[ext2resize] current status of online resizing

[Glauber de O. C. <go...@br...>]

Hi all,

I'm starting to go trough the online resizing code for ext3, but I'm
having some troubles with it. It would be nice if someone could point me
the right direction. Maybe I'm doing something silly at all...

Let me by now just describe what I'm doing, and which results I'm getting.

I first tried the ext2online userspace tool, but got no success with it.
It returned me the error message bellow:

ext2online: ext2_open: fs has unsupported feature(s) enabled:ext2online:
can't open /home/glauber/teste

Since I'm using 2.6.13-rc6, in which the resizing patches should be
merged already, I can't guess which support it's about.

But that's okay, life goes on. I then tried doing it directly by passing
the resize=blocks parameter to mount (obviously, while remounting), and
found 2 main issues, that are:

1) the resize option was not even being parsed, and so I changed the
code in super.c to be like this:
        {Opt_resize, "resize=%u"},
				{Opt_err, NULL},

2) With that done, my mount process hung while trying to acquire a lock
in ext3_group_extend , at resize.c. Actually, this lock was already held
by do_remount_sb. 

Having all these sort of problems, I realized that I would maybe be
doing something very wrong. As I said earlier, any enlightenment may be
helpful. 

Thanks,

glauber
								
-- 
=====================================
Glauber de Oliveira Costa
IBM Linux Technology Center - Brazil
go...@br...
=====================================