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| author | Douglas Gilbert <dgilbert@interlog.com> | 2018-08-13 05:24:09 +0000 |
|---|---|---|
| committer | Douglas Gilbert <dgilbert@interlog.com> | 2018-08-13 05:24:09 +0000 |
| commit | a059c857494382bb900dc23474b31c654017e461 (patch) | |
| tree | c8738fed0dc06aa9a0e0f1c6cf472166ff7255b9 /doc/sg_dd.8 | |
| parent | 9236f11e7389ec4658b06b3835ad4a6cceca9d50 (diff) | |
| download | sg3_utils-a059c857494382bb900dc23474b31c654017e461.tar.gz | |
apply most patches from sg3_utils-1.42-6.fc29.src*; sg_get_lba_status fixes; doco
git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@786 6180dd3e-e324-4e3e-922d-17de1ae2f315
Diffstat (limited to 'doc/sg_dd.8')
| -rw-r--r-- | doc/sg_dd.8 | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/sg_dd.8 b/doc/sg_dd.8 index 2773ee67..881d11ed 100644 --- a/doc/sg_dd.8 +++ b/doc/sg_dd.8 @@ -1,4 +1,4 @@ -.TH SG_DD "8" "June 2018" "sg3_utils\-1.43" SG3_UTILS +.TH SG_DD "8" "August 2018" "sg3_utils\-1.43" SG3_UTILS .SH NAME sg_dd \- copy data to and from files and devices, especially SCSI devices @@ -6,13 +6,13 @@ devices .B sg_dd [\fIbs=BS\fR] [\fIconv=CONV\fR] [\fIcount=COUNT\fR] [\fIibs=BS\fR] [\fIif=IFILE\fR] [\fIiflag=FLAGS\fR] [\fIobs=BS\fR] [\fIof=OFILE\fR] -[\fIoflag=FLAGS\fR] [\fIseek=SEEK\fR] [\fIskip=SKIP\fR] [\fI\-\-dry\-run\fR] -[\fI\-\-help\fR] [\fI\-\-verbose\fR] [\fI\-\-version\fR] +[\fIoflag=FLAGS\fR] [\fIseek=SEEK\fR] [\fIskip=SKIP\fR] [\fI\-\-help\fR] +[\fI\-\-verbose\fR] [\fI\-\-version\fR] .PP [\fIblk_sgio=\fR{0|1}] [\fIbpt=BPT\fR] [\fIcdbsz=\fR{6|10|12|16}] [\fIcoe=\fR{0|1|2|3}] [\fIcoe_limit=CL\fR] [\fIdio=\fR{0|1}] [\fIodir=\fR{0|1}] [\fIof2=OFILE2\fR] [\fIretries=RETR\fR] [\fIsync=\fR{0|1}] -[\fItime=\fR{0|1}] [\fIverbose=VERB\fR] [\fI\-V\fR] +[\fItime=\fR{0|1}] [\fIverbose=VERB\fR] [\fI\-\-dry\-run\fR] [\fI\-V\fR] .SH DESCRIPTION .\" Add any additional description here .PP @@ -52,20 +52,20 @@ is directly to the underlying device). Default is 0. See the 'sgio' flag. .TP \fBbpt\fR=\fIBPT\fR each IO transaction will be made using \fIBPT\fR blocks (or less if near -the end of the copy). Default is 128 for block sizes less that 2048 +the end of the copy). Default is 128 for logical block sizes less that 2048 bytes, otherwise the default is 32. So for bs=512 the reads and writes will each convey 64 KiB of data by default (less if near the end of the transfer or memory restrictions). When cd/dvd drives are accessed, the -block size is typically 2048 bytes and bpt defaults to 32 which again -implies 64 KiB transfers. The block layer when the blk_sgio=1 option +logical block size is typically 2048 bytes and bpt defaults to 32 which +again implies 64 KiB transfers. The block layer when the blk_sgio=1 option is used has relatively low upper limits for transfer sizes (compared to sg device nodes, see /sys/block/<dev_name>/queue/max_sectors_kb ). .TP \fBbs\fR=\fIBS\fR where \fIBS\fR .B must -be the block size of the physical device (if either the input or output -files are accessed via SCSI commands). Note that this differs from +be the logical block size of the physical device (if either the input or +output files are accessed via SCSI commands). Note that this differs from .B dd(1) which permits \fIBS\fR to be an integral multiple. Default is 512 which is usually correct for disks but incorrect for cdroms (which normally |