From: Benny Halevy Subject: Re: [pnfs] [PATCH 0/14] NFSv4.1 Server DRC rewrite Version 4 Date: Sun, 28 Jun 2009 19:01:04 +0300 Message-ID: <4A4793C0.5040903@panasas.com> References: <> <1245872278-18743-1-git-send-email-andros@netapp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: bfields@citi.umich.edu, linux-nfs@vger.kernel.org, pnfs@linux-nfs.org To: andros@netapp.com Return-path: Received: from ip67-152-220-66.z220-152-67.customer.algx.net ([67.152.220.66]:6680 "EHLO daytona.int.panasas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753401AbZF1QBD (ORCPT ); Sun, 28 Jun 2009 12:01:03 -0400 In-Reply-To: <1245872278-18743-1-git-send-email-andros@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Andy, I've merged this patchset onto the nfsd41 branch which is now based on 2.6.31-rc1, replacing the respective patches you sent previously. Benny On Jun. 24, 2009, 22:37 +0300, andros@netapp.com wrote: > NFSv4.1 Server DRC rewrite Version 4 > > This patch set applies to linux-nfs.org/~bfields/linux, for-2.6.31 branch > updated on 6-22-2009. > > In response to bfield's comments I moved the DRC limit bug fixes to the front > of the series, consolidated patches replacing the single slot clientid DRC > into one patch and the replacement of the mulitple slot sequeqnce operation > DRC into another single patch. > > The NFSv4.1 DRC is changed from a page based cache to > a buffer based cache. The logic for the single slot clientid cache has been > separated from the session slot logic to handle the CREATE_SESSION call > preceeded by a SEQUENCE and all the replay combinations therein. > > The session DRC now caches encoded operations with the exception of the > SEQUENCE operation which for a replay is encoded with the current slot and > session values. A review of message sizes indicates that a 512 byte buffer > for the operations is adequate. > > Not addressed is replacing the nfsd4_check_drc_limit() post-operation checking > with a pre-operation processing estimate of the encoded per operation result > > Testing: > 4.1 mount: Connectathon and 4.1pynfs including the new create session replay > tests. > 4.0 mount; Connectathon. > > 0001-nfsd41-use-globals-for-DRC-limits.patch > 0002-nfsd41-change-from-page-to-memory-based-drc-limits.patch > 0003-nfsd41-reclaim-DRC-memory-on-session-free.patch > 0004-nfsd41-set-the-session-maximum-response-size-cached.patch > 0005-nfsd41-remove-redundant-forechannel-max-requests-ch.patch > 0006-nfsd41-change-check_slot_seqid-parameters.patch > 0007-nfsd41-replace-create_session-DRC-with-xdr-structur.patch > 0008-nfsd41-replace-page-based-DRC-with-buffer-based-DRC.patch > 0009-nfsd41-rename-nfsd4_enc_uncached_replay.patch > 0010-nfsd41-encode-replay-sequence-from-the-slot-values.patch > 0011-nfsd41-fix-nfsd4_replay_cache_entry-comments.patch > 0012-nfsd41-support-16-slots-per-session.patch > 0013-nfsd41-add-test-for-failed-sequence-operation.patch > 0014-nfsd41-remove-redundant-failed-sequence-check.patch > > Comments welcome. > > -->Andy > > _______________________________________________ > pNFS mailing list > pNFS@linux-nfs.org > http://linux-nfs.org/cgi-bin/mailman/listinfo/pnfs