[LU-19850] obd: LustreError: 4396:0:(obd_class.h:478:obd_check_dev()) Device 2 not setup

• Type: Bug
• Resolution: Fixed
• Priority: Medium
• Affects Version/s: Upstream
• Severity: 3
• Assignee: Xiao Yang
• Reporter: Xiao Yang

Description

The following steps can reproduce the dmesg error on Rockylinux10.1:

 # mkfs.lustre --reformat --fsname=test --mgs /dev/nvme0n1
 # mount.lustre /dev/nvme0n1 /mnt/mgs/
 # lctl dl
0 UP osd-ldiskfs MGS-osd MGS-osd_UUID 5
1 UP mgs MGS MGS 5
2 UP mgc MGCXXX.XXX.XXX.XXX@tcp 1555f046-55f0-426a-bc74-18dcf5bd28b5 5
 # umount /mnt/mgs/

[81588.139994] LDISKFS-fs (nvme0n1): mounted filesystem e4d8e6d2-5e97-4d07-9609-379eef18dc49 r/w with ordered data mode. Quota mode: journalled.
[81613.918760] LustreError: 4497:0:(obd_class.h:478:obd_check_dev()) Device 2 not setup
[81613.921893] LustreError: 4497:0:(obd_class.h:478:obd_check_dev()) Skipped 1 previous similar message
[81613.929686] LDISKFS-fs (nvme0n1): unmounting filesystem e4d8e6d2-5e97-4d07-9609-379eef18dc49.
[81613.944498] Lustre: server umount MGS complete

Issue Links

• is related to: LU-19756 WARNING: CPU: 2 PID: 9729 at mm/page-writeback.c:2796 __folio_mark_dirty+0x208/0x260