From owner-freebsd-questions Thu May 20 17:14: 4 1999 Delivered-To: freebsd-questions@freebsd.org Received: from xena.cs.waikato.ac.nz (xena.cs.waikato.ac.nz [130.217.241.20]) by hub.freebsd.org (Postfix) with ESMTP id A7FDC14DDF for ; Thu, 20 May 1999 17:13:59 -0700 (PDT) (envelope-from joerg@lucy.cs.waikato.ac.nz) Received: from lucy.cs.waikato.ac.nz (joerg@lucy.cs.waikato.ac.nz [130.217.241.12]) by xena.cs.waikato.ac.nz (8.9.3/8.9.3) with ESMTP id MAA20895; Fri, 21 May 1999 12:13:57 +1200 (NZST) Received: (from joerg@localhost) by lucy.cs.waikato.ac.nz (8.9.3/8.9.0) id MAA13680; Fri, 21 May 1999 12:13:55 +1200 (NZST) Date: Fri, 21 May 1999 12:13:54 +1200 From: Joerg Micheel To: questions@freebsd.org Cc: joerg@cs.waikato.ac.nz Subject: "Prestoserve" for FreeBSD (NFS server write cache) Message-ID: <19990521121354.D11539@cs.waikato.ac.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Organization: SCMS, The University of Waikato, Hamilton, New Zealand Project: WAND - Waikato Applied Network Dynamics, DAG Operating-System: ... drained by Solaris 7 SPARC Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi there, I'm planning to run FreeBSD as a lab file server. I'm aware of the NFS server write delay problem, which slows down writes from the client. I know about the "insecure option" on the client, which I dont intend to use. On Sun Servers you can add a small battery-backed memory to the system where NFS writes end up in first, before being written to disk. This looks like an elegant solution at a first glance, however, the size of memory is fairly limited. I have been studying FreeBSD sources to find a hint for a similiar solution, but it doesn't seem to be there. There are no hooks. Does anyone know of a prestoserve implementation for FreeBSD machines, as a PCI board, perhaps ? If not, what solutions do people use to speed up NFS writes ? Do you guys run your NFS file server in "insecure" mode and have a UPS for the case of a power failure ? What about system crashes ? Thanks for enlightening me. Regards, Joerg -- Joerg B. Micheel Email: Waikato Applied Network Dynamics Phone: +64 7 8384794 The University of Waikato, SCMS Fax: +64 7 8384155 Private Bag 3105 Pager: +64 868 38222 Hamilton, New Zealand Plan: TINE and the DAG's To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message