changing mountpoint in vfstab

linuxsun · 03-28-2007, 12:17 AM

Hi
i got this line in /etc/vfstab
/dev/dsk/c1t0d0s10 20557672 9 20352087 5% /export/spare and i want to change /export/spare to /export/home . I have users data on /export/home. I did umount /export/spare n then i changed /export/spare to /export/home and i did mount /export/home but it didnt work as /export/home got data. What is the best solution of changing it ?

jlliagre · 03-28-2007, 01:10 AM

Can you clarify what didn't work ?

linuxsun · 03-28-2007, 05:13 AM

I think after changing mount to /export/home in vfstab i tried mount /export/home n it gave me msg that device is busy. It is busy coz i got user data on it.

jlliagre · 03-28-2007, 06:13 AM

It is busy because that user data is currently in use.
Either some of the users are still logged in, or some of their processes are still running.
The normal way is to mount a filesystem or an empty directory, or at least a directory with files that won't suffer from being unreachable after the mount.

wpn146 · 03-28-2007, 09:27 AM

Where did the line in /etc/vfstab come from? It looks like a line from "df -k".

standard format for /etc/vfstab fields are:

Code:

#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options

And I find the person most likely to be the cause of the mount point being active is that I am cd'ed to it myself.

linuxsun · 03-28-2007, 01:03 PM

Quote:

Originally Posted by wpn146

Where did the line in /etc/vfstab come from? It looks like a line from "df -k".

standard format for /etc/vfstab fields are:

Code:

#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options

And I find the person most likely to be the cause of the mount point being active is that I am cd'ed to it myself.

U r right. the main thing is that /dev/dsk/c1t0d0s10 is mounted on /export/spare n i want to change it to /export/home n all is mentioned in post above.

linuxsun · 03-28-2007, 01:13 PM

Quote:

Originally Posted by wpn146

Where did the line in /etc/vfstab come from? It looks like a line from "df -k".

standard format for /etc/vfstab fields are:

Code:

#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options

And I find the person most likely to be the cause of the mount point being active is that I am cd'ed to it myself.

U r right. the main thing is that /dev/dsk/c1t0d0s10 is mounted on /export/spar n i want to change it to /export/home n all is mentioned in post above.

jlliagre · 03-28-2007, 02:35 PM

Indeed.

Please read again post #4.

The system refuse this mount because it would crash some running programs.

If nothing important is running, go in single user mode (init 1) from the console, and try again that mount.

linuxsun · 03-29-2007, 12:55 AM

well i was trying the following plan
i was copying the /export/home to /export/home.backup
then
rm /export/home

change mount point in vfstab from /export/spar to /export/home
n copy data from /export/home.backup to /export/home
then mount /export/home .
But i was failed in step 1 . I was trying to copy /export/home to /export/home.backup with the following command
cp -r /export/home /export/home.backup
but it only copy 4 to 5 files i guess other users have created files with there users and there is permission problem in that. I even tried to copy/paste from GUI but again 4 to 5 files were copied.

jlliagre · 03-29-2007, 01:06 AM

These commands won't work. Can you explain the reasoning of doing all this in the first place ?

By using the automounter, you certainly can have some or all user's home directories be located in /export/spare.

linuxsun · 03-29-2007, 01:52 AM

I am implementing quota. For that i have to put it on /export/home . but its not in vfstab so i guess i cannot make it happen.

jlliagre · 03-29-2007, 02:15 AM

You certainly can do what you want. It's just you aren't doing it a correct way.

Why aren't you doing what I suggested in post #8 ?

linuxsun · 03-29-2007, 03:11 AM

Quote:

Originally Posted by jlliagre

Indeed.

Please read again post #4.

The system refuse this mount because it would crash some running programs.

If nothing important is running, go in single user mode (init 1) from the console, and try again that mount.

Right now no user is login n nothing is working there.
You mean i should to single user mode and try all that
cp -r /export/home /export/home.backup
rm /export/home
mount /exprot/home
cp -r /export/home.backup /export/home
there.

jlliagre · 03-29-2007, 08:22 AM

Quote:

Originally Posted by linuxsun

Right now no user is login n nothing is working there.
You mean i should to single user mode and try all that

Try this instead:

Code:

mv /export/home /export/home.backup
mkdir /export/home
mount /export/home
mv /export/home.backup/* /export/home
rmdir /export/home.backup