[LU-3716] mds-survey ASSERTION( lu_device_is_mdt(o->lo_dev) )

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.7.0
• Affects Version/s: Lustre 2.4.0, Lustre 2.5.1
• Labels: HB llnl server zfs
• Severity: 3
• Assignee: Jian Yu
• Reporter: Brian Behlendorf

Description

Observed fairly repeatably when running mds-survey.sh after the first few million creates. It appears unlikely to occur when creating less than 100,00 objects (the default).

2013-08-06 15:05:51 LustreError: 4379:0:(mdt_handler.c:2352:mdt_obj()) ASSERTION( lu_device_is_mdt(o->lo_dev) ) failed:
2013-08-06 15:05:51 LustreError: 4379:0:(mdt_handler.c:2352:mdt_obj()) LBUG

The failures where observed with code post 2.4.0 which includes the LU-2758 fix.