[Ocfs2-tools-devel] [patch] Add test programs in ocfs2-test to verify removing slots. take 2

[tao.ma]

Add test script in ocfs2-test to test whether removing slot can work OK.

1. remove_slot.c
This file is used to create some boudary situation to test whether
tunefs.ocfs2 can work OK with removing slots.
When we have orphan files or have some blocks allocated in truncate log
or local alloc, we can't remove the slots, so the option 
CREATE_ORPHAN_FILE,
CREATE_TRUNCATE_LOG and CREATE_LOCAL_ALLOC are used to check it.

2. remove_slot.sh
The normal test script to test whether tunefs.ocfs2 can work OK.

3. corrupt_remove_slot.patch
With this patch, tunefs.ocfs2 will abort at the specified place and we 
can check
whether fsck.ocfs2 can fix the aborted problem.

4. corrupt_remove_slot.patch
The main test script to test whether fsck.ocfs2 can recover from the 
aborted tunefs.ocfs2.


tao.ma at oracle.com wrote:
> tunefs.ocfs2 has been able to increase the slot for a long time.
> Now the support for removing slots is also added. There are also some changes
> in debugfs.ocfs2 and fsck.ocfs2 to be fit for this new feature.
>
> Modification from v3 to v4:
>
> 1. Only check s_tunesfs_flag if FEATURE_INCOMPAT_TUNEFS is set in ocfs2_open.
> http://oss.oracle.com/pipermail/ocfs2-tools-devel/2007-June/000222.html
>
> 2. Modify the following places in the process of removing slots.
>    1) Remove relink_alloc_action enums and use existing
>       INODE_ALLOC_SYSTEM_INODE instead.
>    2) Limit the use of globals in the static functions.
>    3) Rename new_inode to dst_blkno as it is the blkno for dst_inode.
> http://oss.oracle.com/pipermail/ocfs2-tools-devel/2007-June/000224.html
>
> 3. Fix a bug when we remove the system file entry from the system directory.
>   
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