linux-ext4 - [Bug 16227] New: Mount command sees partition 2 and partition 7 as same partition

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Date:	Wed, 16 Jun 2010 16:29:06 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 16227] New: Mount command sees partition 2 and partition 7 as
 same partition

https://bugzilla.kernel.org/show_bug.cgi?id=16227

               URL: http://bugs.centos.org/view.php?id=3601
           Summary: Mount command sees partition 2 and partition 7 as same
                    partition
           Product: File System
           Version: 2.5
    Kernel Version: 2.6.18-164.6.1.el5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext3
        AssignedTo: fs_ext3@...nel-bugs.osdl.org
        ReportedBy: eugene.blanchard@...t.ca
        Regression: No

When mounting multiple partitions, partition 7 sees partition 2 instead of
partition 7. Partition scheme is as follows:

/dev/hda1 /boot
/dev/hda2 /
/dev/hda3 swap
/dev/hda4 extended partition
/dev/hda5 / (copy of /dev/hda2)
/dev/hda6 / (copy of /dev/hda2)
/dev/hda7 / (copy of /dev/hda2)

After copying /dev/hda2 to each partition using Gparted, I boot to /dev/hda2
and mount /dev/hda5, /dev/hda6 and /dev/hda7 to /mnt/p5, /mnt/p6, /mnt/p7
respectively. /mnt/p5 and /mnt/p6 work as expected.

Here's the problem: /mnt/p7 - any modifications to it's files, modifies
/dev/hda2 partition's files and vice versa. 

I have reproduced this across several different machines: HP DL360s, PCs, etc..
using PATA, SATA and SCSI drives. 

If I only mount p7, then partition p7 works as expected. This bug is originally
documented in the CentOS bug tracker listed in the URL.

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