scsi_id: switch temporary node creation to /dev

[elogind.git] / extras / scsi_id / scsi_id.8

diff --git a/extras/scsi_id/scsi_id.8 b/extras/scsi_id/scsi_id.8
index 68d4a1c041a65a6867e9dd54c28e2ff86e89846f..691d5b8b05677c7cefef479f8a38bc4a2f025307 100644 (file)
--- a/extras/scsi_id/scsi_id.8
+++ b/extras/scsi_id/scsi_id.8
@@ -58,6 +58,10 @@ leading \-, runs in a hotplug mode, and expects the environment variable
 DEVPATH to specify the corresponding sysfs device. See section below on
 usage with \fBudev\fP.
 .TP
 DEVPATH to specify the corresponding sysfs device. See section below on
 usage with \fBudev\fP.
 .TP

+.BI \-a
+Always print information (model, vendor strings) about the device even
+if it does not support VPD pages.
+.TP

 .BI \-b
 The default behaviour \- treat the device as black listed, and do nothing
 unless a white listed device is found in the scsi_id config\-file.
 .BI \-b
 The default behaviour \- treat the device as black listed, and do nothing
 unless a white listed device is found in the scsi_id config\-file.


@@ -87,10 +91,18 @@ to generate any output.
 Prefix the identification string with the  driver model (sysfs) bus id of
 the SCSI device.
 .TP
 Prefix the identification string with the  driver model (sysfs) bus id of
 the SCSI device.
 .TP

-.BI \-p "\| 0x80 | 0x83"
-Use SCSI INQUIRY VPD page code 0x80 or 0x83. The default behaviour is to
-query the available VPD pages, and use page 0x83 if found, else page 0x80
-if found, else nothing.
+.BI \-p "\| 0x80 | 0x83 | pre-spc3-83"
+Use SCSI INQUIRY VPD page code 0x80, 0x83, or pre-spc3-83.
+.sp
+The default
+behaviour is to query the availabe VPD pages, and use page 0x83 if found,
+else page 0x80 if found, else nothing.
+.sp
+Page pre-spc3-83 should only be utilized for those scsi devices which
+are not compliant with the SPC-2 or SPC-3 format for page 83.  While this
+option is used for older model 4, 5, and 6 EMC Symmetrix devices, its
+use with SPC-2 or SPC-3 compliant devices will fallback to the page 83
+format supported by these devices.

 .TP
 .BI \-s "\| sysfs\-device"
 Generate an id for the
 .TP
 .BI \-s "\| sysfs\-device"
 Generate an id for the


@@ -99,7 +111,10 @@ The sysfs mount point must not be included. For example, use /block/sd,
 not /sys/block/sd.
 .TP
 .BI \-u
 not /sys/block/sd.
 .TP
 .BI \-u

-Reformat the output : replace all whitespaces by underscores
+Reformat the output : replace all whitespaces by underscores.
+.TP
+.BI \-x
+Export all data in KEY=<value> format used to import in other programs.

 .TP
 .BI \-v
 Generate verbose debugging output.
 .TP
 .BI \-v
 Generate verbose debugging output.


@@ -128,13 +143,18 @@ for example:
 .fi
 .P
 
 .fi
 .P
 

-An example \fBudev\fP rule using \fBscsi_id\fP, that will name a block
+\fBscsi_id\fP is one of the tools used in the "Linux Persistent Device Names"
+scheme that creates persistent device links in /dev/disk. It is called with
+the -x option which will print all values in a defined format to let udev
+import it into its own environment for later event processing.
+.sp
+An example custom \fBudev\fP rule using \fBscsi_id\fP, that will name a block

 device and any partitions for the device matching the \fBscsi_id\fP output
 of 312345:
 
 .sp
 .nf
 device and any partitions for the device matching the \fBscsi_id\fP output
 of 312345:
 
 .sp
 .nf

-BUS="scsi", PROGRAM="/sbin/scsi_id -d %N -s %p", RESULT="312345", NAME="disk%n"
+BUS=="scsi", PROGRAM=="/sbin/scsi_id -d %N -s %p", RESULT=="312345", NAME="disk%n"

 .fi
 .P
 
 .fi
 .P
 


@@ -146,7 +166,7 @@ BUS="scsi", PROGRAM="/sbin/scsi_id -d %N -s %p", RESULT="312345", NAME="disk%n"
 .fi
 .LP
 .SH "SEE ALSO"
 .fi
 .LP
 .SH "SEE ALSO"

-.BR udev (8), hotplug (8)
+.BR udev (8)

 .SH AUTHORS
 Developed by Patrick Mansfield <patmans@us.ibm.com> based on SCSI ID
 source included in earlier linux 2.5 kernels, sg_utils source, and SCSI
 .SH AUTHORS
 Developed by Patrick Mansfield <patmans@us.ibm.com> based on SCSI ID
 source included in earlier linux 2.5 kernels, sg_utils source, and SCSI