[linux-lvm] Why doesn't the lvmcache support the discard (trim) command?

[Zdenek Kabelac]

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