[Users] vzmigrate to /vz2 instead of /vz

[Devon B.]

Shouldn't be millions of small files with ploop.  Should just be the 
one: root.hdd.  Where it is mounted shouldn't matter (VE_ROOT).

On 9/11/2014 9:57 PM, Nick Knutov wrote:
> I did exactly so.
>
> Migration to symlink is working. And CT is running ok after. But
> private/root paths are rewritten after migration to /vz + for simfs with
> billions small files running CT from symlink can be slower.
>
> Migration from symlink is also working. With the same issues plus source
> folder with CT is not deleted after migration, only symlink.
>
>
> 12.09.2014 7:16, Devon B. пишет:
>> Like I said though, use a symlink per VE, not the entire vz2/vz
>> directory.  Then you won't have to change anything in the config.  Just
>> create a symlink for the virtual servers you want on the second SSD
>> prior to migrating.
>>
>> mkdir /vz2/private/VEID
>> ln -s /vz2/private/VEID /vz/private/VEID
>>
>> Then try the migration, does it work?
>>
>> On 9/11/2014 8:51 PM, Nick Knutov wrote:
>>> I'm not good enough with such openvz internals and was hoped there is
>>> ready solution. I found https://openvz.org/Vzmigrate_filesystem_aware
>>> but it is for older version of vzmigrate.
>>>
>>> Yes, I tried symlink and
>>>
>>> 1) /vz2 -> /vz2 as symlink on /vz and back
>>> and I have changed private/root paths in CT conf after
>>> vzmigrate+vzmigrate back and files was not removed after second
>>> vzmigrate (from node where symlink was).
>>>
>>> 2) /vz -> /vz2
>>> looks ok but I have to change pathes in CT config after so CT should be
>>> restarted with downtime.
>>>
>>> So, all this does not look good. May be it can be better with mount
>>> --bind, but this is also not a good way.
>>>
>>>
>>>
>>> 12.09.2014 5:33, Devon B. пишет:
>>>> On 9/11/2014 7:00 PM, Nick Knutov wrote:
>>>>> I have old server with usual disks and new server with two ssd which
>>>>> are
>>>>> smaller size. I have /vz on one disk and /vz2 on another.
>>>>>
>>>>> I want to live migrate CTs from the old server to specified
>>>>> partition on
>>>>> the new server but I can't find how to do it. Does anybody know?
>>>>>
>>>> You could get dirty and do it manually with ploop send and
>>>> checkpointing.  However, have you tried just using a symlink from
>>>> /vz/private/VEID to /vz2/private/VEID?
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