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    nikade

    @nikade

    Top contributor

    Started using Xen on top of debian around 2004, virtualization was always something that interested me due to the fact that you can dramaticly increase density and better maximise use of your hardware.
    In 2010 I was hired to insource a smaller infrastructure and to ease management and use something more "enterprise"-like we started using XenServer.

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    Best posts made by nikade

    • RE: XCP-ng 8.2.1 (maintenance update) - ready for testing

      Hi everyone,

      I just installed this 8.2.1 a Dell R630 and the installer was very smooth.
      We chose to make a new installation since the host was running XS 7.2 and we wanted a fresh install, with that came the opportunity to leverage EXT and thin provisioning which seems to work just as it should.

      We're also mounting a NFS SR for VM disks which works fine as well. I'll have to wait and see, but hopefully the problem with /var/log/snmpd.log is resolved now and no more alerts regarding disk usage 🙂

      posted in News
      nikadeN
      nikade
    • RE: Veeam and XCP-ng

      We're using Veeam for our VMware platform and XOA for our XCP platform and I have to say I prefer XOA. Why may one ask?
      Well it is dead simple, its not bloated, you have a ton of options when it comes to configuration, destination, scheduling and so on.

      Veeam on the other hand is A LOT faster, we're using a 10G link to our backup site and we're seeing speeds over 7Gbit/s when backing up our VMware platform and I know this is something Vates is working hard on improving in XOA.
      Veeam also has application aware backups which is a big deal when you're running MSSQL inside your VM's - I dont think there is any plans from Vates in supporting this and this might be a big deal for customers comming from the VMware and Veeam-side.

      posted in XCP-ng
      nikadeN
      nikade
    • RE: XOA: backup Active Directory vm

      According to Microsoft you need to use their built in backup feature or a software that supports AD and VSS which will tell the VM OS that it is going to be backed up.
      Unless you do this there might be corruption of the AD Databases according to Microsoft.

      ALL THO we've been backing up our AD servers with XOA snapshots (Both normal backup and incremental) and had only 1 issue since we started using XOA in 2016.
      Since that issue we also use a guest agent (From Ahsay CBS) that makes a Windows System State backup and Windows System Backup.

      More info about that can be found here:

      https://wiki.ahsay.com/doku.php?id=public:version_9:client:9447_system_state_backup_vs_system_backup

      posted in Backup
      nikadeN
      nikade
    • RE: Join our great support team!

      A great opportunity for anyone who is into xcp, xoa and opensource software to join a great company 🙂

      posted in News
      nikadeN
      nikade
    • RE: XCP-ng 8.2.1 (maintenance update) - ready for testing

      @olivierlambert said in XCP-ng 8.2.1 (maintenance update) - ready for testing:

      Thanks a lot @nikade for your feedback! (also I love your avatar!)

      Yeah, I gotta have my suit on my tux 😉

      I wanted to inform that I've tried iSCSI with multipathing as well and it works fine.
      So far everything we need in our general production-environment seems to be working as it should.

      posted in News
      nikadeN
      nikade
    • RE: Sdn controller and physical network

      @blackliner said in Sdn controller and physical network:

      @nikade How do you "pair" the XCP-ng SDN with your routing setup?

      You cant/dont, you'll have to setup each private network on the vyos router and then have the vm private network routed through it manually.

      For example if you have private network 1 with subnet 192.168.1.0/24 you'd have to add this network to the vyos router and assign 192.168.1.1/24 on the router.
      Then set 192.168.1.1 as default gateway in your vm's which uses this network.

      Then you'll setup ospf or bgp on the vyos router manually with your upstream border/core-router or firewall. If the subnet is a private subnet you'll need to setup NAT as well somewhere before it reaches internet to NAT traffic from 192.168.1.0/24.

      posted in Advanced features
      nikadeN
      nikade
    • RE: What should i expect from VM migration performance from Xen-ng ?

      @Greg_E said in What should i expect from VM migration performance from Xen-ng ?:

      @nikade

      I've spent a bunch of time trying to find some dark magic to making the VDI migration faster, so far nothing. My VM (memory) migration is fast enough that I'm not concerned right now. and don't have any testing to show for it.

      Currently migrating the test VDI from storage1 to storage2 (again) and getting an average of 400/400mbps (lower case m and b). If I do three VDI at once, I can get over a gigbit and sometimes close to 2 gigabit.

      It's either SMAPIv1 or it is a file "block" size issue, bigger blocks can get me benchmarks up to 600MBps to almost 700MBps (capital M and B) on my slow storage over a 10gbps network. Testing this with XCP-NG 8.3 release to see if anything changed from the Beta, so far all is the same. Also all testing done with thin provisioned file shares (SMB and NFS). If I could get half my maximum tests for the VDI migration, I'd be happy. In fact I'm extremely pleased that my storage can go as fast as it is showing, it's all old stuff on SATA.

      I have a whole thread on this testing if you want to read more.

      migrate-benchmark.png

      You can see the migrate which was 400/400 and then the benchmark across the ethernet interface of my Truenas, this example was migrate from SMB to NFS, and benchmark on the NFS. Settings for that NFS are in the thread mentioned and certainly my fastest non-real world performance to date.

      That's impressive!
      We're not seeing as high speeds are you are, we have 3 different storages, mostly doing NFS tho. We're still running 8.2.0 but I dont really think it matters as the issue is most likely tied to the SMAPIv1.

      We also noted that it goes a bit faster when doing 3-4 VDI's in parallell, but the individual speed per migration is about the same.

      posted in Advanced features
      nikadeN
      nikade
    • RE: XO - Restore Health Check

      @planedrop said in XO - Restore Health Check:

      I can confirm this is the case for me too, not a huge deal, but would be kinda nice if it could keep track of the name.

      Thanks for verifying, it is probably an easy fix for the vates ppl 🙂

      posted in Advanced features
      nikadeN
      nikade
    • XO - Restore Health Check

      Hi everyone,

      Has anyone else tried the Restore Health Check-feature in XO to test their backups?
      I've used it now in my lab a couple of times and it works great, but one thing that bugs me out is that the name of the tested VM is no longer dispalyed after the TEST is finished because it was removed:

      7edb57c5-f1b7-47a5-bd58-f9ecde6f93db-bild.png

      Instead of listing the name of the VM it just says "VM not found!"

      We're using XO from sources:

      Xen Orchestra, commit 8b7e1
      Master, commit 587da

      posted in Advanced features
      nikadeN
      nikade
    • RE: After installing updates: 0 bytes free, Control domain memory = 0B

      @Dataslak said in After installing updates: 0 bytes free, Control domain memory = 0B:

      @nikade @olivierlambert @stormi @Danp @yann

      Just wanted to say to you all:

      Thank you for your contributions and kind helpful assistance which has helped me through this crisis.

      I would have been in deep trouble without you. I respect your expertise, and appreciate deeply that you are working so hard to help us dumb users. I have learned a lot, and hope one day to become skilled enough to at least help other new users on this forum.

      Best wishes
      Aslak

      Happy everything worked out, this is what this community is all about.
      I've gotten a lot of help and given some too, it's all about helping out with the things that you can.
      With time you'll be able to help out more and more and more 🙂

      posted in XCP-ng
      nikadeN
      nikade

    Latest posts made by nikade

    • RE: High availability - host failure number

      Think of it like this:

      If you have 4 hosts, each host maximum usage will be 25% of the total - How much of that % do you want to reserve in case of a failed host?
      Personally, I'd like to have the number set to 1 host (25%) because that means im able to use 3 hosts and the 4th hosts resources would be reserved in case of a failure.

      posted in Compute
      nikadeN
      nikade
    • RE: Sdn controller and physical network

      @blackliner said in Sdn controller and physical network:

      @nikade How do you "pair" the XCP-ng SDN with your routing setup?

      You cant/dont, you'll have to setup each private network on the vyos router and then have the vm private network routed through it manually.

      For example if you have private network 1 with subnet 192.168.1.0/24 you'd have to add this network to the vyos router and assign 192.168.1.1/24 on the router.
      Then set 192.168.1.1 as default gateway in your vm's which uses this network.

      Then you'll setup ospf or bgp on the vyos router manually with your upstream border/core-router or firewall. If the subnet is a private subnet you'll need to setup NAT as well somewhere before it reaches internet to NAT traffic from 192.168.1.0/24.

      posted in Advanced features
      nikadeN
      nikade
    • RE: Sdn controller and physical network

      You would need a router within that private vlan which also has an external network and act as a router. Something needs to act as a router between the private network and the external network, with ospf or bgp.

      We do about the same, with VyOS, and it works pretty good.

      posted in Advanced features
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      @tjkreidl said in Issue with SR and coalesce:

      @nikade Am wondering still if one of the hosts isn't connected to that SR properly. Re-creating teh SR from scratch would do the trick, but a lot of work shuffling all the VMs to different SR storage. Might be worth it, of course, if it fixes the issue.

      Yeah maybe, but I think there would be some kind of indication in XO if the SR wasn't properly mounted on one of the hosts.
      Lets see what happends, its weird indeed that its not shown.

      posted in Backup
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      @Byte_Smarter said in Issue with SR and coalesce:

      @tjkreidl

      Maybe I am reading this wrong but the SR is not there in a mount? but also it is viewable and working in XO and lists usage and all that?

      c97bef62-643d-45f8-b233-6a67f734832e-image.png

      It should definitely be listed here, I'd start over and see if it shows afterwards.
      Remember to fully destroy and remove the SR (which will obviously remove all data) and then re-create it to make sure there's no weird stuff left.

      posted in Backup
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      Something feels wrong, it writes to the log that there are 23 VDI's to be deleted on SR with uuid 6eb76845-35be-e755-4d7a-5419049aca87 but you say there's not snapshots.
      It doesn't add up or am I missing something? How many VDI's do you have on the SR?

      posted in Backup
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      That's weird indeed, I wonder what those 23 VDI's are then.
      What is the uuid of this new SR? 6eb76845-35be-e755-4d7a-5419049aca87?

      I think you can show them from the cli with the following command:
      xe sr-list params=name,uuid

      posted in Backup
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      @Byte_Smarter said in Issue with SR and coalesce:

      Mar 15 04:06:41 ops-xen2 SMGC: [19269] Found 23 VDIs for deletion:

      This is what makes me unsure, are you sure there is no snapshots on any VM's?

      posted in Backup
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      @Byte_Smarter said in Issue with SR and coalesce:

      @tjkreidl I am not sure if you saw my earlier post, I have several TB of space

      9de9fda1-999c-4a08-adbf-0de15e7a31de-image.png

      Are you sure multipathing is disabled on all hosts in the pool?
      Also, could you share a larger portion of the /var/log/SMlog ?

      posted in Backup
      nikadeN
      nikade
    • RE: Issue with SR and coalesce

      As replied by @dthenot you need to check /var/log/SMlog on all of your hosts to see which one it is failing on and why.
      If the storage filled up before this started to happend my guess is that there is something corrupted, if that's the case you might have to clean up manually.

      I've had this situation once and got help from XOA support, they had to manually clean up some old snapshots and after doing so we triggered a new coalescale (rescan the storage) which were able to clean up the queue.
      Untill that's finished I wouldn't run any backups, since that might cause more problems but also slow down the coalescale process.

      posted in Backup
      nikadeN
      nikade