topic Re: HPUX/EVA 6000 in Operating System - HP-UX

HPUX/EVA 6000

Greg Hutchins — Thu, 18 Dec 2008 14:43:20 GMT

We have an rp5470 connected to an EVA6000 with 10 disks presented to the OS using the native multipathing so that each disk shows up with 4 paths. Recently, we have moved one of the EVA's controllers fiber connection to a new switch which has caused the paths on the Host systems to change. Our AIX/Linux boxes seemed to handle the new paths with a reboot. However, we are having a problem with HP-UX 11.11. I tried a vgreduce/vgextend to add the new paths in with no luck. Thew paths are recognized with ioscan but am having problems updating the vg's. Any ideas? Sorry if this sounds confusing.

pds [/root]# vgdisplay -v vg02
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Volume groups ---
VG Name /dev/vg02
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 4
Act PV 4
Max PE per PV 12799
VGDA 8
PE Size (Mbytes) 4
Total PE 51188
Alloc PE 51188
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/c15t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c15t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.

ioscan -funC disk (new paths)
/dev/dsk/c25t0d7 /dev/rdsk/c25t0d7
disk 60 0/8/0/0.12.13.0.0.1.0 sdisk CLAIMED DEVICE HP H0
/dev/dsk/c25t1d0 /dev/rdsk/c25t1d0
disk 61 0/8/0/0.12.13.0.0.1.1 sdisk CLAIMED DEVICE HP H0
/dev/dsk/c25t1d1 /dev/rdsk/c25t1d1
disk 62 0/8/0/0.12.13.0.0.1.2 sdisk CLAIMED DEVICE HP H0
/dev/dsk/c25t1d2 /dev/rdsk/c25t1d2

Re: HPUX/EVA 6000

Ganesan R — Thu, 18 Dec 2008 15:11:46 GMT

Hi Greg,

Have you tried #vgreduce -f vg02 to forcefully remove the missing pv's ?. After that you can extend with new pv links.

Re: HPUX/EVA 6000

Greg Hutchins — Thu, 18 Dec 2008 15:13:16 GMT

I actually have tried vgreduce -f with no luck.

pds [/root]# vgreduce -f vg02
skip alternate link /dev/dsk/c16t0d7
skip alternate link /dev/dsk/c16t1d0
skip alternate link /dev/dsk/c16t1d1
skip alternate link /dev/dsk/c16t1d2
vgreduce: Couldn't query physical volume "/dev/dsk/c15t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgreduce: Couldn't query physical volume "/dev/dsk/c15t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgreduce: Couldn't query physical volume "/dev/dsk/c15t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgreduce: Couldn't query physical volume "/dev/dsk/c15t1d2":
The specified path does not correspond to physical volume attached to
this volume group
skip alternate link /dev/dsk/c18t0d7
skip alternate link /dev/dsk/c18t1d0
skip alternate link /dev/dsk/c18t1d1
skip alternate link /dev/dsk/c18t1d2

Re: HPUX/EVA 6000

Ganesan R — Thu, 18 Dec 2008 15:20:08 GMT

Hi,

Can you try this?

#vgreduce -l /dev/vg02

Finally you can try this also...

#mv /etc/lvmtab /etc/lvmtab.old
#vgscan -av

Re: HPUX/EVA 6000

Greg Hutchins — Thu, 18 Dec 2008 15:36:18 GMT

Thank-you for the help. I was able to remove the old paths and run the vgscan. The new paths were added in but I am still receiving the same message with the new paths.

pds [/etc]# vgdisplay -v vg02
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
--- Volume groups ---
VG Name /dev/vg02
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 4
Act PV 4
Max PE per PV 12799
VGDA 8
PE Size (Mbytes) 4
Total PE 51188
Alloc PE 51188
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/c25t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d2":
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/vg02/lvbackup
LV Status available/syncd
LV Size (Mbytes) 204752
Current LE 51188
Allocated PE 51188
Used PV 4

--- Physical volumes ---
PV Name /dev/dsk/c17t0d7
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Name /dev/dsk/c18t0d7 Alternate Link
PV Name /dev/dsk/c16t0d7 Alternate Link
PV Status available
Total PE 12797
Free PE 0
Autoswitch On

PV Name /dev/dsk/c17t1d0
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Name /dev/dsk/c18t1d0 Alternate Link
PV Name /dev/dsk/c16t1d0 Alternate Link
PV Status available
Total PE 12797
Free PE 0
Autoswitch On

PV Name /dev/dsk/c17t1d1
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Name /dev/dsk/c18t1d1 Alternate Link
PV Name /dev/dsk/c16t1d1 Alternate Link
PV Status available
Total PE 12797
Free PE 0
Autoswitch On

PV Name /dev/dsk/c17t1d2
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t0d7":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d1":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c25t1d2":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.
PV Name /dev/dsk/c18t1d2 Alternate Link
PV Name /dev/dsk/c16t1d2 Alternate Link
PV Status available
Total PE 12797
Free PE 0
Autoswitch On

Re: HPUX/EVA 6000

Greg Hutchins — Thu, 18 Dec 2008 15:40:17 GMT

i ran the vgchange and lvlnboot and now the problem is fixed. thank-you for the help.

Re: HPUX/EVA 6000

Torsten. — Thu, 18 Dec 2008 18:30:18 GMT

A new switch usually means a new domain id and another port. Because of this you get a new hardware path and a new device file in hp-ux up to version 11.23.

11.31 works different.

To adjust this, you can either vgreduce the path in question, change the cables and vgextend again or use vgexport, change cables and vgimport again.

All other operating systems i know do not depend on such connection details.

Re: HPUX/EVA 6000

Steven E. Protter — Thu, 18 Dec 2008 18:40:14 GMT

Shalom,

Sounds to me like its time to vgexport all the volume groups and rebuild.

SEP

Re: HPUX/EVA 6000

Greg Hutchins — Thu, 18 Dec 2008 19:12:25 GMT

No rebuild necessary:

cp /etc/lvmtbab /etc/lvmtab.old
vgscan -av
vgchange -a y
lvlnboot -R