From: SMTP%"dave@silcom.com" 11-OCT-1997 10:59:32.93 To: ntfsd@atria.com CC: Subj: Re: Can I disable the Cache Manager? Return-Path: owner-ntfsd@atria.com Received: by arisia.gce.com (UCX V4.1-12C, OpenVMS V7.1 VAX); Sat, 11 Oct 1997 10:38:41 -0400 Received: from gw.atria.com (gw.atria.com [192.88.237.2]) by bort.mv.net (8.8.5/mem-951016) with SMTP id WAA01229 for ; Wed, 8 Oct 1997 22:07:59 -0400 (EDT) Received: by gw.atria.com id Wed, 8 Oct 1997 19:30:34 -0400 Received: from acme.sb.west.net by gw.atria.com id Wed, 8 Oct 1997 19:30:26 -0400 Received: from division_bell (host3.miramarsys.com [205.180.87.4]) by acme.sb.west.net (8.8.3/8.6.12) with ESMTP id QAA18305 for ; Wed, 8 Oct 1997 16:30:23 -0700 (PDT) Message-ID: <343C1703.6151C760@silcom.com> Date: Wed, 08 Oct 1997 16:28:03 -0700 From: Dave Cox Reply-To: dave@silcom.com X-Mailer: Mozilla 4.01 [en] (WinNT; I) MIME-Version: 1.0 To: ntfsd@atria.com Subject: Re: Can I disable the Cache Manager? X-Priority: 3 (Normal) References: <343bafd2.74827@news.iaehv.nl> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-ntfsd@atria.com Precedence: bulk FO_CACHE_SUPPORTED: in your filter, clear this bit in the file object after the FSD completes the CREATE dispatch (since it may set the bit in the dispatch). However, it seems this isn't sufficient to get the IO Manager to set the IRP_NOCACHE bit on i/o IRPs, so you may have to set it yourself in the IRP flags for each READ and WRITE IRP before passing them to the FSD. Dave Cox Miramar Systems, Inc. Mark van Velsen wrote: > > Hi there! > > Is there anyone who can give me a hint how I can prevent that the > Cache Manager gets involved when I am performing operations on > specific files? In a project I am currently working on, I want to > expand data that is going to my filesystem using a file filter driver. > To prevent strange situations during the first stage of the project > (lateron I do need the Cache Manager of course) I want to disable the > Cache Manager for specific files. I know the IRP_NOCACHE flag in the > IRP and the FO_CACHE_SUPPORTED flag in the FileObject, but playing > with them didn't bring me any further. Anyone any ideas? > > Thanks in advance, > > Mark. > > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > [ To unsubscribe, send email to ntfsd-request@atria.com with body > UNSUBSCRIBE (the subject is ignored). ] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - [ To unsubscribe, send email to ntfsd-request@atria.com with body UNSUBSCRIBE (the subject is ignored). ]