Doesn't DP 9.0.7 support device block size 512kb in linux (centos6.8) MA ?

we have linux media agent ( centos 6.8, ) connects with tape library MSL 4048  on SAN, and set the tape device block size 512kb.

the dp backup or copy session get following messages

Warning] From: BMA@css-dpma3 "DPMA3-MSL4048-LTO01"  Time: 16/11/2016 3:30:21 PM
[90:253]  Block Size setting of 512KB is too big. Maximum allowed block size for  this device type is 256KB.

...

Major] From: BMA@css-dpma3 "DPMA3-MSL4048-LTO01"  Time: 16/11/2016 3:31:27 PM
[90:65]   /dev/nst14
 Cannot append to medium (Invalid device block size 256KB, should be 512KB.)

how to fix this this issue.

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