Bristol Digest, Vol 631, Issue 2

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Today's Topics:

1. Re: LVM needs a tidy up (Alex Butcher)
2. OT: Hardware Giveaway (Dave Addison)


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Message: 1
Date: Mon, 11 Jan 2016 13:40:42 +0000 (GMT)
From: Alex Butcher <lug@assursys.co.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] LVM needs a tidy up
Message-ID:
<alpine.LRH.2.11.1601111334210.22369@zlgugi.of5.nffheflf.cev>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed

On Mon, 11 Jan 2016, Peter Hemmings wrote:

> Thank Alex,
>
> I will ava go tomorrow but before I do it..
>
> On 11/01/16 10:14, Alex Butcher wrote:
>>
>> > https://dl.dropboxusercontent.com/u/45909169/LVMDisks.pdf
>> >
>> > I want to tidy up sdb:
>> >
>> > Could I join VG's "Fedora21_Study" and "Fedora" then rename it more
>> > suitably?
>>
>> Something like:
>>
>> exec telinit 1 # shut down to single-user mode
>> swapoff /dev/mapper/path_to_Fedora21_Study_swap # make sure swap is
>> off
>> umount /home # unmount /home
>> vgchange -a n Fedora21_Study # deactivate Fedora21_Study LVM
>> vgmerge Fedora Fedora21_Study # merge Fedora21_Study into Fedora VG
>
> the two VG's above have two "Swaps" (3.9 and 4Gb's), should I remove any
> duplicate Logical Volumes before trying to merge the VG's or will LV's of the
> same name/format be merged automagically?

Good catch! Googling suggests you'll need to rename the LVs with duplicated
names you aren't using (before the vgchange -a n) as vgmerge checks for
duplicate LV names (I couldn't quickly find what it does if it finds any -
I'd expect it to abort without attempting the merge).

In case it wasn't clear, my previous instructions are *untested*, just based
on how I'd /expect/ things to go. Some improvisation may be necessary!

> I assume I can rename LV's as long as the fstab is altered as necessary?

If you're mounting based on the device mapper node (i.e. /dev/mapper/XXX)
rather than by UUID, you'll need to alter fstab. If you're mounting by UUID,
you shouldn't need to touch fstab.

Best Regards,
Alex



------------------------------

Message: 2
Date: Mon, 11 Jan 2016 22:36:33 +0000
From: Dave Addison <dave@redmoor.org.uk>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: [bristol] OT: Hardware Giveaway
Message-ID: <3493981.rCy3oQJiQk@phaedra>
Content-Type: text/plain; charset="us-ascii"

I have a network attached, Laserjet 5 printer which I've retired. Like most
HPs, it works well with Linux.

As well as the basic printer, I've got a duplex unit, high capacity paper tray
and an envelope feeder. The basic printer is obviously an antique but is still
working fine, as is the duplex unit. The paper tray looks like it will need
some maintenance in the not so distant future but the envelope feeder is
getting downright fussy which is why I'm getting rid of it.

Anyone interested?

Regards
Dave



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End of Bristol Digest, Vol 631, Issue 2
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