how to find logical volume from filesystem mount point

[Ra Jose]

Does anyone knows how to find the logical volume on which the filesystem is mounted.
I am running HP-UX 11iv1 on rp7420 (npar).
I have one filesystem /usr/oracle/ctemp
Apparently, a lvol was mounted on this
/usr/oracle/ctemp mount point. But this was not
added to fstab nor to SG cluster pkg cntl script.
This server got hung sometime back and we had no other option but to reset the box.

Since this filesystem /usr/oracle/ctemp was not in fstab nor in SG cntl script, this was not mounted.

How can I find out which volume group, logical volume this filesystem belongs.?

Thank you all

RaJose

[James R. Ferguson]

Hi:

# mount -p

Regards!

...JRF...

[DCE]

The mount point may not not configured to mount at boot

You can try SAM to show more info on it

highlight the filesystem /usr/oracle/ctemp and display more info on it - it should show you the mount info

SAM does have some use.........

[spex]

Hello,

Look at the first column of the output from:
$ bdf

PCS

[Patrick Wallek]

spex -- If the filesystem isn't mounted, bdf isn't going to give you any information.

[Hemmetter · Accepted solution]

Hi RaJose,

the filesystem was there before reboot
and now it is not?

find all lvols that are currently not mounted:
$ mount -p | awk ' {print $1 }' > f.out
$ ls -1 /dev/vg*/lvol* | grep -v -f f.out

now mount one by one somewhere an decide by content if it is the right one.

Otherwise maybe it was a CD/DVD mounted there.

rgds
HGH

[Torsten.]

If the filesystem was hfs (unlikely, of course), fsck will report "last mounted on":

fsck -n /dev/vg00/lvol1
** /dev/vg00/lvol1 (NO WRITE)
** Last Mounted on /stand
...

otherwise you have to mount the unmounted lvols and check the contents ... or (much better solution) - check your documentation!

[spex]

Patrick: Thanks for pointing that out. I just glanced at the question before answering.

Ra Jose: I like Hemmetter's answer. However, if you don't want to test-mount each lvol, you could restore /etc/mnttab from a backup of vg00, and grep on the desired mountpoint.

[James R. Ferguson]

Hi (again):

> Does anyone knows how to find the logical volume on which the filesystem is mounted.

Well, if "_IS_" really means "_WAS_" then I too misread this. As Hemmetter notes, the process of elimination might work. As Torsten notes, one would like to think that you have documentation.

Regards!

...JRF...

[Ra Jose]

Thank you all. Hemmeter's solution worked.
I had to do little tweaking but Hemmeter's approach was right. From the bdf output, I compared with what we have in all of /dev/vg
directories. A process of elimination left me with one which I guessed should be the one I was trying to mount. Luckily, it was.

Thanks again.

RaJose.

[James R. Ferguson]

Hi RaJose:

Actually you can examine the filesystem for its contents *_without*_ mounting it:

# ncheck /dev/vgNN/lvolX

Regards!

...JRF...

[Torsten.]

James - to be honest - I never heard of this command. That's why I love this forum - you can learn something new everyday!

Have fun!

[Ra Jose]

Thank you James. Just tried. This is very good tool to check what files/directories are contained in each lvol.

Thank you, unfortunately th thread is closed and I can't even assign points. But take it for me, this is 9 points.

RaJose.

[James R. Ferguson]

Hi (again):

Well, you _can_ reopen the thread and assign some points :-)

Regards!

...JRF...