Overview of FAQs
Last Updated：2020-07-20
General Problems
- What storage types are supported by CFS?
- What protocol types are supported by CFS?
- How many file systems can each user create?
- How many mount targets can be created per file system?
- Can mount targets be accessed across availability zones?
- How do I back up CFS data?
- What regions does CFS open?
- How does CFS guarantee data availability and reliability?
- How do I choose among BOS, CDS and CFS?
Billing Problems
- How does CFS charge?
- How is the real space used by a file system for billing calculated?
- How is the storage space of a regular file calculated?
- Are file holes billed?
- Will the bill continue to accrue after arrears?
NFS Protocol Problems
- NFS Protocol Versions Supported
- Why are other versions of NFS not supported?
- Operating System Versions Recommended
- Attributes Unsupported
- Mount: wrong fs type, bad option, bad superblock" is reported during mounting
- The list obtained when traversing the folder has missing items, duplicates, update lag, etc
- Client requests with the same host name and intranet IP interfere with each other
- The client cannot connect to the mount target, and the kernel log says "nfs: server XXX not responding, still trying"
- Some files with names similar to ".nfsXXXX" were found in the directory
- Low Client Throughput or QPS
- Multiple clients concurrently append write the same file data