[LU-19417] TCU: misc code cleanup

• Type: Technical task
• Resolution: Unresolved
• Priority: Medium
• Severity: 3
• Assignee: WC Triage
• Reporter: Qian Yingjin

Description

 Missing "SPDX-License-Identifier: LGPL-2.1+" in liblustre_trash.c

Fix typo of "opterative" in lustre/mdd/mdd_device.c

Handle the overflow of filename appending with timestamp for repeated name deletion:
https://review.whamcloud.com/c/ex/lustre-release/+/60666/2..9/lustre/mdd/mdd_trash.c#b597
Truncate the name to the available space and hope for the best. It may be that the Y-M-D is enough to de-conflict the name in Trash and is still more useful than not saving the file at all.
Alternately, drop "Y", then "M", then "D" and only use "HH:MM:SS[.nsec]" and the timestamps on the inodes should be enough to figure it out?
Simple solution: truncate to max namelen and hope for no conflicts.

and other minor code style needing to be fixed.