archive mirror
 help / color / mirror / Atom feed
From: Zdenek Kabelac <>
To: LVM general discussion and development <>,
	Oleksandr Panchuk <>
Subject: Re: [linux-lvm] Prepend LV
Date: Mon, 3 Sep 2018 16:52:10 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Dne 3.9.2018 v 11:04 Oleksandr Panchuk napsal(a):
> Hello, All
> I have not found any documentation about how to prepend LV with some free space
> .
> Possible use case - we have LV with filesystem and data on it. But to migrate 
> this LV to KVM virtual machine we need to craft partition inside this LV with 
> already existing data.
> I know it is possible to create new LV and copy data here, but it could be 
> time consuming for big LVs.
> So, Is there any way to prepend LV with some free space ?


Lvm2 does NOT support prepend ATM - as there was no big need for such operation.

On the other hand - experienced user can  with really low 'math-skill' 
requirements  for a manual  extension on the 'ASCII VG metadata' file in 'vi' 
editor -  the format is quite easy to follow.

I assume there is already some RFE to provide such support - in terms of 
existing limitation that you need to always prepend whole 'extent'  (so i.e. 
with 4MiB  extent size - you need to prepend at least 4MiB)



  parent reply	other threads:[~2018-09-03 14:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-03  9:04 [linux-lvm] Prepend LV Oleksandr Panchuk
2018-09-03 10:40 ` Daniel Etter
2018-09-03 11:02   ` Oleksandr Panchuk
2018-09-03 14:52 ` Zdenek Kabelac [this message]
2018-09-10 16:09   ` Ondrej Kozina
2018-09-21 13:07     ` Oleksandr Panchuk

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).