Amanda backup issue

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I have a fresh install of Fedora 33. I’m using Amanda to do my backups. I have used Amanda for many years. On this install, I let Fedora install the default btrfs file system. Where in the past I always used ext3 or ext4.

I have noticed that on the first backup following a reboot of the system, Amanda makes an incremental backup of my home directory that is the same size as a full backup. I believe that the reboot is causing btrfs to make a change to the home directory that causes this issue.

This has never occurred with the previous Fedora installs.

Any idea of the cause or how to trouble shoot the problem.

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2

No idea what Amanda is, so not much specific help to your problem. I just wanted to mention that one of the great features of btrfs is their capabilities of snapshots and incremental backups built into the filesystem. See:

Maybe you need to adapt your backup strategy?

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