sg_safte man page
sg_safte — access SCSI Accessed Fault-Tolerant Enclosure (SAF-TE) device
sg_safte [--config] [--devstatus] [--encstatus] [--flags] [--help] [--hex] [--insertions] [--raw] [--usage] [--verbose] [--version] DEVICE
Fetches enclosure status (via a SCSI READ BUFFER command). The DEVICE should be a SAF-TE device which may be a storage array controller (INQUIRY peripheral device type 0xc) or a generic processor device (INQUIRY peripheral device type 0x3).
If no options are given (only the DEVICE argument) then the overall enclosure status as reported by the option --config is reported.
Arguments to long options are mandatory for short options as well. The options are arranged in alphabetical order based on the long option name.
- -c, --config
will issues a Read Enclosure Configuration (READ BUFFER ID 0) cdb to the device, which returns a list of the enclosure hardware resources.
- -d, --devstatus
will issue a Read Device Slot Status (READ BUFFER ID 4) cdb to the device, which returns information about the current state of each drive or slot.
- -s, --encstatus
will issue a Read Enclosure Status (READ BUFFER ID 1) cdb to the device, which returns the operational state of the components.
- -f, --flags
will issue a Read Global Flags (READ BUFFER ID 5) cdb to the device, which read the most recent state of the global flags of the RAID processor device.
- -h, --help
output the usage message then exit.
- -H, --hex
output the response to a READ BUFFER command in ASCII hex to stdout. If used once, output the response to the first READ BUFFER command (i.e. with buffer_id=0). This should be the enclosure configuration. If used twice (or more often), the response to subsequent READ BUFFER commands is output.
- -i, --insertions
will issue a Read Device Insertions (READ BUFFER ID 3) cdb to the device, which returns information about the number of times devices have been inserted whilst the RAID system was powered on.
- -r, --raw
output the response to a READ BUFFER command in binary to stdout. If used once, output the response to the first READ BUFFER command (i.e. with buffer_id=0). This should be the enclosure configuration. If used twice (or more often), the response to subsequent READ BUFFER commands is output.
- -u, --usage
will issue a Read Usage Statistics (READ BUFFER ID 2) cdb to the device, which returns the information on total usage time and number of power-on cycles of the RAID device.
- -v, --verbose
increase the level of verbosity, (i.e. debug output).
- -V, --version
print the version string and then exit.
The implementation is based on the intermediate review document eg as found at
As the specification was never finalized this document serves as the de-facto standard.
Similar functionality is provided by SPC-4 SCSI Enclosure Services devices (Peripheral device type 0xd), which can be queried with the sg_ses utility.
To view the configuration:
To view the device slot status:
sg_safte --devstatus /dev/sg1
The exit status of sg_safte is 0 when it is successful. Otherwise see the sg3_utils(8) man page.
Written by Hannes Reinecke and Douglas Gilbert.
Report bugs to <dgilbert at interlog dot com>.
Copyright © 2004-2012 Hannes Reinecke and Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
sg_inq, sg_ses (in sg3_utils package); safte-monitor (internet)