== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:49:38 (1724762978)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.94153 s, 35.6 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff8800b6d05800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.09778
Iter 1/10: OSS cache speed: 1.04567
Iter 1/10: ladvise speed: 1.56188
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.7611
Iter 2/10: OSS cache speed: 1.90199
Iter 2/10: ladvise speed: 1.91009
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.75855
Iter 3/10: OSS cache speed: 1.83591
Iter 3/10: ladvise speed: 1.97784
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.01259
Iter 4/10: OSS cache speed: 2.01625
Iter 4/10: ladvise speed: 2.07503
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.40754
Iter 5/10: OSS cache speed: 2.16797
Iter 5/10: ladvise speed: 2.23371
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.57462
Iter 6/10: OSS cache speed: 2.4852
Iter 6/10: ladvise speed: 2.70157
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.10348
Iter 7/10: OSS cache speed: 1.89596
Iter 7/10: ladvise speed: 1.85321
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.00677
Iter 8/10: OSS cache speed: 2.60593
Iter 8/10: ladvise speed: 2.65002
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.71494
Iter 9/10: OSS cache speed: 2.60535
Iter 9/10: ladvise speed: 2.86623
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.64722
Iter 10/10: OSS cache speed: 2.60622
Iter 10/10: ladvise speed: 2.67171
Average uncached read: 2.10
Average speedup with OSS cached read: 2.11 = +.47%
Average speedup with ladvise willread: 2.25 = +7.14%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 25353:   < 20 : < 20 : syntax error: operand expected (error token is "< 20 ")
lfs ladvise: cannot give advice: Operation not supported (95)
ladvise: cannot give advice 'dontneed' to file '/mnt/lustre/f255a.sanity': Operation not supported
osd-zfs does not support dontneed or drop_caches
fail_loc=0