[SAC] [support.osuosl.org #30704] OSGeo Server Parts Order

[Regina Obe]

Sorry I guess I missed all this discussion.

For the OSGeo7 we had 500GB allocated for root, and the rest of the disks were set aside for ZFS.

I think a similar setup will work.  Note the 500 GB is useful for exporting images so I'd like at least that much separate from our lxd ZFS pool.  It doesn't need to be the root drive and doesn't really need mirroring either.

I think going with RAID0 is probably the best.
Also last time we did this -- you just inserted the Ubuntu 18.04 disk in the CD tray and we took care of the installation.
Not sure if that is doable or if because of the way the RAID is setup that's not doable.

Thanks,
Regina

-----Original Message-----
From: Alex M [mailto:tech_dev at wildintellect.com] 
Sent: Monday, August 26, 2019 12:19 PM
To: Regina Obe <lr at pcorp.us>
Cc: support at osuosl.org; sac at lists.osgeo.org; rootmail-students at osuosl.org
Subject: Re: [support.osuosl.org #30704] OSGeo Server Parts Order

Regina,

Do you have an opinion on this, since you setup OSGeo7, what would give you the most similar layout?

Thanks,
Alex

On 8/26/19 09:11, Lance Albertson via RT wrote:
> On Sat Aug 17 12:21:38 2019, ramereth wrote:
>> On Fri Aug 16 17:09:30 2019, michael.smith.erdc at gmail.com wrote:
>>> ZFS on Ubuntu 18 is just  sudo apt install zfsutils-linux
>>>
>>>>> We finally got the parts in the machines. How would you like the 
>>>>> disks to be configured in the HW RAID? RAID5, RAID6? RAID10? Also, 
>>>>> I'd
>>>> imagine you
>>>>> want this machine to be moved onto a public network? Do you want 
>>>>> us to install the OS, and if so what?
>>>>>
>>>>> Thanks-
>>>>
>>>> Hmm, we plan to run Ubuntu 18.04 with ZFS so that we can easily do 
>>>> lxd containers. Last I checked installing ZFS during install was 
>>>> kind of annoying, so maybe a small slice off one drive as ext4 for 
>>>> the OS and the rest ZFS post install. In which case the "Raiding" 
>>>> would be done via ZFS in software?
>>>>
>>>> I'll let someone chime in if that doesn't sound right.
>>
>> So it sounds like you want the server setup with a JBOD (just a bunch 
>> of
>> disks) effectively making each disk visible for ZFS and no HW RAID.
>> Unfortunately, the disk controllers technically don't support JBOD, 
>> however we can work around it by setting up each disk as a RAID0 
>> device. This is what we do our Ceph storage nodes and it works quite 
>> nicely. It also allows the disks to use the HW RAID cache.
>>
>> Do you want me to attempt to do a rootfs on ZFS or try and keep it 
>> simple and just do a RAID1 with the first partition on two or more 
>> drives, and leave the rest of the drives for ZFS?
> 
> Re-ping ^
>