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From: Roman Mamedov <rm@romanrm.net>
To: pg@mdraid.list.sabi.co.UK (Peter Grandi)
Cc: list Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: use ssd as write-journal or lvm-cache?
Date: Wed, 17 Feb 2021 15:17:59 +0500	[thread overview]
Message-ID: <20210217151759.60abe249@natsu> (raw)
In-Reply-To: <24620.55192.588729.189939@cyme.ty.sabi.co.uk>

On Wed, 17 Feb 2021 09:45:12 +0100
pg@mdraid.list.sabi.co.UK (Peter Grandi) wrote:

> The main point of "enterprise" flash SSD models is (as the
> original poster wrote) the ability to enable write-back (thus
> much, much higher committed write rates), if they have
> persistent buffering.

I read the OP as they meant enabling the write-back mode of LVM cache, where
loss of the SSD may lead to a data loss for the entire array, and justifying
that simply by the SSD being a reliable datacenter one. My objection was to
that, but perhaps indeed I understood that part wrong.

-- 
With respect,
Roman

  reply	other threads:[~2021-02-17 10:19 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 [this message]
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

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