From mboxrd@z Thu Jan 1 00:00:00 1970 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 smtp.subspace.kernel.org (Postfix) with ESMTPS id 61D3E13A3F7; Wed, 27 Mar 2024 16:59:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711558758; cv=none; b=pnvPHGVQN5T42FoDZeEpxL8g7UhGjWJrfvYGwzesPLwVHlJ99SGIg3dyG2Iw82qhn3N8hCC85PKDFyKT6ylYeY2GJNYZjJt1+EvYMMlY2/mv1Nk31BDEOEeGJOf/wpaj3zXA2JICpcK4rQT/VJg01FvHK4WKDNQqIF/qwHEkRzY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711558758; c=relaxed/simple; bh=ajm5OQI0eRDnM1c9YdwiR+ZNtPG3FggbkX8BzzzSehE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=uMFM16v6FVE4oq3EUBXSyLVLOR7yMZ+wPkVJnpyzMKlPVpR05pleYYEDe7RpwOq0ZDfFCNPGiIBHNW4zQqB8hufDcVKqvwjGLZdI9F5c7l1RBInBw9AMro5Pky68KCd2fCrp09T5/DznmsR/3PNR8Blgg+DMnRmbcdqrk6MuBPM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=ZZUppb7e; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ZZUppb7e" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=SKk0i2OTam2me4BcDSIDIjfRC5F9vU9QGRHsjHGlJug=; b=ZZUppb7eqTzB8lbBAopa03Re2y PIMj5JdPw1GAqyCg5BUK94NHj3IzceR+4B2Jq2pAX98mnpz9Qd1asPa7Yde8pGcfhlzXvcAIF7Dbj TB6mrTZtkVdyN1ECKaCC0UrfAzC6KHyMTR+gEDw2b+0zYIqk25EmAiRLIYWOOON1LRq5BtG+EIaRD 9tYabUwRHc7WK5RWw7bRJBtWakZN8QDBjqiCXeyGzHcOXIA2l4tW5RnCboDgaaqEU6+qEE+zkT76o OBHFkU3ldeH/lNYvqPJyKIpH8p4ltixvmJ4heu98VQ43u9Uq+ehWDCCHDTmVD1oBbZyPYZEHzjvdd AyXWN5ag==; Received: from hch by bombadil.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpWcL-0000000ABJT-3qPB; Wed, 27 Mar 2024 16:59:13 +0000 Date: Wed, 27 Mar 2024 09:59:13 -0700 From: Christoph Hellwig To: "Darrick J. Wong" Cc: zlang@redhat.com, fstests@vger.kernel.org, linux-xfs@vger.kernel.org, guan@eryu.me Subject: Re: [PATCH 3/4] generic/{166,167,333,334,671}: actually fill the filesystem with snapshots Message-ID: References: <171150739778.3286541.16038231600708193472.stgit@frogsfrogsfrogs> <171150741593.3286541.18115194618541313905.stgit@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <171150741593.3286541.18115194618541313905.stgit@frogsfrogsfrogs> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Mar 26, 2024 at 07:43:35PM -0700, Darrick J. Wong wrote: > From: Darrick J. Wong > > XFS has this behavior in its reflink implementation where it returns > ENOSPC if one of the AGs that would be involved in the sharing operation > becomes more than 90% full. As Kent Overstreet points out, that means > the snapshot creator shuts down when the filesystem is only about a > third full. We could exercise the system harder by not *forcing* > reflink, which will actually fill the filesystem full. All these tests are supposed to test the reflink code, how does using cp --reflink=auto make sense for that?