Reg: SCSI
Quoted 7 lines · Chennai
In my project while reading/writing the data in to scsi disk, I need to block the device using RESERVE UNIT and RELEASE UNIT. Can any one help me how to send SCSI command to SCSI device. I know that this can be done under user level using SCSI generic interface. I required function in kernel version 2.4.2. level.
See:
http://www.linuxdoc.org/HOWTO/SCSI-Generic-HOWTO/
To break reservations from a crippled SCSI initiator, the other initiator needs access to a SCSI bus reset. Even though the sg driver supports this, the SCSI mid-level support is missing in the standard lk 2.4 series. Many distributions have the required patch (from James Bottomley) that makes SCSI bus reset functional.
That SCSI bus reset mid-level patch for the lk 2.5 series will be heading in Jens's direction shortly.
Doug Gilbert