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CONFIG_SCSI_MULTI_LUN: Probe all LUNs on each SCSI device

General informations

The Linux kernel configuration item CONFIG_SCSI_MULTI_LUN has multiple definitions:

Probe all LUNs on each SCSI device found in drivers/scsi/Kconfig

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

Some devices support more than one LUN (Logical Unit Number) in order to allow access to several media, e.g. CD jukebox, USB card reader, mobile phone in mass storage mode. This option forces the kernel to probe for all LUNs by default. This setting can be overridden by max_luns boot/module parameter. Note that this option does not affect devices conforming to SCSI-3 or higher as they can explicitly report their number of LUNs. It is safe to say Y here unless you have one of those rare devices which reacts in an unexpected way when probed for multiple LUNs.

Probe all LUNs on each SCSI device found in arch/um/Kconfig.scsi

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

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Probe all LUNs on each SCSI device found in arch/um/Kconfig_scsi

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

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Probe all LUNs on each SCSI device found in arch/sparc64/Kconfig

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

If you have a SCSI device that supports more than one LUN (Logical Unit Number), e.g. a CD jukebox, and only one LUN is detected, you can say Y here to force the SCSI driver to probe for multiple LUNs. A SCSI device with multiple LUNs acts logically like multiple SCSI devices. The vast majority of SCSI devices have only one LUN, and so most people can say N here and should in fact do so, because it is safer.

Probe all LUNs on each SCSI device found in arch/sparc/Kconfig

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

If you have a SCSI device that supports more than one LUN (Logical Unit Number), e.g. a CD jukebox, and only one LUN is detected, you can say Y here to force the SCSI driver to probe for multiple LUNs. A SCSI device with multiple LUNs acts logically like multiple SCSI devices. The vast majority of SCSI devices have only one LUN, and so most people can say N here and should in fact do so, because it is safer.

Probe all LUNs on each SCSI device found in arch/m68k/Kconfig

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

If you have a SCSI device that supports more than one LUN (Logical Unit Number), e.g. a CD jukebox, and only one LUN is detected, you can say Y here to force the SCSI driver to probe for multiple LUNs. A SCSI device with multiple LUNs acts logically like multiple SCSI devices. The vast majority of SCSI devices have only one LUN, and so most people can say N here and should in fact do so, because it is safer.

Probe all LUNs on each SCSI device found in arch/parisc/Kconfig

The configuration item CONFIG_SCSI_MULTI_LUN:

Help text

If you have a SCSI device that supports more than one LUN (Logical Unit Number), e.g. a CD jukebox, and only one LUN is detected, you can say Y here to force the SCSI driver to probe for multiple LUNs. A SCSI device with multiple LUNs acts logically like multiple SCSI devices. The vast majority of SCSI devices have only one LUN, and so most people can say N here and should in fact do so, because it is safer.

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