partition gone !

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Hello,

I do not understand what did happen.
I have a logical partition whose the hierarchy seems to have disappeared.
Here is the result of testdisk:
Disk /dev/mapper/VG1-home - 9663 MB / 9216 MiB - CHS 18874368 1 1

The harddisk (9663 MB / 9216 MiB) seems too small! (< 9698 MB / 9249 MiB)
Check the harddisk size: HD jumpers settings, BIOS detection...

The following partitions can't be recovered:
     Partition               Start        End    Size in sectors
  Linux                        924   18875291   18874368
  Linux                       1824   18876191   18874368
  Linux                       2416   18876783   18874368
  Linux                       2934   18877301   18874368
  Linux                       3558   18877925   18874368
  Linux                       4090   18878457   18874368
  Linux                       4638   18879005   18874368
  Linux                       5356   18879723   18874368
  Linux                       5862   18880229   18874368
  Linux                       6598   18880965   18874368

When I mount it is just empty.
Before I made a restorecon -R -v /home
In addition, before the partition was visible from one
system (fedora 10) but not from another fedora 10.
I also notice that when every thing was OK it was mounted as
/dev/dm-6/home and not as it was supposed to be: /dev/VG1/home.
I have done something wrong but I cannot understand what !
While the geometry would have change ?
I also run a fixfile.

The other strange thing is also that only this partition became wrong.
while the mounting by using dm-x was for all the partition while
it was supposed to be /dev/VG1.

I can recover the partition because there is a backup but I would like
to understand !

Thank.


--
---
==========================================================================
 Patrick DUPRÃ                      |   |
 Department of Chemistry            |   |  Phone: (44)-(0)-1904-434384
 The University of York             |   |  Fax:   (44)-(0)-1904-432516
 Heslington                         |   |
 York YO10 5DD  United Kingdom      |   |  email: patrick.dupre@xxxxxxxxxx
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