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peer chunk sharing 1/8: proto definitions (#9130)

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proto: define MountRegister/MountList and MountPeer service

Adds the wire types for peer chunk sharing between weed mount clients:

* filer.proto: MountRegister / MountList RPCs so each mount can heartbeat
  its peer-serve address into a filer-hosted registry, and refresh the
  list of peers. Tiny payload; the filer stores only O(fleet_size) state.

* mount_peer.proto (new): ChunkAnnounce / ChunkLookup RPCs for the
  mount-to-mount chunk directory. Each fid's directory entry lives on
  an HRW-assigned mount; announces and lookups route to that mount.

No behavior yet — later PRs wire the RPCs into the filer and mount.
See design-weed-mount-peer-chunk-sharing.md for the full design.
This commit is contained in:
Chris Lu
2026-04-18 20:02:55 -07:00
committed by GitHub
parent 6787a4b4e8
commit d7d834b8f9
8 changed files with 1437 additions and 84 deletions
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other/java/client/src/main/proto/filer.proto
+39
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@@ -86,6 +86,13 @@ service SeaweedFiler {
}
rpc ReplicateLock(ReplicateLockRequest) returns (ReplicateLockResponse) {
}
// Peer chunk sharing — tier 1: mount-server registry.
// See design-weed-mount-peer-chunk-sharing.md for details.
rpc MountRegister (MountRegisterRequest) returns (MountRegisterResponse) {
}
rpc MountList (MountListRequest) returns (MountListResponse) {
}
}
//////////////////////////////////////////////////
@@ -197,6 +204,10 @@ message FuseAttributes {
bytes md5 = 14;
uint32 rdev = 16;
uint64 inode = 17;
int64 ctime = 18; // unix time in seconds, inode change time
int32 mtime_ns = 19; // nanosecond component of mtime (0-999999999)
int32 ctime_ns = 20; // nanosecond component of ctime (0-999999999)
int32 crtime_ns = 21; // nanosecond component of crtime (0-999999999)
}
message CreateEntryRequest {
@@ -597,3 +608,31 @@ message StreamMutateEntryResponse {
string error = 7; // human-readable error message when the operation failed
int32 errno = 8; // POSIX errno (e.g. ENOENT=2, ENOTEMPTY=66) for direct FUSE status mapping
}
//////////////////////////////////////////////////
// Peer chunk sharing — mount-server registry
//////////////////////////////////////////////////
message MountRegisterRequest {
string peer_addr = 1; // host:port where this mount serves peer chunk requests
string rack = 2; // locality label (rack); used for peer ranking
int32 ttl_seconds = 3; // how long the filer should keep this entry without a heartbeat
string data_center = 4; // locality label (data center); coarser than rack
}
message MountRegisterResponse {
}
message MountListRequest {
}
message MountListResponse {
repeated MountInfo mounts = 1;
}
message MountInfo {
string peer_addr = 1;
string rack = 2;
int64 last_seen_ns = 3;
string data_center = 4;
}