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7ee892d95a
Purpose of this is to allow us to avoid re-downloading everything
every time we rebuild the chroot.
This maintains two directories; host and target. Future enhancement
involves collapsing this into one- this requires some host work however,
and has some potential gotchas in doing so.
Meanwhile, we now store distfiles in repo/distfiles/{host,target},
and mount bind repo/distfiles into /var/cache/distfiles.
An upgrade script in turn optimistically tries to move the content
into the new location; if it can't complete the move, it wipes the
content and the user has to redownload it (acceptable, if annoying).
BUG=chromium-os:13115
TEST=cbuildbot x86-generic-full
Change-Id: Iea96429df0e1fdc4ac0860fbce0daabc90c4c2a3
Reviewed-on: https://gerrit.chromium.org/gerrit/15189
Reviewed-by: Brian Harring <ferringb@chromium.org>
Tested-by: Brian Harring <ferringb@chromium.org>
Commit-Ready: Brian Harring <ferringb@chromium.org>
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Previously distfiles were stored entirely in the chroot, forcing us
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# to download it everytime. This content is now stored externally, exposed
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# to the chroot via mount binds.
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#
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# What we're doing here is moving any existing content from the old locations,
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# into the new locations- which will already have a mount bind in place.
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# If it *doesn't*, meaning parallel cros_sdk usage, we just wipe the content
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# (user can redownload it after all).
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#
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# Once that's done, upgrade the chroot directory structure installing
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# syms pointing back to the new location.
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upgrade_path() {
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local src="/var/lib/portage/$1"
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local dest="/var/cache/distfiles/$2"
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if [ -L "$src" ]; then
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# Already upgraded- skip this one.
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return 0
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fi
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# Suppress failures. User just has to download in that case.
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sudo find "$src"/ -maxdepth 1 -mindepth 1 -exec sudo mv -t "$dest/" {} + || :
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sudo rm -rf "$src"
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sudo ln -s ../../cache/distfiles/"$2" "$src"
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}
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upgrade_path distfiles host
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upgrade_path distfiles-target target
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exit 0
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