[LU-5451] (lod_dev.c:67:lod_fld_lookup()) ASSERTION( fid_is_sane(fid) ) failed: Invalid FID [0x0:0x0:0x0]

Wed, 18 Feb 2015 23:03:50 +0000

Running racer with 2 MDTs, migration disabled, http://review.whamcloud.com/#/c/5936/, and http://review.whamcloud.com/#/c/11319/. I see this:

[  196.021505] LustreError: 9497:0:(lod_dev.c:67:lod_fld_lookup()) ASSERTION( fid_is_sane(fid) ) failed: Invalid FID [0x0:0x0:0x0]
[  196.023832] LustreError: 9497:0:(lod_dev.c:67:lod_fld_lookup()) LBUG
[  196.024871] Pid: 9497, comm: mdt00_009
[  196.025538] 
[  196.025539] Call Trace:
[  196.026221]  [<ffffffffa02be8c5>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
[  196.027358]  [<ffffffffa02beec7>] lbug_with_loc+0x47/0xb0 [libcfs]
[  196.028357]  [<ffffffffa0d55265>] lod_fld_lookup+0x255/0x400 [lod]
[  196.029366]  [<ffffffffa0d68433>] lod_object_init+0x103/0x3c0 [lod]
[  196.030422]  [<ffffffffa0457f98>] lu_object_alloc+0xd8/0x320 [obdclass]
[  196.031520]  [<ffffffffa04596d8>] lu_object_find_at+0x208/0x360 [obdclass]
[  196.032762]  [<ffffffffa0459846>] lu_object_find+0x16/0x20 [obdclass]
[  196.033930]  [<ffffffffa0ca3e36>] mdt_object_find+0x56/0x170 [mdt]
[  196.035219]  [<ffffffffa0cabfd2>] mdt_object_find_lock+0x42/0x170 [mdt]
[  196.036535]  [<ffffffffa0cc9368>] mdt_lock_slaves+0x228/0x520 [mdt]
[  196.037802]  [<ffffffffa0cc9806>] mdt_attr_set+0x1a6/0x4d0 [mdt]
[  196.038965]  [<ffffffffa0ccaf1b>] mdt_reint_setattr+0x33b/0xfb0 [mdt]
[  196.040135]  [<ffffffffa0691a0e>] ? lustre_pack_reply_flags+0xae/0x1f0 [ptlrpc]
[  196.041440]  [<ffffffffa0cc13b1>] mdt_reint_rec+0x41/0xe0 [mdt]
[  196.042645]  [<ffffffffa0ca6c63>] mdt_reint_internal+0x4c3/0x7c0 [mdt]
[  196.043970]  [<ffffffffa0ca74eb>] mdt_reint+0x6b/0x120 [mdt]
[  196.044996]  [<ffffffffa06f2325>] tgt_request_handle+0x245/0xad0 [ptlrpc]
[  196.046165]  [<ffffffffa06a2dc1>] ptlrpc_main+0xce1/0x1970 [ptlrpc]
[  196.047279]  [<ffffffffa06a20e0>] ? ptlrpc_main+0x0/0x1970 [ptlrpc]
[  196.048355]  [<ffffffff8109eab6>] kthread+0x96/0xa0
[  196.049169]  [<ffffffff8100c30a>] child_rip+0xa/0x20
[  196.050003]  [<ffffffff81554710>] ? _spin_unlock_irq+0x30/0x40
[  196.050996]  [<ffffffff8100bb10>] ? restore_args+0x0/0x30
[  196.051906]  [<ffffffff8109ea20>] ? kthread+0x0/0xa0
[  196.052756]  [<ffffffff8100c300>] ? child_rip+0x0/0x20
[  196.053630] 
[  196.055757] Kernel panic - not syncing: LBUG
[  196.056077] Pid: 9497, comm: mdt00_009 Not tainted 2.6.32-431.5.1.el6.lustre.x86_64 #1
[  196.056758] Call Trace:

I assume that this is due to the way the full LMV xattr for a striped directory is synthesized when needed. I have seen similar crashes on the client.

Note that no fault injection was used here.

Whamcloud Community JIRA

[LU-5451] (lod_dev.c:67:lod_fld_lookup()) ASSERTION( fid_is_sane(fid) ) failed: Invalid FID [0x0:0x0:0x0]