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From: Eric Ren <renzhengeek@gmail.com>
To: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Cc: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Question about thin-pool/thin LV with stripes
Date: Sat, 26 Jan 2019 11:36:04 +0800	[thread overview]
Message-ID: <CAKM4AewHtiKW56pwMt=xRPKPXb5pECOAoMU=kDJXAdYmdf2Gtw@mail.gmail.com> (raw)
In-Reply-To: <3d9fcd41-46df-aa71-7be9-f2258b7598e5@gmail.com>

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Hi Zdenek,

When 'stripe_size' is the 'right size' - striped device should appear
> faster,
> but telling you what's the best size is some sort of 'black magic'  :)
>
> Basically - strip size should match boundaries of thin-pool chunk sizes.
>
> i.e. for thin-pool with 128K chunksize -  and 2 disks -
> I'd assume best result you should get with 64K stripesize (so 2 disks will
> make it 128K stripe)  - but it depends on number of hw aspects.
>
> So you will need to benchmark it.
>

 Thanks a lot for your input! Very helpful points to take more
consideration~

Best regards,
Eric

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  reply	other threads:[~2019-01-26  3:36 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-23 13:40 [linux-lvm] Question about thin-pool/thin LV with stripes Eric Ren
2019-01-24 14:54 ` Eric Ren
2019-01-24 15:06   ` Eric Ren
2019-01-25 21:53     ` Zdenek Kabelac
2019-01-26  3:36       ` Eric Ren [this message]
2019-01-25 21:47   ` Zdenek Kabelac

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