vmkernel WARNING VFAT 154 File_Ioctl

[chouse]

Anybody seen these types of messages come across from ESXi 4 syslog? What do they mean? They seem to happen every 10 minutes or so.

Jan 28 12:38:22 esx06 vmkernel: 12:16:46:53.792 cpu2:6189634)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:38:34 vdi31 vmkernel: 2:22:30:59.984 cpu3:1398003)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:39:14 vdi28 vmkernel: 1:16:56:26.539 cpu7:834827)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:39:34 vdi30 vmkernel: 2:22:25:00.252 cpu5:1434019)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:40:18 vdi10 vmkernel: 6:20:39:07.654 cpu2:3229202)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:40:46 vdi05 vmkernel: 7:18:10:39.230 cpu1:3816966)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:42:30 vdi12 vmkernel: 2:22:35:40.011 cpu1:1398772)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:43:16 vdi22 vmkernel: 7:18:12:52.294 cpu0:4072428)WARNING: VFAT: 154: File_Ioctl

Jan 28 12:43:43 vdi16 vmkernel: 2:17:18:16.619 cpu4:1342287)WARNING: VFAT: 154: File_Ioctl

Google was not helpful.

[supahted]

I am currently seeing the same errors on all ESXi 4 servers of one of my customers.

@chouse: did you found any additional information?

blog: http://vknowledge.wordpress.com/

[chouse]

Nope, couldn't even find anything really on Google!

[supahted · Accepted solution]

I checked this warning message with VMware (along with some other common errors) and posted the results in the following blog post:

http://vknowledge.wordpress.com/2010/02/10/common-vmkernel-errors/

Hope this helps!

blog: http://vknowledge.wordpress.com/

[chouse]

Nice work! I wasn't going to bother with VMware because I figured they were benign, but thanks for tracking it down. Very interesting, and glad they are addressing them with patches.