Thread: RSync of Large Files

file virtual machine disk @ 50gb. exists on local hard drive (/local/file) , usb external drive (/remote/file). in test, file identical in both places. boot /local/file virtual machine, create text file on desktop, shut down again. goal synchronize seemingly minor change in reasonable amount of time.

here's i've tried:
rsync --progress -c --inplace --no-w /local/file /remote/file
rsync --progress --inplace --no-w /local/file /remote/file
rsync --progress /local/file /remote/file

in each minor change case, rsync transfers full 50gb. there else can tweak? if files identical, rsync behaves expected, , not transfer 50gb.

hi imsargon

either /local or /remote ntfs? if so, may need take @ --modify-window option.

if not, think happening: in order rsync update file has take source, read blocks, checksum them, , compare them destination.

when use option --progress, may rsync copying everything, if take closer look, you'll notice transfer speed greater hardware limit (since not copying blocks identical).

hope helps,
regards.

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