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added an optional cost= configuration to all special remotes

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Note that when this is specified and an older git-annex is used to
enableremote such a special remote, it will simply ignore the cost= field
and use whatever the default cost is.

In passing, fixed adb to support the remote.name.cost and
remote.name.cost-command configs.

Sponsored-by: Dartmouth College's DANDI project
This commit is contained in:
Joey Hess 2023-01-12 13:42:28 -04:00
parent 400ce29a94
commit cfaae7e931
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25 changed files with 83 additions and 42 deletions
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10
doc/tips/using_the_web_as_a_special_remote.mdwn
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@ -128,13 +128,12 @@ about, and git-annex may use any of those urls for downloading a file.
If some urls are especially fast, or especially slow, you might want to
configure which urls git-annex prefers to use first, or should only use as
a last resory. To accomplish that, you can create additional remotes, that
are web special remotes, and are configured to only be used for some urls.
Then it's simply a matter of configuring the cost of those remotes.
are web special remotes, and are configured to only be used for some urls,
and have a different cost than the web special remote.
For example, suppose that you want to prioritize using urls on "fasthost.com".
git-annex initremote --sameas=web fasthost type=web urlinclude='*//fasthost.com/*'
git config remote.fasthost.annex-cost 150
git-annex initremote --sameas=web fasthost type=web urlinclude='*//fasthost.com/*' cost=150
Now, `git-annex get` of a file that is on both fasthost.com and another url
will prefer to use the fasthost special remote, rather than the web special
@ -145,8 +144,7 @@ remote, and use the other url.
Suppose that you want to avoid using urls on "slowhost.com", except
as a last resort.
git-annex initremote --sameas=web slowhost type=web urlinclude='*//slowhost.com/*'
git config remote.slowhost.annex-cost 300
git-annex initremote --sameas=web slowhost type=web urlinclude='*//slowhost.com/*' cost=300
Now, `git-annex get` of a file that is on both slowhost.com and another url
will first try the fasthost remote. If fasthost does not support the url,