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 6473BFBE8 for ; Sat, 23 Dec 2023 15:47:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JZXZbu5g" Received: by smtp.kernel.org (Postfix) with ESMTPS id D3A04C433CB for ; Sat, 23 Dec 2023 15:47:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1703346433; bh=3Pmd7Ee63xZL/mxxaFdP8/vzewqxhss/D8biYjc57O0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=JZXZbu5gAFU/d97ZUFIjLEyu8Ob+ihZqZR8Obc8s9MH74BbbUAeiV4ohA5zyBHV1D TtKdrLRdiGz/1jsIeLxAQQy9ANoMdQa+UMxBW4oBB2HiL0ZrwXjMIgCMVqMX6rtp74 +WYglJcpymU0CnC8klW7yLMTPWUV6sF4l4fZxEdQO7Th7ulEXGnI+qy+INyfPlcQkB 2cbVsnl2FYV//RcU8/5b5ua8dTPFBJi/99vcSf8BL02TsuS5+6Bt3ZHLydTC0yz8zJ IDtrRr1cGgGxqndBdO55259HVUBu7f6wesIWWUILWUlYla08P5E0+pq35zjH/WlTeD DwHUnACXhJd+Q== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id BB83DC53BD4; Sat, 23 Dec 2023 15:47:13 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 217965] ext4(?) regression since 6.5.0 on sata hdd Date: Sat, 23 Dec 2023 15:47:13 +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: carlos@fisica.ufpr.br 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: 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=3D217965 --- Comment #51 from carlos@fisica.ufpr.br --- bugzilla-daemon@kernel.org (bugzilla-daemon@kernel.org) wrote on Fri, Dec 2= 2, 2023 at 10:48:39PM -03: > https://bugzilla.kernel.org/show_bug.cgi?id=3D217965 >=20 > Andreas Dilger (adilger.kernelbugzilla@dilger.ca) changed: >=20 > What |Removed |Added > -------------------------------------------------------------------------= --- > CC| |adilger.kernelbugzilla@d= ilg > | |er.ca >=20 > --- Comment #48 from Andreas Dilger (adilger.kernelbugzilla@dilger.ca) --- > Independent of the fixes to the mballoc code to improve the allocation > performance, I'm wondering about the ''RAID stride'' values in use here. > The "stride" value is intended to be the size of one complete set of > disks (e.g. 128KiB chunk size * 8 data disks =3D 1MiB). The filesystem > doesn't see the parity disks, so the number of those disks does not > matter to ext4.=20 >=20 > It seems in all these cases that the stripe/stride is strange. I can't > see any value to setting stride to (almost) 128MB, especially not on a > RAID-1 system. Were these values automatically generated by mke2fs, > or entered manually? If manually, why was that value chosen? If there > is something unclear in the documentation it should be fixed, and the > same if there is something wrong in mke2fs detection of the geometry. >=20 > > By default the FS is mounted with stripe=3D1280 because it's on a r= aid6. > > Remounting with stripe=3D0 works around the problem. Excellent! >=20 > Carlos, how many data disks in this system? Do you have 5x 256KiB or > 10x 128KiB *data* disks, plus 2 *parity* disks? There are 10 data disks. The stride, determined automatically by mke2fs, is correct since the chunk is 512KiB. --=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.=