Implementation was simple because it's equivilant to
--from=foo --to remote for each other remote, followed by
--to remote when there's a local copy.
(Or, in the edge case of --from-anywhere --to=here,
it's the same as --to=here.)
Note that, when the local repo does not have a copy,
fromToPerform gets it from a remote, sends it to the destination,
and drops the local copy. Another call to that for a second remote
will notice that the dest now has a copy, and simply drop from the
second remote, avoiding a second transfer.
Also note that, when numcopies doesn't allow dropping it from
everywhere, it will drop it from the cheapest remotes first
(maybe not ideal) up to more expensive remotes, and finally from the local
repo. So the local repo will generally end up holding a copy. Maybe not
ideal in all cases either, but it seems no worse to do that than to end up
with a copy undropped from a remote.
And I'm not entirely happy with the output, eg:
copy bigfile (from r3...) ok
copy bigfile ok
That makes sense if you think of the second line as being
the same as what is output by `git-annex copy bigfile --to bar`,
but it's less clear in this context. Maybe add "(from here...)"?
Also the --json output doesn't have a machine-readable field for
the "from" uuid, and maybe it should?
Sponsored-by: Dartmouth College's DANDI project
Make git-annex get/copy/move --from foo override configuration of
remote.foo.annex-ignore, as documented.
This already worked for remotes supporting hasKeyCheap. For others though,
git-annex copy --from foo would silently not do anything, while
git-annex copy --to foo would use the annex-ignored remote.
Also improved the annex-ignore docs, to reflect that `git-annex get`
without --from will skip using annex-ignored remotes, for example.
Sponsored-by: Dartmouth College's DANDI project
It's a semi-common point of confusion that numcopies is not something
these commands go out and copy files around specifically to satisfy,
without further configuration in preferred content. So this is a good
addition, but it also seemed too long and too specific to the user's
particular situation.
I got bitten several times in the past by the fact that local preferred
content expressions are not violated (even temporarily) in order to
satisfy numcopies or other remotes' preferred content expressions.
Mostly in the form of the local repo not allowing arbitrary files in
(e.g. because it's set to only want `present` files). This note I add
here explains how to get out of this situation with
`approxlackingcopies=1`.
It might be too specific for this manpage, but I didn't find a better
place to put it.
