Device file name changed

[Gurumanickam]

Hi all,

I have a HP-UX box having two fibre channel adapter(second is for redundancy) both are connected with xp12k storage thru san switch.
When i do vgdisplay -v vgdata3 it's giving the following error

Cur LV 1
Open LV 1
Max PV 16
Cur PV 8
Act PV 8
Max PE per PV 4912
VGDA 16
PE Size (Mbytes) 4
Total PE 39288
Alloc PE 39288
Free PE 0
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d3":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d4":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d5":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d6":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/vgdata3/lvol1
LV Status available/syncd
LV Size (Mbytes) 157152
Current LE 39288
Allocated PE 39288
Used PV 8


--- Physical volumes ---
PV Name /dev/dsk/c28t2d0
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d3":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c26t2d4":

output of ioscan is not at all showing the device file name "/dev/dsk/c26t2d4":Im attaching the output of ioscan, lvmtab and vgdisplay with this thread. what might be the problem. how my device file name changed and help me to make my alternate link enable.

[Peter Godron]

Hi,
please have a look at:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1043831

I would suspect the controller

[Torsten.]

Hi,

did something cange? Is the cable connected to another switch port for example?

You have device files like

disk 326 1/0/12/1/0/4/0.3.15.0.0.2.4 sdisk CLAIMED DEVICE HP
OPEN-V

in your ioscan. I assume you have "old" device files like "/dev/dsk/c26t2d4" in the /dev/dsk directory.

What gives "vgscan -p"?