Support for transferring sparse files via scp/sftp correctly?

Lionel Cons lionelcons1972 at gmail.com
Tue Mar 4 21:01:08 AEDT 2025


Does OpenSSH scp/sftp mode transfer sparse files correctly, i.e. are
holes skipped and not transferred as chunks of 0 bytes? [1]

We're asking about sparse files in the >= 1PB range, which consists of
multi-TB holes with around 600-2000GB of valid data.

[1] Note the difference: Sparse files can have data sections which
consist of valid 0 bytes. Holes in sparse files represent regions
where no data space is allocated, but they read as 0 bytes

Lionel


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