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| author | Alex Auvolat <alex@adnab.me> | 2023-11-27 11:52:57 +0100 |
|---|---|---|
| committer | Alex Auvolat <alex@adnab.me> | 2023-11-27 11:52:57 +0100 |
| commit | d6d239fc7909cbd017da6ea35cceb3d561a87cca (patch) | |
| tree | 18725effafdd990d7e2953adcc1b50399673caed /src/rpc/layout/schema.rs | |
| parent | 3ecd14b9f6202ad3c5513c6ad7422bd408134002 (diff) | |
| download | garage-d6d239fc7909cbd017da6ea35cceb3d561a87cca.tar.gz garage-d6d239fc7909cbd017da6ea35cceb3d561a87cca.zip | |
block manager: read_block using old layout versions if necessary
Diffstat (limited to 'src/rpc/layout/schema.rs')
| -rw-r--r-- | src/rpc/layout/schema.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/rpc/layout/schema.rs b/src/rpc/layout/schema.rs index 00a2c017..08db44ca 100644 --- a/src/rpc/layout/schema.rs +++ b/src/rpc/layout/schema.rs @@ -193,12 +193,18 @@ mod v010 { use std::collections::BTreeMap; pub use v09::{LayoutParameters, NodeRole, NodeRoleV, ZoneRedundancy}; + pub const OLD_VERSION_COUNT: usize = 5; + /// The history of cluster layouts, with trackers to keep a record /// of which nodes are up-to-date to current cluster data #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)] pub struct LayoutHistory { /// The versions currently in use in the cluster pub versions: Vec<LayoutVersion>, + /// At most 5 of the previous versions, not used by the garage_table + /// module, but usefull for the garage_block module to find data blocks + /// that have not yet been moved + pub old_versions: Vec<LayoutVersion>, /// Update trackers pub update_trackers: UpdateTrackers, @@ -300,6 +306,7 @@ mod v010 { }; Self { versions: vec![version], + old_versions: vec![], update_trackers: UpdateTrackers { ack_map: update_tracker.clone(), sync_map: update_tracker.clone(), |