[Users] SIMFS users

Kir Kolyshkin kir at openvz.org
Tue Jul 21 17:17:55 PDT 2015



On 07/21/2015 04:24 PM, Gena Makhomed wrote:
> On 22.07.2015 0:11, Kir Kolyshkin wrote:
>
>> The biggest problem with simfs appears to be security. We have recently
>> found a few bugs (not in simfs per se, but in the kernel in general,
>> i.e. these
>> are not our bugs for the most part) that can be exploited to escape
>> the simfs and let container access the host file system. One single bug
>> like that should have everyone who is at least slightly concerned about
>> security to move to ploop. And there were a few :(
>
> simfs need for using OpenVZ with ZFS
>
>> Other "why not simfs" considerations are listed at
>> http://openvz.org/Ploop/Why#Before_ploop
>
> there are three levels:
>
> 1. before ploop: simfs over ext4
> 2.   with ploop: ext4 over ploop over ext4
> 3.  after ploop: simfs over ZFS
>
> comparing (1) and (2) - ploop win,
> but compating (2) with (3) - simfs win!

For one thing, I wonder how you use live migration with zfs,
can you please tell us?


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