VMware: WARNING: VFAT: 155: File_Ioctl

Today I was troubleshooting a disconnected vSphere 4.1 u1 host in the vCenter cluster by a customer. After connecting ILO and troubleshooting the vmkernel log I saw some errors flooding:

WARNING: VFAT: 155: File_Ioctl
Feb 10 21:56:45 vmkernel: 2:03:12:35.935 cpu0:672979)WARNING: VFAT: NotSupported_File_Ioctl:155: File_Ioctl
Aug 15 16:30:59 vmkernel: 122:14:58:30.147 cpu7:45795719)WARNING: VFAT: 155: File_Ioctl

Solution:

These messages are generated by the VMware ESXi BusyBox implementation during interactions with the host’s filesystems.

These messages are informational and can be safely ignored.

This issue is resolved in ESXi 4.1 Update 2.

Source: VMware

About Author

Sander

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant / Technical Project Lead at Unica ICT Solutions. Sander has 15+ years experience in IT, primary focus: virtualization, security and modern worksplace.

See author's posts