A system and method for replacing file system processors, also known as hot swapping,
is described. The system and method operate on a fault-tolerant network file system
that includes a first file server that is operably connected to a network fabric
and a second file server that is operably connected to the network fabric. The
fault-tolerant network file system includes a first disk array that is operably
coupled to the first file server and to the second file server and a second disk
array that is operably coupled to the first file server and to the second file
server. First file system information is loaded on the first file server. The first
file system information includes a first intent log of proposed changes to first
metadata. Second file system information is loaded on the second file server. The
second file system information includes a second intent log of proposed changes
to second metadata. The first file server has a copy of the second metadata, and
the second file server maintains a copy of the first metadata, thereby allowing
the first file server to access files on the second disk array in the event of
a failure of the second file server.