sgp_dd: : 5.52 20160121

Usage: sgp_dd [bs=BS] [count=COUNT] [ibs=BS] [if=IFILE] [iflag=FLAGS] [obs=BS] [of=OFILE] [oflag=FLAGS] [seek=SEEK] [skip=SKIP] [--help] [--version] [bpt=BPT] [cdbsz=6|10|12|16] [coe=0|1] [deb=VERB] [dio=0|1] [fua=0|1|2|3] [sync=0|1] [thr=THR] [time=0|1] [verbose=VERB] where: bpt is blocks_per_transfer (default is 128) bs must be device block size (default 512) cdbsz size of SCSI READ or WRITE cdb (default is 10) coe continue on error, 0->exit (def), 1->zero + continue count number of blocks to copy (def: device size) deb for debug, 0->none (def), > 0->varying degrees of debug dio is direct IO, 1->attempt, 0->indirect IO (def) fua force unit access: 0->don't(def), 1->OFILE, 2->IFILE, 3->OFILE+IFILE if file or device to read from (def: stdin) iflag comma separated list from: [coe,dio,direct,dpo,dsync,excl, fua, null] of file or device to write to (def: stdout), OFILE of '.' treated as /dev/null oflag comma separated list from: [append,coe,dio,direct,dpo,dsync, excl,fua,null] seek block position to start writing to OFILE skip block position to start reading from IFILE sync 0->no sync(def), 1->SYNCHRONIZE CACHE on OFILE after copy thr is number of threads, must be > 0, default 4, max 16 time 0->no timing(def), 1->time plus calculate throughput verbose same as 'deb=VERB': increase verbosity --help output this usage message then exit --version output version string then exit Copy from IFILE to OFILE, similar to dd command specialized for SCSI devices, uses multiple POSIX threads