* sync: When run in a view branch, refresh the view branch to reflect any
changes that have been made to the parent branch or metadata.
This is basically working, but probably needs some more work to deal with
all the edge cases of things sync does.
Sponsored-by: Lawrence Brogan on Patreon
* view: New field?=glob and ?tag syntax that includes a directory "_"
in the view for files that do not have the specified metadata set.
* Added annex.viewunsetdirectory git config to change the name of the
"_" directory in a view.
When in a view using the new syntax, old git-annex will fail to parse the
view log. It errors with "Not in a view.", which is not ideal. But that
only affects view commands.
annex.viewunsetdirectory is included in the View for a couple of reasons.
One is to avoid needing to warn the user that it should not be changed when
in a view, since that would confuse git-annex. Another reason is that it
helped with plumbing the value through to some pure functions.
annex.viewunsetdirectory is actually mangled the same as any other view
directory. So if it's configured to something like "N/A", there won't be
multiple levels of directories, which would also confuse git-annex.
Sponsored-By: Jack Hill on Patreon
S3: Support a region= configuration useful for some non-Amazon S3
implementations. This feature needs git-annex to be built with aws-0.24.
datacenter= sets both the AWS hostname and region in one setting, which is
easy when using AWS, but not useful for other hosts. So kept datacenter
as-is, but added this additional config.
Sponsored-By: Brett Eisenberg on Patreon
Use separate stages for download and upload. In the common case where
it downloads the file from one remote and then uploads to the other,
those are by far the most expensive operations, and there's a decent
chance the two remotes bottleneck on different resources.
Suppose it's being run with -J2 and a bunch of 10 mb files. Two threads
will be started both downloading from the src remote. They will probably
finish at the same time. Then two threads will be started uploading to
the dst remote. They will probably take the same time as well. Before
this change, it would alternate back and forth, bottlenecking on src and dst.
With this change, as soon as the two threads start uploading to dst, two
more threads are able to start, downloading from src. So bandwidth to
both remotes is saturated more often.
Other commands that use transferStages only send in one direction at a
time. So the worker threads for the other direction will sit idle, and
there will be no change in their behavior.
Sponsored-by: Dartmouth College's DANDI project
