MLY(4) | Device Drivers Manual | MLY(4)

# NAME

`mly` — Mylex AcceleRAID/eXtremeRAID family driver

# SYNOPSIS

`mly* at pci? dev ? function ?`
`scsibus* at mly?`

# DESCRIPTION

The `mly` driver provides support for Mylex AcceleRAID and eXtremeRAID family of PCI to SCSI RAID controllers with version 6.00 and later firmware. Supported controllers include:

- AcceleRAID 160
- AcceleRAID 170
- AcceleRAID 352
- eXtremeRAID 2000
- eXtremeRAID 3000

Compatible Mylex controllers not listed should work, but have not been tested.

Logical devices (disk arrays) attached to the controller are presented to the SCSI subsystem as though they were direct-access devices on a virtual SCSI bus. Physical devices which are not claimed by a logical device are presented on SCSI channels which match the physical channels on the controller.

The results of the SCSI ``INQUIRY'' command from logical devices are overwritten with status information by the `mly` driver. The vendor field is the string ``MYLEX'', the product field indicates the type of logical device, and the revision field contains a four letter status code. The possible status codes and their meanings are as follows:

OFLN
  offline
UNCF
  unconfigured
ONLN
  online - optimal
CRIT
  critical - one or more disks in the array has failed
NORD
  write only
STBY
  standby
MISS
  missing

# DIAGNOSTICS

## Controller initialization phase

mly%d: controller initialization started
mly%d: initialization complete

  The controller firmware has started initialization. Normally this process is performed by the controller BIOS, but the driver may need to do this in cases where the BIOS has failed, or is not compatible (e.g. on non-x86 systems).

mly%d: drive spinup in progress

  Drive startup is in progress; this may take several minutes.

mly%d: mirror race recovery failed, one or more drives offline
mly%d: mirror race recovery in progress
mly%d: mirror race recovery on a critical drive

  These error codes are undocumented.

mly%d: FATAL MEMORY PARITY ERROR

  Firmware detected a fatal memory error; the driver will not attempt to attach to this controller.

mly%d: unknown initialization code %x

  An unknown error occurred during initialization; it will be ignored.

## Operational diagnostics

mly%d: physical device %d:%d online
mly%d: physical device %d:%d standby
mly%d: physical device %d:%d automatic rebuild started
mly%d: physical device %d:%d manual rebuild started
mly%d: physical device %d:%d rebuild completed
mly%d: physical device %d:%d rebuild cancelled
mly%d: physical device %d:%d rebuild failed for unknown reasons
mly%d: physical device %d:%d rebuild failed due to new physical device
mly%d: physical device %d:%d rebuild failed due to logical drive failure
mly%d: physical device %d:%d found
mly%d: physical device %d:%d gone
mly%d: physical device %d:%d unconfigured
mly%d: physical device %d:%d expand capacity started
mly%d: physical device %d:%d expand capacity completed
mly%d: physical device %d:%d expand capacity failed
mly%d: physical device %d:%d parity error
mly%d: physical device %d:%d soft error
mly%d: physical device %d:%d miscellaneous error
mly%d: physical device %d:%d reset
mly%d: physical device %d:%d active spare found
mly%d: physical device %d:%d warm spare found
mly%d: physical device %d:%d initialization started
mly%d: physical device %d:%d initialization completed
mly%d: physical device %d:%d initialization failed
mly%d: physical device %d:%d initialization cancelled
mly%d: physical device %d:%d write recovery failed
mly%d: physical device %d:%d scsi bus reset failed
mly%d: physical device %d:%d double check condition
mly%d: physical device %d:%d device cannot be accessed
mly%d: physical device %d:%d gross error on scsi processor
mly%d: physical device %d:%d bad tag from device
mly%d: physical device %d:%d command timeout
mly%d: physical device %d:%d system reset
mly%d: physical device %d:%d busy status or parity error
mly%d: physical device %d:%d host set device to failed state
mly%d: physical device %d:%d selection timeout
mly%d: physical device %d:%d scsi bus phase error
mly%d: physical device %d:%d device returned unknown status
mly%d: physical device %d:%d device not ready
mly%d: physical device %d:%d device not found at startup
mly%d: physical device %d:%d COD write operation failed
mly%d: physical device %d:%d BDT write operation failed
mly%d: physical device %d:%d missing at startup
mly%d: physical device %d:%d start rebuild failed due to physical drive too small
mly%d: physical device %d:%d sense data received
mly%d: sense key %d asc %02x ascq %02x
mly%d: info %4D csi %4D
mly%d: physical device %d:%d offline
mly%d: sense key %d asc %02x ascq %02x
mly%d: info %4D csi %4D

  The reported event refers to the physical device at the given channel:target address.

mly%d: logical device %d:%d consistency check started
mly%d: logical device %d:%d consistency check completed
mly%d: logical device %d:%d consistency check cancelled
mly%d: logical device %d:%d consistency check completed with errors
mly%d: logical device %d:%d consistency check failed due to logical drive failure
mly%d: logical device %d:%d consistency check failed due to physical device failure
mly%d: logical device %d:%d automatic rebuild started
mly%d: logical device %d:%d manual rebuild started
mly%d: logical device %d:%d rebuild completed
mly%d: logical device %d:%d rebuild cancelled
mly%d: logical device %d:%d rebuild failed for unknown reasons
mly%d: logical device %d:%d rebuild failed due to new physical device
mly%d: logical device %d:%d rebuild failed due to logical drive failure
mly%d: logical device %d:%d offline
mly%d: logical device %d:%d critical
mly%d: logical device %d:%d online
mly%d: logical device %d:%d initialization started
mly%d: logical device %d:%d initialization completed
mly%d: logical device %d:%d initialization cancelled
mly%d: logical device %d:%d initialization failed
mly%d: logical device %d:%d found
mly%d: logical device %d:%d gone
mly%d: logical device %d:%d expand capacity started
mly%d: logical device %d:%d expand capacity completed
mly%d: logical device %d:%d expand capacity failed
mly%d: logical device %d:%d bad block found
mly%d: logical device %d:%d size changed
mly%d: logical device %d:%d type changed
mly%d: logical device %d:%d bad data block found
mly%d: logical device %d:%d read of data block in bdt
mly%d: logical device %d:%d write back data for disk block lost

  The reported event refers to the logical device at the given channel:target address.

mly%d: enclosure %d fan %d failed
mly%d: enclosure %d fan %d ok
mly%d: enclosure %d fan %d not present
mly%d: enclosure %d power supply %d failed
mly%d: enclosure %d power supply %d ok
mly%d: enclosure %d power supply %d not present
mly%d: enclosure %d temperature sensor %d failed
mly%d: enclosure %d temperature sensor %d critical
mly%d: enclosure %d temperature sensor %d ok
mly%d: enclosure %d temperature sensor %d not present
mly%d: enclosure %d unit %d access critical
mly%d: enclosure %d unit %d access ok
mly%d: enclosure %d unit %d access offline

  These events refer to external enclosures by number. The driver does not attempt to name the enclosures.

mly%d: controller cache write back error
mly%d: controller battery backup unit found
mly%d: controller battery backup unit charge level low
mly%d: controller battery backup unit charge level ok
mly%d: controller installation aborted
mly%d: controller mirror race recovery in progress
mly%d: controller mirror race on critical drive
mly%d: controller memory soft ecc error
mly%d: controller memory hard ecc error
mly%d: controller battery backup unit failed

  These events report controller status changes.

# SEE ALSO

cd(4), ch(4), intro(4), mlx(4), scsi(4), sd(4), st(4), scsictl(8)

# HISTORY

The `mly` driver first appeared in NetBSD 1.6, and was based on the FreeBSD driver of the same name.

# BUGS

The `mly` driver currently assumes that all busses support at most 16 targets and 1 logical unit per target.

Enclosures are not named or otherwise identified in event messages.

The transfer speed for devices is always reported to the kernel as 20MHz.

July 29, 2001 | NetBSD 11.99