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 08FB9182BD; Tue, 13 May 2025 05:55:49 +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=1747115751; cv=none; b=d9qfxZMj9NUSSEdJu0b0oyG9HhNbUUEk3iYhm2k63dNfehG86yvaw6n1VXCAyPrhE5NBin9OT9V1I4G0v9Kw+NRL2bT9f2jaXpbwI1otK7rt3wPJwYRVozX2qM+KLsl3TWsFCJUpvADMO+3D3pUHPfpTwIfIZ8c0S5UpSatc1pM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747115751; c=relaxed/simple; bh=RP49QrYotC4wtmWmzueEFIgQ7wUF7SzcF1AY4iJX48U=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cBeopGT6bMj2ZXDQgcJpPmoi+qX5IH9MhGPCguH8whrDS/UU6Eg2CbcQbjNmGDoulrjtql9MYH+7Mj6AFRJJBDrcwrIBkZ+qGJ5oTQoKs1RgzngxRITAC0nN5kuQHXgIFiwBm5kh25kWnj5XHcEcGTPuRCBFUx8ZTiJLZ44u0BQ= 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=dwsDLsD1; 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="dwsDLsD1" 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=RP49QrYotC4wtmWmzueEFIgQ7wUF7SzcF1AY4iJX48U=; b=dwsDLsD18ZbLnYnRawGnxEDOop yV3OyEngKbIJX9nuFRf8EJsTwRNMFhDlR77nzjuKHLDW3rA3BFHPpsrZpCh6LB8MtIIf47PVpNHJy 1RpYEfmu/Rfg6sXPYgo8sFwiGbZMuipR8JigjNG9UD8l2x+WvB0/m1es7gL7q2RyKFdUw97cVALII //xn3RdI+TUIpRC1JLogKwS13XeJ22QHzmJ0HuSDkBnQrmMxHntxqcSIr2XoZ6aQCJIHUnmQUeaQ8 DnoTANN6y9uJmHROXNXF0mBubY9PJnyxkjtLQiLWeLxEkswc01Yp34WOS2ePRH6D7AUp83+92cO9q 0aWriOcQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uEicH-0000000BRo0-14pW; Tue, 13 May 2025 05:55:49 +0000 Date: Mon, 12 May 2025 22:55:49 -0700 From: Christoph Hellwig To: Kevin Wolf Cc: Martin Wilck , dm-devel@lists.linux.dev, hreitz@redhat.com, mpatocka@redhat.com, snitzer@kernel.org, bmarzins@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] dm mpath: Interface for explicit probing of active paths Message-ID: References: <20250429165018.112999-1-kwolf@redhat.com> <47dd225b433b0df585a25084a2e793344eeda239.camel@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@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: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Mon, May 12, 2025 at 05:18:43PM +0200, Kevin Wolf wrote: > Yes, it's a bit unfortunate, but we have to work with what we have. QEMU > doesn't even necessarily know that it's dealing with a multipath device, > so it just has to blindly try the ioctl and see if it works. Why is qemu even using SG_IO to start with?