[LU-11850] Relocating /proc/fs/lustre/ost to /sys/kernel/debug/lustre/ost prevents non-root access

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Fix Version/s: Upstream
• Affects Version/s: Lustre 2.12.0
• Labels: llnl
• Severity: 3
• Assignee: James A Simmons
• Reporter: Mahmoud Hanafi

Description

For security reasons /sys/kernel/debug is restrict to root only so by relocating /proc/fs/lustre/ost & mdt to /sys/kenrnel/debug/lustre breaks many tools such as 'performance co pilot" that run as non-privilege users. We rely on such tools to collect lustre metric.

We could change the permissions on /sys/kernel/debug but that is not good security practice. Can there be a build option to selected the location?

Issue Links

• is duplicated by: LU-11988 Some lctl *_param values only readable by root
• is related to: LU-11988 Some lctl *_param values only readable by root
• is related to: LU-12244 lfs check subcommand no longer works as non-root user
• is related to: LU-12513 Address YAML limitations
• is related to: LU-17471 Add symlink /proc/fs/lustre/osd-*/*/brw_stats to from /proc/fs/lustre/osd-ldiskfs/*/brw_stats to /sys/kernel/debug/lustre/osd-*/*/brw_stats
• is related to: LU-12841 Add ability for lctl get_param to get subfield of YAML output
• is related to: LU-17472 Create python wrappers for liblustreapi
• is related to: LU-8066 Move lustre procfs handling to sysfs and debugfs.
• is related to: LU-9680 Improve the user land to kernel space interface for lustre