SUMMARY: Migrate /usr to another slice

Sorry the summary took so long but here it is.  Many thanks to all those
who replied (there were many :-) ).

The general procedure is as follows:

1) boot cdrom -s
2) mount /dev/rdsk/c0t0d0s0 to /a
3) mount /dev/rdsk/c0t0d0s6 to /mnt
4) There are many ways to do the actual file transfer but I think the
most straight forward one is:

cd /a/usr
find . -print |cpio -pvmPd /mnt

5) Edit /etc/vfstab to mount the new /usr
6) mv /a/usr /a/usrbak
6) reboot
7) verify that everythingis ok
8) boot cdrom -s
9) mount /dev/rdsk/c0t0d0s0 /a
10) remove or move /a/usrbak
11) reboot

Thanks again.

Fritz

> -----Original Message-----
> From: sunmaillist [mailto:sunlist@netlam.com]
> Sent: 24 June 2002 14:02
> To: sunmanagers@sunmanagers.org
> Subject: Migrate /usr to another slice
>
>
> Hello,
>
> I have this problem with my Solaris 8 box.  When I first
> setup the partitions, I allocated slice 6 for /usr.  However,
> the entry
> for mounting slice 6 to /usr was missing in the /etc/vfstab file and
> therefore slice 6 was never mounted to /usr.  So /usr has always been
> under
> the / filesystem.  Now the / is running out of space which is why I
> discovered this problem in the first place.  What I want to
> do now is to
> move everything from the current contents of /usr to slice 6 (without
> breaking anything like links and such), and then add
> the entry for mounting slice 6 to /usr back into the vfstab
> file.  What is
> the best way for doing this?  I thought maybe I could do this:
>
> 1) ufsdump 0vf somefilename /usr
> 2) mount slice 6 somewhere like /usrother
> 3) cd /usrother
> 4) ufsrestore rvf somefilename
> 5) add entry for mounting slice 6 to /usr in vfstab file
> 6) reboot and verify operation
> 7) reboot to single user mode and make sure /usr (slice 6 is
> not mounted)
> 8) go back into the original /usr and remove all the files to
> regain file
> space
> 9) reboot to normal mode
>
> But my concern is since /usr is on the / filesystem right
> now, I cannot
> unmount that filesystem before I do the ufsdump which means
> some files are
> in use and will not backup properly.  Is there some way to get around
> this?  Is there another way to do what I need to do here?
>
> Thanks in advance.
>
> Fritz Lam
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> sunmanagers@sunmanagers.org
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