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This stage just triggers the internal code which fetches the config and writes `/run/ignition.json`; from there it'd be picked up by later stages the way it was implicitly before. This is prep for adding support for redeploying the rootfs for Fedora CoreOS; we need to have a separate process determine whether the rootfs is being replaced, and if so do a save/restore across `ignition-disks.service`. See: coreos/ignition-dracut#107 (cherry picked from commit 8926f0f)
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// Copyright 2019 Red Hat, Inc. | ||
// | ||
// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
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// The storage stage is responsible for partitioning disks, creating RAID | ||
// arrays, formatting partitions, writing files, writing systemd units, and | ||
// writing network units. | ||
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package disks | ||
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import ( | ||
"github.com/coreos/ignition/internal/config/types" | ||
"github.com/coreos/ignition/internal/exec/stages" | ||
"github.com/coreos/ignition/internal/exec/util" | ||
"github.com/coreos/ignition/internal/log" | ||
"github.com/coreos/ignition/internal/resource" | ||
) | ||
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const ( | ||
name = "fetch" | ||
) | ||
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func init() { | ||
stages.Register(creator{}) | ||
} | ||
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type creator struct{} | ||
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func (creator) Create(logger *log.Logger, root string, _ resource.Fetcher) stages.Stage { | ||
return &stage{ | ||
Util: util.Util{ | ||
DestDir: root, | ||
Logger: logger, | ||
}, | ||
} | ||
} | ||
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func (creator) Name() string { | ||
return name | ||
} | ||
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type stage struct { | ||
util.Util | ||
} | ||
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func (stage) Name() string { | ||
return name | ||
} | ||
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func (s stage) Run(_ types.Config) error { | ||
// Nothing - all we do is fetch and allow anything else in the initramfs to run | ||
s.Logger.Info("fetch complete") | ||
return nil | ||
} |
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