[LU-11744] Unusual client build failure on CentOS 7.6

• Status: Open
• Project: Lustre
• Type: Bug
• Priority: Minor
• Reporter: Patrick Farrell (Inactive)
• Assignee: WC Triage
• Resolution: Unresolved
• Severity: 3

Description

I'm having an unusual client build issue on a brand new install of CentOS 7.6.  It looks like the compiler or something is newer than what's being used in Jenkins (kernel is not), because I'm getting a build failure that seems like it should have never worked on anything.  (So I assume some new check is in play, or something is odd on my node.)

Specifically:

/home/build/master/lustre-release/lustre/obdclass/llog_cat.c: In function ‘llog_cat_prep_log’:
/home/build/master/lustre-release/lustre/obdclass/llog_cat.c:284:42: error: ‘LLOGH_CAT’ undeclared (first use in this function)
down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
^
/home/build/master/lustre-release/lustre/obdclass/llog_cat.c:284:42: note: each undeclared identifier is reported only once for each function it appears in
/home/build/master/lustre-release/lustre/obdclass/llog_cat.c:285:47: error: ‘LLOGH_LOG’ undeclared (first use in this function)
down_write_nested(&(*ploghandle)->lgh_lock, LLOGH_LOG);

 

Looking at llog_cat.c; LLOGH_CAT and LLOGH_LOG are not declared until later in the file.  Fix is simple, but it's confusing that this ever built.  No especially recent changes to the file & all the Jenkins builds are working.  (It is probably something about my node - I just wanted to highlight the unusual nature of this in case it means something.)

I'll push a patch soon.

Comments

[Patrick Farrell (Inactive)]

It occurs to me - these are lockdep markers.  This may be some change in lockdep config.  So perhaps my kernel is different.  The headers are 957.1.3, but the kernel itself is just .957.