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Conference smurf::nfs

Title:	SunNet - the defacto distributed system standard

Moderator:	CVG::PETTENGILL

Created:	Mon Jun 02 1986
Last Modified:	Fri May 16 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	479
Total number of notes:	1270

475.0. "ubc-nfsloopback parameter??" by NQOS01::16.132.176.15::Workbench () Mon Mar 31 1997 11:38

Folks,

Could someone please describe the purpose and use of the ubc-nfsloopback
parameter?  (Is this documented somewhere?)

Thanks.

T.R Title User Personal
Name Date Lines

475.1 Answered in digital_unix NQOS01::nqsrv415.nqo.dec.com::Workbench Wed Apr 02 1997 22:59 27

T.R	Title	User	Personal Name	Date	Lines
475.1	Answered in digital_unix	NQOS01::nqsrv415.nqo.dec.com::Workbench		`Wed Apr 02 1997 22:59`	27
	<<< TURRIS::DISK$NOTES_PACK2:[NOTES$LIBRARY]DIGITAL_UNIX.NOTE;1 >>> -< DIGITAL UNIX >- ============================================================================== =, Note: 9345.1 ubc-nfsloopback parameter?? 1 of 1 NETRIX::"[email protected]" "Sri" 15 lines 1-APR-1997 17:00 -< ubc-nfsloopback is to avoid deadlocks and improve performance of local nfs mo� ------------------------------------------------------------------------------ -- Hi, This fixes a deadlock when using NFS loopback, mounts. If the configurable ubc_nfsloopback is set, all dirty pages will be skipped while performing a critical routine thus, avoiding deadlock situation(s). NFS loopback mounts, i.e., mounting an NFS filesystem as a client on the same system it is served from. Even if you're not doing loopback mounts, this is a good parameter to have, as it fixes numerous related problems, and thus increases performance. -Sri [Posted by WWW Notes gateway]

      <<< TURRIS::DISK$NOTES_PACK2:[NOTES$LIBRARY]DIGITAL_UNIX.NOTE;1 >>>
                               -< DIGITAL UNIX >-
==============================================================================
=,
Note: 9345.1                 ubc-nfsloopback parameter??              1 of 1
NETRIX::"[email protected]" "Sri"                    15 lines   1-APR-1997 
17:00
-< ubc-nfsloopback is to avoid deadlocks and improve performance of local nfs 
mo�
------------------------------------------------------------------------------
--
Hi,

        This fixes a deadlock when using NFS loopback, mounts.
If the configurable ubc_nfsloopback is set, all dirty
pages will be skipped while performing a critical routine thus,
avoiding deadlock situation(s). NFS loopback mounts, i.e.,
mounting an NFS filesystem as a client on the same system
it is served from. Even if you're not doing loopback mounts, this
is a good parameter to have, as it fixes numerous related problems,
and thus increases performance.

-Sri

        
[Posted by WWW Notes gateway]