[Users] OpenVZ and ZFS excellent experience

[Kirill Korotaev]

> On 09 Jan 2015, at 21:39, Pavel Odintsov <pavel.odintsov at gmail.com> wrote:
> 
> Hello, everybody!
> 
> Do somebody have any news about ZFS and OpenVZ experience?
> 
> Why not?
> 
> Did you checked my comparison table for simfs vs ploop vs ZFS volumes?
> You should do it ASAP:
> https://github.com/pavel-odintsov/OpenVZ_ZFS/blob/master/openvz_storage_backends.md
> 
> Still not interesting?
> 
> For example if you have 5Tb disk array (used up to 90%) and using
> ploop now you lose about 800GB of disk space!

Well, AFAIR we simply have a threshold that ploop is not compacted until it’s size is 20% bigger then it should be…
Also you can try smaller ploop block size. Anyway, my point is that it has nothing to do with ext4 metadata as stated in your table.


> This data is from real HWN with few hundreds of containers.
> 
> I have excellent experience and very good news about ZFS! ZFS on Linux
> team will add very important feature, linux quota inside container
> (more details here https://github.com/zfsonlinux/zfs/pull/2577
> 
> But still no news about ZFS from OpenVZ team (and even from Virtuozza
> Core) and we can work separately :)
> 
> Fortunately, we do not need any support from vzctl and can use "raw
> vzctl" with some lightweight manuals from my repo:
> https://github.com/pavel-odintsov/OpenVZ_ZFS/blob/master/OpenVZ_containers_on_zfs_filesystem.md
> 
> I collected all useful information here
> https://github.com/pavel-odintsov/OpenVZ_ZFS
> 
> Stay tuned! Join to us!
> 
> -- 
> Sincerely yours, Pavel Odintsov
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