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Add the ability to start and stop pools
This commit replaces the previous approach of unlocking encrypted pools with full support for starting and stopping pools. Locked encrypted pools are now simply considered stopped. The behavior of stopping pools is as follows. A pool that is started when the system shuts down will be started after booting the system again. A pool that is stopped will remain stopped and will not be set up until it is started again. This operation requires a change to the metadata schema to store whether a pool is stopped or started. Migration from older versions of stratisd is handled. Stopping an encrypted pool will lock all of the encrypted devices.
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| Original file line number | Diff line number | Diff line change |
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| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
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| use dbus_tree::{Access, EmitsChangedSignal, Factory, MTSync, Method, Property}; | ||
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| use crate::{ | ||
| dbus_api::{ | ||
| api::{ | ||
| manager_3_2::{ | ||
| methods::{refresh_state, start_pool, stop_pool}, | ||
| props::get_stopped_pools, | ||
| }, | ||
| prop_conv::StoppedOrLockedPools, | ||
| }, | ||
| consts, | ||
| types::TData, | ||
| }, | ||
| engine::Engine, | ||
| }; | ||
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| pub fn start_pool_method<E>( | ||
| f: &Factory<MTSync<TData<E>>, TData<E>>, | ||
| ) -> Method<MTSync<TData<E>>, TData<E>> | ||
| where | ||
| E: 'static + Engine, | ||
| { | ||
| f.method("StartPool", (), start_pool) | ||
| .in_arg(("pool_uuid", "s")) | ||
| .in_arg(("unlock_method", "(bs)")) | ||
| // In order from left to right: | ||
| // b: true if the pool was newly started | ||
| // o: pool path | ||
| // oa: block device paths | ||
| // oa: filesystem paths | ||
| // | ||
| // Rust representation: bool | ||
| .out_arg(("result", "(b(oaoao))")) | ||
| .out_arg(("return_code", "q")) | ||
| .out_arg(("return_string", "s")) | ||
| } | ||
|
|
||
| pub fn stop_pool_method<E>( | ||
| f: &Factory<MTSync<TData<E>>, TData<E>>, | ||
| ) -> Method<MTSync<TData<E>>, TData<E>> | ||
| where | ||
| E: 'static + Engine, | ||
| { | ||
| f.method("StopPool", (), stop_pool) | ||
| .in_arg(("pool", "o")) | ||
| // In order from left to right: | ||
| // b: true if the pool was newly stopped | ||
| // s: string representation of UUID of stopped pool | ||
| // | ||
| // Rust representation: (bool, String) | ||
| .out_arg(("result", "(bs)")) | ||
| .out_arg(("return_code", "q")) | ||
| .out_arg(("return_string", "s")) | ||
| } | ||
|
|
||
| pub fn refresh_state_method<E>( | ||
| f: &Factory<MTSync<TData<E>>, TData<E>>, | ||
| ) -> Method<MTSync<TData<E>>, TData<E>> | ||
| where | ||
| E: 'static + Engine, | ||
| { | ||
| f.method("RefreshState", (), refresh_state) | ||
| .out_arg(("return_code", "q")) | ||
| .out_arg(("return_string", "s")) | ||
| } | ||
|
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||
| pub fn stopped_pools_property<E>( | ||
| f: &Factory<MTSync<TData<E>>, TData<E>>, | ||
| ) -> Property<MTSync<TData<E>>, TData<E>> | ||
| where | ||
| E: 'static + Engine, | ||
| { | ||
| f.property::<StoppedOrLockedPools, _>(consts::STOPPED_POOLS_PROP, ()) | ||
| .access(Access::Read) | ||
| .emits_changed(EmitsChangedSignal::True) | ||
| .on_get(get_stopped_pools) | ||
| } |
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