diff options
Diffstat (limited to 'src/block')
| -rw-r--r-- | src/block/manager.rs | 62 | ||||
| -rw-r--r-- | src/block/repair.rs | 26 |
2 files changed, 73 insertions, 15 deletions
diff --git a/src/block/manager.rs b/src/block/manager.rs index 017ba9da..ef48107f 100644 --- a/src/block/manager.rs +++ b/src/block/manager.rs @@ -3,7 +3,7 @@ use std::path::PathBuf; use std::sync::Arc; use std::time::Duration; -use arc_swap::ArcSwapOption; +use arc_swap::{ArcSwap, ArcSwapOption}; use async_trait::async_trait; use serde::{Deserialize, Serialize}; @@ -25,6 +25,7 @@ use garage_util::background::*; use garage_util::data::*; use garage_util::error::*; use garage_util::metrics::RecordDuration; +use garage_util::persister::Persister; use garage_util::time::*; use garage_util::tranquilizer::Tranquilizer; @@ -55,6 +56,10 @@ const RESYNC_RETRY_DELAY: Duration = Duration::from_secs(60); // The maximum retry delay is 60 seconds * 2^6 = 60 seconds << 6 = 64 minutes (~1 hour) const RESYNC_RETRY_DELAY_MAX_BACKOFF_POWER: u64 = 6; +// Resync tranquility is initially set to 2, but can be changed in the CLI +// and the updated version is persisted over Garage restarts +const INITIAL_RESYNC_TRANQUILITY: u32 = 2; + // The delay between the moment when the reference counter // drops to zero, and the moment where we allow ourselves // to delete the block locally. @@ -90,7 +95,6 @@ pub struct BlockManager { pub data_dir: PathBuf, compression_level: Option<i32>, - background_tranquility: u32, mutation_lock: Mutex<BlockManagerLocked>, @@ -100,6 +104,9 @@ pub struct BlockManager { resync_notify: Notify, resync_errors: CountedTree, + resync_persister: Persister<ResyncPersistedConfig>, + resync_persisted: ArcSwap<ResyncPersistedConfig>, + pub(crate) system: Arc<System>, endpoint: Arc<Endpoint<BlockRpc, Self>>, @@ -124,7 +131,6 @@ impl BlockManager { db: &db::Db, data_dir: PathBuf, compression_level: Option<i32>, - background_tranquility: u32, replication: TableShardedReplication, system: Arc<System>, ) -> Arc<Self> { @@ -145,6 +151,14 @@ impl BlockManager { let resync_errors = CountedTree::new(resync_errors).expect("Could not count block_local_resync_errors"); + let resync_persister = Persister::new(&system.metadata_dir, "resync_cfg"); + let resync_persisted = match resync_persister.load() { + Ok(v) => v, + Err(_) => ResyncPersistedConfig { + tranquility: INITIAL_RESYNC_TRANQUILITY, + }, + }; + let endpoint = system .netapp .endpoint("garage_block/manager.rs/Rpc".to_string()); @@ -157,12 +171,13 @@ impl BlockManager { replication, data_dir, compression_level, - background_tranquility, mutation_lock: Mutex::new(manager_locked), rc, resync_queue, resync_notify: Notify::new(), resync_errors, + resync_persister, + resync_persisted: ArcSwap::new(Arc::new(resync_persisted)), system, endpoint, metrics, @@ -716,6 +731,23 @@ impl BlockManager { Ok(()) } + + async fn update_resync_persisted( + &self, + update: impl Fn(&mut ResyncPersistedConfig), + ) -> Result<(), Error> { + let mut cfg: ResyncPersistedConfig = *self.resync_persisted.load().as_ref(); + update(&mut cfg); + self.resync_persister.save_async(&cfg).await?; + self.resync_persisted.store(Arc::new(cfg)); + self.resync_notify.notify_one(); + Ok(()) + } + + pub async fn set_resync_tranquility(&self, tranquility: u32) -> Result<(), Error> { + self.update_resync_persisted(|cfg| cfg.tranquility = tranquility) + .await + } } #[async_trait] @@ -734,6 +766,11 @@ impl EndpointHandler<BlockRpc> for BlockManager { } } +#[derive(Serialize, Deserialize, Clone, Copy)] +struct ResyncPersistedConfig { + tranquility: u32, +} + struct ResyncWorker { manager: Arc<BlockManager>, tranquilizer: Tranquilizer, @@ -758,19 +795,22 @@ impl Worker for ResyncWorker { fn info(&self) -> Option<String> { let mut ret = vec![]; + ret.push(format!( + "tranquility = {}", + self.manager.resync_persisted.load().tranquility + )); + let qlen = self.manager.resync_queue_len().unwrap_or(0); - let elen = self.manager.resync_errors_len().unwrap_or(0); if qlen > 0 { ret.push(format!("{} blocks in queue", qlen)); } + + let elen = self.manager.resync_errors_len().unwrap_or(0); if elen > 0 { ret.push(format!("{} blocks in error state", elen)); } - if !ret.is_empty() { - Some(ret.join(", ")) - } else { - None - } + + Some(ret.join(", ")) } async fn work(&mut self, _must_exit: &mut watch::Receiver<bool>) -> Result<WorkerState, Error> { @@ -778,7 +818,7 @@ impl Worker for ResyncWorker { match self.manager.resync_iter().await { Ok(ResyncIterResult::BusyDidSomething) => Ok(self .tranquilizer - .tranquilize_worker(self.manager.background_tranquility)), + .tranquilize_worker(self.manager.resync_persisted.load().tranquility)), Ok(ResyncIterResult::BusyDidNothing) => Ok(WorkerState::Busy), Ok(ResyncIterResult::IdleFor(delay)) => { self.next_delay = delay; diff --git a/src/block/repair.rs b/src/block/repair.rs index 07ff6772..18e1de95 100644 --- a/src/block/repair.rs +++ b/src/block/repair.rs @@ -19,7 +19,17 @@ use garage_util::tranquilizer::Tranquilizer; use crate::manager::*; -const SCRUB_INTERVAL: Duration = Duration::from_secs(3600 * 24 * 30); // full scrub every 30 days +// Full scrub every 30 days +const SCRUB_INTERVAL: Duration = Duration::from_secs(3600 * 24 * 30); +// Scrub tranquility is initially set to 4, but can be changed in the CLI +// and the updated version is persisted over Garage restarts +const INITIAL_SCRUB_TRANQUILITY: u32 = 4; + +// ---- ---- ---- +// FIRST KIND OF REPAIR: FINDING MISSING BLOCKS/USELESS BLOCKS +// This is a one-shot repair operation that can be launched, +// checks everything, and then exits. +// ---- ---- ---- pub struct RepairWorker { manager: Arc<BlockManager>, @@ -128,7 +138,13 @@ impl Worker for RepairWorker { } } -// ---- +// ---- ---- ---- +// SECOND KIND OF REPAIR: SCRUBBING THE DATASTORE +// This is significantly more complex than the process above, +// as it is a continuously-running task that triggers automatically +// every SCRUB_INTERVAL, but can also be triggered manually +// and whose parameter (esp. speed) can be controlled at runtime. +// ---- ---- ---- pub struct ScrubWorker { manager: Arc<BlockManager>, @@ -176,7 +192,7 @@ impl ScrubWorker { Ok(v) => v, Err(_) => ScrubWorkerPersisted { time_last_complete_scrub: 0, - tranquility: 4, + tranquility: INITIAL_SCRUB_TRANQUILITY, corruptions_detected: 0, }, }; @@ -343,7 +359,9 @@ impl Worker for ScrubWorker { } } -// ---- +// ---- ---- ---- +// UTILITY FOR ENUMERATING THE BLOCK STORE +// ---- ---- ---- struct BlockStoreIterator { path: Vec<ReadingDir>, |