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 45600802 for ; Thu, 5 Sep 2024 01:04:58 +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=1725498299; cv=none; b=jRV28T7gMnptaOrTRxDXBlnzY+yqrU19LU8hV3uqk+kfYtjZyiSzjs0GARypzhRGUO0pigD2JX2RNixzPav33jG3VPeh44p6QVIKsHaJ8c97xLBtqxXf3SfrVwZAc7Y1YxsGmHTUPCHGC8IgNaAvtTp7gLQOx3RC2+Qb4Zjd8Q8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725498299; c=relaxed/simple; bh=Nwnt1wSi6q6iwMn9WXvmawW+/WIlQp8a3/eO8fpr/wA=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=TJdZgXs2vcX5XIIbHMf9BT2CXbOLCAagNGxEvv73MVt+1YeUGR8OkmB4v2wf1l5EcDVNPYzOmBxn/qK3wij/wxrWYUCt/g6H4DXQUhXgygRzJ+5itL0L8iW/qa6Nv6K8YNW4wpAFo8TRKyEQnSMBLTZ5+byIjbfEBFSFquSJ4fk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=djXAK0ku; 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="djXAK0ku" Received: by smtp.kernel.org (Postfix) with ESMTPS id BAEA1C4CEC2 for ; Thu, 5 Sep 2024 01:04:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725498298; bh=Nwnt1wSi6q6iwMn9WXvmawW+/WIlQp8a3/eO8fpr/wA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=djXAK0kuVmAYmlxSLMi8Jf020USgeYrZZvfaQvFpdK613EsrTUxS8f63rBqoC1K+2 dQW78ENnyapVDmP2dBqQVcI6nkRzjJwXC2sr/jHqUa7RD6odaKnDd/MxJLkPL3+AIz zdmbULBWIGDHKUISBf0aNsn+z1MtvSn8nohj7NKMMUpV8RbFK/vxZQs1d4au97SXxG bximLjoFFzk1hqrBRuYAqVy1EL3/RjLe/xIkL5rnW8sorYg39Gv+Wsmv3MrIXh21Ep zKXHYfHGH7ytynKdG1H62LpJYjt35A+d6ovf9smXet2u2W3qWvZnh9pJE0fuCOf2iN iGRd5rt+wSCfQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id B132CC53BC2; Thu, 5 Sep 2024 01:04:58 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 219166] occasional block layer hang when setting 'echo noop > /sys/block/sda/queue/scheduler' Date: Thu, 05 Sep 2024 01:04:58 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: tom.leiming@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D219166 Lei Ming (tom.leiming@gmail.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tom.leiming@gmail.com --- Comment #11 from Lei Ming (tom.leiming@gmail.com) --- Hi Richard, Can you collect the blk-mq debugfs log for this virtio-blk devices? (cd /sys/kernel/debug/block/vda && find . -type f -exec grep -aH . {} \;) There is known io hang risk in case of MQ: https://lore.kernel.org/linux-block/20240903081653.65613-1-songmuchun@byted= ance.com/T/#m0212e28431d08e00a3de132ec40b2b907bb07177 If you or anyone can reproduce the issue, please test the above patches. Thanks, --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=