pvcreate error

[Burak Topal]

Hi,

i get the following message while pvcreate operation.

#pvcreate /dev/rdisk/disk100
pvcreate: IO error on Physical Volume device "/dev/rdisk/disk100"

#pvcreate -f /dev/rdisk/disk100
pvcreate: Error: Couldn't read LVMREC for the physical volume "/dev/rdisk/disk100"

Any help would be aprreciated..

[Torsten.]

What device is providing the storage? Check from array side (permissions, hostmode, etc ...)

[Hiren N Dave]

Hi,

what is the size of this LUN?

Pls share "ioscan -kfnC disk" and "diskinfo -v /dev/rdisk/disk100" outputs.

Also check that the LUN is properly shared from the storage with write permissions. Do this to find out whether it is writtable or not..

#dd if=/stand/vmunix of=/dev/rdisk/disk100 bs=1024k count=100

Also, do

# ioscan -m dsf

To find out related legacy device file and try pvcreate on it, share output.

Cheers...

[Burak Topal]

Hi,

These are the outputs;

#ioscan -fuNC disk
Class     I  H/W Path  Driver         S/W State   H/W Type     Description
===========================================================================
disk      0  0/0/2/1.0x0.0x10  UsbScsiAdaptor   CLAIMED     LUN_PATH     USB SCSI Stack Adaptor
disk      3  64000/0xfa00/0x0  esdisk           CLAIMED     DEVICE       HP      IR Volume
disk      6  64000/0xfa00/0x4  esdisk           CLAIMED     DEVICE       IBM     1815      FAStT
disk      9  64000/0xfa00/0x5  esdisk           CLAIMED     DEVICE       IBM     1815      FAStT
disk     11  64000/0xfa00/0x6  esdisk           CLAIMED     DEVICE       IBM     1815      FAStT
disk    100  64000/0xfa00/0x7  esdisk           CLAIMED     DEVICE       IBM     1815      FAStT

#diskinfo -v /dev/rdisk/disk100
SCSI describe of /dev/rdisk/disk100:
             vendor: IBM    
         product id: 1815      FAStT
               type: direct access
               size: 6291456 Kbytes
   bytes per sector: 512
          rev level: 0914
    blocks per disk: 12582912
        ISO version: 0
       ECMA version: 0
       ANSI version: 5
    removable media: no
    response format: 2
   (Additional inquiry bytes: (32)30 (33)39 (34)31 (35)34 (36)0 (37)0 (38)0 (39)0 (40)0 (41)0 (42)0 (43)0 (44)0 (45)0 (46)0 (47)0 (48)0 (49)0 (50)0 (51)0 (52)0 (53)0 (54)0 (55)0 (56)0 (57)0 (58)0 (59)60 (60)3 (61)0 (62)3 (63)20 (64)9 (65)0 (66)0 (67)0 (68)0 )

#dd if=/stand/vmunix of=/dev/rdisk/disk100 bs=1024k count=100
I/O error
1+0 records in
0+1 records out

#ioscan -m dsf
Persistent DSF           Legacy DSF(s)
========================================
/dev/rdisk/disk100       /dev/rdsk/c1t0d2
                                        /dev/rdsk/c2t0d2

[Hiren N Dave]

>> I/O error

OS is not able to write on this LUN disk....you need to check LUN assignment property from storage end and confirm that read/write permission is given to this LUN.

Regards,

HD

[Torsten.]

Please do

# scsimgr get_info -D /dev/rdisk/disk100

and

# scsimgr get_info all_lpt -D /dev/rdisk/disk100

and post.

[Burak Topal]

@Hiren

i could not find lun's read/write permissions but when i assign disk to another server i can pvcreate on it.

@Torsten

output of commonds;

#scsimgr get_info -D /dev/rdisk/disk100

        STATUS INFORMATION FOR LUN : /dev/rdisk/disk100

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)                  = 0x600a0b800047683200001f824e30fdb3
Serial number                                 = "SP82882846      "
Vendor id                                     = "IBM     "
Product id                                    = "1815      FAStT "
Product revision                              = "0914"
Other properties                              = ""
SPC protocol revision                         = 5
Open count (includes chr/blk/pass-thru/class) = 0
Raw open count (includes class/pass-thru)     = 0
Pass-thru opens                               = 0
LUN path count                                = 2
Active LUN paths                              = 2
Standby LUN paths                             = 0
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                               = NA
Asymmetric logical unit access supported      = No
Asymmetric states supported                   = NA
Preferred paths reported by device            = No
Preferred LUN paths                           = 0

Driver esdisk Status Information :

Capacity in number of blocks                      = 12582912
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
gulercan:/#scsimgr get_info all_lpt -D /dev/rdisk/disk100

        STATUS INFORMATION FOR LUN PATH : lunpath8

Generic Status Information

SCSI services internal state                  = UNOPEN
Open close state                              = ACTIVE
Protocol                                      = fibre_channel
EVPD page 0x83 description code               = 1
EVPD page 0x83 description association        = 0
EVPD page 0x83 description type               = 3
World Wide Identifier (WWID)                  = 0x600a0b800047683200001f824e30fdb3
Total number of Outstanding I/Os              = 0
Maximum I/O timeout in seconds                = 30
Maximum I/O size allowed                      = 2097152
Maximum number of active I/Os allowed         = 8
Maximum queue depth                           = 8
Queue full delay count                        = 0
Asymmetric state                              = NA
Device preferred path                         = No
Relative target port identifier               = 32772
Target port group identifier                  = NA

        STATUS INFORMATION FOR LUN PATH : lunpath10

Generic Status Information

SCSI services internal state                  = UNOPEN
Open close state                              = ACTIVE
Protocol                                      = fibre_channel
EVPD page 0x83 description code               = 1
EVPD page 0x83 description association        = 0
EVPD page 0x83 description type               = 3
World Wide Identifier (WWID)                  = 0x600a0b800047683200001f824e30fdb3
Total number of Outstanding I/Os              = 0
Maximum I/O timeout in seconds                = 30
Maximum I/O size allowed                      = 2097152
Maximum number of active I/Os allowed         = 8
Maximum queue depth                           = 8
Queue full delay count                        = 0
Asymmetric state                              = NA
Device preferred path                         = No
Relative target port identifier               = 1
Target port group identifier                  = NA

[Torsten.]

Are you sure your array is active/active and the LUN is configured for HP-UX system???

[Torsten.]

Try also this:

# scsimgr get_attr -C lunpath -I 8 -a lunid

[Burak Topal]

#scsimgr get_attr -C lunpath -I 8 -a lunid

        SCSI ATTRIBUTES FOR LUN PATH : lunpath8

name = lunid
current =0x2000000000000 (LUN # 2, Peripheral Addressing)
default =
saved =

[Torsten.]

I'm quite sure the array is not configured for access by HP-UX systems - ask your storage admins how to correct this on the array side!

[RG07756]

try to type following command

insf -e

Try to create pvcreate

[Torsten.]

The array has the wrong host mode configured, so you can do NOTHING from the host side to change this.

[Steven E. Protter]

Shalom,

Based on an end to end read of this thread, my conclusion is that though the disk is visible to the system, it is not properly presented to the system

I agree with the conclusion that it is an array problem and can not be resolved on the OS level.

SEP

[chris huys_4]

what is the exact model of this diskarray ?

> i could not find lun's read/write permissions but when i assign disk to another server i can pvcreate on it.

Another server running hp-ux 11iv3 ?

[Torsten.]

Do the same "scsimgr" commands on a working system and compare the output. Do you see "flat addressing" related to the LUN?