Hi, one of our servers crashed / hung several times in the past days with similar errors regarding XFS. Unfortunately we are unable to interprete the call trace of dmesg to pinpoint the exact problem and I hope you could help me to do so. We already ran xfs_repair to ensure that there are no filesystem errors. Here is an example dmesg output of recent crash of the mentioned server: 2019-01-12 06:06:35 INFO: task mysqld:1171 blocked for more than 120 seconds. 2019-01-12 06:06:35 Tainted: G 4.12.0+139-ph #1 2019-01-12 06:06:35 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. 2019-01-12 06:06:35 mysqld D 0 1171 1 0x00080000 2019-01-12 06:06:35 Call Trace: 2019-01-12 06:06:35 ? __schedule+0x3bc/0x820 2019-01-12 06:06:35 ? strlcpy+0x31/0x40 2019-01-12 06:06:35 ? kernfs_path_from_node_locked+0x238/0x320schedule+0x32/0x80xlog_grant_head_wait+0xca/0x200xlog_grant_head_check+0x86/0xe0xfs_log_reserve+0xc7/0x1c0xfs_trans_reserve+0x169/0x1c0xfs_trans_alloc+0xb9/0x130xfs_vn_update_time+0x4e/0x130file_update_time+0xa7/0x100xfs_file_aio_write_checks+0x178/0x1a0 2019-01-12 06:06:35 ? ktime_get+0x3e/0xa0xfs_file_dio_aio_write+0xb1/0x230xfs_file_write_iter+0xff/0x150aio_write+0xf6/0x150 2019-01-12 06:06:35 ? queue_unplugged+0x25/0xa0 2019-01-12 06:06:35 ? kmem_cache_alloc+0xf7/0x570 2019-01-12 06:06:35 ? do_io_submit+0x35c/0x690do_io_submit+0x35c/0x690 2019-01-12 06:06:35 ? do_syscall_64+0x74/0x150do_syscall_64+0x74/0x150entry_SYSCALL_64_after_hwframe+0x3d/0xa2 2019-01-12 06:06:35 RIP: 0033:0x7f37aa6b6717 2019-01-12 06:06:35 RSP: 002b:00007f32953f4228 EFLAGS: 00000206 ORIG_RAX: 00000000000000d1 2019-01-12 06:06:35 RAX: ffffffffffffffda RBX: 00000000000040f6 RCX: 00007f37aa6b6717 2019-01-12 06:06:35 RDX: 00007f32953f4230 RSI: 0000000000000001 RDI: 00007f37aaef9000 2019-01-12 06:06:35 RBP: 00007f32953f4250 R08: 00007f32953f4230 R09: 0000000000000000 2019-01-12 06:06:35 R10: 0000000000010000 R11: 0000000000000206 R12: 00007f32953f4370 2019-01-12 06:06:35 R13: 00007f37a806d158 R14: 00007f32a5829b98 R15: 00007f379df26100 Thanks, Daniel
