Xen Orchestra

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  Merging XO forum here
  • olivierlambert  

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  ?? Why? I'll merge XO forum into this cat, not replacing anything. Also NodeBB works well, it's one of the less crappy forum software I know.
• R

  XOA - backups skipped to protect VDI chain
  • robert wild  

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  Orphaned VDIs are something else, that might indeed need to coalesce after that. But that won't change the principle: clean everything first.
• 

  Having issue registering xo-cli
  • talbaror  

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  You need a space between the URL and the user name.
• F

  High Availability setup
  • fred974  

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  This guide shows an old UI of XO, but you can always set the HA for the VM in its Advanced Tab. HA at the pool level might be enabled using the command displayed in the blog post. So far enabling HA on the pool level isn't exposed in XO because HA is causing more issues than it solves in general. If you decide to enable it on the CLI, it means that you probably understand what you do. If you don't know where to find a SR UUID, using HA might expose you to VERY bad experience. BTW, you can find it in SR view, click on the SR you want to use as HA SR, you'll see the UUID just beneath the name. As someone said in this forum few weeks ago: Everybody wants HA but not everyone needs it
• F

  where is the Home Server option in XO
  • fred974  

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  Also please note that's not a guarantee to boot the VM on this host. In fact, there's no way to be 100% sure it will. It's just than now XCP-ng will do its best to honor this. But eg, if there's not enough RAM on the host, then it will boot on another host of the pool.
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  XO to manage KVM?
  • beagle  

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  I think, solution you are looking for is direct disk access. It's possible. I use it for my file server VM (FreeNAS) with five 4TB wd red drives (zfs). Passthrough entire PCI storage card is better, but even cheap server motherboards have 6 sata channels (one for dom0 ssd, and five for file server storage). This is my example (and my UUIDs) mkdir /srv/direct-sata_sr xe sr-create name-label=”Direct SATA SR” name-description=”SATA links to passthrough direct to VMs” type=udev content-type=disk device-config:location=/srv/direct-sata_sr New UUID generated on sr creation ba9b124c-c5ac-2c0b-7b1f-014d9cezzzzz ln -s /dev/disk/by-id/<disk id> /srv/direct-sata_sr/<disk id> ln -s /dev/disk/by-id/ata-WDC_WD5000BEVT-26A0RT0_WD-WXE1A10V7603 /srv/direct-sata_sr/ata-WDC_WD5000BEVT-26A0RT0_WD-WXE1A10V7603 xe sr-scan uuid=ba9b124c-c5ac-2c0b-7b1f-014d9cezzzzz xe vdi-list sr-uuid=ba9b124c-c5ac-2c0b-7b1f-014d9cezzzzz Good luck.
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  Extrlemy slow backup speec = about few MB/s
  • akurzawa  

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  Hi Olivier, yeap, xo from sources installed in mid december, so fairly new. It's running on a VM with 4 vCPUS of xeon x5355 @ 2.66 Ghz
• A

  Backup NG: "value" argument is out of bounds
  • asai  

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  Here is the failed backup log: { "data": { "type": "VM", "id": "e93c337e-3532-c5fe-6442-25587d65c565" }, "id": "1578874920072", "message": "Starting backup of Calypso (8341bb16-5e0f-42b8-ac81-a68ac532d42b)", "start": 1578874920072, "status": "failure", "tasks": [ { "id": "1578874920072:0", "message": "snapshot", "start": 1578874920072, "status": "success", "end": 1578874931254, "result": "ab38fd4d-6d97-d630-f8d8-808b878a9c17" }, { "id": "1578874931274", "message": "add metadata to snapshot", "start": 1578874931274, "status": "success", "end": 1578874931320 }, { "id": "1578874931449", "message": "waiting for uptodate snapshot record", "start": 1578874931449, "status": "success", "end": 1578874931676 }, { "id": "1578874932280", "message": "start snapshot export", "start": 1578874932280, "status": "success", "end": 1578874932280 }, { "data": { "id": "68c50187-ec00-45b8-9ada-fda127cf1d9c", "isFull": false, "type": "remote" }, "id": "1578874932280:1", "message": "export", "start": 1578874932280, "status": "failure", "tasks": [ { "id": "1578874932377", "message": "transfer", "start": 1578874932377, "status": "success", "end": 1578879743091, "result": { "size": 19443764736 } }, { "id": "1578879743101", "message": "merge", "start": 1578879743101, "status": "failure", "end": 1578882356886, "result": { "type": "TypeError", "message": "\"value\" argument is out of bounds", "name": "TypeError", "stack": "TypeError: \"value\" argument is out of bounds\n at checkInt (buffer.js:1185:11)\n at Buffer.writeUInt32BE (buffer.js:1278:5)\n at Vhd._setBatEntry (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:236:16)\n at Vhd._createBlock (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:243:103)\n at Vhd._writeEntireBlock (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:265:30)\n at Vhd.coalesceBlock (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:319:20)\n at <anonymous>" } } ], "end": 1578882356886, "result": { "type": "TypeError", "message": "\"value\" argument is out of bounds", "name": "TypeError", "stack": "TypeError: \"value\" argument is out of bounds\n at checkInt (buffer.js:1185:11)\n at Buffer.writeUInt32BE (buffer.js:1278:5)\n at Vhd._setBatEntry (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:236:16)\n at Vhd._createBlock (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:243:103)\n at Vhd._writeEntireBlock (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:265:30)\n at Vhd.coalesceBlock (/opt/xen-orchestra/packages/vhd-lib/dist/vhd.js:319:20)\n at <anonymous>" } }, { "id": "1578882356898", "message": "set snapshot.other_config[xo:backup:exported]", "start": 1578882356898, "status": "success", "end": 1578882356907 } ], "end": 1578882361453 },
• L

  Problem with file level restore from delta backup from LVM parition
  • lukas  

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  We don't have other reports of failed restore on LVM, so it slipped out of the radar. Ideally, a support ticket might be better to keep it in the TODO
• P

  SOLVED Citrix Hypervisor 8.1 Snapshot / Backup problem
  • PrzemoPOL  

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  Hi, See https://github.com/vatesfr/xen-orchestra/issues/4735 olivierlambert created this issue in vatesfr/xen-orchestra open VM.snapshot_with_quiesce fails on Citrix Hypervisor 8.1 #4735
• X

  Xen Orchestra reporting high disk usage (thin provisioned VDI)
  • XiovV  

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  @olivierlambert I have assigned 1.9TiB to a VM and XOA is saying the VM is using 1.07TiB, but df -h on the VM is saying that I'm using 418GB. So according to XOA I should have about 800GiB left but according to my VM I should have 1.4TB left, there's a pretty big 600GB difference here.
• A

  Enable VGA Graphics in Xcp-ng Center for a particular VM.
  • amarnath  

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• K

  HA questions
  • Kiotsoukis  

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  With iSCSI-HA you just need an IP address that is always reachable from every node. We use the IP address of a managed switch for that. No XCP-ng, no VMs, just a reachable IP address.
• S

  LDAP extract user from specified field?
  • sborrill  

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  I actually like the current implementation. I am currently using this setup to allow an admin user to have 2 accounts managed by one authentication back-end. One account is a typical self-service user to consume resources according to ACL/Self-service rule sets The other account is used to manage Admin features like backups and XO settings (environment with multiple admins who also consume resources from a shared pool with other departments/teams) I use separate accounts so when admin users create VMs it can go to the appropriate self-service container. I hope any fixes to address the above concern doesn't completely remote this capability or at least adds another method of achieving this.
• S

  Nag-Screens
  • smschumacher  

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  That's not true: it happens that people doesn't know there's service coming with a software. It's not a nag screen, it shows/explains that support is available. Also, if all companies which can afford it just purchased it, believe me we could have more subscribers Reality is never black or white, so it's a balanced choice to make people understand there's a cost behind the software, and if you are a company, purchasing support will help the project too. Note: we don't have official numbers because there's no tracking whatsoever in version available on GitHub, but we have often some "surprises", especially since XCP-ng (people asking for help on XCP-ng, paying a reasonable amount for XCP-ng Support, and we discover XO is in production from the sources on this infrastructure: if what you said is true, that wouldn't exist at all) Regarding the removal of those messages, if you can afford to take time to remove it because… because, you can (but I don't see the point, feel free to explain what's the issue with those messages displayed), well, good for you, you are indeed not the target anyway
• A

  uninstall xen orchestra in ubuntu 18.04.
  • amarnath  

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• C

  SOLVED Monitor XOA Disk Space
  • christianreimold  

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  easy as that Thanks for you help.
• K

  XOA load balancing
  • Kiotsoukis  

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  It's a ticket with XOA support, which is private/per user.
• R

  UNSOLVED Broken Host Consoles in fresh xcp-ng 8 installation. VM consoles work.
  display bugs console gpu • • rjt  

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  @olivierlambert The /var/lib/xcp/state.db is basically a single line of xml with a half-million characters. The old egrep or sed or vi searching did not seem to narrow things down likely they normally do. Used xmllint to put the db in a pretty format with line breaks and indentation. Then vi to edit. Of course, as soon as i start xapi, those changes are lost. I assume there must be a massive speedup in lookups when all on a single line. [23:59 xen-B xcp]# pushd /var/lib/xcp/ [23:59 xen-B xcp]# systemctl stop xapi [23:59 xen-B xcp]# cp state.db ./state-YYYYMMDD-HHMM.db [23:59 xen-B xcp]# egrep '(192.168.2.141)' ./state.db | wc 1 11757 454034 [23:59 xen-B xcp]# echo " :( 1 line with over 11,000 words :(" [23:59 xen-B xcp]# xmllint --format state.db >> state.xmllint--pretty.db [23:59 xen-B xcp]# egrep '(192.168.2.141)' ./state.db | wc 10 193 13526 [23:59 xen-B xcp]# echo "i can deal with 193 words :) and edited with vi" [23:59 xen-B xcp]# mv state.xmllint--pretty.db ./state.db [23:59 xen-B xcp]# systemctl start xapi xe console-list indicates the the proper IP addresses: [23:59 xen-B xcp]# xe console-list vm-name-label=Control\ domain\ on\ host:\ xen-B uuid ( RO) : d5039d1a-64ad-c8a9-a309-51e568ba2926 vm-uuid ( RO): 1593da28-8e85-4252-878e-778eb414c549 vm-name-label ( RO): Control domain on host: xen-B protocol ( RO): VT100 location ( RO): https://192.168.10.192/console?ref=OpaqueRef:7be93ca1-76cf-4649-8276-74891eac0a06 uuid ( RO) : 7bcf725e-ae83-cf6f-7997-7dd63469929f vm-uuid ( RO): 1593da28-8e85-4252-878e-778eb414c549 vm-name-label ( RO): Control domain on host: xen-B protocol ( RO): RFB location ( RO): https://192.168.10.192/console?ref=OpaqueRef:1361b935-2d25-4929-9b27-4b0483cbb0f7 [00:00 xen-B xcp]# ip a show dev xenbr0 | egrep inet inet 192.168.10.192/16 brd 192.168.255.255 scope global dynamic xenbr0 But there is still a blank host console in both XOA and xcp center. Suppose those OpaqueRefs have to be fixed up as well. EFI starting crashing on this r720, so having many other severe issues to deal with.
• S

  SOLVED building from source - yarn fetch error
  • skottib  

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  guys, it is solved, but thats something i will file again under technological harrassment. it was a DNS Problem. the dns-servers at my hosting provider woudnt resolve properly, only when I forced googles DNS servers onto it did it work. thanks for the push