From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phillip Susi Subject: Battery backed ramdisk for fs journal Date: Mon, 04 Mar 2013 23:23:46 -0500 Message-ID: <51357352.70804@ubuntu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: linux-ext4@vger.kernel.org Return-path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120]:42026 "EHLO cdptpa-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758759Ab3CEEXs (ORCPT ); Mon, 4 Mar 2013 23:23:48 -0500 Sender: linux-ext4-owner@vger.kernel.org List-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 It seems to me that the ideal device to hold an external journal is a battery backed RAM based MTD device. Does such a beast exist? As an alternative, has anyone considered or implemented a more conventional ramdisk that would be preserved across a kexec crash, in conjunction with an oversized UPS and NUT configured to suspend the system with plenty of battery power left? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iQEcBAEBAgAGBQJRNXNSAAoJEJrBOlT6nu75oAAH/1KgYC4jOb78+Oe2DKA5vrAv Lnq/x5Y8RhNRKjFsBIGgqfQzWjxFw3emGccTiGysQh8cleBpyMSVGzKU1PDbnIbq vm0nxu05uhWsbqAcfVdO/BwuJHbckJ0HKOv+xKXg6YkGtmJm9S3RFX/tSbBquJpx DgDtMZLKN2oZCvuhLThYJGcNxlAS1oxfCEGPHaJXiNPfyO2ikU0suyPB9FbC8RNM gm/VwwS/FO7561HRUqUIjM46DKcpZnN8b2Hgtd3eCy3R3Vjaf988PWsM6Nz8GR86 KWXzNAci0LIz/5KaQeDj4unlXJ4jf4rhx3m9WR6vNU4HG3Pd+GuEN3xiNmznfa0= =HGFK -----END PGP SIGNATURE-----