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Date: Sun, 14 Oct 2001 17:50:22 -0400 (EDT)
From: Alexander Viro <viro@math.psu.edu>
To: Andreas Gietl <a.gietl@e-admin.de>
cc: linux-kernel@vger.kernel.org, =?iso-8859-1?q?Kr=E4mer?= <kraemer@crasu.de>,
        =?iso-8859-1?q?K=FChne?= <kuehne@power-netz.de>
Subject: Re: fs mounted twice, writing to wrong partition with 3ware escalade
 ide-raid
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On Sun, 14 Oct 2001, Andreas Gietl wrote:

> a strace on the mount command shows that the syscall mount is executed w/o 
> error.
> 
> mount("/dev/sda5", "/mnt/", "ext2", 0xc0ed0000, 0) = 0  
> 
> As far as i know it should return EBUSY on a fs that is already mounted.

No, it shouldn't.  HOWEVER, trees should be in sync (actually, there's
only one tree and only one superblock).

> Second mystery:
> 
> the mounted /dev/hda3 contains the same data as /dev/sda5 and changes to one 
> of them affect both partitions.

Please, post your /proc/mounts.  Results of ls -l /dev/hda3 /dev/sda5
would also be very interesting.

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