== sanity test 248c: verify whole file read behavior ===== 14:34:50 (1731353690)
llite.lustre-ffff88012a5d9800.read_ahead_stats=c
striped dir -i0 -c2 -H crush /mnt/lustre/d248c.sanity
llite.lustre-ffff88012a5d9800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 35.7 seconds
llite.lustre-ffff88012a5d9800.read_ahead_stats=
snapshot_time             1731353693.233179951 secs.nsecs
start_time                1731353691.131741038 secs.nsecs
elapsed_time              2.101438913 secs.nsecs
hits                      16382 samples [pages]
misses                    2 samples [pages]
zero_size_window          1 samples [pages]
failed_to_fast_read       3 samples [pages]
readahead_pages           1 samples [pages] 16382 16382 16382
llite.lustre-ffff88012a5d9800.read_ahead_stats=clear
llite.lustre-ffff88012a5d9800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 35.6 seconds
llite.lustre-ffff88012a5d9800.read_ahead_stats=
snapshot_time             1731353695.517116468 secs.nsecs
start_time                1731353693.238226712 secs.nsecs
elapsed_time              2.278889756 secs.nsecs
hits                      16382 samples [pages]
misses                    2 samples [pages]
zero_size_window          1 samples [pages]
failed_to_fast_read       3 samples [pages]
readahead_pages           1 samples [pages] 16382 16382 16382
Test passed on attempt 0
llite.lustre-ffff88012a5d9800.max_read_ahead_whole_mb=64