Unable to mount the datastore on ESXI host with message: This host does not support ATS, or ATS initialization failed

Products

• VMware vCenter Server
• VMware vSphere ESXi

Issue/Introduction

• Host has lost connection with the data store.
• In the var/log/vmkernel/vmkernel.log you see message similar to

   cpu13:34177 opID=e922c397) [HB state abcdef02 offset 3616768 gen 33 stampUS 17643062981621 uuid 5783c299-xxxxxxxx-xxxx-e0db550386c6jrnl <FB 0> drv 14.61 lockImpl 4]
   cpu13:34177 opID=e922c397)WARNING: FSAts: 1498: Denying reservation access on an ATS-only vol 'Test'
   cpu13:34177 opID=e922c397)WARNING: HBX: 2227: ATS-Only VMFS volume 'Test' is not mounted. This host does not support ATS, or ATS initialization failed.
   cpu13:34177 opID=e922c397)WARNING: HBX: 2240: Failed to initialize VMFS distributed locking on volume 56f52615-xxxxxxxx-xxxx-90b11c268865: Not supported
   cpu13:34177 opID=e922c397)Vol3: 3147: Failed to get object 28 type 1 uuid 56f52615-xxxxxxxx-xxxx-90b11c268865 FD 0 gen 0 :Not supported
   cpu13:34177 opID=e922c397)WARNING: Fil3: 2469: Failed to reserve volume f530 28 1 56f52615 xxxxxxxx xxxxxxx 6588261c 0 0 0 0 0 0 0

Environment

VMware vSphere ESXi 6.x

VMware vSphere ESXi 7.x

VMware vSphere ESXi 8.x

 

Resolution

1. SSH to the ESXi host as root
2. Run below command to check the locking mode.

   esxcli storage vmfs lockmode list

   
   You see output similar to:
   

   Volume Name UUID Type Locking Mode ATS Compatible ATS Upgrade Modes ATS Incompatibility Reason
   
   ----------- ----------------------------------- ------ ------------ -------------- ----------------- ---------------------------
   
   datastore1 5714d652-xxxxxxxx-8184-a4badb2db0d4 VMFS-5 ATS+SCSI false None Device does not support ATS
   Test 56f52615-xxxxxxxx-xxxx-90b11c268865 VMFS-5 ATS true No upgrade needed
   Test1 578356c4-xxxxxxxx-xxxx-a4badb2db0d4 VMFS-5 ATS+SCSI false None Device does not support ATS
   Test2 57835724-xxxxxxxx-xxxx-a4badb2db0d4 VMFS-5 ATS+SCSI false None Device does not support ATS
   Test3 57835750-xxxxxxxx-xxxx-a4badb2db0d4 VMFS-5 ATS+SCSI false None Device does not support ATS

3. Unmount the VMFS datastore from all the ESXi hosts which are using it and keep it mounted to the ESXi on which its locking mode is showing as ATS.
4. Run the below command to set the locking mode to ATS+SCSI
   
   

   esxcli storage vmfs lockmode set -s -l VMFS_label

5. After running the above command, all the ESXi hosts which were not able to see the datastore will be able to see it now.