[Devel] [PATCH rh7] ve: Add a ability to show ve.mount_opts

[Maxim Patlasov]

On 08/26/2015 07:50 AM, Kirill Tkhai wrote:
>
> On 26.08.2015 17:40, Konstantin Khorenko wrote:
>> On 07/20/2015 10:05 PM, Maxim Patlasov wrote:
>>> On 07/14/2015 01:27 AM, Kirill Tkhai wrote:
>>>> В Пн, 13/07/2015 в 12:38 -0700, Maxim Patlasov пишет:
>>>>> On 07/08/2015 04:50 AM, Kirill Tkhai wrote:
>>>>>> ...
>>>>>>> Why do we need to show hidden options to CT' user? He/she doesn't
>>>>>>> see
>>>>>>>
>>>>>>> ".balloon" file, so it doesn't seem consistent to show
>>>>>>> "balloon_ino=N".
>>>>>> But this way "read" won't show all written using "write". It may
>>>>>> confuse users or vzctl developers.
>>>>>>
>>>>>> I think more debug info won't be worse.
>>>>> Sorry for delay, I somehow missed your reply in my inbox folder. Are
>>>>> these 'read' and 'write' allowed only from host system (ve0) or
>>>>> inside
>>>>> CT as well?
>>>> It's allowed from inside a CT like other ve cgroup files.
>>>> But it's not a problem of this patch, it's a generic problem,
>>>> because mounting of ve cgroup from CT is not prohibited for now.
>>>> Please, see cgroup_mount() for the details.
>>> OK.
>> So, let's continue here:
>> * by default ve cgroup is not visible from inside a CT
>>
>> * currently it's possible to mount ve cgroup inside a CT, but this is temporarily, we'll disable this
>>    https://jira.sw.ru/browse/PSBM-34291
>>
>> * this patch allows to see mount options via ve cgroup =>
>>    after PSBM-34291 is fixed, mount options will be visible only from ve0 (host)
>>
>> * for host it's OK to see all hidden options
>>
>> Kirill, Maxim, please ack that i understand the situation correctly here,
>> and i'll apply the patch.
> Yeah, the above is true.
yes