66c504d1bb
To allow the querying of usage for snapshots, we define a new method on the snapshotter to query the resources in use by a single snapshot. Conversely, it can be said that if the snapshot was deleted, the reported amount of usage would be recovered. There are few problems with this model in the implementation of btrfs that need to be worked out. In btrfs, it is hard to resolve the amount of data usage with the use of quotas but these may report valuables that are incompatible with the model. Signed-off-by: Stephen J Day <stephen.day@docker.com>
38 lines
988 B
Protocol Buffer
38 lines
988 B
Protocol Buffer
syntax = "proto3";
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package containerd.v1;
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import "gogoproto/gogo.proto";
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// Kind defines the kind of snapshot.
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enum Kind {
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option (gogoproto.goproto_enum_prefix) = false;
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option (gogoproto.enum_customname) = "Kind";
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// KindActive represents an active snapshot
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ACTIVE = 0 [(gogoproto.enumvalue_customname) = "KindActive"];
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// KindCommitted represents a committed immutable snapshot
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COMMITTED = 1 [(gogoproto.enumvalue_customname) = "KindCommitted"];
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}
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// Snapshot defines the storage type for a snapshot in the
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// metadata store.
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message Snapshot {
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uint64 id = 1 [(gogoproto.customname) = "ID"];
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string parent = 2;
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Kind kind = 4;
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bool readonly = 5;
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// inodes stores the number inodes in use for the snapshot.
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//
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// Only valid for committed snapshots.
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int64 inodes = 6;
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// Size reports the disk used by the snapshot, excluding the parents.
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//
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// Only valid for committed snapshots, active snapshots must read the
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// current usage from the disk.
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int64 size = 7;
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}
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