When event log KARS03229-E (indicating that the maximum I/O transfer length was exceeded) is output, troubleshoot the failure according to the compute port you are using.
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If the compute port is iSCSI or FC:
The transfer length per I/O request that reaches the volume from the compute node must be 8 MiB or less.
If the maximum transfer length of the compute node exceeds 8 MiB, I/O might be sent to the storage system without being split.
Configure the settings as follows according to the OS or hypervisor you are using.
OS or hypervisor
Settings
Windows Server
See the manual of the host OS, NIC, or HBA vendor and set the maximum transfer length to 8 MiB or less.
Linux
Set max_sectors_kb to 8192 or less.
VMware ESXi
Set Disk.DiskMaxIOSize to 8192 KiB or less.
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If the compute port is NVMe/TCP:
Collect dump log files for all storage nodes and contact customer support.