From: Sverker Wiberg Subject: Re: PROBLEM: knfsd misses occasional writes (w/ WORKAROUND) Date: Fri, 17 May 2002 14:32:36 +0200 Sender: nfs-admin@lists.sourceforge.net Message-ID: References: <3CE250A5.47F71DF@uab.ericsson.se> <15586.20989.992591.474108@notabene.cse.unsw.edu.au> <3CE38E9D.986ACF7F@uab.ericsson.se> <20020516143441.A4322@laclinux.com> <3CE4DD8C.69C34A1B@uab.ericsson.se> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from to-velocet.redhat.com ([216.138.202.10] helo=touchme.toronto.redhat.com) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 178kGm-00084q-00 for ; Fri, 17 May 2002 09:07:52 -0700 Received: from toomuch.toronto.redhat.com (unknown [172.16.14.22]) by touchme.toronto.redhat.com (Postfix) with ESMTP id DA472B8036 for ; Fri, 17 May 2002 12:07:47 -0400 (EDT) Received: (from bcrl@localhost) by toomuch.toronto.redhat.com (8.11.6/8.11.2) id g4HG7l116663 for nfs@lists.sourceforge.net; Fri, 17 May 2002 12:07:47 -0400 Resent-Message-Id: <200205171607.g4HG7l116663@toomuch.toronto.redhat.com> To: linux-kernel@vger.kernel.org Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: Sverker Wiberg wrote: > Over here, we started to log the conversations, and saw the client > opening a file, writing 272 bytes into it (one write), and then closing > it, with the server replying full success all the time. printk()'s in > knfsd and the vfs's generic_write() also reported that 272 bytes had > been successfully written. Yet the file was truncated. > > We switched from soft to hard mount: It didn't help. We are now > experimenting with disabling SCSI's disconnect/reconnect feature. Are > there any more straws to grasp at? With one single knfsd thread running, the problem went away (for a price in performance). This seems to indicate there is some kind of race between the knfsd threads. /Sverker - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ _______________________________________________________________ Hundreds of nodes, one monster rendering program. Now that?s a super model! Visit http://clustering.foundries.sf.net/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs