[LU-8833] too many links to update llogs on zfs

• Type: Bug
• Resolution: Won't Fix
• Priority: Minor
• Labels: llnl
• Environment: Red Hat Enterprise Linux Server release 7.3; lustre-2.8.0_5.chaos-1.ch6.x86_64; zfs-0.7.0-0.5llnl.ch6.x86_64
• Severity: 3
• Assignee: Di Wang
• Reporter: Olaf Faaland

Description

Looking at an MDT under zfs, found that plain llogs, containing UPDATE_REC type entries, have 3 links. An example is:

oi.88/0x240019a58:0x6:0x0
update_log_dir/[0x240019a58:0x6:0x0]
oi.10/0x20000000a:0x9:0x0/[0x240019a58:0x6:0x0]

Note that the oi.88, oi.10, and update_log_dir entries all refer to the same underlying object/file.

Per Di, there should be fewer links.