From: Gionatan Danti <g.danti@assyoma.it>
To: Zdenek Kabelac <zkabelac@redhat.com>
Cc: "Tomas Dalebjörk" <tomas.dalebjork@gmail.com>,
"general discussion and development" <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] lvm limitations
Date: Wed, 16 Sep 2020 00:26:50 +0200 [thread overview]
Message-ID: <cf779b76e25707b8ec3361f55318a1c7@assyoma.it> (raw)
In-Reply-To: <fad39006-f18f-d15e-b29b-bb7f59a33be1@redhat.com>
Il 2020-09-15 23:47 Zdenek Kabelac ha scritto:
> You likely don't need such amount of 'snapshots' and you will need to
> implement something to remove snapshot without need, so i.e. after a
> day you will keep maybe 'every-4-hour' and after couple days maybe
> only a day-level snapshot. After a month per-week and so one.
Agree. "Snapshot-thinning" is an essential part of snapshot management.
> Speaking of thin volumes - there can be at most 2^24 thin devices
> (this is hard limit you've ask for ;)) - but you have only ~16GiB of
> metadata to store all of them - which gives you ~1KiB of data per such
> volume -
> quite frankly this is not too much - unless as said - your volumes
> are not changed at all - but then why you would be building all this...
>
> That all said - if you really need that intensive amount of
> snapshoting,
> lvm2 is likely not for you - and you will need to build something on
> your own,
> as you will need way more efficient and 'targeted' solution for your
> purpose.
Thinvols are not activated by default - this means it should be not a
big problem managing some hundreds of them, as the OP ask. Or am I
missing something?
Regards.
--
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8
next prev parent reply other threads:[~2020-09-15 22:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-29 23:25 [linux-lvm] lvm limitations Tomas Dalebjörk
2020-08-30 17:33 ` Zdenek Kabelac
2020-08-30 18:01 ` Gionatan Danti
2020-08-30 19:30 ` Zdenek Kabelac
2020-09-01 13:21 ` Gionatan Danti
2020-09-15 19:16 ` Tomas Dalebjörk
2020-09-15 20:08 ` Zdenek Kabelac
2020-09-15 21:24 ` Tomas Dalebjörk
2020-09-15 21:30 ` Stuart D Gathman
2020-09-15 22:24 ` Gionatan Danti
2020-09-15 21:47 ` Zdenek Kabelac
2020-09-15 22:26 ` Gionatan Danti [this message]
2020-09-16 4:25 ` Tomas Dalebjörk
2020-09-17 19:24 ` Zdenek Kabelac
2020-09-16 4:31 ` Tomas Dalebjörk
2020-09-16 4:58 ` Tomas Dalebjörk
2020-09-17 19:17 ` Zdenek Kabelac
2020-09-17 19:32 ` Zdenek Kabelac
2020-09-14 6:03 Tomas Dalebjörk
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:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cf779b76e25707b8ec3361f55318a1c7@assyoma.it \
--to=g.danti@assyoma.it \
--cc=linux-lvm@redhat.com \
--cc=tomas.dalebjork@gmail.com \
--cc=zkabelac@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* 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).