Hi, Since last monday we have a strange problem on one of our Lustre file-systems, the MDT started to crash with resulted in Kernel panics.
The configuration is as follows" 2 metadata servers, one providing the MGS the other the MDT, the metadata servers are configured in a HA setup with pacemaker. 18 data servers (oss'es), each if providing 6 OST's, each time 2 OSS's are configured in a HA setup with pacemaker. We have configured 59 clients to this setup, 50 'normal'-compute nodes 2 head nodes, 4 GPU-nodes, 2 nodes for ingest (data transport to other sites)1 node for Robinhood On the OSS'es en metadata servers are runnig lustre 2.7, all are based on ext4 We did e2fsck on all the volumes, and after that an lfsck, the following command was used for the lfsck: lctl lfsck_start -M cep4-fs-MDT0000 -A -t all -r This all did not brought us back to business, after mount the clients the MDT crashed again. We removed the changelog from the metadata and we are able to use the filesystem. When we enabled the changelog again on the MDT there was almost an instant crash of the MDT At this moment the process for which this storage cluster is in use depends on Robinhood and without the Changelog Robinhood doesn't work. The console log provided us with the following call traces: [-- MARK -- Mon Jul 23 10:00:00 2018] Lustre: 12777:0:(osd_internal.h:1014:osd_trans_exec_op()) cep4-fs-MDT0000-osd: Overflow in tracking declares for index, rb = 4 Pid: 12777, comm: mdt00_010 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0e13d88>] osd_trans_exec_op+0x1f8/0x2e0 [osd_ldiskfs] [<ffffffffa0e28b08>] osd_object_ea_create+0x198/0x8c0 [osd_ldiskfs] [<ffffffffa063a2eb>] local_object_create+0xdb/0x430 [obdclass] [<ffffffffa061dac2>] llog_osd_create+0x3d2/0x800 [obdclass] [<ffffffffa060c821>] llog_create+0x81/0x1e0 [obdclass] [<ffffffffa0613dd2>] llog_cat_new_log+0xe2/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f0a86>] mdd_xattr_del+0x386/0x3d0 [mdd] [<ffffffffa10f3c40>] mdd_xattr_set+0x3c0/0xe40 [mdd] [<ffffffffa0870a34>] ? lustre_msg_get_versions+0xa4/0x120 [ptlrpc] [<ffffffffa0fa804c>] ? mdt_version_save+0x8c/0x1a0 [mdt] [<ffffffffa0fb2615>] mdt_reint_setxattr+0x975/0x1810 [mdt] [<ffffffffa051f83c>] ? upcall_cache_get_entry+0x29c/0x880 [libcfs] [<ffffffffa0fa70cd>] mdt_reint_rec+0x5d/0x200 [mdt] [<ffffffffa0f8b23b>] mdt_reint_internal+0x4cb/0x7a0 [mdt] [<ffffffffa0f8b9ab>] mdt_reint+0x6b/0x120 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 Lustre: 154617:0:(osd_internal.h:1014:osd_trans_exec_op()) cep4-fs-MDT0000-osd: Overflow in tracking declares for index, rb = 4 Pid: 154617, comm: mdt00_035 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0e13d88>] osd_trans_exec_op+0x1f8/0x2e0 [osd_ldiskfs] [<ffffffffa0e28b08>] osd_object_ea_create+0x198/0x8c0 [osd_ldiskfs] [<ffffffffa063a2eb>] local_object_create+0xdb/0x430 [obdclass] [<ffffffffa061dac2>] llog_osd_create+0x3d2/0x800 [obdclass] [<ffffffffa060c821>] llog_create+0x81/0x1e0 [obdclass] [<ffffffffa0613dd2>] llog_cat_new_log+0xe2/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd][-- MARK -- Mon Jul 23 10:00:00 2018] Lustre: 12777:0:(osd_internal.h:1014:osd_trans_exec_op()) cep4-fs-MDT0000-osd: Overflow in tracking declares for index, rb = 4 Pid: 12777, comm: mdt00_010 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0e13d88>] osd_trans_exec_op+0x1f8/0x2e0 [osd_ldiskfs] [<ffffffffa0e28b08>] osd_object_ea_create+0x198/0x8c0 [osd_ldiskfs] [<ffffffffa063a2eb>] local_object_create+0xdb/0x430 [obdclass] [<ffffffffa061dac2>] llog_osd_create+0x3d2/0x800 [obdclass] [<ffffffffa060c821>] llog_create+0x81/0x1e0 [obdclass] [<ffffffffa0613dd2>] llog_cat_new_log+0xe2/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f0a86>] mdd_xattr_del+0x386/0x3d0 [mdd] [<ffffffffa10f3c40>] mdd_xattr_set+0x3c0/0xe40 [mdd] [<ffffffffa0870a34>] ? lustre_msg_get_versions+0xa4/0x120 [ptlrpc] [<ffffffffa0fa804c>] ? mdt_version_save+0x8c/0x1a0 [mdt] [<ffffffffa0fb2615>] mdt_reint_setxattr+0x975/0x1810 [mdt] [<ffffffffa051f83c>] ? upcall_cache_get_entry+0x29c/0x880 [libcfs] [<ffffffffa0fa70cd>] mdt_reint_rec+0x5d/0x200 [mdt] [<ffffffffa0f8b23b>] mdt_reint_internal+0x4cb/0x7a0 [mdt] [<ffffffffa0f8b9ab>] mdt_reint+0x6b/0x120 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 Lustre: 154617:0:(osd_internal.h:1014:osd_trans_exec_op()) cep4-fs-MDT0000-osd: Overflow in tracking declares for index, rb = 4 Pid: 154617, comm: mdt00_035 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0e13d88>] osd_trans_exec_op+0x1f8/0x2e0 [osd_ldiskfs] [<ffffffffa0e28b08>] osd_object_ea_create+0x198/0x8c0 [osd_ldiskfs] [<ffffffffa063a2eb>] local_object_create+0xdb/0x430 [obdclass] [<ffffffffa061dac2>] llog_osd_create+0x3d2/0x800 [obdclass] [<ffffffffa060c821>] llog_create+0x81/0x1e0 [obdclass] [<ffffffffa0613dd2>] llog_cat_new_log+0xe2/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f0a86>] mdd_xattr_del+0x386/0x3d0 [mdd] [<ffffffffa10f3c40>] mdd_xattr_set+0x3c0/0xe40 [mdd] [<ffffffffa0870a34>] ? lustre_msg_get_versions+0xa4/0x120 [ptlrpc] [<ffffffffa0fa804c>] ? mdt_version_save+0x8c/0x1a0 [mdt] [<ffffffffa0fb2615>] mdt_reint_setxattr+0x975/0x1810 [mdt] [<ffffffffa051f83c>] ? upcall_cache_get_entry+0x29c/0x880 [libcfs] [<ffffffffa0fa70cd>] mdt_reint_rec+0x5d/0x200 [mdt] [<ffffffffa0f8b23b>] mdt_reint_internal+0x4cb/0x7a0 [mdt] [<ffffffffa0f8b9ab>] mdt_reint+0x6b/0x120 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 Lustre: 12813:0:(osd_internal.h:1014:osd_trans_exec_op()) cep4-fs-MDT0000-osd: Overflow in tracking declares for index, rb = 4 Pid: 12813, comm: mdt00_020 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0e13d88>] osd_trans_exec_op+0x1f8/0x2e0 [osd_ldiskfs] [<ffffffffa0e28b08>] osd_object_ea_create+0x198/0x8c0 [osd_ldiskfs] [<ffffffffa063a2eb>] local_object_create+0xdb/0x430 [obdclass] [<ffffffffa061dac2>] llog_osd_create+0x3d2/0x800 [obdclass] [<ffffffffa060c821>] llog_create+0x81/0x1e0 [obdclass] [<ffffffffa0613dd2>] llog_cat_new_log+0xe2/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f0a86>] mdd_xattr_del+0x386/0x3d0 [mdd] [<ffffffffa10f3c40>] mdd_xattr_set+0x3c0/0xe40 [mdd] [<ffffffffa0870a34>] ? lustre_msg_get_versions+0xa4/0x120 [ptlrpc] [<ffffffffa0fa804c>] ? mdt_version_save+0x8c/0x1a0 [mdt] [<ffffffffa0fb2615>] mdt_reint_setxattr+0x975/0x1810 [mdt] [<ffffffffa051f83c>] ? upcall_cache_get_entry+0x29c/0x880 [libcfs] [<ffffffffa0fa70cd>] mdt_reint_rec+0x5d/0x200 [mdt] [<ffffffffa0f8b23b>] mdt_reint_internal+0x4cb/0x7a0 [mdt] [<ffffffffa0f8b9ab>] mdt_reint+0x6b/0x120 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 LustreError: 15586:0:(osd_handler.c:1017:osd_trans_start()) ASSERTION( get_current()->journal_info == ((void *)0) ) failed: LustreError: 15586:0:(osd_handler.c:1017:osd_trans_start()) LBUG Pid: 15586, comm: mdt_rdpg00_004 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0502e97>] lbug_with_loc+0x47/0xb0 [libcfs] [<ffffffffa0e1524d>] osd_trans_start+0x25d/0x660 [osd_ldiskfs] [<ffffffffa061ab4a>] llog_osd_destroy+0x42a/0xd40 [obdclass] [<ffffffffa0613edc>] llog_cat_new_log+0x1ec/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa0654fdf>] ? keys_fill+0x6f/0x190 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f18ee>] mdd_close+0x34e/0xc50 [mdd] [<ffffffffa0fba801>] mdt_mfd_close+0x3f1/0xac0 [mdt] [<ffffffffa0636905>] ? class_handle2object+0x95/0x190 [obdclass] [<ffffffffa0fbc313>] mdt_close+0x6f3/0xaa0 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 Kernel panic - not syncing: LBUG Pid: 15586, comm: mdt_rdpg00_004 Not tainted 2.6.32-504.8.1.el6_lustre.x86_64 #1 Call Trace: [<ffffffff81529b76>] ? panic+0xa7/0x16f [<ffffffffa0502eeb>] ? lbug_with_loc+0x9b/0xb0 [libcfs] [<ffffffffa0e1524d>] ? osd_trans_start+0x25d/0x660 [osd_ldiskfs] [<ffffffffa061ab4a>] ? llog_osd_destroy+0x42a/0xd40 [obdclass] [<ffffffffa0613edc>] ? llog_cat_new_log+0x1ec/0x710 [obdclass] [<ffffffffa061450a>] ? llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] ? llog_add+0x89/0x1c0 [obdclass] [<ffffffffa0654fdf>] ? keys_fill+0x6f/0x190 [obdclass] [<ffffffffa10d94e2>] ? mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] ? mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f18ee>] ? mdd_close+0x34e/0xc50 [mdd] [<ffffffffa0fba801>] ? mdt_mfd_close+0x3f1/0xac0 [mdt] [<ffffffffa0636905>] ? class_handle2object+0x95/0x190 [obdclass] [<ffffffffa0fbc313>] ? mdt_close+0x6f3/0xaa0 [mdt] [<ffffffffa08d056e>] ? tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ? ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] ? kthread+0x9e/0xc0 [<ffffffff8100c20a>] ? child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 [<ffffffffa10f0a86>] mdd_xattr_del+0x386/0x3d0 [mdd] [<ffffffffa10f3c40>] mdd_xattr_set+0x3c0/0xe40 [mdd] [<ffffffffa0870a34>] ? lustre_msg_get_versions+0xa4/0x120 [ptlrpc] [<ffffffffa0fa804c>] ? mdt_version_save+0x8c/0x1a0 [mdt] [<ffffffffa0fb2615>] mdt_reint_setxattr+0x975/0x1810 [mdt] [<ffffffffa051f83c>] ? upcall_cache_get_entry+0x29c/0x880 [libcfs] [<ffffffffa0fa70cd>] mdt_reint_rec+0x5d/0x200 [mdt] [<ffffffffa0f8b23b>] mdt_reint_internal+0x4cb/0x7a0 [mdt] [<ffffffffa0f8b9ab>] mdt_reint+0x6b/0x120 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 Lustre: 12813:0:(osd_internal.h:1014:osd_trans_exec_op()) cep4-fs-MDT0000-osd: Overflow in tracking declares for index, rb = 4 Pid: 12813, comm: mdt00_020 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0e13d88>] osd_trans_exec_op+0x1f8/0x2e0 [osd_ldiskfs] [<ffffffffa0e28b08>] osd_object_ea_create+0x198/0x8c0 [osd_ldiskfs] [<ffffffffa063a2eb>] local_object_create+0xdb/0x430 [obdclass] [<ffffffffa061dac2>] llog_osd_create+0x3d2/0x800 [obdclass] [<ffffffffa060c821>] llog_create+0x81/0x1e0 [obdclass] [<ffffffffa0613dd2>] llog_cat_new_log+0xe2/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f0a86>] mdd_xattr_del+0x386/0x3d0 [mdd] [<ffffffffa10f3c40>] mdd_xattr_set+0x3c0/0xe40 [mdd] [<ffffffffa0870a34>] ? lustre_msg_get_versions+0xa4/0x120 [ptlrpc] [<ffffffffa0fa804c>] ? mdt_version_save+0x8c/0x1a0 [mdt] [<ffffffffa0fb2615>] mdt_reint_setxattr+0x975/0x1810 [mdt] [<ffffffffa051f83c>] ? upcall_cache_get_entry+0x29c/0x880 [libcfs] [<ffffffffa0fa70cd>] mdt_reint_rec+0x5d/0x200 [mdt] [<ffffffffa0f8b23b>] mdt_reint_internal+0x4cb/0x7a0 [mdt] [<ffffffffa0f8b9ab>] mdt_reint+0x6b/0x120 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 LustreError: 15586:0:(osd_handler.c:1017:osd_trans_start()) ASSERTION( get_current()->journal_info == ((void *)0) ) failed: LustreError: 15586:0:(osd_handler.c:1017:osd_trans_start()) LBUG Pid: 15586, comm: mdt_rdpg00_004 Call Trace: [<ffffffffa0502895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa0502e97>] lbug_with_loc+0x47/0xb0 [libcfs] [<ffffffffa0e1524d>] osd_trans_start+0x25d/0x660 [osd_ldiskfs] [<ffffffffa061ab4a>] llog_osd_destroy+0x42a/0xd40 [obdclass] [<ffffffffa0613edc>] llog_cat_new_log+0x1ec/0x710 [obdclass] [<ffffffffa061450a>] llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] llog_add+0x89/0x1c0 [obdclass] [<ffffffffa0654fdf>] ? keys_fill+0x6f/0x190 [obdclass] [<ffffffffa10d94e2>] mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f18ee>] mdd_close+0x34e/0xc50 [mdd] [<ffffffffa0fba801>] mdt_mfd_close+0x3f1/0xac0 [mdt] [<ffffffffa0636905>] ? class_handle2object+0x95/0x190 [obdclass] [<ffffffffa0fbc313>] mdt_close+0x6f3/0xaa0 [mdt] [<ffffffffa08d056e>] tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] kthread+0x9e/0xc0 [<ffffffff8100c20a>] child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 Kernel panic - not syncing: LBUG Pid: 15586, comm: mdt_rdpg00_004 Not tainted 2.6.32-504.8.1.el6_lustre.x86_64 #1 Call Trace: [<ffffffff81529b76>] ? panic+0xa7/0x16f [<ffffffffa0502eeb>] ? lbug_with_loc+0x9b/0xb0 [libcfs] [<ffffffffa0e1524d>] ? osd_trans_start+0x25d/0x660 [osd_ldiskfs] [<ffffffffa061ab4a>] ? llog_osd_destroy+0x42a/0xd40 [obdclass] [<ffffffffa0613edc>] ? llog_cat_new_log+0x1ec/0x710 [obdclass] [<ffffffffa061450a>] ? llog_cat_add_rec+0x10a/0x450 [obdclass] [<ffffffffa060c1e9>] ? llog_add+0x89/0x1c0 [obdclass] [<ffffffffa0654fdf>] ? keys_fill+0x6f/0x190 [obdclass] [<ffffffffa10d94e2>] ? mdd_changelog_store+0x122/0x290 [mdd] [<ffffffffa10ecd0c>] ? mdd_changelog_data_store+0x16c/0x320 [mdd] [<ffffffffa10f18ee>] ? mdd_close+0x34e/0xc50 [mdd] [<ffffffffa0fba801>] ? mdt_mfd_close+0x3f1/0xac0 [mdt] [<ffffffffa0636905>] ? class_handle2object+0x95/0x190 [obdclass] [<ffffffffa0fbc313>] ? mdt_close+0x6f3/0xaa0 [mdt] [<ffffffffa08d056e>] ? tgt_request_handle+0x8be/0x1000 [ptlrpc] [<ffffffffa08805a1>] ? ptlrpc_main+0xe41/0x1960 [ptlrpc] [<ffffffffa087f760>] ? ptlrpc_main+0x0/0x1960 [ptlrpc] [<ffffffff8109e66e>] ? kthread+0x9e/0xc0 [<ffffffff8100c20a>] ? child_rip+0xa/0x20 [<ffffffff8109e5d0>] ? kthread+0x0/0xc0 [<ffffffff8100c200>] ? child_rip+0x0/0x20 We hope there is an solution for this problem and that we can go back to production. Best regards, -- *Hopko Meijering* University of Groningen Center for Information Technology (CIT) www.rug.nl/cit
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