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49307d554d
This is a rewrite of machined. It addresses some of the limitations and
complexity in the implementation. This introduces the idea of a
controller. A controller is responsible for managing the runtime, the
sequencer, and a new state type introduced in this PR.
A few highlights are:
- no more event bus
- functional approach to tasks (no more types defined for each task)
- the task function definition now offers a lot more context, like
access to raw API requests, the current sequence, a logger, the new
state interface, and the runtime interface.
- no more panics to handle reboots
- additional initialize and reboot sequences
- graceful gRPC server shutdown on critical errors
- config is now stored at install time to avoid having to download it at
install time and at boot time
- upgrades now use the local config instead of downloading it
- the upgrade API's preserve option takes precedence over the config's
install force option
Additionally, this pulls various packes in under machined to make the
code easier to navigate.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
90 lines
2.5 KiB
Go
90 lines
2.5 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package mount
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import (
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"fmt"
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"log"
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"golang.org/x/sys/unix"
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"github.com/talos-systems/talos/pkg/blockdevice/probe"
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"github.com/talos-systems/talos/pkg/constants"
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)
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// SystemMountPointsForDevice returns the mountpoints required to boot the system.
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// This function is called exclusively during installations ( both image
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// creation and bare metall installs ). This is why we want to look up
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// device by specified disk as well as why we don't want to grow any
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// filesystems.
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func SystemMountPointsForDevice(devpath string) (mountpoints *Points, err error) {
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mountpoints = NewMountPoints()
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for _, name := range []string{constants.EphemeralPartitionLabel, constants.BootPartitionLabel} {
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var target string
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switch name {
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case constants.EphemeralPartitionLabel:
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target = constants.EphemeralMountPoint
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case constants.BootPartitionLabel:
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target = constants.BootMountPoint
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}
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var dev *probe.ProbedBlockDevice
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if dev, err = probe.DevForFileSystemLabel(devpath, name); err != nil {
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if name == constants.BootPartitionLabel {
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// A bootloader is not always required.
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log.Println("WARNING: no boot partition was found")
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continue
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}
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return nil, fmt.Errorf("probe device for filesystem %s: %w", name, err)
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}
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// nolint: errcheck
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defer dev.Close()
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mountpoint := NewMountPoint(dev.Path, target, dev.SuperBlock.Type(), unix.MS_NOATIME, "")
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mountpoints.Set(name, mountpoint)
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}
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return mountpoints, nil
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}
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// SystemMountPointForLabel returns a mount point for the specified device and label.
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func SystemMountPointForLabel(label string, opts ...Option) (mountpoint *Point, err error) {
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var target string
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switch label {
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case constants.EphemeralPartitionLabel:
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target = constants.EphemeralMountPoint
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opts = append(opts, WithResize(true))
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case constants.BootPartitionLabel:
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target = constants.BootMountPoint
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default:
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return nil, fmt.Errorf("unknown label: %q", label)
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}
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var dev *probe.ProbedBlockDevice
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if dev, err = probe.GetDevWithFileSystemLabel(label); err != nil {
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// A boot partitition is not required.
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if label == constants.BootPartitionLabel {
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return nil, nil
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}
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return nil, fmt.Errorf("failed to find device with label %s: %w", label, err)
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}
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// nolint: errcheck
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defer dev.Close()
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mountpoint = NewMountPoint(dev.Path, target, dev.SuperBlock.Type(), unix.MS_NOATIME, "", opts...)
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return mountpoint, nil
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}
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