[ovirt-users] Re: Terrible Disk Performance on Windows 10 VM
The storage domain lists the type as "Local on Host". It's been a while since I set it up, but I thought the engine deployment had an option for local storage. The VM's reside in a directory under /opt on the Physical Host. https://i.postimg.cc/z3mMNj3J/Capture.png I forget which version I actually deployed.. but it's at 4.4.5.11-1.el8 now. Prior to installing oVirt, I was using KVM, but where I worked at the time migrated from Oracle's old 'OVM' to 'OLVM' which is basically an older version of oVirt with an Oracle icon :) The Oracle version wouldn't allow for local storage in any form. So I was pleasantly surprised that the version of oVirt I installed at home did allow it. I already had a NFS share setup anticipating that I would need to use NFS for my home setup, but didn't actually need it. Thing is.. I'm just spoiled with SSD data transfer/access/write speeds now, lol. I do keep various data I don't access constantly on some spinning disks, like media, ISO files and such. But for OS booting speeds - completely accustomed to SSD! I'll be looking forward to using those SSDs I have. They have been sitting for almost a year now in a drawer. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/TNPZH3DAROIZ7IGCFHJGD7XNWOFIYW26/
[ovirt-users] Re: Terrible Disk Performance on Windows 10 VM
When I did the VM this time, I did pre-allocate all of the space. The first time, I was just curious if Windows would even run ok under oVirt and it does appear it will. Next.. I need to get a couple Solaris VMs actually working. I've seen some 'hacks' out there that others have reported success with. Just haven't had much time to mess with that also. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/7KPG76ZNWHHVUUK7KDT2EP4DEJ7FOAIU/
[ovirt-users] Re: Terrible Disk Performance on Windows 10 VM
Yes - local as in 5400 RPM SATA - standard desktop, slow storage.. :) It's still 'slow' being 5400 RPM SATA, but after setting the new VM to 'VirtIO-SCSI' and loading the driver, the performance is 'as expected'. I don't notice with with the Linux VMs because they don't do anything that requires a lot of disk I/O. Mostly Ansible/Python education and such. https://i.postimg.cc/28f764yb/Untitled.png I actually have some super fast Serial SCSI SSD drives I am going to use in the future. A storage vendor where I worked at ordered a bunch by mistake to upgrade our storage array and then left them sitting on-site for like 9 months. I contacted them to remind them we still had them in our data center and asked if they wanted to come and get them. I joked with our field engineer and told him if they didn't want them, I could find a use for them! He actually contacted his manager who gave us approval to just 'dispose' of them. So I thought why not recycle them? :) I'm in the process of moving soon for a new job. Once I get settled, I'm going to upgrade the storage I use for VMs. Either to those SSDs or maybe a small NAS device. Ideally.. a NAS device that can support Serial SCSI. I'll need to get a controller and a cable for them, but considering the performance... it should be well worth it. And no - I didn't get fired for swiping the drives! Too many years invested in IT for something that stupid and I'm just not that kind of person anyway. I took a position that's a bit more 'administrative' and less technical; but with better pay, so I want to keep my tech skills sharp, just because I enjoy it. This is just a 'home lab' - nothing that supports anything even remotely important. I'm so used to SSD now.. my desktop OS is on SSD, my CentOS machine is on SSD.. putting Windows on spinning platters is just painful anymore! ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/5EVF6FR7Z46A2PI26EYJGBJBFF7LUGVX/
[ovirt-users] Re: Terrible Disk Performance on Windows 10 VM
Re-installation using the 'VirtIO-SCSI' interface along with the appropriate driver installs took care of the issue! It's still a little bit slow - but what I would expect for a 5400 RPM drive :) The performance had improved greatly! Thanks for the suggestions! ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/FFYNR43QMGCI75YYGOB4JB3VQE6HBOBJ/
[ovirt-users] Re: Terrible Disk Performance on Windows 10 VM
This is a simple one desktop setup I use at home for being a nerd :)
So it's a single host 'cluster' using local storage.
Host Info:
CentOS Linux 8 - 4.18.0-305.10.2.el8_4.x86_64 (I keep fairly well updated)
Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz [Kaby Lake] {Skylake}, 14nm
The disk it's on is: WDC WD40EZRZ-00G (5400 RPM platter disk) - it's not the
fastest thing in the world, but it should be sufficient.
VM info:
Windows 10 Professional (Desktop not server)
6144 MB of RAM
2 Virtual CPUS
- Some settings I ran across for 'Performance' mode and a couple I had seen on
some similar issues (the similar issues were quite dated)
Running in headless mode
I/O Threads enabled = 1
Multi-Queues enabled
Virt-IO-SCSI enabled
Random Number generator enabled
Added a custom property of 'viodiskcache' = writeback (Didn't seem to make any
significant improvement)
As I type this though - I was going to add this link as it's what I followed to
install the storage driver during the Windows install and then in the OS after
that:
https://access.redhat.com/solutions/17463
I did notice something.. it says to create a new VM with the 'VirtIO disk
interface' and I just noted my VM is setup as 'SATA'.
Perhaps that is it. This is just my first attempt at running something other
than a Linux Distro under oVirt. When I first installed the Windows guest, I
didn't have the Virt-IO package downloaded initially. When Windows couldn't
find a storage driver, I found this info out.
I think I'll deploy a new Windows guest and try the 'VirtIO-SCSI' interface and
see if my performance is any better. It's just a default install of Windows at
this point, so that'll be easy. :)
Will update this thread either way!
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[ovirt-users] Terrible Disk Performance on Windows 10 VM
I recently installed a Windows 10 VM under oVirt 4.4.5.11-1.el8 Also installed the drivers using "virtio-win-1.9.16.iso" (Then re-installed them after updates just in case it helped) I found a similar complaint with VMWare (https://communities.vmware.com/t5/VMware-Workstation-Pro/vmware-workstation-100-disk-usage/td-p/2704870) So I looked into that and made a registry change for the AHCI controller, as well as setting the 'viodiskcache' to write-back (Seen in another thread on here) - those two changes seemed to help.. marginally. But not much at all. When I do just about anything, disk usage spikes to 100% and stays there for quite a while. Write speeds rarely break 100kb/sec. Not even sure what to look for next. My Linux VMs don't seem to have this issue and the host it's running on is barely working at all. CPU and memory stay close to unused. oVirt didn't show a lot, but in task manager in the Windows VM - you can see disk queue just pegged completely. I've given the VM 6GB of RAM, so that's not it. I even turned off paging in the Windows VM as well, to no avail. This is an example of disk usage, just opening 'Groove Music' for the first time. https://i.postimg.cc/FRLq28Mw/Disk-Activity.png Any ideas? :) ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/TL7ADS2SY6VJE3MUCT3FJTCCGK6CEKPX/
[ovirt-users] Re: not able to upload disks, iso - Connection to ovirt-imageio service has failed. Ensure that ovirt-engine certificate is registered as a valid CA in the browser.
You are a saint and a scholar! This 100% fixed it for me. (Connection to ovirt-imageio service has failed. Ensure that ovirt-engine certificate is registered as a valid CA in the browser). oVirt version 4.4.5.11-1.el8 and using Firefox 78.9.0esr (64-bit) I tried to import the cert file; that worked just fine. But to no avail! I'm running an 'all-in-one' setup on CentOS 8 Stream, 4.18.0-240.22.1.el8_3.x86_64 I ran into some older posts with workarounds for various bugs, but most were fairly old and I suspected there was a cleaner way to get this working. This is it. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/YTE5EZBBXK6P7YI3H5TSWVRGGCJNTKKY/
