[LU-11563] 99-lustre.rules on clients tries to execute non-existent /usr/sbin/l_tunedisk

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.12.0, Lustre 2.10.6
• Affects Version/s: Lustre 2.10.5
• Environment: sles12sp3 kernel, Mellanox ofed 4.4.2, lustre client 2.10.5
• Severity: 3
• Assignee: Nathaniel Clark
• Reporter: Jay Lan (Inactive)

Description

Commit "LU-9551 utils: add l_tunedisk to fix disk tunings" added the following lines to 99-lustre.rules.

1. Ensure block devices re-added to the system allow for large writes (LU-9551)
   ACTION=="add|change", SUBSYSTEM=="block", RUN+="/usr/sbin/l_tunedisk /dev/%k"

However, /usr/sbin/l_tunedisk does not exist on lustre clients and resulted in dmesg:

Oct 23 08:06:49 lmds1 systemd[1]: Started udev Coldplug all Devices.
Oct 23 08:06:49 lmds1 systemd-udevd[1565]: failed to execute '/usr/sbin/l_tunedisk' '/usr/sbin/l_tunedisk /dev/sdb': No such file or directory
Oct 23 08:06:49 lmds1 systemd-udevd[1161]: Process '/usr/sbin/l_tunedisk /dev/sdb' failed with exit code 2.

Isn't this supposed to be on the server side only?

Issue Links

• is related to: LU-11736 Do not apply bulk IO tuning on MDT or MGT devices
• is related to: LU-9551 I/O errors when lustre uses multipath devices