From: Artem Bityutskiy Subject: Re: ext4 settings in an embedded system Date: Mon, 19 Nov 2012 12:43:56 +0200 Message-ID: <1353321836.20111.36.camel@sauron.fi.intel.com> References: <1352968933.2221.16.camel@sauron.fi.intel.com> <50A65F64.3020603@redhat.com> Reply-To: dedekind1@gmail.com Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-BBYA6kEhmNPkW4kGtc5c" Cc: "Ohlsson, Fredrik (GE Healthcare, consultant)" , linux-ext4@vger.kernel.org To: Eric Sandeen Return-path: Received: from mga02.intel.com ([134.134.136.20]:8404 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751821Ab2KSKnM (ORCPT ); Mon, 19 Nov 2012 05:43:12 -0500 In-Reply-To: <50A65F64.3020603@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: --=-BBYA6kEhmNPkW4kGtc5c Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2012-11-16 at 09:44 -0600, Eric Sandeen wrote: > > I do not know for sure, but I doubt there is serious power-cut testing > > regularly conducted for ext4, but people may correct me. >=20 > We do it here, though maybe not as regularly as we should. > I also periodically test journal replay, but not in a way that simulates > lost write caches or misbehaving hardware. OTOH, those things are out > of our control in the real world (if users disable barriers, or if the > hardware lies to us). Good to know, thanks. I actually now recall Josef mentioned that RedHad does some power-cut testing. > But you absolutely should test YOUR system, audit YOUR software, and > YOUR configuration to be sure that it is behaving as you require. Sure. --=20 Best Regards, Artem Bityutskiy --=-BBYA6kEhmNPkW4kGtc5c Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJQqg1sAAoJECmIfjd9wqK0RZEP/Rt84DDk5qEbhsEyFR1ljOiU 8JRVS9M4yaOHJs28dLbRgiY1zy1kpmf4P82oUf/pHUIcQ/LEUhdBvZxRWHh4WrgG uH9f5rVW2JtPIjl1AEOp95s8GL/gl+ZRrYDEVxPaapUeo6/RXe5ioOghhbtQxhkS c7w7s+8Q/y3VlKao8Hdwsds6lEziz1shl86XDnLwUblpRc5/gwlwxUSrOJfyp9xy fgTueKHFZ5UmOtyL2Qog6y6L4eZY86Bw5rj3a2qF7X8YbFVSW7dNYCyA9eFemJ1W 3+vkLnXu/SpykSpNOg7X2xuQAeve9KiWfWgydC+DQwtFvJQpxukw62OfDEEDQCsy Q3hMD0ircW41UcVIwAjSIoMmVlqCV4F1KqU5R3qYllh1ufejXCmTb3gybXz0CDkD 1HOuCiqEBN9BhQVbE+nBtffOYN3KGORFdMQ86Vs/IePYdM4UjIjX+WrxE0hWPHqz 3TBwkc592cZRjEBHQ+85DWKgpliJTcIyy/Qv/yO0e6wPQwAUK0X8Fl3/px1D6ypG Xg7eAJTxa9KQpo7Y1XK4+QSTnWjfba8X8DF0uuHI3R5DeHjrKfXAXgNKOcPMYaw8 jLthhs1GRtSvb2hkwFIk+AzCrWDT8vOFjrXev+jqip2Y+lHibZGdGHf3/F7lDrUj cateXVHOqkCTrQMc1vRF =44VC -----END PGP SIGNATURE----- --=-BBYA6kEhmNPkW4kGtc5c--