topic Re: device file problem in Operating System - HP-UX

device file problem,

aamir4u — Tue, 03 Jan 2012 09:56:19 GMT

Hi,

After reboot my filesystem(c03) not there

Wheni try mount

#mount -F vxfs /dev/ORAVG02/c03 /c03

mount: /dev/ORAVG02/c03: No such file or directory

When i go to under/dev/ORAVG02 dir

there is no device file ?

ll /dev/ORAVG02

total 0 crw-rw-rw- 1 root sys 64 0x080000 May 26 2011 group

How can recover it?

in c03 has very important data

How can again mount it and recover my c03 filesystem?

Re: device file problem

Dennis Handly — Tue, 03 Jan 2012 10:03:53 GMT

>How can recover it?

Do you know how it was lost?

Do you have an ignite backup of your system? If so, it would be easy to restore.

Re: device file problem

aamir4u — Tue, 03 Jan 2012 10:12:27 GMT

i dont know where is device file.

Is any command do that.

is that possible recreate device file .After create mount the /c03

Re: device file problem(screen short)

aamir4u — Tue, 03 Jan 2012 10:19:13 GMT

Hi,

I sent you smh screen short

Please see it and give me any solution

Re: device file problem

aamir4u — Tue, 03 Jan 2012 10:22:37 GMT

Hi,

mount -a

mount: /dev/ORAVG02/c03: No such file or directory

mount: /dev/ORAVG01/c02 is already mounted on /c02 mount: /dev/vg00/lvol8 is already mounted on /var mount: /dev/vg00/lvol7 is already mounted on /usr mount: /dev/vg00/lvol6 is already mounted on /tmp mount: /dev/vg00/lvol5 is already mounted on /opt mount: /dev/vg00/lvol4 is already mounted on /home mount: /dev/vg00/lvol1 is already mounted on /stand

Please see it

Re: device file problem

Torsten. — Tue, 03 Jan 2012 10:37:17 GMT

You need to activate volume group ORAVG02.

Re: device file problem

aamir4u — Tue, 03 Jan 2012 10:46:35 GMT

When i run vgdisplay

its shown ORAVG02

VG Name /dev/ORAVG02

VG Write Access read/write

VG Status available

Max LV 255

Cur LV 0

Open LV 0

Max PV 16

Cur PV 2

Act PV 2

Max PE per PV 1016

VGDA 4 PE Size (Mbytes) 256

Total PE 670 Alloc

PE 0 Free PE 670 Total PVG 0 Total Spare PVs 0 Total Spare PVs in use 0 VG Version 1.0 VG Max Size 4064g VG Max Extents 16256

Re: device file problem

Torsten. — Tue, 03 Jan 2012 10:52:56 GMT

Could you please paste this again in a better format?

Please show

# ls -l /dev/ORAVG02

Re: device file problem

aamir4u — Tue, 03 Jan 2012 11:04:34 GMT

there is output

ls -l /dev/ORAVG02

total 0 crw-rw-rw- 1 root sys 64 0x080000 May 26 2011 group

and also sent you my server lvmtab file attached mail

Please see it

Re: device file problem

Torsten. — Tue, 03 Jan 2012 11:16:21 GMT

This is strange. lvmtab is showing 3 disks, vgdisplay only 2.

There is no special file for any LVOL.

Please post

# vgdisplay -v /dev/ORAVG02

Re: device file problem

aamir4u — Tue, 03 Jan 2012 11:23:59 GMT

Please see it attached file.

thanks

Re: device file problem

Torsten. — Tue, 03 Jan 2012 11:29:15 GMT

According to this the VG is just empty.

Any recent changes in the SAN?
Any other recent changes made?

Consider to restore from backup.

Re: device file problem

aamir4u — Tue, 03 Jan 2012 11:35:38 GMT

Please see it my ioscan command>attached mail

some disk are virtual which are created on san storage server.

Thanks

Re: device file problem

aamir4u — Tue, 03 Jan 2012 12:21:16 GMT

As per talk to dba and users no recently change on san and servers

i saw the san log messages

no critical issue every virtual disks are o.k condition.

so,

what can we do

Please tell us easiar way.

Re: device file problem

Patrick Wallek — Tue, 03 Jan 2012 14:31:33 GMT

If you know what disks were part of this VG you could try reimporting them.

The only problem is that with a regular 'vgimport' you will get default LV names (like lvol1, lvol2, etc.). But if there was only one LV in this VG that shouldn't be a problem.

For example, if you want to import ORAVG02 and it had disks c1t2d3 and c1t2d4 then you would do:

vgimport /dev/ORAVG02 /dev/dsk/c1t2d3 /dev/dsk/c1t2d4

Re: device file problem

pradeep m — Wed, 04 Jan 2012 06:29:09 GMT

Hi,

From the existing volume group configuration we can see that there is no logical volume configured for this vg "ORAVG02".

Extract from Vgdisplay output:

# vgdisplay -v /dev/ORAVG02
VG Name /dev/ORAVG02
VG Write Access read/write
VG Status available
Max LV 255
Cur LV0 --> No Lvol configured
Open LV 0
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 1016
VGDA 4
PE Size (Mbytes) 256
Total PE 670
Alloc PE 0 --> This means no PE's are assigned
Free PE 670 -

.................

Possible cause: The missing lvol might be deleted by user.

If you have this volume group backup restore from it.

Re: device file problem

aamir4u — Wed, 04 Jan 2012 09:20:00 GMT

Hi,

Please cheak the my lvmconf file of ORAVG02

than please tell us import is possible to backup my logical volume /c03

if yes Please tell us how can we do that.

vgimport /dev/ORAVG02 /dev/rdisk/disk37 /dev/rdsk/c2t1d2 /dev/rdsk/c4/t1/d2 -------(this is correct command)

LVMCONF file

uatdata1 /etc/lvmconf#strings ORAVG02.conf

CONFIG01

/dev/ORAVG02

/dev/rdisk/disk37

/dev/rdsk/c2t1d2

/dev/rdsk/c4t1d2

LVMREC01:

VGDA0001 VGSA0001N;

uatdata1 /etc/lvmconf#strings ORAVG02.conf.old

CONFIG01

/dev/ORAVG02

/dev/rdisk/disk37

/dev/rdsk/c2t1d2

/dev/rdsk/c4t1d2

LVMREC01:

VGDA0001 VGSA0001N;

uatdata1 /etc/lvmconf#

Re: device file problem

aamir4u — Wed, 04 Jan 2012 10:02:27 GMT

Hi,

Is this is possible my filesystem /c03 is comeback with data.(I have no vgbackup and ignite)

if this is possible suggest me otherwise thanks

Thanks for future and past for always help

Thanks

Re: device file problem

Torsten. — Wed, 04 Jan 2012 13:49:38 GMT

You should review syslog.log or OLDsyslog.log for recent changes, since LVM related changed are recorded there. If vgimport doesn't work, your data is most likely gone (based on human error = deleting the LVOL).