== sanity test 248c: verify whole file read behavior ===== 22:06:27 (1788919587)
llite.lustre-ffff9c4a11b48000.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff9c4a11b48000.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 3.06906 seconds
llite.lustre-ffff9c4a11b48000.read_ahead_stats=
snapshot_time                       1788919591.895032995 secs.nsecs
start_time                          1788919588.493475863 secs.nsecs
elapsed_time                        3.401557132 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-ffff9c4a11b48000.read_ahead_stats=clear
llite.lustre-ffff9c4a11b48000.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.41242 seconds
llite.lustre-ffff9c4a11b48000.read_ahead_stats=
snapshot_time                       1788919596.081455146 secs.nsecs
start_time                          1788919591.907435419 secs.nsecs
elapsed_time                        4.174019727 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-ffff9c4a11b48000.max_read_ahead_whole_mb=4