Cannot see vg02 /usr/informix

[Sherif Mattar]

Dears,
can anyone help out, i have a volume group not mounted with the following error
/dev/vg02/lvol1, error=6
no such device

BR,
Sherif Mattar

[Torsten.]

Some steps:

# strings /etc/lvmtab

what disk belong to vg02?

# ioscan -fn

disks are there?

# vgdisplay -v vg02

VG active?

Post results!

[James R. Ferguson]

Hi:

This sounds like the device file is missing (which is what the error and error number say).

Do:

# ls -l /dev/vg02

If the device file(s) are missing, you could try a 'vgexport' and then a 'vgimport'.

Regards!

...JRF...

[Sherif Mattar]

what disk belong to vg02?

/dev/dsk/c0t0d0
/dev/dsk/c0t1d0

ioscan -fn
i assume that
3 8/12.0.0
5 8/12.1.0

vgdisplay -v vg02

vgdisplay: volume group not activated.
vgdisplay: cannot display volume group "vg02"

[Sherif Mattar]

the return back for the ls -l /dev/vg02 is
group, lvol1, rvol1 with a root/sys user/group

[Sherif Mattar]

Dears,
what is the next step to recover ?
also how far is my situation ?
could it be a H/W issue ?

[Sherif Mattar]

i have tried vgchange -a y /dev/vg02
result:
vgchange: couldn't activate volume group /dev/vg02
Quorum not present, or some physical volume(s) are missing !!!?

any help

[Basheer_2]

Mattar,

Do pvdisplay on each one of them.

this will return the vg it belongs to.

[R.K. #]

Hi Sherif,

>>Quorum not present
Try to activate the Vg in low quorum mode.
# vgchange -a y -q n vg02

If two disks are present then probably one disk is missing or gone bad.

What is the status of /dev/dsk/c0t0d0 and /dev/dsk/c0t1d0 in:
# ioscan -fnC disk

Are they claimed??

[Patricio Besteiro]

Try:
ioscan -nfC disk |grep -i no_hw

I think disks are missing...