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.TH SG_LOGS "8" "December 2005" "sg3_utils-1.19" SG3_UTILS
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.TH SG_LOGS "8" "June 2006" "sg3_utils-1.21" SG3_UTILS
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sg_logs \- read SCSI device log pages
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[\fI-a\fR] [\fI-c=<page_control>\fR] [\fI-h\fR] [\fI-H\fR] [\fI-l\fR]
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[\fI-p=<page_code>\fR] [\fI-paramp=<parameter_pointer>\fR] [\fI-pcb\fR]
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[\fI-ppc\fR] [\fI-r\fR] [\fI-scum\fR] [\fI-sp\fR] [\fI-sthr\fR] [\fI-t\fR]
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[\fI-v\fR] [\fI-V\fR] [\fI-?\fR] \fI<scsi_device>\fR
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[\fI-a\fR] [\fI-A\fR] [\fI-c=<page_control>\fR] [\fI-h\fR] [\fI-H\fR]
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[\fI-l\fR] [\fI-L\fR] [\fI-p=<page_code>[,<subpage_code]\fR]
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[\fI-paramp=<parameter_pointer>\fR] [\fI-pcb\fR] [\fI-ppc\fR] [\fI-r\fR]
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[\fI-scum\fR] [\fI-sp\fR] [\fI-sthr\fR] [\fI-t\fR] [\fI-T\fR] [\fI-v\fR]
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[\fI-V\fR] [\fI-?\fR] \fI<scsi_device>\fR
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.\" Add any additional description here
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This utility sends a LOG SENSE SCSI command to the given device and then
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outputs the response. This is used in most cases to fetch log pages
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stored on the given device and known log pages are decoded and output
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in ASCII. In one case a LOG SELECT SCSI command is issued to reset
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in ASCII. In some cases a LOG SELECT SCSI command is issued to reset
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parameters back to the device manufacturer's default values.
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In SPC-4 revision 5 a subpage code was introduced to both the LOG
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SENSE and LOG SELECT command. At the same time a page code field was
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introduced to the to the LOG SELECT command. The log subpage code
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can range from 0 to ff (255) inclusive. The subpage code value 'ff'
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can be thought of as a wildcard.
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Options with arguments or with two or more letters can have an extra '-'
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prepended. For example: both '-pcb' and '--pcb' are acceptable.
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outputs all the log pages supported by the device.
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outputs all the log pages supported by the device. This requires
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a two stage process: first the supported log pages log page is
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fetched, then for each entry in the response, the corresponding
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log page is fetched and displayed.
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outputs all the log pages and subpages supported by the device. This
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requires a two stage process: first the supported log pages and subpages
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log page is fetched, then for each entry in the response, the corresponding
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log page is fetched and displayed.
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accepts 0, 1, 2 or 3 as an argument. 0 for current threshold values,
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lists the names of all logs sense pages supported by this device.
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See the list of common log page codes below.
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lists the names of all logs sense pages and subpages supported by this
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device. See the list of common log page codes below.
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log page code to fetch. Should be a hexadecimal number between 0 and 3f
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log page code to access. Should be a hexadecimal number between 0 and 3f
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inclusive. Commonly accessed log pages are listed below.
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-p=<page_code>,<subpage_code>
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log page code and subpage code to access. The page code should be a
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hexadecimal number between 0 and 3f inclusive. The subpage code should be
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a hexadecimal number between 0 and ff inclusive. The subpage code of 'ff'
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can be thought of as a wildcard.
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-paramp=<parameter_pointer>
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parameter pointer value (in hex) to place in command. Should be a number
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sets the Parameter Pointer Control (PPC) bit. Default is 0 (i.e. cleared).
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use LOG SELECT SCSI command (PCR bit) to reset all implemented parameter
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values to be the device defined (i.e. manufacturer's) default values. In
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most cases the default values are zeroes. This option seems to clear error
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counter log pages but leaves pages like self-test results, start-stop
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cycle counter and temperature log pages unaffected. This option may be
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required to clear log pages if a counter reaches its maximum value since
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the log page in which the counter is found will remain "stuck" until
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something is done. Most other options are ignored.
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use LOG SELECT SCSI command (PCR bit) to reset the given page or all pages
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to the implemented parameter values to be the device defined (i.e.
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manufacturer's) default values. In most cases the default values are zeroes.
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This option seems to clear error counter log pages but leaves pages like
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self-test results, start-stop cycle counter and temperature log pages
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unaffected. This option may be required to clear log pages if a counter
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reaches its maximum value since the log page in which the counter is found
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will remain "stuck" until something is done. Most other options are ignored.
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Prior to SPC-4 revision 5 the LOG SELECT command did not take a page
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code (or a subpage code).
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sets all cumulative parameters to their default values. Uses LOG SELECT
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SCSI command with pc=3 .
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sets all (or specified log page) cumulative parameters to their default
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values. Uses LOG SELECT SCSI command with pc=3 .
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sets the Saving Parameters (SP) bit. Default is 0 (i.e. cleared). When
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non-volatile locations.
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sets the current threshold parameters to the default threshold values.
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Uses LOG SELECT SCSI command with pc=2 .
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sets all (or specified log page) current threshold parameters to the default
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threshold values. Uses LOG SELECT SCSI command with pc=2 .
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outputs the temperature. First looks in the temperature log page and if
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that is not available tries the Informational Exceptions page which may also
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have the current temperature (especially in older disks).
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outputs the transport ('Protocol specific port') log page. Equivalent
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verbose: show SCSI command blocks prior to execution. '-vv'
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and '-vvv' are also accepted yielding greater verbosity.
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a SCSI generic (sg) device. In the 2.6 series block devices (e.g. disks
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and SCSI DVDs) can also be specified. For example "sg_logs -a /dev/sda"
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will work in the 2.6 series kernels.
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The exit status of sg_logs is 0 when it is successful. Otherwise see
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the sg3_utils(8) man page.
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Written by Doug Gilbert
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.SH "REPORTING BUGS"
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Report bugs to <dgilbert at interlog dot com>.
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Copyright \(co 2002-2005 Douglas Gilbert
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Copyright \(co 2002-2006 Douglas Gilbert
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This software is distributed under the GPL version 2. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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sg_logs.8
