Shulou(Shulou.com)06/02 Report--

What is the method and function of VMware's VMFSdisklocking disk locking? in order to solve this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

VMFS is a file system developed by VMware, and the latest version of VMFS 6 has the following features:

1. Support highly concurrent read and write disks

2. The file block sizes are 1m and 512m, which are especially suitable for storing virtual machine files. In fact, virtual machine files also have several K-sized vmx files, such as taking up a single 1m space, is also very wasteful. As a result, VMware developed a subblock technology that opens up 64K subblock areas. Version 5.5 has only 32K.

3. It can be expanded dynamically.

4. Multi-level locking of disk is supported to ensure the security of multi-user concurrent read and write.

5. Disk devices that support 4K native

6. Support automatic space recovery

To prevent multiple virtual machines from writing to disk at the same time, and to avoid damage to meta data VMware, the file system developed by VMFS supports three disk locking modes:

1) ATS (Atomic Test & Set)

2) SCSI ()

3) ATS + SCSI

# esxcli storage vmfs lockmode list// the following information is displayed on my computer: Volume Name: datastore1UUID: 5d653d15-3352555a-55d3-000c298b51e3Type: VMFS-6Locking Mode: ATS+SCSIATS Compatible: falseATS Upgrade Modes: NoneATS Incompatibility Reason: Device does not support ATS the answer to the question about the method and function of VMFSdisklocking disk locking in VMware is shared here. I hope the above content can be of some help to you, if you still have a lot of questions unsolved. You can follow the industry information channel for more related knowledge.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.