From: David Teigland <teigland@redhat.com>
To: Arvid Picciani <aep@exys.org>
Cc: linux-lvm@redhat.com
Subject: Re: [linux-lvm] is lvmraid 1 thinpool with integrity safe?
Date: Tue, 11 Apr 2023 08:15:16 -0500 [thread overview]
Message-ID: <20230411131516.GA27598@redhat.com> (raw)
In-Reply-To: <CACD9L=A9i6QFzXtnQh6e3=gD9u6cy3VJAtCEaf1WsoCU_eE3kQ@mail.gmail.com>
On Sun, Apr 09, 2023 at 02:21:50PM +0200, Arvid Picciani wrote:
> Hi,
>
> doing some performance tests i noticed that lvmraid + integrity + thinpool
> outperforms zfs z1 by 5x while offering the same features. (snapshots,
> integrity)
>
> Is this somehow unsafe or how come it is so unpopular?
>
> lvcreate --type raid1 --mirrors 1 --size '100M' loop --name loopmeta
> --raidintegritymode journal
> lvcreate --type raid1 --mirrors 1 --size '700M' loop --name loopdata
> --raidintegritymode journal
Hi, that command does not actually enable integrity. You need to include
the option "--raidintegrity y". (lvcreate should perhaps warn you about
setting raidintegritymode when you've not enabled integrity.)
> lvconvert --type thin-pool --poolmetadata loop/loopmeta loop/loop
We do not currently permit raid+integrity to be used for a thin pool. It
should be enabled in a coming release.
Dave
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prev parent reply other threads:[~2023-04-11 13:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-09 12:21 [linux-lvm] is lvmraid 1 thinpool with integrity safe? Arvid Picciani
2023-04-11 9:15 ` Gionatan Danti
2023-04-11 13:15 ` David Teigland [this message]
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