Finding logical volumes for a mountpoint

[mark yeo]

# lvcreate -L 1000 -n lvol20 /dev/vg01
# newfs -F vxfs /dev/vg01/rlvol20
# mount /dev/vg01/lvol20 /mymountpoint


the above is not added to the fstab file. assuming that now the system is reboot, how can one supposed to find the logical volume of this mymountpoint?

[bhavin asokan]

hi,

use like this

#lvcreate -L 1000 -n lvmymountpoint /dev/vg01
# newfs -F vxfs /dev/vg01/rlvmymountpoint
# mount /dev/vg01/lvmymountpoint /mymountpoint


regds,

[Sridhar Bhaskarla]

Hi Mark,

If it is hfs, an 'fsck' on it would have shown the 'last mounted on' information. But it's not possible with vxfs. You will have to use trail and error methods such as mounting it on a test directory, look at the contents etc.,.

What I normally do is not to issue 'mount' command that way. After newfs, I would add the entry in /etc/fstab and confirm it by simply running the command "mount /mymountpoint". That way I am sure that it is going to pickup after reboot.

-Sri

[Ranjith_5]

Hi mark,


1.) By manually mounting the LV and seeing the data.

2.) You can find out the last created LV by finding the last created LV device file name by ls -alR /dev/vg*


Regards,
Syam

[Slawomir Gora]

Hi,

try to search root history file for mount command.

[twang]

you're right, so you need to edit the file /etc/fstab, for example,
/dev/vg01/lvol20 /mymountpoint vxfs rw,suid,nolargefiles,delaylog,datainlog 0 2

[Ian Foster_2]

Also if you want a quick way to update fstab with the currently mounted file systems (if you have a few to add), try :

# mount -p > /etc/fstab

Good practice to make a copy of your original fstab first of course, in case it all goes horribly wrong.

[KapilRaj]

may be mark used to work on aix. aix's odm remembers the last mount point... though not in filesystems

Kaps