From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B90A51B0F10 for ; Thu, 2 Jan 2025 15:38:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735832327; cv=none; b=UeJj8uIRl38jyY0fq+vDa6HkvJ2wCVa8n+nmSKozlyOMW3mSywCjMgLo1mTNY9QehkAGCvuxt8M4iIbSUBdADnLH6B1AL5y9lbOgXIdjuI/03/U2ap3RMwZr+U6EJuXQ+KdXVseQSPDd2JZkpENyqpw0jWJJwpZRswG9rLwZkag= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735832327; c=relaxed/simple; bh=TmS5hLZ4n1jWeiISNuGukRNotvFrdgAoUDCWKS4M3mk=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=KgPtknN7QSiQ78z7oG2ZC3nIRHw7qjBClsQfY8OLY9tl0v6v07fFrs3k6aHZppRWH0x9gLLxDgjMgUrwwrFSwSAvDa6Uh/PUDDXfDaMUOBRKmtXCkwuG6WYZ+EGeLHw8zII/X/Cxd/5XjWAqmSEuk1n0Aftq4nk/M0aUKheAHcw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=heQlcfGI; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="heQlcfGI" Received: by smtp.kernel.org (Postfix) with ESMTPS id 83192C4CED0 for ; Thu, 2 Jan 2025 15:38:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1735832327; bh=TmS5hLZ4n1jWeiISNuGukRNotvFrdgAoUDCWKS4M3mk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=heQlcfGIR4SMxi/+ndFxvXGM32z5QSgpZ9OgA5zEZzsP6pzyMzmvGn/Av+n20Nrjd oE/QM4+i7SpJrWZfRx9X4SSIhY4Mb5mTlZhg0baiGqGc2877UkMNl1hbW/sevFHp6A H8h3h6CM2cAuX6O204fpA3U60MJRFRyY064DDgxBTRlV3a0oaLPu2ta4WBNt1Svqv1 a4/K+IaH4W6yxonOlAsk3DD1B6aUn5MleCjAyJxAe+OFqF1hJucthkMcARQUsX6PvP zR3h0X3tbWh2wwABDB0l4obBFm555lc80M7CGVgEJSqKqGTlf3jJ0l1GFMY9sB767z uTgrmFWpAuwcQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 6E44AC4160E; Thu, 2 Jan 2025 15:38:47 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-scsi@vger.kernel.org Subject: [Bug 219652] READ CAPACITY(16) not used on large USB-attached drive in recent kernels Date: Thu, 02 Jan 2025 15:38:47 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: IO/Storage X-Bugzilla-Component: SCSI X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: stern@rowland.harvard.edu X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-scsi@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D219652 --- Comment #4 from Alan Stern (stern@rowland.harvard.edu) --- Your best bet is to instrument the new read_capacity_10() routine and its caller (sd_read_capacity()) with sd_printk() lines to find out exactly what= is going on. For instance, does sd_try_rc16_first() return true? And why does the "Very= big device. Trying to use READ CAPACITY(16)" line not get executed? --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=