[LU-17620] Lustre client gets stuck in lov_layout_wait() awaiting for IO completion

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: WC Triage
• Reporter: Alex Zhuravlev

Description

number of threads are in this state and no threads "working" on IO:

PID: 107101   TASK: ffff922a41bccec0  CPU: 3    COMMAND: "lfs"
 #0 [ffff922a3a3efa28] __schedule at ffffffff826f6ab6
    /tmp/kernel/kernel/sched/core.c: 3755
 #1 [ffff922a3a3efa80] schedule at ffffffff826f7050
    /tmp/kernel/kernel/sched/core.c: 4602
 #2 [ffff922a3a3efa98] lov_layout_wait at ffffffffc0ad32ff [lov]
    /home/lustre/master-mine/lustre/lov/lov_object.c: 1275
 #3 [ffff922a3a3efaf0] lov_conf_set at ffffffffc0ad4500 [lov]
    /home/lustre/master-mine/lustre/lov/lov_object.c: 1430
 #4 [ffff922a3a3efb68] cl_conf_set at ffffffffc04618aa [obdclass]
    /home/lustre/master-mine/lustre/obdclass/cl_object.c: 318
 #5 [ffff922a3a3efb98] ll_layout_conf at ffffffffc11bc162 [lustre]
    /home/lustre/master-mine/lustre/llite/file.c: 6180
 #6 [ffff922a3a3efc08] ll_layout_lock_set at ffffffffc11bca1c [lustre]
    /home/lustre/master-mine/lustre/llite/file.c: 6359
 #7 [ffff922a3a3efcd8] ll_layout_refresh at ffffffffc11bd92e [lustre]
    /home/lustre/master-mine/lustre/llite/file.c: 6485
 #8 [ffff922a3a3efd30] vvp_io_init at ffffffffc12117f2 [lustre]
    /home/lustre/master-mine/lustre/llite/vvp_io.c: 1877
 #9 [ffff922a3a3efd60] __cl_io_init at ffffffffc046c97d [obdclass]
    /home/lustre/master-mine/lustre/obdclass/cl_io.c: 135
#10 [ffff922a3a3efd90] ll_ioc_data_version at ffffffffc11aa3e5 [lustre]
    /home/lustre/master-mine/lustre/llite/file.c: 3332
#11 [ffff922a3a3efdc8] ll_file_ioctl at ffffffffc11c489d [lustre]
    /home/lustre/master-mine/lustre/llite/file.c: 3366
#12 [ffff922a3a3efe90] do_vfs_ioctl at ffffffff82273479
    /tmp/kernel/fs/ioctl.c: 48
#13 [ffff922a3a3efef8] ksys_ioctl at ffffffff82273af5
    /tmp/kernel/./include/linux/file.h: 44
#14 [ffff922a3a3eff30] __x64_sys_ioctl at ffffffff82273b41
    /tmp/kernel/fs/ioctl.c: 753
#15 [ffff922a3a3eff38] do_syscall_64 at ffffffff82002a2b
    /tmp/kernel/arch/x86/entry/common.c: 302
#16 [ffff922a3a3eff50] entry_SYSCALL_64_after_hwframe at ffffffff8280007d
    /tmp/kernel/arch/x86/entry/entry_64.S: 147

Issue Links

• is related to: LU-17575 Require specific enable flag for lfs migrate -m (directory migration)