4.0.3 NFS lockup: summary

[Ed Arnold]

A while back, I posted an inquiry about lockup of the NFS daemons on a
4/280 running 4.0.3.  This lockup seemed to be provoked by an IBM RS/6000
that was writing into one of the 280's filesystems.  The NFS Jumbo Patch
did not cure the problem.

I subsequently learned of a patch known as "nfs_dw", a changed ufs_bmap.o
module, which fixes a problem with nfsd hanging on a memory page that
never gets unlocked due to a bug.  This information was provided by Hal
Stern of Sun (halstern at sun.com).

Ed Arnold * NCAR * POB 3000, Boulder, CO 80307-3000 * 303-497-1253(voice)
303-497-1137(fax) * era at ncar.ucar.edu [128.117.64.4] * era at ncario.BITNET
era at ncar.UUCP * Edward.Arnold at f809.n104.z1.FIDONET.ORG