== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:03:42 (1781661822)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.87446 s, 17.8 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-ffff9963e0030800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.05409
Iter 1/10: OSS cache speed: 1.9169
Iter 1/10: ladvise speed: 2.04579
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.98845
Iter 2/10: OSS cache speed: 2.03921
Iter 2/10: ladvise speed: 2.07068
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.11158
Iter 3/10: OSS cache speed: 2.11904
Iter 3/10: ladvise speed: 1.97363
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.10172
Iter 4/10: OSS cache speed: 1.87388
Iter 4/10: ladvise speed: 1.72481
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.88437
Iter 5/10: OSS cache speed: 1.84718
Iter 5/10: ladvise speed: 2.01771
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.77178
Iter 6/10: OSS cache speed: 1.61307
Iter 6/10: ladvise speed: 1.66814
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.21272
Iter 7/10: OSS cache speed: 1.19465
Iter 7/10: ladvise speed: 1.2947
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.14115
Iter 8/10: OSS cache speed: 1.26334
Iter 8/10: ladvise speed: 1.26868
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.10635
Iter 9/10: OSS cache speed: 1.15805
Iter 9/10: ladvise speed: 1.14763
Iter 10/10: reading without willread hint