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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Fri, 19 Oct 2018 11:49:53 +0200
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Subject: Re: [linux-lvm] Why doesn't the lvmcache support the discard (trim)
 command?
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To: Gionatan Danti <g.danti@assyoma.it>, LVM general discussion and development <linux-lvm@redhat.com>, Ilia Zykov <linux@izyk.ru>

Dne 19. 10. 18 v 11:42 Gionatan Danti napsal(a):
> On 19/10/2018 11:12, Zdenek Kabelac wrote:
>> And final note - there is upcoming support for accelerating writes with new 
>> dm-writecache target.
> 
> Hi, should not it be already possible with current dm-cache and writeback 
> caching?


Hi

dm-cache targets different goal - new  dm-writeback cache has way more optimal 
write-pattern to accelerate writes - compared even with 'writeback' mode.

Another point is - dm-writecache is written with 'NVDIMMs' in mind and it's 
also simpler.


Zdenek