How to prevent panics from file system corruption

User12244231-Oracle

user13346541

From the mapage umouont_ufs:
...
         onerror = action

             This option specifies the  action  that  UFS  should
             take  to recover from an internal inconsistency on a
             file system.  Specify  action  as  panic,  lock,  or
             umount. These values cause a forced system shutdown,
             a file system lock to be applied to the file system,
             or the file system to be forcibly unmounted, respec-
             tively. The default is panic.
...

Best option is to umount the filesystem, as a lock can cause other issues even another issue will occur wih the disks/filesystem