[LU-13395] unable to set "--comp-flags=prefer" on a new file

Duplicate — Mon, 8 Mar 2021 23:09:36 +0000

It is not possible to set "--comp-flags=prefer" in the default or regular file layout since patch https://review.whamcloud.com/33784 "LU-10070 lod: SEL: Layout sanity checking" landed in commit v2_12_55-84-g4eca26ddab.

The function "llapi_layout_sanity_cb()" is imposing a false constraint that LCME_FL_PREF_RW cannot be set on non-FLR files:

/* The component flags can be set by users at creation/modification time. */
#define LCME_USER_COMP_FLAGS    (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
                                 LCME_FL_EXTENSION)
:
               if (args->lsa_flr) {
                       if (comp->llc_flags & ~LCME_USER_COMP_FLAGS)
                               args->lsa_rc = LSE_FLAGS;
               } else {
                       if (comp->llc_flags & ~LCME_FL_EXTENSION)
                               args->lsa_rc = LSE_FLAGS;
               }
       }

Whamcloud Community JIRA

[LU-13395] unable to set "--comp-flags=prefer" on a new file