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lscss - list channel subsystem devices.

LSCSS(8) System Manager's Manual LSCSS(8)


lscss - list channel subsystem devices.


lscss <options> [RANGE]


The lscss command is used to list all or a subset of devices that are managed by the common I/O subsystem.


Limit output to a range of subchannels by specifying multiple identifiers as a comma-separated list or a range or a combination of both, e.g.
Note that ranges may also be separated by spaces.


Shorten IDs by removing leading "0.0.". Note: only IDs beginning with "0.0." will be displayed in this case.
-t|--devtype <devtype>[/<model>][,...]
For IO subchannels, limit output to devices of the given device type (e.g. 3390).
Indicate that RANGE refers to device identifiers.
Show availability attribute of IO devices.
Show verified path mask. VPM is an internal path mask used by Linux. A channel path can be used by Linux device drivers to do IO if the corresponding bit is set in the VPM. Events that can lead to a channel path not being available include:
The corresponding bit is not set in at least one of the PIM, PAM, or POM masks.
The channel path is varied offline.
Linux received no interrupt to IO using this channel path.
Print the version of the s390-tools package and the command.
Print help text.
Print values using uppercase.
Show IO subchannels. (default)
Show CHSC subchannels.
Show EADM subchannels.
Show subchannels of all types.


List all devices that are managed by the common I/O subsystem.
lscss -t 3390
Same as above but shows only 3390 devices.


In rare situations a device might temporarily not be accessible to the subchannel. Then "none" is displayed as the device identifier and the other device attributes are empty.


This man-page was written by Stefan Bader <>.
New options added by Sebastian Ott <>.


Mar 2009 s390-tools