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instrumentation: instrumentation for locks. (#2584)

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- Instrumentation for locks.
- Detailed test coverage.
- Adding RPC control handler to fetch lock instrumentation.
- RPC control handlers suite tests with a test RPC server.
This commit is contained in:
Karthic Rao
2016-09-01 00:09:08 +05:30
committed by Harshavardhana
parent de67bca211
commit 07d232c7b4
20 changed files with 2132 additions and 204 deletions
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8
cmd/xl-v1.go
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@@ -178,8 +178,12 @@ func (xl xlObjects) Shutdown() error {
// HealDiskMetadata function for object storage interface.
func (xl xlObjects) HealDiskMetadata() error {
nsMutex.Lock(minioMetaBucket, formatConfigFile)
defer nsMutex.Unlock(minioMetaBucket, formatConfigFile)
// generates random string on setting MINIO_DEBUG=lock, else returns empty string.
// used for instrumentation on locks.
opsID := getOpsID()
nsMutex.Lock(minioMetaBucket, formatConfigFile, opsID)
defer nsMutex.Unlock(minioMetaBucket, formatConfigFile, opsID)
return repairDiskMetadata(xl.storageDisks)
}