Big problem with huge number of files

[Sergey Shyman]

Hi all,

I have an issue when I can't get directory listing for maildir with huge 
number of files inside. Neither ls, du or any other command finished 
successfully, it just running for hours without any success. Does 
anybody know how I could get directory listing and copies of my files? 
Any pointing would be great and greatly appreciated. Thanks in advance!

Here is info about this partition:
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          3395b7eb-746c-4fc1-a52e-76547ca7454d
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index 
filetype needs_recovery sparse_super large_file
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              30507008
Block count:              61008816
Reserved block count:     3050440
Free blocks:              36021498
Free inodes:              20268094
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      1024
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   512
Filesystem created:       Thu Apr 27 23:40:04 2006
Last mount time:          Fri Jan  2 15:11:02 2009
Last write time:          Fri Jan  2 15:52:25 2009
Mount count:              37
Maximum mount count:      -1
Last checked:             Thu Apr 27 23:40:04 2006
Check interval:           0 (<none>)
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:          128
Journal inode:            8
First orphan inode:       28213259
Default directory hash:   tea
Directory Hash Seed:      04e82a5e-98ca-4893-b03f-44d5f7227e8d
Journal backup:           inode blocks

This partition have noatime enabled.