ACFS-07946
string has an invalid extent node at disk offset string
Cause
File system checking has identified the metadata inconsistency reported in the message.
Action
If the message was generated by fsck with the -a switch, then no further action is needed. fsck will resolve the problem. If the message was generated by fsck without the -a switch, then run fsck with the -a switch to resolve the problem. Frequent metadata inconsistencies may point to internal errors. In this case, contact Oracle Support Services.