistakes:

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