From: "Tim" <supertimothy@web.de>
To: <linux-nfs@vger.kernel.org>
Subject: nfsv4 and gracetime / leasetime grace_period
Date: Tue, 13 Sep 2011 11:43:37 +0200 [thread overview]
Message-ID: <000801cc71f9$9cc45650$d64d02f0$@web.de> (raw)
Hi all!
First, just a question to make clear, with nfsv4 rpc.statd and nfslock are
not needed ? The Clients are not notified with sm-notify in case of a reboot
- is this correct?
But how does the notification of clients work with nfsv4?
The problem I can see is the same as described here:
http://www.digipedia.pl/usenet/thread/18978/22974/
So we have different values:
/proc/fs/nfsd/nfsv4gracetime
/proc/fs/nfsd/nfsv4leasetime
/proc/sys/fs/nfs/nlm_grace_period
If I set graceteime and grace_period to a low value, I get a faster
failover. But what do they stand for and do I need nfsv4leasetime to ?
If I set them all to 10 seconds, could that be "dangerous" (assume the
server can handle the additional load)?
I guess there isn't an easy way to delete all the locks on serverside and
explicitely tell the clients: Hey, the server has rebooted, please get a new
lock for all your files. :-)
I just would like to make failover a bit faster.
Thanks a lot!
Tim
next reply other threads:[~2011-09-13 9:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-13 9:43 Tim [this message]
2011-09-13 12:44 ` nfsv4 and gracetime / leasetime grace_period J. Bruce Fields
2011-09-13 23:18 ` supertimothy
2011-09-14 2:37 ` J. Bruce Fields
2011-09-14 6:27 ` AW: " Tim
2011-09-14 21:34 ` 'J. Bruce Fields'
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