== sanity test 248c: verify whole file read behavior ===== 22:33:17 (1763350397)
llite.lustre-ffff968372aa0800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2 /mnt/lustre/d248c.sanity
llite.lustre-ffff968372aa0800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 9.94531 seconds
llite.lustre-ffff968372aa0800.read_ahead_stats=
snapshot_time             1763350410.699960520 secs.nsecs
start_time                1763350399.825692926 secs.nsecs
elapsed_time              10.874267594 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-ffff968372aa0800.read_ahead_stats=clear
llite.lustre-ffff968372aa0800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 9.68256 seconds
llite.lustre-ffff968372aa0800.read_ahead_stats=
snapshot_time             1763350422.984159773 secs.nsecs
start_time                1763350410.749540184 secs.nsecs
elapsed_time              12.234619589 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-ffff968372aa0800.max_read_ahead_whole_mb=4