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Diffstat (limited to 'Documentation/scsi/st.txt')
| -rw-r--r-- | Documentation/scsi/st.txt | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Documentation/scsi/st.txt b/Documentation/scsi/st.txt index b7be95b5bd24..40752602c050 100644 --- a/Documentation/scsi/st.txt +++ b/Documentation/scsi/st.txt @@ -2,7 +2,7 @@ This file contains brief information about the SCSI tape driver. The driver is currently maintained by Kai Mäkisara (email Kai.Makisara@kolumbus.fi) -Last modified: Mon Mar 7 21:14:44 2005 by kai.makisara +Last modified: Sun Feb 24 21:59:07 2008 by kai.makisara BASICS @@ -133,6 +133,11 @@ the defaults set by the user. The value -1 means the default is not set. The file 'dev' contains the device numbers corresponding to this device. The links 'device' and 'driver' point to the SCSI device and driver entries. +Each directory also contains the entry 'options' which shows the currently +enabled driver and mode options. The value in the file is a bit mask where the +bit definitions are the same as those used with MTSETDRVBUFFER in setting the +options. + A link named 'tape' is made from the SCSI device directory to the class directory corresponding to the mode 0 auto-rewind device (e.g., st0). @@ -372,6 +377,11 @@ MTSETDRVBUFFER MT_ST_SYSV sets the SYSV semantics (mode) MT_ST_NOWAIT enables immediate mode (i.e., don't wait for the command to finish) for some commands (e.g., rewind) + MT_ST_SILI enables setting the SILI bit in SCSI commands when + reading in variable block mode to enhance performance when + reading blocks shorter than the byte count; set this only + if you are sure that the drive supports SILI and the HBA + correctly returns transfer residuals MT_ST_DEBUGGING debugging (global; debugging must be compiled into the driver) MT_ST_SETBOOLEANS |