[LU-9088] use od_is_ost check OST FID

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Minh Diep

Description

From Wangdi:

Because OST FLDB is not created until 2.6, so
if the DNE system is upgraded from 2.5 to >=
2.6, then the local FLDB will not be loaded
in fld_index_init(), which might cause OSD
can not tell OST FID created by 2.5. So let's
use od_is_ost in this case.