From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Kwolek Subject: [PATCH 7/9] FIX: Array cannot be opened for writing on restart Date: Wed, 09 Mar 2011 14:46:26 +0100 Message-ID: <20110309134626.8939.62466.stgit@gklab-128-013.igk.intel.com> References: <20110309134019.8939.15438.stgit@gklab-128-013.igk.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110309134019.8939.15438.stgit@gklab-128-013.igk.intel.com> Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de Cc: linux-raid@vger.kernel.org, dan.j.williams@intel.com, ed.ciechanowski@intel.com, wojciech.neubauer@intel.com List-Id: linux-raid.ids When reshape is restarted array (in readonly state) cannot be opened for writing. For reshape restart open array for reading only. Array is configured already and no writes are required. Signed-off-by: Adam Kwolek --- Grow.c | 12 +++++++++++- 1 files changed, 11 insertions(+), 1 deletions(-) diff --git a/Grow.c b/Grow.c index 67bbb26..e392290 100644 --- a/Grow.c +++ b/Grow.c @@ -2240,7 +2240,17 @@ int reshape_container(char *container, char *devname, if (!content) break; - fd = open_dev(mdstat->devnum); + if (restart) { + char buf[20]; + /* array is in readonly state, + * so cannot be opened for writting + */ + sprintf(buf, "%d:%d", + dev2major(mdstat->devnum), + dev2minor(mdstat->devnum)); + fd = dev_open(buf, O_RDONLY); + } else + fd = open_dev(mdstat->devnum); if (fd < 0) break; adev = map_dev(dev2major(mdstat->devnum),