All LUNs reporting being in a degraded state

[Pedro Cirne]

Hi,

I've just installed 11iv3 update 5 on a rp7420 box connected to a Clariion CX3-20.

I've started SMH and all the LUNs have a "minor" alarm, they are all in a "degraded state" but I can't find the cause for this alarm:

root@porsx022:/# /opt/propplus/bin/cprop -detail -c "Disk Drive"|more

[Component]: Disk Drive
[Table]: Disk Drive
-------------------------------------------------------
[Instance]: 1
****************************************************
[Hash ID]: Disk Drive:112571928
< ClassName:HP_DiskDrive NameSpace:root/cimv2 >
[Caption]: SCSI Disk
[Description]: This is a Disk with following details: Vendor ID: HP 73.4G SCSI Disk Product ID: MAX3073NC@1/0/0/3/0.6.0
[ElementName]: Hard Disk
[Name]: Hard Disk
[OperationalStatus]: 2
[StatusDescriptions]: The status of the disk is ok
[EnabledState]: Not Applicable
[RequestedState]: No Change
[EnabledDefault]: Enabled
[SystemCreationClassName]: CIM_ComputerSystem
[SystemName]: porsx022
[CreationClassName]: HP_DiskDrive
[DeviceID]: 1/0/0/3/0.6.0
[MaxMediaSize]: 71687168
[DefaultBlockSize]: 512
[LegacyHardwarePath]: 1/0/0/3/0.6.0
[AgileHardwarePath]: 64000/0xfa00/0x0
[SerialNumber]: X1025532 0629
[ProductId]: MAX3073NC
[VendorId]: HP 73.4G
[DiskFWRevision]: HPC1
[Capacity]: 68.0
****************************************************
[Instance]: 2
****************************************************
[Hash ID]: Disk Drive:826154513
< ClassName:HP_DiskDrive NameSpace:root/cimv2 >
[Caption]: SCSI Disk
[Description]: This is a Disk with following details: Vendor ID: DGC SCSI Disk Product ID: CX3-20WDR5@1/0/14/1/0.8.0.0.0.0.0
[ElementName]: Hard Disk
[Name]: Hard Disk
[OperationalStatus]: 3
[StatusDescriptions]: The disk is in degraded state
[EnabledState]: Not Applicable
[RequestedState]: No Change
[EnabledDefault]: Enabled
[SystemCreationClassName]: CIM_ComputerSystem
[SystemName]: porsx022
[CreationClassName]: HP_DiskDrive
[DeviceID]: 1/0/14/1/0.8.0.0.0.0.0
[MaxMediaSize]: 157286400
[DefaultBlockSize]: 512
[LegacyHardwarePath]: 1/0/14/1/0.8.0.0.0.0.0
[AgileHardwarePath]: 64000/0xfa00/0x4
[SerialNumber]: CK200063700776
[ProductId]: CX3-20WDR5
[VendorId]: DGC
[DiskFWRevision]: HP03
[Capacity]: 150.0
****************************************************
[Instance]: 3
****************************************************
[Hash ID]: Disk Drive:2203307906
< ClassName:HP_DiskDrive NameSpace:root/cimv2 >
[Caption]: SCSI Disk
[Description]: This is a Disk with following details: Vendor ID: DGC SCSI Disk Product ID: CX3-20WDR5@1/0/14/1/0.8.0.0.0.0.1
[ElementName]: Hard Disk
[Name]: Hard Disk
[OperationalStatus]: 3
[StatusDescriptions]: The disk is in degraded state
[EnabledState]: Not Applicable
[RequestedState]: No Change
[EnabledDefault]: Enabled
[SystemCreationClassName]: CIM_ComputerSystem
[SystemName]: porsx022
[CreationClassName]: HP_DiskDrive
[DeviceID]: 1/0/14/1/0.8.0.0.0.0.1
[MaxMediaSize]: 157286400
[DefaultBlockSize]: 512
[LegacyHardwarePath]: 1/0/14/1/0.8.0.0.0.0.1
[AgileHardwarePath]: 64000/0xfa00/0x5
[SerialNumber]: CK200063700776
[ProductId]: CX3-20WDR5
[VendorId]: DGC
[DiskFWRevision]: HP03
[Capacity]: 150.0
****************************************************
[Instance]: 4
****************************************************
[Hash ID]: Disk Drive:3580461299
< ClassName:HP_DiskDrive NameSpace:root/cimv2 >
[Caption]: SCSI Disk
[Description]: This is a Disk with following details: Vendor ID: DGC SCSI Disk Product ID: CX3-20WDR5@1/0/14/1/0.8.0.0.0.0.2
[ElementName]: Hard Disk
[Name]: Hard Disk
[OperationalStatus]: 3
[StatusDescriptions]: The disk is in degraded state
[EnabledState]: Not Applicable
[RequestedState]: No Change
[EnabledDefault]: Enabled
[SystemCreationClassName]: CIM_ComputerSystem
[SystemName]: porsx022
[CreationClassName]: HP_DiskDrive
[DeviceID]: 1/0/14/1/0.8.0.0.0.0.2
[MaxMediaSize]: 157286400
[DefaultBlockSize]: 512
[LegacyHardwarePath]: 1/0/14/1/0.8.0.0.0.0.2
[AgileHardwarePath]: 64000/0xfa00/0x6
[SerialNumber]: CK200063700776
[ProductId]: CX3-20WDR5
[VendorId]: DGC
[DiskFWRevision]: HP03
[Capacity]: 150.0
****************************************************

I've checked syslog for errors but didn't find anything relevant...all LUNs are "CLAIMED" when I run ioscan:

root@porsx022:/# ioscan -N -fnCdisk|more
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 64 64000/0xfa00/0x0 esdisk CLAIMED DEVICE HP 73.4GMAX3073NC
/dev/disk/disk64 /dev/rdisk/disk64
disk 65 64000/0xfa00/0x1 esdisk CLAIMED DEVICE _NEC DVD_RW ND-3550A
/dev/disk/disk65 /dev/rdisk/disk65
disk 66 64000/0xfa00/0x4 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk66 /dev/rdisk/disk66
disk 67 64000/0xfa00/0x5 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk67 /dev/rdisk/disk67
disk 68 64000/0xfa00/0x6 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk68 /dev/rdisk/disk68
disk 69 64000/0xfa00/0x7 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk69 /dev/rdisk/disk69
disk 70 64000/0xfa00/0x8 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk70 /dev/rdisk/disk70
disk 71 64000/0xfa00/0x9 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk71 /dev/rdisk/disk71
disk 72 64000/0xfa00/0xa esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk72 /dev/rdisk/disk72
disk 73 64000/0xfa00/0xb esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk73 /dev/rdisk/disk73
disk 74 64000/0xfa00/0xc esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk74 /dev/rdisk/disk74
disk 75 64000/0xfa00/0xd esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk75 /dev/rdisk/disk75
disk 76 64000/0xfa00/0xe esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk76 /dev/rdisk/disk76
disk 77 64000/0xfa00/0xf esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk77 /dev/rdisk/disk77
disk 78 64000/0xfa00/0x10 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk78 /dev/rdisk/disk78
disk 79 64000/0xfa00/0x11 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk79 /dev/rdisk/disk79
disk 80 64000/0xfa00/0x12 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk80 /dev/rdisk/disk80
disk 81 64000/0xfa00/0x13 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk81 /dev/rdisk/disk81
disk 82 64000/0xfa00/0x14 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk82 /dev/rdisk/disk82
disk 83 64000/0xfa00/0x15 esdisk CLAIMED DEVICE DGC CX3-20WDR5
/dev/disk/disk83 /dev/rdisk/disk83
disk 84 64000/0xfa00/0x16 esdisk CLAIMED DEVICE DGC CX3-20WDR5


Any ideias where I should look for the root cause of this "degraded state"?

Thank you!

[Duncan Edmonstone]

- is the Clariion on at least FLARE26?

- are all the LUNs presented to HP-UX 11.31 system configured in failover mode 4 (ALUA)

Those are what most folks get wrong when attaching HP-UX 11.31 systems to Clariion

HTH

Duncan

[Pedro Cirne]

Hi Duncan,

-Yes, the flare was just upgraded to FL26.

-How can I check if the LUNs are configured in "failover" mode? Is this the only option or can I have "load balancig" between HBAs?

Thanks!

Pedro

[Michal Kapalka (mikap)]

hi,

check this command : scsimgr

mikap

[Duncan Edmonstone]

>> How can I check if the LUNs are configured in "failover" mode? Is this the only option or can I have "load balancig" between HBAs?

This is not a HP-UX setting - its a setting on the Clariion for the LUNs - I don't know how you check it... I suggest you consult the HP-UX connectivity guide from EMC...

The Clarrion is an ALUA (Asymmetric Logical Unit Access) array, and a s such each LUN is generally accessed through only the ports on one controller at any one time - different LUNs might be accessed via differemt controllers, but all IOs afor any given LUN are serviced by only 1 contoller at a time...

HTH

Duncan

[Pedro Cirne]

Hi,

From the HP-UX side I've checked the settings:

root@porsx022:/tmp# scsimgr get_attr -D /dev/rdisk/disk96

Driver esdisk Attributes :

name = capacity
current = 1214624768
default =
saved =

name = block_size
current = 512
default =
saved =

name = path_fail_secs
current = 120
default = 120
saved =

name = load_bal_policy
current = round_robin
default = round_robin
saved =

name = infinite_retries_enable
current = false
default = false
saved =

name = preferred_path
current =
default =
saved =

name = alua_enabled
current = true
default = true
saved =

This last line means that the ALUA is enabled on the CX3-20 or this is just the setup from the OS side?

Thanks!

Pedro

[Michal Kapalka (mikap)]

hi,

if its a clarion setting, so you should conneccdt to the storage processor of the clariion and them change it.

mikap

[Robert Cook_6]

I'm having the same issue on 11.31, SMH v3.0.2 except the storage is IBM Shark. Is there a problem or is there a reporting problem?

Thanks,

Bob

[Sameer_Nirmal]

I think the "degraded status" is the result of EMS disk monitor's wrong reporting(eventl.log). The EMS disk monitor is treating the Clariion LUNs as generic HP disk drives. Since they are not, the assessment of the monitor will be wrong and thus reporting. That been said, the EMS disk monitor doesn't support Clariion array or IBM array. It only supports DS2500, MSA 30/60/70, MSA 1000/1500 and Stand-alone HP disks


There were patches for EMS on earlier versions of HP-UX to avoid this reporting. A workaround is to disable monitoring of those Clariion LUNs.