Linux 101 : Backing up and restoring a filesystem
Before backing up a filesystem, we will need to make sure that it is healthy by using the below command:
After checking our filesystem, we need to "unmout" its partition:
If we can't "unmout" our partition, we could back it up - dump it - while its it not used by a lot of processes/users to avoid having corrupted copies:
- 0 : means a full backup
- u : it means that the file "/etc/dumpdates" will be updated after a successful backup.
- f : orders the "dump" command to "dump" the backup to a file.
Remark:
The backup file has to be on a different partition than the one we are backing up.
To restore our filesystem, we first create a fresh partition, we mount it and we "cd" into it:
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