----- Original Message ----- 
From: "Neil Brown" <[EMAIL PROTECTED]>
To: "JaniD++" <[EMAIL PROTECTED]>
Cc: <linux-raid@vger.kernel.org>
Sent: Friday, February 03, 2006 1:09 AM
Subject: Re: raid 4, and bitmap.


> On Friday February 3, [EMAIL PROTECTED] wrote:
> > Hello, list, Neil,
> >
> > I try to add bitmaps to raid4, and mdadm is done this fine.
> > In the /proc/mdstat shows this, and it is really works well.
> >
> > But on reboot, the kernel drops the bitmap(, and resync the entire array
if
> > it is unclean). :(
> >
> > It is still uncomplete now? (2.6.16-rc1)
>
>
> It is an 'internal' bitmap, or is the bitmap in a file?

It is internal.
The external bitmap is not works for me, because on the boot, only the NFS
is reachable, and it cause crash.

(note: this is raid4 not raid5!)

>
> If the bitmap is in a file, you need to me sure that the file is
> provided by mdadm when the array is assembled - using in-kernel
> autodetect won't work.
>
> If it is an internal bitmap.... it should work.
> Are there any kernel messages during boot that might be interesting?

It is something, i will find it one minute! :-)

>
> NeilBrown

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