[LU-19768] add jobstats, brw_stats, others to netlink/YAML output

• Type: Improvement
• Resolution: Unresolved
• Priority: Medium
• Affects Version/s: Lustre 2.17.0
• Labels: netlink stats
• Severity: 3
• Assignee: Minh Diep - TLC
• Reporter: Andreas Dilger

Description

The Lustre stats collection via Netlink/YAML is incomplete. It is not currently possible to access statistics from non-"stat" files, such as md_stats, jobstats, brw_stats.

These (and other) statistics need to be accessible via Netlink in order to provide a comprehensive monitoring interface for Lustre without having to scrape and parse text output via lctl.

Issue Links

• is related to: LU-11850 Relocating /proc/fs/lustre/ost to /sys/kernel/debug/lustre/ost prevents non-root access
• is related to: LU-9680 Improve the user land to kernel space interface for lustre
• is related to: LU-14858 kernfs tree to dump/traverse ldlm lock resources for debug
• is related to: LU-17472 Create programming wrappers (python, go) for liblustreapi Netlink stats API