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Re: backup_calculate_cluster_size does not consider source


From: Dietmar Maurer
Subject: Re: backup_calculate_cluster_size does not consider source
Date: Wed, 6 Nov 2019 12:18:00 +0100 (CET)

> And if it issues a smaller request, there is no way for a guest device
> to tell it “OK, here’s your data, but note we have a whole 4 MB chunk
> around it, maybe you’d like to take that as well...?”
> 
> I understand wanting to increase the backup buffer size, but I don’t
> quite understand why we’d want it to increase to the source cluster size
> when the guest also has no idea what the source cluster size is.

Because it is more efficent.




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