Understanding the VMkernel log message: FS3: Reached maximum number of holders (1015797)
When non-exclusive locks are in use, multiple virtual machines can open and access a file's contents concurrently. This facilitates use cases such as:
- Clustering virtual machines sharing read/write access the same virtual disk.
- Linked clones of virtual machines sharing read-only access to the same parent virtual disk.
- Virtual machines sharing read-only access to an ISO in a software or operating system repository.
- Upgade the hosts to ESXi 5.1 and VMFS to version 5
- For more information on updating ESXi to version 5.1, please see Methods for upgrading to ESXi 5.1 (2032757)
- For more information on updating to VMFS 5, please see Frequently Asked Questions on VMware vSphere 5.x for VMFS-5 (2003813)
- In the case where the FS3: Reached maximum number of holders occur when ISOs or other files are being attached to the virtual machine, removing the file or placing it on a NFS volume can be a temporary workaround. NFS does not have the lock limitations.
Note: With the introduction of a new locking
mechanism in vSphere 5.1, the number of hosts that can share a read-only file on a
VMFS volume has been increased to 32. For more information, see document
VMFS File Locking and Its Impact in VMware® View™ 5.1
This restriction is described in documentation for products which leverage shared disks on vSphere ESX/ESXi:
a VMware Lab Manager environment, the vSphere cluster size is limited
to eight ESX/ESXi hosts per Datastore. If the limit is exceeded, the user
interface may also display the message:
The configuration you are trying to deploy requires consolidation of one or more virtual machines.
For more information, see Lab Manager virtual machines from a single disk chain may only run on 8 hosts when using VMFS-3/VMFS-5 (1003319) and Managing Datastores in the Lab Manager Users Guide.
- In a VMware View environment, the vSphere cluster size is limited to eight ESX/ESXi hosts. For more information, see the vSphere Clusters section of the VMware View Architeczture Planning guide.