10-25-2012
Yes!
Actually, there's an answer in the "similar posts" section at the bottom of the page, as you read this.
Detect the lun
(it's post 4. You just need to know which SCSI bus the disk is on)
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LEARN ABOUT PHP
tran_reset
tran_reset(9E) Driver Entry Points tran_reset(9E)
NAME
tran_reset - reset a SCSI bus or target
SYNOPSIS
#include <sys/scsi/scsi.h>
int prefixtran_reset(struct scsi_address *ap, int level);
INTERFACE LEVEL
Solaris architecture specific (Solaris DDI).
PARAMETERS
ap Pointer to the scsi_address(9S) structure.
level The level of reset required.
DESCRIPTION
The tran_reset() vector in the scsi_hba_tran(9S) structure must be initialized during the HBA driver's attach(9E) to point to an HBA entry
point to be called when a target driver calls scsi_reset(9F).
tran_reset() must reset either the SCSI bus, a SCSI target device, or a SCSI logical unit as specified by level.
level must be one of the following:
RESET_ALL Reset the SCSI bus.
RESET_TARGET Reset the target specified by ap.
RESET_LUN Reset the logical unit specified by ap.
tran_reset should set the pkt_reason field of all outstanding packets in the transport layer associated with each target or logical unit
that was successfully reset to CMD_RESET and the pkt_statistics field must be OR'ed with either STAT_BUS_RESET (if the SCSI bus was reset)
or STAT_DEV_RESET (if the target or logical unit was reset).
The HBA driver should use a SCSI Bus Device Reset Message to reset a target device. The HBA driver should use a SCSI Logical Unit Reset
Message to reset a logical unit.
Packets that are in the transport layer but not yet active on the bus should be returned with pkt_reason set to CMD_RESET and pkt_statis-
tics OR'ed with STAT_ABORTED.
Support for RESET_LUN is optional but strongly encouraged for new and updated HBA drivers. If an HBA driver provides RESET_LUN support, it
must also create the lun-reset capability with a value of zero for each target device instance represented by a valid ap. The HBA is also
required to provide the means to return the current value of the lun-reset capability in its tran_getcap(9E) routine, as well as the means
to change the value of the lun_reset capability in its tran_setcap(9E) routine.
RETURN VALUES
tran_reset() should return:
1 on success.
0 on failure.
SEE ALSO
attach(9E), ddi_dma_buf_setup(9F), scsi_hba_attach(9F), scsi_reset(9F), scsi_address(9S), scsi_hba_tran(9S)
Writing Device Drivers
NOTES
If pkt_reason already indicates that an earlier error had occurred for a particular pkt, tran_reset() should not overwrite pkt_reason with
CMD_RESET.
SunOS 5.10 12 Jul 2002 tran_reset(9E)