NFS lock recovery problem if subtree_check option used
Subsystems (2)
Hi ,
I am facing new problem in NFS lock krecovery
on sles9 sp1 beta2 release.
This problem was not there in slses9 rc5 release.
PROBLEM:
NFS stale handle error if client tries to reclaim lock for filesystem exported with subtree_check option
DESCRIPTION:
1.I exported whole filesystem to client using rw ,
no_root_squash option.By default subtree_check option is enabled.
2.When server restarts and client tries to
reclaim lock , it gets NFS_STALE_FH error.
3.If server exports filesystem system with
additional option no_subtree_check client then faces no problems.
4.Problem is in function nfs_acceptable
function(nfsfh.c) or functions calling nfs_acceptable function.This function somehow returns 0 which means invalid handle.
5.Message in /var/log/message file
"nfs_acceptable failed at ...."
HOW TO SETUP:
1.Set up two systems with a shared disk
2.start nfs server on first system and export
filesystem present on shared disk to client
with rw,no_root_squash option.
3.Let client reclaim lock .
4.Stop nfs server on first system before client
releases lock.
5.Now , start nfs server on second system.
6.Client gets NFS_STALE_FH error when it tries
to reclaim lock
If i am missing anything or somebody else
is facing same problem please let me know.
thanks,
kiran
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fr den 19.11.2004 Klokka 03:10 (-0800) skreiv mehta kiran:
Quoted 9 lines
Hi ,
I am facing new problem in NFS lock krecovery
on sles9 sp1 beta2 release.
This problem was not there in slses9 rc5 release.
PROBLEM:NFS stale handle error if client tries to reclaim lock for filesystem exported with
subtree_checkoption
That is a known server bug, and is not just limited to locks. Neil committed the following fix to Bitkeeper not too long ago.
http://linux.bkbits.net:8080/linux-2.6/user=neilb/gnupatch@41997cc5nwxi8SY_jN4yhIPUSu_yVA
Cheers,
Trond
Signature · 12 lines
Trond Myklebust <[email protected]> ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 _______________________________________________ NFS maillist - [email protected] https://lists.sourceforge.net/lists/listinfo/nfs