JP Vossen on 2 Mar 2017 14:40:04 -0800

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Re: [PLUG] openATTIC?

Yeah, now that you mention it does say something about that.

We have a lot of very expensive EMC storage, the entire point of this file server cluster is to *not* be on very expensive EMC storage. I think the plan for this is 2x mirrored servers in 2x data centers. The hardware is probably Dell R710.720 with das blinken disk lights, but regardless it's not *my* problem (except as a user :). I'm unclear on the backup situation, but I'll ask next time I can. As noted I'm only a user of this system (though it was actually my idea to implement *something*), I was just wondering about the tool since the name came up.

On 03/02/2017 02:26 PM, Lee H. Marzke wrote:
I believe the site say even says OpenAttic is in development and not for production.    Who would use
that at work ?   I won't even use FreeNAS at work,  and spend lots of bucks for
Nexenta etc.   Nexenta has listed hardware SKU's that you can buy from Dell, or Supermicro
that are certified with the software.  Plus they release new Nexenta patches that are packaged
and tested with OS updates in the same package.

FYI,  If your ZIL/Slog doesn't have supercaps it's going to eventually lose data on a power fail, and
the software docs don't always cover this.  So HW cert is important.

The other issue is that disks slots have to be marked externally with the disk serial number/GUID
when you build the unit,  since there is no way to tell which of 8 disks is  'da3'  for example.
The more expensive systems like Nexenta ( not FreeNAS )  have ways telling you which slot the failed disk is
in.   My Nexenta system has a  Dell JBOD with 60 disks in a 4U cabinet, with orange lights to mark
failed disks right next to the disk.  This is HW dependant, so a software only solution generally cant do it.

It is really a surprise when da3 is bad and you can't tell which disk to pull - other than guessing
from the disk activity lights for example.  Guess wrong and you lose your whole pool.  Of course
you should be backing up - so now I also use ZFS send replication to


----- Original Message -----
From: "Vossen JP" <>
To: "Philadelphia Linux User's Group Discussion List" <>
Sent: Thursday, March 2, 2017 1:44:48 PM
Subject: Re: [PLUG] openATTIC?

Thanks Lee, that's about what I got out of the docs too.  It's not my
call, it's IT at $WORK, but I was wondering if anyone had run into it.
Guess not.

On 02/25/2017 11:10 AM, Lee H. Marzke wrote:
Interesting find.

Just reading the docs,

It seems to be package based and installs on Debian Jessie, RHEL7, Ubuntu 14.04,
Supports ZFS, Linux LVM,  DRBD,  Ceph object storage.

After living with some bugs in FreeNAS that caused random crashes ( 1 / week ) ,
I'd be
concerned about stability for any new project.   My FreeNAS is now stable on
9.10.  FYI
the FreeNAS 10 is at Beta 2,  and has much more support for BSD jails.

My use case is running numerous VMware ESXi VM's stablity is important to me.
If you need
object storage or are not running VMware ESX this may not be important to you.

My older FreeNAS unit would crash ( may have been related to a single plug-in
jail I was using ), and
after it rebooted the ESXi VM's would recover and I never new about the problem
for a few months.
Seems my combination of NFS hard mounts to ESXi ,  and Sync writes, allowed ESXi
VM's to
pick up where they left and were pretty much un-affected by FreeNAs being down
for 10 min.

I'd think that supporting one OS build would be more likely to be stable than
a bunch of OS's with packages.

OpenAttic seems to have more features than FreeNAS ,  but I don't know if that
is a benefit or not,  as your not
likely to use more than a few of the storage systems.

FreeNAS doesn't have DRBD,  but of course has ZFS send/receive.

A quick look at OpenAttic  shows no support listed for ZFS snapshot replication
( other than the base command-line ZFS send
command )  Replication requires orchestration of creating snaps,  replication
and deleting them, so you would have to write
all this yourself or find a solution that plugs into OpenAttic.   Seem like a
lot of usability features are just missing - but
I'd have to look at the real GUI to be sure.   Perhaps they may add these
features in time.

From a quick look at the GUI preview, it seem to only report disks/pools,  so I
assume all change are done via
the command line.  The GUI download says it's in development (  so  you have to
ask what kind of bugs show up when
the gui and other parts are released seperately )

For backup/replication of FreeNAS,  I've been using ,  as they
switched their whole infrastructure over to
ZFS,  and now provide ZFS snapshot replication ( that works transparently with
FreeNAS ).   Their entry level 1TB account
supports this now.  So you cat get real SAN replication ( with guest quiesce )
to a low cost rsync account for very low cost.

FreeNAs has integration with vSphere API's for those who care.   For instance
FreeNAS snapshots can trigger a prior vSPhere snap
which triggers a OS quiese via VMware Tools  in Windows or linux guests.   So
you FreeNAs snaps may be able to get consistent
copies of running DB's.


----- Original Message -----
From: "Vossen JP" <>
To: "Philadelphia Linux User's Group Discussion List"
Sent: Saturday, February 25, 2017 12:50:56 AM
Subject: [PLUG] openATTIC?

Anyone using or heard of

openATTIC — the only storage system you'll ever need
create and manage storage ... with open source on linux ... via a simple
user interface

I've used before and that worked very well.
openATTIC seems slicker in some ways, but it's installed on top of a
random Linux OS, not basically a FreeBSD appliance like FreeNAS is.


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