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fs: Re-implement object layer to remember the fd (#3509)

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This patch re-writes FS backend to support shared backend sharing locks for safe concurrent access across multiple servers.
This commit is contained in:
Harshavardhana
2017-01-16 17:05:00 -08:00
committed by GitHub
parent a054c73e22
commit 1c699d8d3f
68 changed files with 3860 additions and 1580 deletions
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47
cmd/routers.go
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@@ -28,53 +28,6 @@ func newObjectLayerFn() ObjectLayer {
return globalObjectAPI
}
// newObjectLayer - initialize any object layer depending on the number of disks.
func newObjectLayer(storageDisks []StorageAPI) (ObjectLayer, error) {
var objAPI ObjectLayer
var err error
if len(storageDisks) == 1 {
// Initialize FS object layer.
objAPI, err = newFSObjects(storageDisks[0])
} else {
// Initialize XL object layer.
objAPI, err = newXLObjects(storageDisks)
}
if err != nil {
return nil, err
}
// The following actions are performed here, so that any
// requests coming in early in the bootup sequence don't fail
// unexpectedly - e.g. if initEventNotifier was initialized
// after this function completes, an event could be generated
// before the notification system is ready, causing event
// drops or crashes.
// Migrate bucket policy from configDir to .minio.sys/buckets/
err = migrateBucketPolicyConfig(objAPI)
if err != nil {
errorIf(err, "Unable to migrate bucket policy from config directory")
return nil, err
}
err = cleanupOldBucketPolicyConfigs()
if err != nil {
errorIf(err, "Unable to clean up bucket policy from config directory.")
return nil, err
}
// Initialize and load bucket policies.
err = initBucketPolicies(objAPI)
fatalIf(err, "Unable to load all bucket policies.")
// Initialize a new event notifier.
err = initEventNotifier(objAPI)
fatalIf(err, "Unable to initialize event notification.")
// Success.
return objAPI, nil
}
// Composed function registering routers for only distributed XL setup.
func registerDistXLRouters(mux *router.Router, srvCmdConfig serverCmdConfig) error {
// Register storage rpc router only if its a distributed setup.