archive mirror
 help / color / mirror / Atom feed
From: Gionatan Danti <>
To: LVM general discussion and development <>
Cc: Eric Toombs <>
Subject: Re: [linux-lvm] faster snapshot creation?
Date: Tue, 25 Feb 2020 10:31:43 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Il 2020-02-22 12:58 Eric Toombs ha scritto:
> So, is there a sort of "dumber" way of making these snapshots, maybe by
> changing the allocation algorithm or something?

Hi, I think that total snapshot creation time is dominated by LVM 
flushing its (meta)data to the physical disks. Two things to try:
- use thin lvm snapshot (see man lvmthin);
- create a pv/vg/lv from a memory-backed loop device (ie: truncate 
--size=1G /dev/shm/test.img; losetup -f /dev/shm/test.img; pvcreate 
/dev/loop0 and so on...)

Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - [1]
email: -
GPG public key ID: FF5F32A8

  reply	other threads:[~2020-02-25  9:31 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-22 11:58 Eric Toombs
2020-02-25  9:31 ` Gionatan Danti [this message]
2020-02-25  9:38 ` Zdenek Kabelac
2020-02-25 21:35   ` Eric Toombs
2020-02-26 10:01     ` Zdenek Kabelac
2020-02-26 14:03       ` Douglas Paul
2020-02-26  0:38 ` Stuart D. Gathman

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 \ \ \ \ \
    --subject='Re: [linux-lvm] faster snapshot creation?' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

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).