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| author | Douglas Gilbert <dgilbert@interlog.com> | 2019-09-17 21:53:05 +0000 |
|---|---|---|
| committer | Douglas Gilbert <dgilbert@interlog.com> | 2019-09-17 21:53:05 +0000 |
| commit | bcdf18e4dd92f592617c35edbc9ffbb2817bd36c (patch) | |
| tree | d408e019b135df92eb3f6860333865b9c9064b5c /doc/sg_read.8 | |
| parent | eaa9d929aba1cc812418582c779731bcde2adf68 (diff) | |
| download | sg3_utils-bcdf18e4dd92f592617c35edbc9ffbb2817bd36c.tar.gz | |
sync with fixes from Redhat, via github; remove testing/Makefile.cplus and testing/Makefile.cplus_fb
git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@832 6180dd3e-e324-4e3e-922d-17de1ae2f315
Diffstat (limited to 'doc/sg_read.8')
| -rw-r--r-- | doc/sg_read.8 | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/doc/sg_read.8 b/doc/sg_read.8 index 3f011349..c12dd57f 100644 --- a/doc/sg_read.8 +++ b/doc/sg_read.8 @@ -1,4 +1,4 @@ -.TH SG_READ "8" "November 2012" "sg3_utils\-1.35" SG3_UTILS +.TH SG_READ "8" "September 2019" "sg3_utils\-1.45" SG3_UTILS .SH NAME sg_read \- read multiple blocks of data, optionally with SCSI READ commands .SH SYNOPSIS @@ -29,6 +29,11 @@ are issued. "Zero block" means "do nothing" for SCSI READ 10, 12 and 16 byte commands (but not for the 6 byte variant). In practice "zero block" SCSI READ commands have low latency and so are one way to measure SCSI command overhead. +.PP +Please note: this is a very old utility that uses 32 bit integers for +disk LBAs and the count. Hence it will not be able to address beyond +2 Terabytes on a disk with logical blocks that are 512 bytes long. +Alternatives are the sg_dd and ddpt utilities. .SH OPTIONS .TP \fBblk_sgio\fR=0 | 1 @@ -171,14 +176,17 @@ Written by Douglas Gilbert. .SH "REPORTING BUGS" Report bugs to <dgilbert at interlog dot com>. .SH COPYRIGHT -Copyright \(co 2000\-2012 Douglas Gilbert +Copyright \(co 2000\-2019 Douglas Gilbert .br This software is distributed under the GPL version 2. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. .SH "SEE ALSO" To time streaming media read or write time see .B sg_dd -is in the sg3_utils package. The lmbench package contains +is in the sg3_utils package and +.B ddpt +in a package of the same name. +The lmbench package contains .B lmdd which is also interesting. .B raw(8), dd(1) |