== sanity test 248c: verify whole file read behavior ===== 18:48:56 (1786834136)
llite.lustre-ffff9cbc90084000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9cbc90084000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 7.07714 seconds
llite.lustre-ffff9cbc90084000.read_ahead_stats=
snapshot_time                       1786834146.112426560 secs.nsecs
start_time                          1786834138.454119251 secs.nsecs
elapsed_time                        7.658307309 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-ffff9cbc90084000.read_ahead_stats=clear
llite.lustre-ffff9cbc90084000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 6.18729 seconds
llite.lustre-ffff9cbc90084000.read_ahead_stats=
snapshot_time                       1786834154.010874166 secs.nsecs
start_time                          1786834146.126901454 secs.nsecs
elapsed_time                        7.883972712 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-ffff9cbc90084000.max_read_ahead_whole_mb=4