From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6FC06C4360C for ; Fri, 27 Sep 2019 22:51:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 40B812082F for ; Fri, 27 Sep 2019 22:51:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hGFrjGQR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 40B812082F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=FBo+j3/GGPAz1P5TdMItpp6lOyuhM5NfKaG5w5A/kG8=; b=hGFrjGQRV+ownW uoJoKeqnFCpTY/aWIW2Sm7CWgzjuMtvi0zavj70xWRNwfgUTndJkrCEai7EgHjQJkHEaGFgaJxsUM VIMWmjqri5Ee4tTOlsUNU0LMqT62Chb+ETTTi6ncj3tWn0WUNjTeEJN+rlZBeI8pAW3XOkXlv7Nru QMJ3y0SH1wCYh1fItTygirLPfQH+jzIqlIB18HdmE7dJf+MXiHtN52U2O9Yx4y65bFYPuK9TWSE+5 4sp2jQFl3vMUM7N5/tZgp7QVv7Z7mmMSE4mmIKaeCa/QbTTGp1QZ9PNxxsj29Q5jcvtDwjjz9RKa0 yXjvMIvKptAFzJlXEzOQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDz4w-0004k3-EU; Fri, 27 Sep 2019 22:51:10 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDz4t-0004jN-Af for linux-nvme@lists.infradead.org; Fri, 27 Sep 2019 22:51:08 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 1149468B05; Sat, 28 Sep 2019 00:51:03 +0200 (CEST) Date: Sat, 28 Sep 2019 00:51:02 +0200 From: Christoph Hellwig To: Sagi Grimberg Subject: Re: [PATCH] nvmet: add revalidate ns sysfs attribute to handle device resize Message-ID: <20190927225102.GA18434@lst.de> References: <20190926231940.7494-1-m.malygin@yadro.com> <80c2509b-bd48-c3c4-13bf-8ad6b1c0f77a@grimberg.me> <20190927221352.GA17568@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190927_155107_516874_972AA340 X-CRM114-Status: UNSURE ( 8.73 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Christoph Hellwig , linux-nvme@lists.infradead.org, Mikhail Malygin Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Fri, Sep 27, 2019 at 03:34:24PM -0700, Sagi Grimberg wrote: >> Well, even if there was a udev rule we can't directly rely on it. > > What do you mean we can't rely on it? > > I do understand that we'd have no triggers for file-backed namespaces. Do we have any generic way supported by all block device drivers to notify resizes? For files we could at least use dnotify/inotify/fsnotify/ etc in userspace. _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme