Darshan's Lustre module uses ioctl to determine striping information for files, but this ability has been deprecated in newer Lustre versions, leading to warnings like:

using old ioctl(LL_IOC_LOV_GETSTRIPE) on [0x2c002048c:0x25:0x0], use llapi_layout_get_by_path()

Another user has reported crashes if the Lustre module is not disabled, using Lustre version 2.11.0.300_cray_102_g3dbace1.

We should look at using the suggested API for retrieving this info, and confirm its overhead.