[gentoo-user] NFS and portage tree

[gentoo-user] NFS and portage tree

[Uwe Thiem]

Hi folks, here comes an interesting little problem.

I have two boxes, A and B, both running gentoo. Box B has got a full portage 
tree, box A has none but nfs mounts it from B. This has worked for me for 
several years.

Since some update lately, A can not nfs mount /usr/portage (or anything else) 
from B. NFS mount is broken. I know that emerging nfs-utils will cure the 
problem. On the other hand, I can not emerge nfs-utils on A without nfs 
working. Hic rhodos, hic salta!

Anybody with an idea other than re-installing A?

Hm... Maybe with a livecd and chrooting.

Uwe

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Re: [gentoo-user] NFS and portage tree

[Neil Bothwick]

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On Fri, 9 Nov 2007 12:06:11 +0200, Uwe Thiem wrote:

> Since some update lately, A can not nfs mount /usr/portage (or anything
> else) from B. NFS mount is broken. I know that emerging nfs-utils will
> cure the problem. On the other hand, I can not emerge nfs-utils on A
> without nfs working. Hic rhodos, hic salta!

Set compatible CFLAGS etc. on B and emerge --buildpkgonly nfs-utils. Then
copy the package from $PKGDIR/All/nfs-utils-* to A using sneakernet and
unpack it into /. Then mount /usr/portage and emerge nfs-utils to make
sure it is installed properly.

Alternative, and less kludgy, solution. Tar up /usr/portage on B, unpack
it on A.

This reminds me of why I let each machine have its own portage tree and
run a local rsync mirror :)


--  
Neil Bothwick

Do not meddle in the affairs of dragons, for thou art crunchy.

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Re: [gentoo-user] NFS and portage tree

[Uwe Thiem]

On 09 November 2007, Neil Bothwick wrote:
> On Fri, 9 Nov 2007 12:06:11 +0200, Uwe Thiem wrote:
> > Since some update lately, A can not nfs mount /usr/portage (or anything
> > else) from B. NFS mount is broken. I know that emerging nfs-utils will
> > cure the problem. On the other hand, I can not emerge nfs-utils on A
> > without nfs working. Hic rhodos, hic salta!
>
> Set compatible CFLAGS etc. on B and emerge --buildpkgonly nfs-utils. Then
> copy the package from $PKGDIR/All/nfs-utils-* to A using sneakernet and
> unpack it into /. Then mount /usr/portage and emerge nfs-utils to make
> sure it is installed properly.

Thanks, Neil. Fortunately, the idea about a livecd and chroot worked. A can 
nfs mount again.

>
> Alternative, and less kludgy, solution. Tar up /usr/portage on B, unpack
> it on A.

Too big a thing for A. There is a reason why it doesn't have its own portage 
tree. ;-)

Uwe

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Re: [gentoo-user] NFS and portage tree

[Neil Bothwick]

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On Fri, 9 Nov 2007 13:27:54 +0200, Uwe Thiem wrote:

> > Alternative, and less kludgy, solution. Tar up /usr/portage on B,
> > unpack it on A.  
> 
> Too big a thing for A. There is a reason why it doesn't have its own
> portage tree. ;-)

You could get away with copying only the directories you need. Or just
stick the directories on a USB stick and do

PORTDIR_OVERLAY="/media/sda1" emerge nfs-utils


-- 
Neil Bothwick

Women live longer than men because they have so many clothes that they
wouldn't be caught dead in.

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Re: [gentoo-user] NFS and portage tree

[PaulNM]

Uwe Thiem wrote:
> Too big a thing for A. There is a reason why it doesn't have its own portage 
> tree. ;-)
> 
> Uwe

You could also loopback mount a file just for portage, which shrinks the 
needed space down considerably.  I use reiserfs with tail packing to fit 
the whole tree onto a 260 megabyte file.

On a test directory in an ext3 partition..
du -h portagetest
561M    portagetest

Actual portage setup...

df -h
/root/portage.img     260M  248M   13M  96% /usr/portage

ls -lha /root/portage.img
-rw-r--r-- 1 root root 260M 2007-11-09 20:03 /root/portage.img

/etc/fstab entry...
/root/portage.img       /usr/portage  auto  loop,noatime,nodev   0  2

Down to almost half is pretty darn good in my book. Of course, packages 
and distfiles are kept elsewhere. All my systems are different chosts, 
so no sharing packages; and I use http-replicator, so no need for 
distfiles saved on every machine.

PaulNM
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