[kwlug-disc] rsync skips TrueCrypt file without checksum flag

[Jason Eckert]

It could be because TrueCrypt is putting data into an alternate data
stream, and some programs won't touch files that have it.
On the Windows machine that created the TrueCrypt file, open PowerShell and
run 'Get-Item filename -stream *' to see if it has one or more alternate
data streams (they will be shown in addition to ':DATA' (regular data
stream).
To see what data is held in any additional alternate data streams, you can
then run 'Get-Content filename -stream "name of stream"'
If it's just description or versioning information, you may be able to
remove the alternate data stream completely without affecting TrueCrypt and
this could allow rsync to checksum and work with it.

On Sun, 23 Jun 2024 at 19:05, Mikalai Birukou <mb at 3nsoft.com> wrote:

> I want to report the following observation relating rsync and having
> checksum or not.
>
> I have, ... . No. Under my supervision and care there is windows machine
> that backs up its data into TrueCrypt bucket/file on external drive.
> This file gets copied from drive elsewhere with rsync.
>
> Well. Apparently, TrueCrypt is doing a good job of hiding, and
> timestamps don't change on the file. Size doesn't change by nature of
> it. As a result, rsync won't archive it, unless checksum is used.
>
> Or, if you happen to rsync TrueCrypt buckets/files, you have this
> observation to double check is data flow goes as expected.
>
>
>
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