Applies to ONTAP 9 CIFS Answer Support for lease oplocks is enabled on SMB shares and volumes by default. Lease oplocks are essential for nondisruptive SMB operations in ONTAP. NetApp recommends that ...Applies to ONTAP 9 CIFS Answer Support for lease oplocks is enabled on SMB shares and volumes by default. Lease oplocks are essential for nondisruptive SMB operations in ONTAP. NetApp recommends that you do not disable them. Additional Information additionalInformation_text
Applies to Data ONTAP 9 CIFS/SMB Answer No, when enabling or disabling oplocks it takes effect immediately. No termination or restart of CIFS is required. But only new sessions will have the lat... Applies to Data ONTAP 9 CIFS/SMB Answer No, when enabling or disabling oplocks it takes effect immediately. No termination or restart of CIFS is required. But only new sessions will have the latest update. Additional Information
Opening files takes significantly longer than expected Certain CIFS shares may be impacted while others appear normal / no impact In some cases, problem occurs on VPN connection, but not local network...Opening files takes significantly longer than expected Certain CIFS shares may be impacted while others appear normal / no impact In some cases, problem occurs on VPN connection, but not local network connection In some cases, specific file types are more severely impacted In some cases, specific client applications are more severely impacted Client is sending many small operations instead of large contiguous requests Client is requesting very short read lengths
NFS (v4) client attempts to delete a file by issuing a REMOVE call, but receives NFS4ERR_FILE_OPEN An NFS client creates and writes a file for import by a CIFS client (SQL Server is a known example) C...NFS (v4) client attempts to delete a file by issuing a REMOVE call, but receives NFS4ERR_FILE_OPEN An NFS client creates and writes a file for import by a CIFS client (SQL Server is a known example) CIFS client fully reads the import file, but does not close the file proactively, preventing the NFS writer from deleting it until the oplocks held by the CIFS client expire
The latency will be seen in qos statistics volume latency show in the Data column Nblade.delayedOplockBreakAck: SMB Clients are showing delays in responding to oplock recalls, potentially due to netwo...The latency will be seen in qos statistics volume latency show in the Data column Nblade.delayedOplockBreakAck: SMB Clients are showing delays in responding to oplock recalls, potentially due to network latency, heavy processing load, or other factors impacting responsiveness. ONTAP will suspend when locks are assigned to the same file from different clients, which may result in high wait time for CREATE/OPEN calls.