status of the lun presented

[madhudeepan]

when i check for dual paths for all the luns presented in the unix server i am getting below output for some luns.

command is : scsimgr -v lun_map -D /dev/rdisk/disk513

OUTPUT:

-------------------------------------------------------
/dev/rdisk/disk513
-------------------------------------------------------

LUN PATH INFORMATION FOR LUN : /dev/rdisk/disk513

Total number of LUN paths = 8
World Wide Identifier(WWID) = 0x600508b40009731a0001400008980000

LUN path : lunpath363
Class = lunpath
Instance = 363
Hardware path = 0/0/12/1/0/4/0.0x50001fe1500ea588.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = ACTIVE

LUN path : lunpath362
Class = lunpath
Instance = 362
Hardware path = 0/0/12/1/0/4/0.0x50001fe1500ea589.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = ACTIVE

LUN path : lunpath364
Class = lunpath
Instance = 364
Hardware path = 0/0/12/1/0/4/0.0x50001fe1500ea58c.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = STANDBY

LUN path : lunpath365
Class = lunpath
Instance = 365
Hardware path = 0/0/12/1/0/4/0.0x50001fe1500ea58d.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = STANDBY

LUN path : lunpath360
Class = lunpath
Instance = 360
Hardware path = 0/0/12/1/0/4/1.0x50001fe1500ea58b.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = ACTIVE

LUN path : lunpath361
Class = lunpath
Instance = 361
Hardware path = 0/0/12/1/0/4/1.0x50001fe1500ea58e.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = STANDBY

LUN path : lunpath366
Class = lunpath
Instance = 366
Hardware path = 0/0/12/1/0/4/1.0x50001fe1500ea58a.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = ACTIVE

LUN path : lunpath367
Class = lunpath
Instance = 367
Hardware path = 0/0/12/1/0/4/1.0x50001fe1500ea58f.0x4021000000000000
SCSI transport protocol = fibre_channel
State = UNOPEN
Last Open or Close state = STANDBY

--------------------------------------------------- is there any impact for this lun.

[Prasanth Thomas]

Hi,

As i can see total 8 paths are present and 4 is active and 4 is standby, beacuse in EVA there are 2 controllers and one should be active and another should be standby (it is for redundancy purpose). There for you can see only 4 paths will be in actice mode, if it failed then the stanby status will change to active.
I think everything clear now. Please let me know if have any issues.

Regards,
Prasanth Thomas.

[madhudeepan]

state is unopen mode....

what does it meant to???

[Prasanth Thomas]

Hi,
Please send me the output of the below command. Is this LUN is a part of any VG ?
And only disk513 is having the issue or all the LUNs have the issue.

scsimgr get_info -D /dev/rdisk/disk513.

Regards,
Prasanth Thomas.

[madhudeepan]

PFA OUTPUT for the command : scsimgr get_info -D /dev/rdisk/disk513

################################################################

STATUS INFORMATION FOR LUN : /dev/rdisk/disk513

Generic Status Information

SCSI services internal state = UNOPEN
Device type = Direct_Access
EVPD page 0x83 description code = 1
EVPD page 0x83 description association = 0
EVPD page 0x83 description type = 3
World Wide Identifier (WWID) = 0x600508b40009731a0001400008980000
Serial number = "PBA23F29SVY02E"
Vendor id = "HP "
Product id = "HSV210 "
Product revision = "6200"
Other properties = ""
SPC protocol revision = 2
Open count (includes chr/blk/pass-thru/class) = 0
Raw open count (includes class/pass-thru) = 0
Pass-thru opens = 0
LUN path count = 8
Active LUN paths = 4
Standby LUN paths = 4
Failed LUN paths = 0
Maximum I/O size allowed = 2097152
Preferred I/O size = 2097152
Outstanding I/Os = 0
I/O load balance policy = round_robin
Path fail threshold time period = 0
Transient time period = 120
Tracing buffer size = 1024
LUN Path used when policy is path_lockdown = NA
LUN access type = T10 Asymmetric Active-Active
Asymmetric logical unit access supported = Both implicit and explicit
Asymmetric states supported = ao_sup, an_sup
Preferred paths reported by device = No
Preferred LUN paths = 0

Driver esdisk Status Information :

Capacity in number of blocks = 209715200
Block size in bytes = 512
Number of active IOs = 0
Special properties =
Maximum number of IO retries = 45
IO transfer timeout in secs = 30
FORMAT command timeout in secs = 86400
START UNIT command timeout in secs = 60
Timeout in secs before starting failing IO = 120
IO infinite retries = false