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From Andrei Mikhailovsky <and...@arhont.com>
Subject Re: KVM disk cache option has no effect
Date Sat, 14 May 2016 22:31:53 GMT
Not as far as I know (. The ticket status is closed

Andrei

----- Original Message -----
> From: "Simon Weller" <sweller@ena.com>
> To: "users" <users@cloudstack.apache.org>
> Sent: Thursday, 12 May, 2016 14:38:35
> Subject: Re: KVM disk cache option has no effect

> All,
> 
> Is there a current issue in Jira on this?
> 
> - Si
> 
> 
> 
> 
> 
> ________________________________________
> From: Yuriy Karpel <yuriy@karpel.su>
> Sent: Thursday, May 12, 2016 7:07 AM
> To: users@cloudstack.apache.org
> Subject: Re: KVM disk cache option has no effect
> 
> The same function does not work on centos + ceph. CloudStack 4.7.1
> 
> 2016-05-12 14:29 GMT+03:00 Andrei Mikhailovsky <andrei@arhont.com>:
> 
>> Hi Shweta,
>>
>> thanks for your findings. I am very much surprised to see this was not
>> discovered earlier, especially since this feature has been implemented many
>> versions back (back in version 4.4 or 4.5 i think). I was under the
>> impression that people are testing and reporting on the new features before
>> they hit the release, which apparently is not the case, at least for some
>> new features. From what I can see this feature was completed about a year
>> ago.
>>
>> I've tried to reopen this issue, but i don't have the rights due to the
>> Jira being in a temporary Lockdown mode.
>>
>> Could someone with the right access reopen this issue on the grounds that
>> it was reported (by at least two individuals) that this feature is not
>> working.
>>
>> Many thanks
>>
>> Andrei
>>
>> ----- Original Message -----
>> > From: "Shweta Agarwal" <shweta.agarwal1@accelerite.com>
>> > To: "users" <users@cloudstack.apache.org>
>> > Sent: Thursday, 12 May, 2016 12:02:59
>> > Subject: RE: KVM disk cache option has no effect
>>
>> > Hi Andrei,
>> >
>> > Few days back I was also doing some testing in this area and then we
>> found out
>> > that cache field in disk offering is just a UI or API parameter. But in
>> actual
>> > implementation of the API we are just neglecting this parameter . So
>> > effectively these parameters in disk offering does nothing  .
>> >
>> > Thanks
>> > Shweta
>> >
>> > -----Original Message-----
>> > From: Andrei Mikhailovsky [mailto:andrei@arhont.com]
>> > Sent: Thursday, May 12, 2016 4:07 PM
>> > To: users
>> > Subject: KVM disk cache option has no effect
>> >
>> > Hello
>> >
>> > I've been trying to use cache = writeback option for my KVM hypervisor
>> with ceph
>> > backend storage. However, when I am launching a vm that uses the disk
>> offering
>> > with cache=writeback, the cache setting is still set to =none according
>> to the
>> > ps aux command.The same applies to the root as well as additional data
>> volumes.
>> >
>> > I am using ACS 4.7.1, both management and hypervisor servers are Ubuntu
>> 14.04.
>> >
>> >
>> > Could someone please advise on how enable writeback cache?
>> >
>> > Cheers
>> >
>> > Andrei
>> >
>> >
>> >
>> >
>> >
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