From: Eric Sandeen Subject: [PATCH] tune2fs: allow removal of dirty journal with two "-f" options Date: Thu, 09 Jan 2014 14:08:11 -0600 Message-ID: <52CF01AB.7030704@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: james.faulkner@yale.edu To: ext4 development Return-path: Received: from mx1.redhat.com ([209.132.183.28]:4558 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932135AbaAIUIM (ORCPT ); Thu, 9 Jan 2014 15:08:12 -0500 Sender: linux-ext4-owner@vger.kernel.org List-ID: Jim pointed out that "tune2fs -f -O ^has_journal" won't remove the journal if the needs_recovery flag is set; the manpage seems to indicate that it should. And if you've lost an external journal and can no longer replay it, how should one proceed? Change tune2fs so that two "-f" options will allow removal of a dirty journal from a filesystem, even if the filesystem needs recovery. e2fsck can then do its best to pick up the pieces. Reported-by: Jim Faulkner Signed-off-by: Eric Sandeen --- diff --git a/misc/tune2fs.8.in b/misc/tune2fs.8.in index da21080..e07da28 100644 --- a/misc/tune2fs.8.in +++ b/misc/tune2fs.8.in @@ -248,7 +248,10 @@ option is useful when removing the filesystem feature from a filesystem which has an external journal (or is corrupted such that it appears to have an external journal), but that -external journal is not available. +external journal is not available. If the filesystem appears to require +journal replay, the +.B \-f +flag must be specified twice to proceed. .sp .B WARNING: Removing an external journal from a filesystem which was not cleanly unmounted diff --git a/misc/tune2fs.c b/misc/tune2fs.c index 0eddf6d..2318dbb 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -903,8 +903,9 @@ static int update_feature_set(ext2_filsys fs, char *features) "read-only.\n"), stderr); return 1; } - if (sb->s_feature_incompat & - EXT3_FEATURE_INCOMPAT_RECOVER) { + if ((sb->s_feature_incompat & + EXT3_FEATURE_INCOMPAT_RECOVER) && + f_flag < 2) { fputs(_("The needs_recovery flag is set. " "Please run e2fsck before clearing\n" "the has_journal flag.\n"), stderr); @@ -1428,7 +1429,7 @@ static void parse_tune2fs_options(int argc, char **argv) open_flag |= EXT2_FLAG_RW; break; case 'f': /* Force */ - f_flag = 1; + f_flag++; break; case 'g': resgid = strtoul(optarg, &tmp, 0);