[LU-11988] Some lctl *_param values only readable by root

• Type: Bug
• Resolution: Duplicate
• Priority: Major
• Affects Version/s: Lustre 2.12.0
• Labels: llnl
• Severity: 3
• Assignee: Patrick Farrell (Inactive)
• Reporter: Christopher Morrone (Inactive)

Description

Some lustre stats that used to be in /proc now reside in debugfs.  This seems all for the better, but it looks like the lctl [get|set|list]_param commands were not updated to look for the values in the new location.  Since the lctl *_param functions are meant to make these kinds of moves transparent to users, we think it is important to have lctl look in debugfs as well.

For example, in going from 2.10 to 2.12, we noticed that 'llite.*.stats' seem to have disappeared (but really are just hiding in debugfs):

$ lctl get_param 'llite.*.stats'
error: get_param: param_path 'llite/*/stats': No such file or directory

Issue Links

• duplicates: LU-11850 Relocating /proc/fs/lustre/ost to /sys/kernel/debug/lustre/ost prevents non-root access
• is related to: LU-11850 Relocating /proc/fs/lustre/ost to /sys/kernel/debug/lustre/ost prevents non-root access