== sanity test 248c: verify whole file read behavior ===== 09:42:22 (1787838142)
llite.lustre-ffff8c5a431ad800.read_ahead_stats=c
striped dir -i0 -c2 -H all_char  /mnt/lustre/d248c.sanity
llite.lustre-ffff8c5a431ad800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.51172 seconds
llite.lustre-ffff8c5a431ad800.read_ahead_stats=
snapshot_time                       1787838152.648906553 secs.nsecs
start_time                          1787838144.407656752 secs.nsecs
elapsed_time                        8.241249801 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-ffff8c5a431ad800.read_ahead_stats=clear
llite.lustre-ffff8c5a431ad800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.40043 seconds
llite.lustre-ffff8c5a431ad800.read_ahead_stats=
snapshot_time                       1787838161.032339574 secs.nsecs
start_time                          1787838152.689914604 secs.nsecs
elapsed_time                        8.342424970 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-ffff8c5a431ad800.max_read_ahead_whole_mb=4