From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Wesley W. Terpstra" Subject: bcache read-only mode? Date: Sat, 24 Jan 2015 23:55:41 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from mail-yh0-f43.google.com ([209.85.213.43]:61116 "EHLO mail-yh0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751947AbbAXWzm (ORCPT ); Sat, 24 Jan 2015 17:55:42 -0500 Received: by mail-yh0-f43.google.com with SMTP id 29so1175944yhl.2 for ; Sat, 24 Jan 2015 14:55:41 -0800 (PST) Sender: linux-bcache-owner@vger.kernel.org List-Id: linux-bcache@vger.kernel.org To: linux-bcache@vger.kernel.org Good evening! I've been using bcache happily for some months now, but unfortunately, something bad happened to the backing device in my bcache setup. To confirm that I've corrected the problem, I would like to run bcache in read-only mode. Is this possible? My bcache was in writeback mode, so part of the filesystem information is in the cache drive. Thus, I can't filesystem check the backing disk without involving the cache. I want to prevent bcache from making any changes to the cache and backing drives. I just want to be able to include the writeback information so that I can see if the data is consistent. Thanks!