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* [Ocfs2-devel] [PATCH v2] ocfs2: return -EROFS to mount.ocfs2 if inode block is invalid
@ 2017-12-26 11:09 piaojun
  2017-12-26 11:18 ` Changwei Ge
  2017-12-26 11:31 ` Joseph Qi
  0 siblings, 2 replies; 6+ messages in thread
From: piaojun @ 2017-12-26 11:09 UTC (permalink / raw)
  To: ocfs2-devel

If metadata is corrupted such as 'invalid inode block', we will get
failed by calling 'mount()' and then set filesystem readonly as below:

ocfs2_mount
  ocfs2_initialize_super
    ocfs2_init_global_system_inodes
      ocfs2_iget
        ocfs2_read_locked_inode
          ocfs2_validate_inode_block
            ocfs2_error
              ocfs2_handle_error
                ocfs2_set_ro_flag(osb, 0);  // set readonly

In this situation we need return -EROFS to 'mount.ocfs2', so that user
can fix it by fsck and mount again rather than doing meaningless retry.
In addition, 'mount.ocfs2' should be updated correspondingly as it only
return 1 for all errno. And I will post a patch for 'mount.ocfs2' too.

Signed-off-by: Jun Piao <piaojun@huawei.com>
Reviewed-by: Alex Chen <alex.chen@huawei.com>
---
 fs/ocfs2/super.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 040bbb6..f46f6a6 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -474,7 +474,7 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
 		new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
 		if (!new) {
 			ocfs2_release_system_inodes(osb);
-			status = -EINVAL;
+			status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
 			mlog_errno(status);
 			/* FIXME: Should ERROR_RO_FS */
 			mlog(ML_ERROR, "Unable to load system inode %d, "
@@ -505,7 +505,7 @@ static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
 		new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
 		if (!new) {
 			ocfs2_release_system_inodes(osb);
-			status = -EINVAL;
+			status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL;
 			mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
 			     status, i, osb->slot_num);
 			goto bail;
-- 

^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2017-12-27  1:59 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-12-26 11:09 [Ocfs2-devel] [PATCH v2] ocfs2: return -EROFS to mount.ocfs2 if inode block is invalid piaojun
2017-12-26 11:18 ` Changwei Ge
2017-12-26 11:22   ` piaojun
2017-12-26 11:27     ` Changwei Ge
2017-12-26 11:31 ` Joseph Qi
2017-12-27  1:59   ` Gang He

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