o->od_readcache_max_iosize = OSD_READCACHE_MAX_IO_MB << 20;
o->od_writethrough_max_iosize = OSD_WRITECACHE_MAX_IO_MB << 20;
o->od_auto_scrub_interval = AS_DEFAULT;
- /* disable fallocate until issues are fixed: LU-14326/LU-14333 */
- o->od_fallocate_zero_blocks = -1;
+ /* default fallocate to unwritten extents: LU-14326/LU-14333 */
+ o->od_fallocate_zero_blocks = 0;
cplen = strlcpy(o->od_svname, lustre_cfg_string(cfg, 4),
sizeof(o->od_svname));