[LU-4354] 2.1 clients fail to mount upgraded 2.4 filesystem with EEXIST

• Type: Bug
• Resolution: Not a Bug
• Priority: Critical
• Severity: 3
• Assignee: Cliff White (Inactive)
• Reporter: Ned Bass

Description

Clients are unable to mount an ldiskfs filesystem upgraded from 2.1 to 2.4.

Transcribed client messages:

mgc_request.c:247 do_config_log_add() failed processing sptlrpc log: -2
genops.c:304 class_newdev() ls4-OST0000-osc-... alread exists, won't add
obd_config.c:368:class_attach() Cannot create defvice ls4-OST000... of type osc: -17
obd_config.c:1491:class_config_llog_handler() Err -17 on cfg command:
 cmd=cf001 0:ls4-OST0000... 1:osc 2:ls4-clilov_UUID
LustreError: The configuration from log 'ls4-client' failed (-17). ...