On 6/13/2018 10:54 AM, Chris Friesen wrote:
Also, migration and resize are not supported for LVM-backed instances.
I proposed a patch to support them
(https://review.openstack.org/#/c/337334/) but hit issues and never got
around to fixing them up.
Yup, I guess I should have read the entire
On 6/13/2018 8:58 AM, Blair Bethwaite wrote:
Though we have not used LVM based instance storage before, are there any
significant gotchas?
I know you can't resize/cold migrate lvm-backed ephemeral root disk
instances:
On 06/13/2018 07:58 AM, Blair Bethwaite wrote:
Is the collective wisdom to use LVM based instances for these use-cases? Putting
a host filesystem with qcow2 based disk images on it can't help
performance-wise... Though we have not used LVM based instance storage before,
are there any
fio is fine with me. I'll lazily defer to your expertise on the right fio
commands to run for each case. :)
If we're going to test within the guest, that's going to introduce a new
set of variables, right? Should we settle on a standard flavor (maybe two
if we wanted to include both virtio and
Hey Joe,
Thanks! So shall we settle on fio as a standard IO micro benchmarking tool?
Seems to me the minimum we want is throughput and IOPs oriented tests for
both the guest OS workload profile and the some sort of large working set
application workload. For the latter it is probably best to
Lol! Ok, forgive me, I wasn't sure if I had regular or existential Jay on
the line :-).
On Thu., 14 Jun. 2018, 00:24 Jay Pipes, wrote:
> On 06/13/2018 10:18 AM, Blair Bethwaite wrote:
> > Hi Jay,
> >
> > Ha, I'm sure there's some wisdom hidden behind the trolling here?
>
> I wasn't trolling at
Yes, you can! The kernel documentation for read/write limits actually uses
/dev/null in the examples :)
But more seriously: while we have not architected specifically for high
performance, for the past few years, we have used a zpool of cheap spindle
disks and 1-2 SSD disks for caching. We have
On 06/13/2018 10:18 AM, Blair Bethwaite wrote:
Hi Jay,
Ha, I'm sure there's some wisdom hidden behind the trolling here?
I wasn't trolling at all. I was trying to be funny. Attempt failed I
guess :)
Best,
-jay
___
OpenStack-operators mailing
Hi Jay,
Ha, I'm sure there's some wisdom hidden behind the trolling here?
Believe me, I have tried to push these sorts of use-cases toward volume or
share storage, but in the research/science domain there is often more
accessible funding available to throw at infrastructure stop-gaps than
On 06/13/2018 09:58 AM, Blair Bethwaite wrote:
Hi all,
Wondering if anyone can share experience with architecting Nova KVM
boxes for large capacity high-performance storage? We have some
particular use-cases that want both high-IOPs and large capacity local
storage.
In the past we have
Hi all,
Wondering if anyone can share experience with architecting Nova KVM boxes
for large capacity high-performance storage? We have some particular
use-cases that want both high-IOPs and large capacity local storage.
In the past we have used bcache with an SSD based RAID0 write-through
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