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I'm now using Ubuntu 10.04 with ext4 and for the second time in my life I experienced data loss (not for real: I got backups) and I'm assuming problems with the recent ext4 fs.

I want to restore all of my configurations (/etc and the like), data and home on reiserFS: is this possible? What to do in order to accomplish that?

(Of course I'll be more than happy if it's possible to just migrate from one filesystem to another...)

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2 Answers 2

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Well, it depends on how the backup is stored...

If it's stored as a compressed archive of files, then it's filesystem independent, and should be able to be restored on any filesystem by simply extracting the archive.

If it's an image of the partition (created by something like dd if=/dev/sda1 of=mybackup.img) then you can't. But you should be able to restore to ext4 and then copy over to another reiserFS partition...

If it's another method, it's likely there's a way, but the exact procedure depends on the storage method...

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I thought it was possible because I'm using Simple Backup ( that basically stores the chosen files within tar packages. My primary concern was about the fact that different filesystem has different files IDs, and so symbolic links will not work: perhaps some configurations wouldn't work as well... – dag729 Sep 30 '10 at 22:16

In essence, block level backups (like dd) store filesystem information and can't be restored to a different filesystem.

File level backups (like tar) only store the files and can be restored on to any filesystem.

If you're restoring an OS, you need to make sure the OS and Bootloader can boot off of the new filesystem.

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