From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from plane.gmane.org ([80.91.229.3]:57834 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753769Ab3LaRCW (ORCPT ); Tue, 31 Dec 2013 12:02:22 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Vy2hw-0005eE-K1 for linux-btrfs@vger.kernel.org; Tue, 31 Dec 2013 18:02:20 +0100 Received: from c-24-17-202-252.hsd1.wa.comcast.net ([24.17.202.252]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 31 Dec 2013 18:02:20 +0100 Received: from eternaleye by c-24-17-202-252.hsd1.wa.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 31 Dec 2013 18:02:20 +0100 To: linux-btrfs@vger.kernel.org From: Alex Elsayed Subject: Re: question regarding caching Date: Tue, 31 Dec 2013 09:02:09 -0800 Message-ID: References: <6fp9pa-9un.ln1@hurikhan77.spdns.de> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Sender: linux-btrfs-owner@vger.kernel.org List-ID: Kai Krakow wrote: > Aastha Mehta schrieb: > >> Rather than a local disk, I have a remote device to which my IO >> requests are sent and from which the data is fetched. I need certain >> data to be fetched from the remote device after a remount. But somehow >> I do not see any request appearing at the device. I even tried to do >> drop_caches after remounting the file system, but that does not seem >> to help. > > Maybe you or your distribution deployed cachefilesd and uses it for the > remote fs? The FS-Cache infrastructure only applies to filesystems which opt in to using it (NFS, recent work on Ceph, etc), so mounting btrfs over a remote block device wouldn't use it at all.