Hi managers,
Many thanks to Mike D Cross for an immediate response!
-------------------------------
My original question :
I have an ASE cluster with two 2100 servers running 40B. sys_check tells
me to set the parameter ubc-nfsloopback to 1 in sysconfigtab. It should
be set to 1 in cluster configurations. Before doing this, I want to know
however what the function of this parameter is. I looked in the Unix
documentation of 4.0B and 4.0D but couldn't find a reference to this
special parameter. Does anyone know where this parameter is discribed or
could anyone explain its functionality to me?
---------------------------
Mike's response :
The parameters stops the system converting NFS mount requests for local
disks into non-nfs requests.
Ie, if you have a service "ser" which contains a directory "dir" ,
and both machines in your ase cluster (a and b) both mount ser:dir /mnt.
with ubc-nfslookback = 0, one server will get ser:dir mounted while the
other will have a:dir mounted, as the disk is local. This stops fail
over.
with ubc-nfslookback = 1, both get ser:dir and fail over works.
extract from /etc/sysconfigtab:
vm:
# make system use NFS to mount local filesystems, if given as NFS
syntax.
ubc-nfsloopback=1
Mike
-------------
Regards,
Marty Cruchten
Paul Wurth S.A.
E-Mail: marty.cruchten_at_paulwurth.com
Received on Wed Sep 02 1998 - 09:26:26 NZST