Adding lun to an existing storage pool

Question

i have problems to add a lun to an existing storage pool.
The storage pool is data only type.
The log file /var/run/xsancvupdatefsxsan.log indicates:
^MMerging bitmap data ( 99%)99.00
^MMerging bitmap data (100%)
Bitmap fragmentation: 1900004 chunks (0%)
Bitmap fragmentation threshold exceeded. Aborting.
Invalid argument
Fatal: Failed to expand stripe group
Check configuration and try again
After run the defrag command to some folders the log indicates:
Merging bitmap data (100%)
Bitmap fragmentation: 1898528 chunks (0%)
Bitmap fragmentation threshold exceeded. Aborting.
Invalid argument
Fatal: Failed to expand stripe group
Check configuration and try again
Do i need to run a complete defrag ?
Apple documentation indicates we need to delete the data before add the new LUN because there´s an issue. (is a very big issue!!!).
http://docs.info.apple.com/article.html?artnum=303571
Thanks for any help.
xsan 1.4   Mac OS X (10.4.8)  

Answer 1

hi william, thanks for your answer.
Right now my storage is %68 used.
Do you think, if i have < 60% used, the storage pool expansion will work?
I prefer to add a lun to a storage pool instead to create a new storage pool, because adding a lun add bandwith too.
thanks for any advice.
CCL