[LU-3233] tgt_cb_last_committed()) ASSERTION( ccb->llcc_exp->exp_obd == ccb->llcc_tgt->lut_obd ) failed:

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.4.1, Lustre 2.5.0
• Affects Version/s: Lustre 2.4.0
• Labels: mdt
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

I see this running racer on a single node MDSCOUNT=2 llmount.sh filesystem. (I upgraded the LASSERT() to an LASSERTF().)

LustreError: 10307:0:(mdt_recovery.c:390:mdt_last_rcvd_update()) Trying to overwrite bigger transno:on-disk: 4295820775, new: 4295609707 replay: 0. see LU-617.
LustreError: 10277:0:(tgt_lastrcvd.c:412:tgt_cb_last_committed()) ASSERTION( ccb->llcc_exp->exp_obd == ccb->llcc_tgt->lut_obd ) failed: exp_obd ffff88014fb182f8 != lut_obd ffff88016c536178

Breakpoint 2, lbug_with_loc (msgdata=0xffffffffa12c9360) at /root/lustre-release/libcfs/libcfs/linux/linux-debug.c:167
167	        libcfs_debug_msg(msgdata, "LBUG\n");
(gdb) bt
#0  lbug_with_loc (msgdata=0xffffffffa12c9360)
    at /root/lustre-release/libcfs/libcfs/linux/linux-debug.c:167
#1  0xffffffffa12613e9 in tgt_cb_last_committed (env=<value optimized out>, 
    th=<value optimized out>, cb=0xffff88017377cb40, err=<value optimized out>)
    at /root/lustre-release/lustre/ptlrpc/../../lustre/target/tgt_lastrcvd.c:410
#2  0xffffffffa0874a24 in osd_trans_commit_cb (sb=<value optimized out>, 
    jcb=<value optimized out>, error=0)
    at /root/lustre-release/lustre/osd-ldiskfs/osd_handler.c:646
#3  0xffffffffa082610a in ldiskfs_journal_commit_callback (
    journal=<value optimized out>, txn=0xffff880177622a80)
    at /root/lustre-release/ldiskfs/ldiskfs/super.c:329
#4  0xffffffffa007584f in jbd2_journal_commit_transaction (journal=0xffff880150255800)
    at fs/jbd2/commit.c:1049
#5  0xffffffffa007b698 in kjournald2 (arg=0xffff880150255800) at fs/jbd2/journal.c:163
#6  0xffffffff81090626 in kthread (_create=0xffff880160ab15c8) at kernel/kthread.c:78
#7  0xffffffff8100c0ca in ?? () at arch/x86/kernel/entry_64.S:1211
#8  0x0000000000000000 in ?? ()
(gdb) p *((struct obd_device *) 0xffff88014fb182f8)
$2 = {
  obd_type = 0xffff88019705ca40, 
  obd_magic = 2874988271, 
  obd_name = "lustre-MDT0001", '\000' <repeats 113 times>, 
  obd_uuid = {
    uuid = "lustre-MDT0001_UUID", '\000' <repeats 20 times>
  }, 
...
(gdb) p *((struct obd_device *) 0xffff88016c536178)
$3 = {
  obd_type = 0xffff88019705ca40, 
  obd_magic = 2874988271, 
  obd_name = "lustre-MDT0000", '\000' <repeats 113 times>, 
  obd_uuid = {
    uuid = "lustre-MDT0000_UUID", '\000' <repeats 20 times>
  }, 
...

Issue Links

• is related to: LU-3231 fld_cache_lookup() copies fld_cache_entry onto lu_seq_range
• is related to: LU-3765 2.5.0<->2.1.5 interop: sanity test 24u: (mdt_handler.c:224:mdt_lock_pdo_init()) ASSERTION( namelen > 0 ) failed