Messages in this thread | | | Date | Fri, 04 Jan 2002 20:43:59 -0500 | From | Douglas Gilbert <> | Subject | Re: Reg: SCSI |
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Eshwar D - CTD, Chennai wrote:
> 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.
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