[LU-2768] 2.1 <-> 2.4 interop can't create file after upgrade

• Type: Bug
• Resolution: Duplicate
• Priority: Blocker
• Affects Version/s: Lustre 2.4.0
• Labels: HB
• Severity: 3
• Bugzilla ID: 2,775
• Assignee: Alex Zhuravlev
• Reporter: Niu Yawei (Inactive)

Description

When I try to mount 2.1 devices with 2.4, I found the following error message:

LustreError: 11740:0:(ost_handler.c:122:ost_validate_obdo()) lustre-OST0001: client 0@lo sent invalid object 2:4295032832
LustreError: 11499:0:(osp_precreate.c:740:osp_precreate_cleanup_orphans()) lustre-OST0001-osc-MDT0000: cannot cleanup orphans: rc = -71
LustreError: 11740:0:(ost_handler.c:122:ost_validate_obdo()) lustre-OST0000: client 0@lo sent invalid object 2:4294967296
LustreError: 11-0: lustre-OST0000-osc-MDT0000: Communicating with 0@lo, operation ost_create failed with -71.
LustreError: Skipped 1 previous similar message
LustreError: 11497:0:(osp_precreate.c:740:osp_precreate_cleanup_orphans()) lustre-OST0000-osc-MDT0000: cannot cleanup orphans: rc = -71

And any following creation will fail with ENOSPC because osp_precreate_reserve() always return -PROTO:

[root@rhel6 tests]# dd if=/dev/zero of=/mnt/lustre/c bs=1M count=1 oflag=sync
dd: opening `/mnt/lustre/c': No space left on device