[LU-8993] lctl debug_daemon should warn on relative pathnames

• Status: Resolved
• Project: Lustre
• Fix Version/s: Lustre 2.11.0
• Type: Improvement
• Priority: Major
• Reporter: Oleg Drokin
• Assignee: Steve Guminski (Inactive)
• Resolution: Fixed

Description

lctl debug_daemon userspace part would happily accept relative pathname, but in fact the kernel part of the code wold reject anything that does not start with a / as EINVAL which produces a cryptic error message to the user like

start debug_daemon on debug.log failed: Invalid argument

We should either require absolute pathname in the tool or at least print a warning that the relative pathnames are unsupported and the command will likely fail (leading to the actual failure that would be a lot less cryptic).

Comments

[Peter Jones]

Steve

Could you look into this?

Thanks

Peter

[Steve Guminski (Inactive)]

I'm already looking into lfs and lctl usability for other tickets, so this fits well with my current work.

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/25485/
Subject: LU-8993 utils: Use absolute pathname for debug_daemon log file
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 23f80c74c38dfd726ac1b50176989b3aa14e3a81

[Peter Jones]

Landed for 2.11