Comment on When using rsync to backup my /home folder to an external 1TB SSD, I run out of space, how??

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bleistift2@sopuli.xyz ⁨8⁩ ⁨hours⁩ ago

These differences really are insane. Maybe someone more knowledgeable can comment on why different tools differ so wildly in the total size they report.

I have never used BTRFS, so I must resort to forwarding googled results like this one.

Could you try compsize ~? If the Perc column is much lower than 100% or the Disk Usage column is much lower than the Uncompressed column, then you have some BTRFS-specific file-size reduction on your hands, which your external exFAT naturally can’t replicate.

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