Date: Thu, 25 Jul 2002 18:50:53 -0400 (EDT) From: Jerry McAllister <jerrymc@clunix.cl.msu.edu> To: kdagee@attglobal.net (karl agee) Cc: FreeBSD-Questions@FreeBSD.ORG (freebsd-questions) Subject: Re: Linking a directory to another filesystem Message-ID: <200207252250.g6PMorT15954@clunix.cl.msu.edu> In-Reply-To: <1027634062.758.4.camel@enterprise.workgroup> from "karl agee" at Jul 25, 2002 02:54:24 PM
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>
> sorta newbie question, I think, and not sure where to post it...so I put
> it here.
>
> system: 5.0-current, lots of hard disk space.
>
> I am filling up / with stuff...so much so that the system is crashing
> and rebooting(!) when I print. Problem seems to be that /usr directory
> is located on the / filesystem when I have a /usr filesystem that has
> gobs of space but not much on it.
>
> I want to move the /usr directory contents over and link the /usr
> directory on the / filesystem to the /usr filesystem but not exactly
> sure how to do it (after reading the docs) without messing things up.
> Not sure if I need to soft link or hard link...etc.
I just posted three detailed ways of doing this yesterday. It was
for the /var directory but it would be the same thing for /usr.
You can look through the list archives for it.
Actually, we find that is is /usr/local that grows a lot so on
our systems we just pull our /usr/local and put it somewhere else
with a link, but your usage may be different I suppose.
Anyway, basically
- make yourself some space where there is lots of room to grow.
- It may mean adding a disk, partitioning it with fdisk and disklabel
and newfs-ing the partition[s]. I'll assume that is done.
- create a directory there, be it just a subdirectory or a
whole partition. Let's say you got it all made and mounted
as /newplace
- Move the contents of /usr to it probably using tar
# cd /
# tar cf /newplace/usr.tar /* Here I assume lots of space in newplace
# cd /newplace /* Or else put the tar file some where else
# tar xf usr.tar
# mv tar new.usr
- rename the old /usr /* just keep it handy in case of a skrewup
# cd /
# mv usr usr.old
- make a link
# ln -s /newplace/new.usr usr
Now you are ready to go. You can go back and rm -rf the /usr.old
after you have checked out the new one and then goto /newplace and
get rid of the tar file.
Probably it is best to do all this in single user.
It isn't necessary to call the new usr directory in /newplace anything
other than just usr, but I like to do that to make it clear what I
have done so I don't confuse myself on those groggy mornings.
////jerry
>
> thanks, karl
>
>
>
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