b2422caaef
When Check == 0 (check all pieces), there is nearly always a piece left in the retry count, so most segments get logged in segments-retry.csv. This change makes it so we require retry>5 before adding to segments-retry.csv (only in the check==0 case). Change-Id: Iaea523c27eb777e3c248c27c7ef5effe77ae54cf |
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|---|---|---|
| .. | ||
| batch.go | ||
| csv_test.go | ||
| csv.go | ||
| main.go | ||
| node_check_test.go | ||
| node_check.go | ||
| nodealias.go | ||
| process_test.go | ||
| process.go | ||
| README.md | ||
| service_test.go | ||
| service.go | ||
| summarize.go | ||
| verify_test.go | ||
| verify.go | ||
segment-verify is a tool for verifying the segments.
High Level Overview
segment-verify verifies segment status on storage nodes in a few stages:
- First it loads the metabase for a batch of
--service.batch-size=10000segments. - They are then distributed into queues using every storage nodes. It will preferentially choose nodes specified in
--service.priority-nodes-pathfile, one storagenode id per line. - Then it will query each storage node a single byte for each segment.
--service.concurrency=1000concurrent connections at a time are made. - Every segment will be checked
--service.check=3times. However, any failed attempt (e.g. node is offline) is only retried once. - When there are failures in verification process itself, then those segments are written into
--service.retry-path=segments-retry.csvpath. - When the segment isn't found at least on one of the nodes, then it's written into
--service.not-found-path=segments-not-found.csvfile.
There are few parameters for controlling the verification itself:
# This allows to throttle requests, to avoid overloading the storage nodes.
--verify.request-throttle minimum interval for sending out each request (default 150ms)
# When there's a failure to make a request, the process will retry after this duration.
--verify.order-retry-throttle duration how much to wait before retrying order creation (default 50ms)
# This is the time each storage-node has to respond to the request.
--verify.per-piece-timeout duration duration to wait per piece download (default 800ms)
# Just the regular dialing timeout.
--verify.dial-timeout duration how long to wait for a successful dial (default 2s)
# This allows to specify the minimum node version that has the Exists endpoint.
--verify.version-with-exists string minimum storage node version with implemented Exists method (default "v1.69.2")
Running the tool
- by specifying range boundaries:
segment-verify run range --low 00 --high ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff --config-dir ./satellite-config-dir
- by specifying buckets to be checked:
segment-verify run buckets --buckets-csv bucket.csv