From: antlists <antlists@youngman.org.uk>
To: Peter Grandi <pg@mdraid.list.sabi.co.UK>,
list Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: use ssd as write-journal or lvm-cache?
Date: Wed, 17 Feb 2021 18:03:45 +0000 [thread overview]
Message-ID: <58ea0f6f-eb90-98e1-5f51-148fc0367843@youngman.org.uk> (raw)
In-Reply-To: <24620.56829.93946.65275@cyme.ty.sabi.co.uk>
On 17/02/2021 09:12, Peter Grandi wrote:
>> I was to use ssd to cache my mdadm-raid5 + lvm storage.
> Not that sure that layering MDADM on top of DM/LVM2 is always a
> good idea, I tend to prefer to keep things simple.
>
Is that what the OP is doing? I don't think putting raid on top of lvm
is a good idea, which is why I'm putting lvm on top of raid.
Whatever, I guess you're better putting the cache on the bottom layer,
just above the actual hardware. In my case, that would be caching the raid.
Cheers,
Wol
prev parent reply other threads:[~2021-02-17 18:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-17 3:27 use ssd as write-journal or lvm-cache? d tbsky
2021-02-17 6:09 ` Roman Mamedov
2021-02-17 8:45 ` Peter Grandi
2021-02-17 10:17 ` Roman Mamedov
2021-02-17 8:52 ` d tbsky
2021-02-17 9:12 ` Peter Grandi
2021-02-17 13:50 ` d tbsky
2021-02-17 20:50 ` Peter Grandi
2021-02-17 18:03 ` antlists [this message]
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