Re: btrfs Backups

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On 12/8/23 12:12, Joe Zeff wrote:
On 12/08/2023 12:51 PM, Tim Evans wrote:

Thanks, Roger.  Actually, I have a dim recollection of having set up a thing called 'rnsapshot' to a NAS appliance for a client some years ago.   Nothing to do with btrfs filesystems, but IIRC this should be just what I need.  Thanks for refreshing my memory.

For many years, I've been using BackInTime (a front end for rsync) to back up my desktop to a flash drive that I've formatted to ext4.  The reason for the formatting is that if a file hasn't changed since the last backup, it's represented by a link, which is something VFAT can't do, but can save lots of space if you have some files that rarely change.  In fact, you can sometimes end up with a drive with more data stored on it (If you take the numbers given by the drive's Properties as gospel.) than the drive's known capacity.
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I can confirm Tim Evans comment.  I've been using BackInTime on a BTRFS system and I have seen no issues with it after over a year of use.

Fedora 39 with a USB attached backup disk.

~~R
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