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mpioutil(1) [osx man page]

mpioutil(1)						    BSD General Commands Manual 					       mpioutil(1)

mpioutil -- Tool for configuring paths to multipathed logical units. SYNOPSIS
mpioutil verb direct-object arguments DESCRIPTION
mpioutil is a utility to manage multiple paths to a SCSI Logical Unit. VERBS, DIRECT OBJECTS, AND SPECIFIC ARGUMENTS list Lists all multipathed logical units. info -i <lun identifier> Get information on a multipathed logical unit. The -i flag may also be expressed as --id. modify lun -i <lun identifier> -a <load balancing algorithm> -b <round robin batch count> Modify a logical unit. The -i, -a, -b flags may also be expressed as --id, --algorithm, and --batchCount respectively. modify path -l <lun identifier> -i <path identifier> -e | -d Modify a path on a logical unit. The -l, -i, -e, and -d flags may also be expressed as --lun, --id, --enable, and --disable respec- tively. EXAMPLES
mpioutil list Lists all multipathed logical units. mpioutil info --id 22F2000155A508ED Get information for a multipathed lun with id 22F2000155A508ED. mpioutil modify lun --id 22F2000155A508ED --algorithm RoundRobin --batchCount 16 Modify a multipathed lun's algorithm to be RoundRobin with a batch count of 16. mpioutil modify lun --id 22F2000155A508ED --algorithm LeastIO Modify a multipathed lun's algorithm to be LeastIO. mpioutil modify path --lun 22F2000155A508ED --id 26010001553560BF00000001 --disable Disable a path that belongs to a multipathed logical unit. Darwin June 2, 2019 Darwin

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tran_reset(9E)							Driver Entry Points						    tran_reset(9E)

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)
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