mysql with innodb_file_per_table - cannot see any .ibd files

I've configured mysql to use the innodb_file_per_table option.

Everything works fine, I've been able to transfer data from another mysql server to the server with innodb_file_per_table set. All records are accessible and the application has been working fine for a couple of days now.

However I cannot find the .ibd files. I've restarted mysql via /etc/init.d/mysql restart.

In the /var/lib/mysql/xxx (xxx being the catalog name) there is a .frm file, but not a .ibd file.

I cannot find the expected .ibd file anywhere.

The operating system used is Ubuntu Linux:

Linux 2.6.24-24-server #1 SMP Tue Aug 18 16:51:43 UTC 2009 x86_64 GNU/Linux

The interesting thing is that du and df show different informtions about occupied space - df says 34GB are occupied whereas du shows 19G; the difference of 15GB is roughly the data occupied by the .ibd file (as shown in mysql admin).

I've pasted the output of du + df as well as the /proc/xxx/fd contents for the mysqld process. Interestingly the fd shows "/var/lib/mysql/ibdata1 (deleted)".

]du --max-depth 1 -h /
12M     ./etc
3,8M    ./lib32
1,9G    ./var
8,0K    ./media
1,6G    ./usr
159M    ./tmp
125M    ./boot
4,0K    ./initrd
86M     ./root

4,0K    ./srv
196M    ./opt
16K     ./lost+found
15G     ./jboss
12K     ./mnt
708M    ./lib
0       ./proc
48K     ./home
48K     ./dev
0       ./sys

6,7M    ./sbin
4,6M    ./bin
19G     .

]df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1             221G   34G  177G  16% /
varrun                7,9G  260K  7,9G   1% /var/run
varlock               7,9G     0  7,9G   0% /var/lock
udev                  7,9G   36K  7,9G   1% /dev

devshm                7,9G     0  7,9G   0% /dev/shm

]l /proc/15215/fd
total 0
/dev/null
pipe:[31469149]
 socket:[31469165]
 /tmp/ibyTflWI (deleted)
 socket:[31469166]
pipe:[31469149]

/var/lib/mysql/ibdata1 (deleted)
/tmp/ibYr0wC6 (deleted)
/tmp/ibX4rGe0 (deleted)
/tmp/ibjOaQQT (deleted)
/tmp/ibbGtntN (deleted)
/var/lib/mysql/ib_logfile0 (deleted)
/var/lib/mysql/ib_logfile1 (deleted)

Here's the output of show table status:

mysql> show table status like '%xxx%';
+-----------------+--------+---------+------------+---------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-----------------+----------+----------------+----------------------------------------------------------------------------------+
| Name            | Engine | Version | Row_format | Rows    | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time | Check_time | Collation       | Checksum | Create_options | Comment                                                                          |
+-----------------+--------+---------+------------+---------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-----------------+----------+----------------+----------------------------------------------------------------------------------+
| xxx             | InnoDB |      10 | Compact    | 7982574 |           1674 | 13369344000 |               0 |     81526784 |         0 |           NULL | 2009-11-18 04:15:08 | NULL        | NULL       | utf8_general_ci |     NULL |                | InnoDB free: 4096 kB;                                                            |
+-----------------+--------+---------+------------+---------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-----------------+----------+----------------+----------------------------------------------------------------------------------+
1 row in set (0.21 sec)

and the mysql version: 5.0.51a-3ubuntu5.4