failed raid re-create changed dev size

Hello,

I have raid5 with 6 devices. One drive died, however, I hot-removed the wrong one, so raid failed.

I found on internet that this can be fixed if I re-create raid with the same configuration, but with dead drive set as 'missing'.
I saved --examinate data for all drives, and re run raid creation:

mdadm --verbose --create /dev/md1 --level=5 --raid-devices=6 /dev/sdb missing /dev/sdc /dev/sdg /dev/sdf /dev/sde

However, I can not mount md1 and looks like it contains random data. The order is correct. However, I noticed that new raid device size is different from old one.

Old working raid --examine:
/dev/sdc:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 39f653e1:515c53b4:a88a1588:0bf0fd07
           Name : spire:1  (local to host spire)
  Creation Time : Fri Jun 29 01:59:00 2012
     Raid Level : raid5
   Raid Devices : 6

 Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
     Array Size : 14651325440 (13972.59 GiB 15002.96 GB)
  Used Dev Size : 5860530176 (2794.52 GiB 3000.59 GB)
    Data Offset : 2048 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : 93e652d6:35c69c71:501601cd:7e640042

    Update Time : Sun Dec  9 19:50:50 2012
       Checksum : f30bd58d - correct
         Events : 128287

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 2
   Array State : ..A.AA ('A' == active, '.' == missing)


Re-created raid examine:
/dev/sdc:
          Magic : a92b4efc
        Version : 1.2
    Feature Map : 0x0
     Array UUID : 39f653e1:515c53b4:a88a1588:0bf0fd07
           Name : spire:1  (local to host spire)
  Creation Time : Mon Dec 10 21:04:01 2012
     Raid Level : raid5
   Raid Devices : 6

 Avail Dev Size : 5860271024 (2794.40 GiB 3000.46 GB)
     Array Size : 14650675200 (13971.97 GiB 15002.29 GB)
  Used Dev Size : 5860270080 (2794.39 GiB 3000.46 GB)
    Data Offset : 262144 sectors
   Super Offset : 8 sectors
          State : clean
    Device UUID : 4d0fe5bc:c05ec2c4:68805eab:bed7ef9c

    Update Time : Mon Dec 10 21:04:39 2012
       Checksum : 676939cb - correct
         Events : 4

         Layout : left-symmetric
     Chunk Size : 512K

   Device Role : Active device 2
   Array State : A.AAAA ('A' == active, '.' == missing)


So "Avail Dev Size" differs with re-created one being smaller for ~100MB.
What could be the reason why I can't mount re-created raid?


Idea: smartctl on one of drives shows 17 reallocated sectors:
  5 Reallocated_Sector_Ct   0x0033   199   199   140    Pre-fail  Always       -       17

Could this be reason why re-created raid is smaller?

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