Il 19-10-2018 15:08 Zdenek Kabelac ha scritto:
Hi
It's rather about different workload takes benefit from different
caching approaches.
If your system is heavy on writes - dm-writecache is what you want,
if you mostly reads - dm-cache will win.
That's why there is dmstats to also help
>
> dm-writecache could be seen as 'extension' of your page-cache to held
> longer list of dirty-pages...
>
> Zdenek
>
Does it mean that the dm-writecache is always empty, after reboot?
Thanks.
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On 19.10.2018 16:08, Zdenek Kabelac wrote:
> Dne 19. 10. 18 v 14:45 Gionatan Danti napsal(a):
>> On 19/10/2018 12:58, Zdenek Kabelac wrote:
>>> Hi
>>>
>>> Writecache simply doesn't care about caching your reads at all.
>>> Your RAM with it's page caching mechanism keeps read data as long as
>>>
Dne 19. 10. 18 v 14:45 Gionatan Danti napsal(a):
On 19/10/2018 12:58, Zdenek Kabelac wrote:
Hi
Writecache simply doesn't care about caching your reads at all.
Your RAM with it's page caching mechanism keeps read data as long as there
is free RAM for this - the less RAM goes to page cache -
On 19/10/2018 12:58, Zdenek Kabelac wrote:
Hi
Writecache simply doesn't care about caching your reads at all.
Your RAM with it's page caching mechanism keeps read data as long as
there is free RAM for this - the less RAM goes to page cache - less read
operations remains cached.
Hi, does it
Dne 19. 10. 18 v 11:55 Ilia Zykov napsal(a):
On 19.10.2018 12:12, Zdenek Kabelac wrote:
Dne 19. 10. 18 v 0:56 Ilia Zykov napsal(a):
Maybe it will be implemented later? But it seems to me a little
strange when there is no way to clear the cache from a garbage.
Maybe I do not understand? Can
On 19.10.2018 12:12, Zdenek Kabelac wrote:
> Dne 19. 10. 18 v 0:56 Ilia Zykov napsal(a):
>> Maybe it will be implemented later? But it seems to me a little
>> strange when there is no way to clear the cache from a garbage.
>> Maybe I do not understand? Can you please explain this behavior.
>>
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
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?
Thanks.
--
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. -
Hello List,
I got a bug report from the customer, which said the node was fenced in the
cluster when they enabled cmirrord.
Before the node was fenced, we can see some log printed as below,
2018-09-25T12:55:26.555018+02:00 qu1ci11 cmirrord[6253]: cpg_mcast_joined
error: 2
Dne 19. 10. 18 v 0:56 Ilia Zykov napsal(a):
Maybe it will be implemented later? But it seems to me a little strange when
there is no way to clear the cache from a garbage.
Maybe I do not understand? Can you please explain this behavior.
For example:
Hi
Applying my brain logic here:
Cache
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