bad primary chunk

[alishokry]

hello , I have informix 7 on hpux 10.20,
1- and I created dbspace called info2 on logical volume /dev/vg0/rlvol4, and iam not created any any database on this dbspace.
2- and the /dev/vg01/rlvol4 is removed by lvremove command ,
3- and i tried to drop this dbspace , but the system give me the message ( dbspace can't drop ,bad primary chunk , ISAM , intenal error.
4- i created again the logical volume rlvol4 ,
and i tried to drop again the dbspace info2 , but the system gives the same error ,

please , how i can solve this problem.

thank you