[LU-3727] LBUG (llite_nfs.c:281:ll_get_parent()) ASSERTION(body->valid & OBD_MD_FLID) failed

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.7.0
• Affects Version/s: Lustre 2.1.5, Lustre 1.8.9, Lustre 2.4.1
• Labels: patch
• Severity: 3
• Assignee: Emoly Liu
• Reporter: Oz Rentas

Description

At GE Global Research, we ran into an LBUG with a 1.8.9 client that is re-exporting 2.1.5 Lustre:

Jul 31 10:26:46 scinfra3 kernel: Installing knfsd (copyright (C) 1996 [e-mail]).
Jul 31 10:26:46 scinfra3 kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Jul 31 10:26:46 scinfra3 kernel: NFSD: starting 90-second grace period
Jul 31 10:26:53 scinfra3 ntpd[8318]: synchronized to 3.40.208.30, stratum 2
Jul 31 10:29:46 scinfra3 kernel: LustreError: 27396:0:(llite_nfs.c:281:ll_get_parent()) ASSERTION(body->valid & OBD_MD_FLID) failed
Jul 31 10:29:46 scinfra3 kernel: LustreError: 27396:0:(llite_nfs.c:281:ll_get_parent()) LBUG
Jul 31 10:29:46 scinfra3 kernel: Pid: 27396, comm: nfsd
Jul 31 10:29:46 scinfra3 kernel:
Jul 31 10g:29:46 scinfra3 kernel: Call Trace:
Jul 31 10:29:46 scinfra3 kernel: [ ] libcfs_debug_dumpstack+0x51/0x60 [libcfs]
Jul 31 10:29:46 scinfra3 kernel: [ ] lbug_with_loc+0x7a/0xd0 [libcfs]
Jul 31 10:29:46 scinfra3 kernel: [ ] tracefile_init+0x0/0x110 [libcfs]
Jul 31 10:29:46 scinfra3 kernel: [ ] ll_get_parent+0x1e3/0x2b0 [lustre]
Jul 31 10:29:46 scinfra3 kernel: [ ] ll_get_dentry+0x6b/0xe0 [lustre]
Jul 31 10:29:46 scinfra3 kernel: [ ] mutex_lock+0xd/0x1d
Jul 31 10:29:46 scinfra3 kernel: [ ] find_exported_dentry+0x241/0x486 [exportfs]
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd_acceptable+0x0/0xdc [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] autoremove_wake_function+0x0/0x2e
Jul 31 10:29:46 scinfra3 kernel: [ ] sunrpc_cache_lookup+0x4b/0x128 [sunrpc]
Jul 31 10:29:46 scinfra3 kernel: [ ] exp_get_by_name+0x5b/0x71 [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] exp_find_key+0x89/0x9c [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd_acceptable+0x0/0xdc [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] ll_decode_fh+0x197/0x240 [lustre]
Jul 31 10:29:46 scinfra3 kernel: [ ] set_current_groups+0x116/0x164
Jul 31 10:29:46 scinfra3 kernel: [ ] fh_verify+0x29c/0x4cf [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd3_proc_getattr+0x8a/0xbe [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd_dispatch+0xd8/0x1d6 [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] svc_process+0x3f8/0x6bf [sunrpc]
Jul 31 10:29:46 scinfra3 kernel: [ ] __down_read+0x12/0x92
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd+0x0/0x2cb [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd+0x1a5/0x2cb [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] child_rip+0xa/0x11
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd+0x0/0x2cb [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] nfsd+0x0/0x2cb [nfsd]
Jul 31 10:29:46 scinfra3 kernel: [ ] child_rip+0x0/0x11
Jul 31 10:29:46 scinfra3 kernel:

It appears to be easily reproducible, we are going to try to get a core dump, but I was wondering if there was anything obvious from this trace or any other jira tickets I might have missed. Also is there any other information that might be useful?

Thanks.

Issue Links

• is related to: LU-5730 intermittent I/O errors for some directories