Duplicate RVId handling

[jainakanksha-msft]

This change will block the user to start blobfuse with distributed_cache in case the different cache-dir have the same fileSYstem UUID.

[Copilot]

Pull Request Overview

This PR integrates the new distributed_cache component end-to-end and refactors key storage and logging APIs to support option structs and better diagnostics.

• Introduce StorageCallbackImpl and wire up CLI support for distributed_cache.
• Refactor all WriteFromBuffer and CreateDirectory calls to use an internal.WriteFromBufferOptions struct and add a SetMetadata path.
• Add new common utilities (GetNodeUUID, FS metrics, pipeline validation) and enhance logging with goroutine IDs and error injection.

Reviewed Changes

Copilot reviewed 76 out of 76 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
component/distributed_cache/storage_callback_impl.go	New callbacks implementation for distributed-cache storage
component/distributed_cache/distributed_cache_test.go	Tests covering basic configuration of the distributed cache
component/azstorage/utils.go	Respect BLOBFUSE_DISABLE_SDK_LOG env var; map CannotVerifyCopySource to ErrFileNotFound
component/azstorage/datalake.go & datalake_test.go	Refactor CreateDirectory and WriteFromBuffer signatures; update tests to use WriteFromBufferOptions
component/azstorage/block_blob.go & block_blob_test.go	Same WriteFromBuffer and SetMetadata refactor for block blobs; update tests
component/azstorage/connection.go	Update AzConnection interface signatures to match refactored methods
common/util.go	Add GetDiskSpaceMetricsFromStatfs, GetNodeUUID, UUID/IP validation, and distributed-cache pipeline rules
common/config/keys_tree.go & keys_tree_test.go	Extend config parsing to support []string; update tests
common/config/config_parser.go	Add AddStringSliceFlag for comma-separated string list flags
common/assert.go	New Assert utility for debug builds
common/log/logger.go & base_logger.go	Initialize error injection; include goroutine IDs in logs
cmd/mount.go & cmd/imports.go	Add hidden --dcache flag and import for the distributed-cache component

Comments suppressed due to low confidence (2)

common/util.go:579

• New pipeline validation rules for distributed_cache should have unit tests covering combinations with file_cache and xload to ensure the correct errors are returned.

if isDCachePresent && isFileCachePresent {

common/util.go:465

• availableSpace is undefined here; you need to compute it (e.g., availableSpace := stat.Bavail * uint64(stat.Frsize)) before returning.

return totalSpace, availableSpace, nil