[linux-lvm] lvextend problem

[Guilio Iannazzo <iannazg@yahoo-inc.com>]

Hi,
about the *environment* :
[root@priscilla var]# cat /proc/version
Linux version 2.4.21-20.ELsmp (bhcompile@tweety.build.redhat.com) (gcc 
version 3.2.3 20030502 (Red Hat Linux 3.2.3-42)) #1 SMP Wed Aug 18 
20:46:40 EDT 2004

The *problem* :
I extended a logical volume following the procedure

umount -l /dev/Volume00/var

lvextend -L+5G /dev/Volume00/var
e2fsck -f /dev/Volume00/var
mount -l /dev/Volume00/var

The ouput of e2fsck was as following : 

[root@priscilla var]# e2fsck -f /dev/Volume00/var
e2fsck 1.32 (09-Nov-2002)
Pass 1: Checking inodes, blocks, and sizes
Duplicate blocks found... invoking duplicate block passes.
Pass 1B: Rescan for duplicate/bad blocks
Duplicate/bad block(s) in inode 40962: 164114 164115 164117
Duplicate/bad block(s) in inode 122885: 491781
Pass 1C: Scan directories for inodes with dup blocks.
Pass 1D: Reconciling duplicate blocks
(There are 2 inodes containing duplicate/bad blocks.)

File /run/utmp (inode #40962, mod time Tue Feb 27 10:20:28 2007)
  has 3 duplicate block(s), shared with 1 file(s):
        <filesystem metadata>
Clone duplicate/bad blocks<y>? yes

File /log/audit.d/bin.1 (inode #122885, mod time Tue Feb 27 14:01:00 2007)
  has 1 duplicate block(s), shared with 1 file(s):
        <filesystem metadata>
Clone duplicate/bad blocks<y>? yes

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information

/dev/Volume00/var: ***** FILE SYSTEM WAS MODIFIED *****
/dev/Volume00/var: 553/1572864 files (14.8% non-contiguous), 
706071/6291456 blocks

Now, once the filesystem mounted, I've lost all the data I had on /var 
(which I didn't back up, I know I know it's extremely stupid, luckily 
enough this is not a production machine).
For example

[root@priscilla var]# ll /var/
total 0

however

[root@priscilla var]# mkdir /var/log
mkdir: cannot create directory `/var/log': File exists

??
What happened ? How to get all the data back ?
Thank you

Giulio