diff options
| author | Douglas Gilbert <dgilbert@interlog.com> | 2018-09-11 23:13:21 +0000 |
|---|---|---|
| committer | Douglas Gilbert <dgilbert@interlog.com> | 2018-09-11 23:13:21 +0000 |
| commit | 23b8f9c3a44e6be249911b97c4cf02da601be519 (patch) | |
| tree | d475856169c8a08001e1f8813408ed71bdc14197 /doc/sg_format.8 | |
| parent | 38a3773e8ef84bd18fcf266df4e697e431c73882 (diff) | |
| download | sg3_utils-23b8f9c3a44e6be249911b97c4cf02da601be519.tar.gz | |
sg_vpd: decode some WDC/Hitachi vendor VPD pages; sg_modes: accept acronym for page/subpage codes; attempted 1.43 release
git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@789 6180dd3e-e324-4e3e-922d-17de1ae2f315
Diffstat (limited to 'doc/sg_format.8')
| -rw-r--r-- | doc/sg_format.8 | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/doc/sg_format.8 b/doc/sg_format.8 index f25a2283..d1d3fdef 100644 --- a/doc/sg_format.8 +++ b/doc/sg_format.8 @@ -1,4 +1,4 @@ -.TH SG_FORMAT "8" "August 2018" "sg3_utils\-1.43" SG3_UTILS +.TH SG_FORMAT "8" "September 2018" "sg3_utils\-1.43" SG3_UTILS .SH NAME sg_format \- format, resize a SCSI disk or format a tape .SH SYNOPSIS @@ -406,6 +406,15 @@ default value of \fIPFU\fR (in \fI\-\-pfu=PFU\fR) is 0. So if neither \fI\-\-fmtpinfo=FPI\fR nor \fI\-\-pfu=PFU\fR are given then protection type 0 (i.e. no protection information) is chosen. .SH NOTES +After a format that changes the logical block size or the number of logical +blocks on a disk, the operating system may need to be told to re\-initialize +its setting for that disk. In Linux that can be done with: +.br + echo 1 > /sys/block/sd{letter(s)}/device/rescan +.br +where "letter(s)" will be between 'a' and 'zzz'. The lsscsi utility in Linux +can be used to check the various namings of a disk. +.PP The SBC\-2 standard states that the REQUEST SENSE command should be used for obtaining progress indication when the format command is underway. However, tests on a selection of disks shows that TEST UNIT READY @@ -614,11 +623,11 @@ quickly switch between 512 and 4096 byte logical block size. Assume disk starts with 4096 byte logical block size and all important data has been backed up. .PP - # sg_format \-\-format \-\-ffmt=1 \-\-size=512 \-\-count=\-1 /dev/sdd + # sg_format \-\-format \-\-ffmt=1 \-\-size=512 /dev/sdd .PP Now /dev/sdd should have 512 byte logical block size. And to switch it back: .PP - # sg_format \-\-format \-\-ffmt=1 \-\-size=4096 \-\-count=\-1 /dev/sdd + # sg_format \-\-format \-\-ffmt=1 \-\-size=4096 /dev/sdd .SH EXIT STATUS The exit status of sg_format is 0 when it is successful. Otherwise see the sg3_utils(8) man page. Unless the \fI\-\-wait\fR option is given, the @@ -637,4 +646,4 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. .B sg_turs(8), sg_requests(8), sg_inq(8), sg_modes(8), sg_vpd(8), .B sg_reassign(8), sg_readcap(8), sg3_utils(8), .B sg_sanitize(8) [all in sg3_utils], -.B mt(mt\-st), sdparm(8), scsiformat (old), hdparm(8) +.B lsscsi(8), mt(mt\-st), sdparm(8), scsiformat (old), hdparm(8) |