Xz format inadequate for long-term archiving

Re:Xz format inadequate for long-term archiving by mnarayan01 on Sunday October 23, 2016 @04:52PM (#12775372)

You don't know the end of the data, but presumably(?) you know the end of the tape.

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Re:Xz format inadequate for long-term archiving by marcosdumay on Monday October 24, 2016 @05:07PM (#12782908)

We are talking past each other here...

Making a backup with tar is done by typing something like that on bash:

> tar -c - dir1 dir2 dir3 > /dev/tape

That will (hopefully, I doubt I got the tar switches right) backup those dirs into the tape (that will actually have a weird name, not '/dev/tape').

Now, in practice Linux doesn't always know the size of a tape you inserted. But this is not the issue, if you accept the seeks needed for that, you'd better write at the beginning anyway.

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