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Your question is difficult to parse. Typically RAID and JBOD are mutually exclusive. By "flash-backed", do you mean a battery backup unit (BBU) on your RAID controller? On Mon, Apr 9, 2018 at 8:49 AM, Vincent Royer <vincent at epicenergy.ca> wrote: > >> Is a flash-backed Raid required for JBOD, and should it be 1gb, 2, or 4gb >> flash? >> > > Is anyone able to clarify this requirement for me? > > > _______________________________________________ > Gluster-users ma...

Hi, Trying to make the most of a limited budget. I need fast I/O for operations under 4MB, and high availability of VMs in an Ovirt cluster. I Have 3 nodes running Ovirt and want to rebuild them with hardware for converging storage. Should I use 2 960GB SSDs in RAID1 in each node, replica 3? Or can I get away with 1 larger SSD per node, JBOD, replica 3? Is a flash-backed Raid required for

On 09/04/18 19:02, Vincent Royer wrote: > Thanks, > > I suppose what I'm trying to gain is some clarity on what choice is > best for a given application.? How do I know if it's better for me to > use a raid card or not, to include flash-cache on it or not, to use > ZFS or not, when combined with a smal...

...can make use of battery-backed flash-based Cache when the disks are presented by the RAID card in JBOD. The Hardware vendor asked "Do you know if Gluster makes use of flash-cache in JBOD?" If it does, I'm not certain how the size of this flash cache affects the operation. *Vincent Royer* *778-825-1057* <http://www.epicenergy.ca/> *SUSTAINABLE MOBILE ENERGY SOLUTIONS* On Mon, Apr 9, 2018 at 10:34 AM, Alex Chekholko <alex at calicolabs.com> wrote: > Your question is difficult to parse. Typically RAID and JBOD are mutually > exclusive. By "flash-backed&...

On 09/04/18 16:49, Vincent Royer wrote: > > > Is a flash-backed Raid required for JBOD, and should it be 1gb, 2, > or 4gb flash? > > RAID and JBOD are completely different things. JBODs are just that, bunches of disks, and they don't have any cache above them in hardware. If you're going to use...

...or two, or many more if that is "what is required". But I don't want to waste money... I like the idea of forgoing the RAID cards as they are quite expensive, especially the capacitor backed ones. The onboard controller can handle JBOD just fine, if Gluster is OK with it! *Vincent Royer* *778-825-1057* <http://www.epicenergy.ca/> *SUSTAINABLE MOBILE ENERGY SOLUTIONS* On Mon, Apr 9, 2018 at 11:25 AM, Alex Crow <acrow at integrafin.co.uk> wrote: > On 09/04/18 19:02, Vincent Royer wrote: > > Thanks, > > I suppose what I'm trying to gain is some c...

> > > Is a flash-backed Raid required for JBOD, and should it be 1gb, 2, or 4gb > flash? > Is anyone able to clarify this requirement for me? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20180409/0b7677ce/attachment.html>

.../sec %CP zfs-server 8G 604940 79 510410 87 1393862 99 3164 91 Latency 99545us 100ms 247us 152ms Just for fun from one of the servers showing base load and this testing: ?????????????????????????? > From: Vincent Royer <vincent at epicenergy.ca> > Subject: Re: [Gluster-users] Finding performance bottlenecks > Date: May 3, 2018 at 1:58:03 PM CDT > To: tony at hoyle.me.uk > Cc: gluster-users at gluster.org > > It worries me how many threads talk about low performance. I'm about to buil...

...acity requirement is around <1TB. With a modern SSD, you'll get something like 40k theoretical IOPs for 4k I/O size. You don't mention budget. What is your budget? You mention "4MB operations", where is that requirement coming from? On Wed, Apr 4, 2018 at 12:41 PM, Vincent Royer <vincent at epicenergy.ca> wrote: > Hi, > > Trying to make the most of a limited budget. I need fast I/O for > operations under 4MB, and high availability of VMs in an Ovirt cluster. > > I Have 3 nodes running Ovirt and want to rebuild them with hardware for > convergin...

...How do I know if it's better for me to use a raid card or not, to include flash-cache on it or not, to use ZFS or not, when combined with a small number of SSDs in Replica 3. On Mon, Apr 9, 2018 at 10:49 AM, Alex Crow <acrow at integrafin.co.uk> wrote: > On 09/04/18 16:49, Vincent Royer wrote: > > >> Is a flash-backed Raid required for JBOD, and should it be 1gb, 2, or 4gb >> flash? >> > > RAID and JBOD are completely different things. JBODs are just that, > bunches of disks, and they don't have any cache above them in hardware. If > you'...

...worries me how many threads talk about low performance. I'm about to build out a replica 3 setup and run Ovirt with a bunch of Windows VMs. Are the issues Tony is experiencing "normal" for Gluster? Does anyone here have a system with windows VMs and have good performance? *Vincent Royer* *778-825-1057* <http://www.epicenergy.ca/> *SUSTAINABLE MOBILE ENERGY SOLUTIONS* On Wed, May 2, 2018 at 7:52 AM Tony Hoyle <tony at hoyle.me.uk> wrote: > On 01/05/2018 02:27, Thing wrote: > > Hi, > > > > So is the KVM or Vmware as the host(s)? I basically...

On 01/05/2018 02:27, Thing wrote: > Hi, > > So is the KVM or Vmware as the host(s)?? I basically have the same setup > ie 3 x 1TB "raid1" nodes and VMs, but 1gb networking.? I do notice with > vmware using NFS disk was pretty slow (40% of a single disk) but this > was over 1gb networking which was clearly saturating.? Hence I am moving > to KVM to use glusterfs

Working on Agile web development with rails, 3rd edition. Every time I put <%= render(:partial => "cart" , :object => @cart) %> in store.html.erb, it makes a "</div>" disappear(well, it doesn''t show up when I check with firebug). When I take this piece of code out, the display returns to normal. I also tried moving it to the end of the page

I wondered if anyone could help me with turning the following in ERB into HAML. I''m VERY new with HAML: ---- <div class="block-element span-7 colborder"> <span class="rightside blue-hue no_decor"><%= link_to "New Order", new_order_path, :remote => true %></span> <h3>Today''s Activity</h3> <hr>

...l.com> (AT91) Nicolas Kaiser <nikai@nikai.net> Nicolas Kalkhof nkalkhof()at()web.de Nicolas Palix <nicolas.palix@imag.fr> Nicolas Pitre Nicolas Pitre <nico@fluxnic.net> Nicolas Pitre <nico@linaro.org> Nicolas Pitre <nicolas.pitre@linaro.org> Nicolas Royer <nicolas@eukrea.com> Nicolas Schichan <nschichan@freebox.fr> Nicolas Thery <nicolas.thery@st.com> Niels de Vos <ndevos@redhat.com> Niels Ole Salscheider <niels_ole@salscheider-online.de> Nigel Cunningham <nigel@tuxonice.net> Nigel Kirkland <nigel.k...

...l.com> (AT91) Nicolas Kaiser <nikai@nikai.net> Nicolas Kalkhof nkalkhof()at()web.de Nicolas Palix <nicolas.palix@imag.fr> Nicolas Pitre Nicolas Pitre <nico@fluxnic.net> Nicolas Pitre <nico@linaro.org> Nicolas Pitre <nicolas.pitre@linaro.org> Nicolas Royer <nicolas@eukrea.com> Nicolas Schichan <nschichan@freebox.fr> Nicolas Thery <nicolas.thery@st.com> Niels de Vos <ndevos@redhat.com> Niels Ole Salscheider <niels_ole@salscheider-online.de> Nigel Cunningham <nigel@tuxonice.net> Nigel Kirkland <nigel.k...

...l.com> (AT91) Nicolas Kaiser <nikai@nikai.net> Nicolas Kalkhof nkalkhof()at()web.de Nicolas Palix <nicolas.palix@imag.fr> Nicolas Pitre Nicolas Pitre <nico@fluxnic.net> Nicolas Pitre <nico@linaro.org> Nicolas Pitre <nicolas.pitre@linaro.org> Nicolas Royer <nicolas@eukrea.com> Nicolas Schichan <nschichan@freebox.fr> Nicolas Thery <nicolas.thery@st.com> Niels de Vos <ndevos@redhat.com> Niels Ole Salscheider <niels_ole@salscheider-online.de> Nigel Cunningham <nigel@tuxonice.net> Nigel Kirkland <nigel.k...

...; # atmel_lcdfb.c Nicolas Kaiser <nikai@nikai.net> Nicolas Kalkhof nkalkhof()at()web.de Nicolas Palix <nicolas.palix@imag.fr> Nicolas Pitre Nicolas Pitre <nico@fluxnic.net> Nicolas Pitre <nico@linaro.org> Nicolas Pitre <nicolas.pitre@linaro.org> Nicolas Royer <nicolas@eukrea.com> Nicolas Schichan <nschichan@freebox.fr> Nicolas Thery <nicolas.thery@st.com> Niels de Vos <ndevos@redhat.com> Niels Ole Salscheider <niels_ole@salscheider-online.de> Nigel Cunningham <nigel@tuxonice.net> Nigel Kirkland <nigel.k...

...; # atmel_lcdfb.c Nicolas Kaiser <nikai@nikai.net> Nicolas Kalkhof nkalkhof()at()web.de Nicolas Palix <nicolas.palix@imag.fr> Nicolas Pitre Nicolas Pitre <nico@fluxnic.net> Nicolas Pitre <nico@linaro.org> Nicolas Pitre <nicolas.pitre@linaro.org> Nicolas Royer <nicolas@eukrea.com> Nicolas Schichan <nschichan@freebox.fr> Nicolas Thery <nicolas.thery@st.com> Niels de Vos <ndevos@redhat.com> Niels Ole Salscheider <niels_ole@salscheider-online.de> Nigel Cunningham <nigel@tuxonice.net> Nigel Kirkland <nigel.k...

...; # atmel_lcdfb.c Nicolas Kaiser <nikai@nikai.net> Nicolas Kalkhof nkalkhof()at()web.de Nicolas Palix <nicolas.palix@imag.fr> Nicolas Pitre Nicolas Pitre <nico@fluxnic.net> Nicolas Pitre <nico@linaro.org> Nicolas Pitre <nicolas.pitre@linaro.org> Nicolas Royer <nicolas@eukrea.com> Nicolas Schichan <nschichan@freebox.fr> Nicolas Thery <nicolas.thery@st.com> Niels de Vos <ndevos@redhat.com> Niels Ole Salscheider <niels_ole@salscheider-online.de> Nigel Cunningham <nigel@tuxonice.net> Nigel Kirkland <nigel.k...