[CentOS] C7 and docker storage (folllowing myself up)

Fri Dec 1 16:01:12 UTC 2017
m.roth at 5-cent.us <m.roth at 5-cent.us>

m.roth at 5-cent.us wrote:
> Gianluca Cecchi <gianluca.cecchi at gmail.com> wrote:
>> Date: Thu, 30 Nov 2017 09:55:58 +0100
>> On Wed, Nov 29, 2017 at 10:23 PM, <m.roth at 5-cent.us> wrote:
>>> The latter would explain the message my user's job gave him when it
>>> tried to umount /
>>> A bit of googling, and I see something called overlayFS can be used...
>>> but I know nothing about that, or how dangerous it is.  Anyone got a
>>> pointed to something more than the minimal how to configure docker
>>> to use it?
>> You could follow CentOS Atomic SIG
>> https://wiki.centos.org/SpecialInterestGroup/Atomic
>> http://www.projectatomic.io/download/
>> and/or read here and adapt in case for your storage needs:
>> http://www.projectatomic.io/docs/docker-storage-recommendation/
>> See also here for overlayfs addiction in CentOS Atomic Host in September
>> this year
>> https://seven.centos.org/2017/09/new-centos-atomic-host-with-overlayfs-storage/
> Interesting, but it doesn't help me: I can't rebuild the server, it's in
> use, and I yum installed docker from the std. repos. What I see from the
> links tells me how to switch storage, not how to manually configure
> overlay2 storage, and whether I can do as I said, and point it to an
> NFS-mounted location.
I just found some RH documentation for C 7 on overlayfs, and I see it says
that NFS is only usable for the the docker graphs.... So, I just found, on
the two systems I'm working with it on, an unused drive. Does anyone know
if it is the case that I *cannot* use the partition, but need to make an
LVM on it, for docker to use it?