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    Topics

    • S

      How to Live Migrate XOCE

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      @Danp Thank you! That's simple enough. I thought XO couldn't live migrate itself without running into an issue. Thanks again! SW
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      Live Migration Fails: MIRROR_FAILED

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      gthvn1G
      @stevewest15 Thx for SMlog. I don't see anything suspicious
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      SR NFS Creation Error 13

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      T
      I ran into this problem with a fresh install of XCP-ng and TrueNAS last night. The fix is on TrueNAS, NFS Advanced Options, set the maproot user to 'root' and maproot group to 'wheel'. By default the fields are empty.
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      Live Migration Very Slow

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      andrewperryA
      @Forza There are various topics touching on how SMAPIv1 is a bottleneck here, eg: https://xcp-ng.org/forum/topic/9389/backup-migration-performance/8 - that's probably not the best example as it is also more on backups than migration!
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      Rolling Pool Update Failed

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      Thank you all! I was on an older release of XOCE. I haven't wanted to update as the last few times I did, it broke the nightly backups. So stuck with an older version of XOCE that seems to have been stable in our environment. I updated XOCE to latest build: Xen Orchestra, commit 32228 Master, commit 32228 I was able to manually update the second host (by running yum update). Then restarted the pool master and now I'm trying to vacate VMs from second host back to master so I can reboot the second host. However the live migration seems to be taking much longer from the second host back to master. All VMs use shared storage connected via NFS to this pool. I was thinking it should just take a few minutes to do a live migrate but so far it's been 12+ minutes and it's only at 12%: [image: 1723571571077-dca691d2-5be0-41f5-8669-92cfcf5175b6-image.png] The network I selected for the live migration is a 20Gbe (bond of two 10 Gbe). UPDATE: The live migration progress sped up and it was completed in about 16 minutes instead of the 1hr it was estimating.
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      Create and Update Alerts in XO

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      olivierlambertO
      Indeed, XenCenter isn't a supported client for XCP-ng. To delete those, you need to use xe CLI. I don't remember exactly which part is used by XenCenter, might worth some community feedback or taking a look at the XenCenter code.
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      How to Extend LVM After Increasing Hard Drive in XO?

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      nikadeN
      @Danp Deleting and then re-creating doesnt always work if there's another partition (swap) after. I usually do this: fdisk -l /dev/xvda (note the end blocks of the last partition under the End column) fdisk /dev/xvda n accept the defaults except starting blocks (use next free block as starting block) w vgextend almalinux /dev/xvda3 (if thats the number you saw when creating the new partition) lvresize /dev/template-vg/almalinux-root -l +100%FREE -r
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      Installing Guest Tools on AlamaLinux 9 Issue

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      @jimmymiller Thank you! I destroyed the old VM and created a new one and then installed the guest tools using your instructions. XO detects the guest tools as version 8.2.x: [image: 1717620543944-83a24b19-060b-4e2d-8c90-675f3ffc0200-image.png] Thank you again! SW
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      Health Check Failing After Recent XOCE Update

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      @julien-f Thank you! That appears to fix the error. Greatly appreciate your help and @olivierlambert.
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      Migrate VM Error: VDI_NOT_IN_MAP

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      @StormMaster Thank you for sharing your findings! @stephane-m-dev Thank you for the update! Looking forward to testing the fix just not sure how to replicate other than what @StormMaster found.
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      Recommendations on heterogeneous pools

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      splastunovS
      +1 to @Andrew setup
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      Troubleshooting Controll Domain High Memory Warning

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      tjkreidlT
      @stevewest15 I would also increase your dom0 memory, 16 GB is already pretty much all being used and for migrating VMs, you need memory. Some of the resources are used for dealing with storage, whoch requires such resources. If the migration is slow, run iostat and see what resources are being used; there may be a storage bottleneck, as well.
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      Initial Backup only creates Delta Restore

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      olivierlambertO
      Very likely. With an UX designer, we'll be sure to avoid those problems
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      S3 Backup Restore File Issue

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      Thank you greatly appreciate your assistance as always!
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      Backup Failed

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      @olivierlambert Thank you, I didn't know this. Just reading the docs about it.
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      S3 Backup Retention Not Deleting Old Backups

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      olivierlambertO
      Dunno it's @florent you should ask
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      Delta Backups Failing: AWS.S3.uploadPartCopy: CPU too busy

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      florentF
      @stevewest15 I don't have any advice of the fiability of b2 Their design require us to make a minor modification to our upload service . During a full xva backup to a S3 like service, each part uploaded is uploaded along its hash and that is used to control the integrity
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      Restore Backups from a different XO

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      Thank you! So I must be doing something wrong as I'm getting the following error when I add in the old NFS mount which has the backups: [image: 1640195910502-dc65c765-1542-4c58-8082-fbb54e33f3c9-image.png] The /mnt/Tank/VMs mount contains the previous XO backups as well as some active VM storage: [image: 1640196114557-680455d2-9559-4fe9-a8a2-127762d5b61b-image.png] FreeNAS has two 10Gbe nics which are isolated based on the type of traffic: 10.10.1.5 is for VM traffic 10.10.2.3 is for Backups/Migration traffic
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      XO Error Loading Health Tab

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      I can confirm it's now working. Thank You! Health page loads fine w/ the latest commit.
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      Delta Backups & Continous Replication of Empty Drives

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      @olivierlambert Thanks, I tried running fstrim but it returned "the discard operation is not supported" on this NFS SR mount. I also tried running on SSD mounts which do support TRIM and they all returned the same message about "discard...not supported." The VM OS (CentOS 7.8) does support TRIM in kernel so not sure if xcp-ng or xenserver is the reason why the VM can't issue fstrim on the NFS SR mount or the SSD SR mounts. [image: 1605283613178-85b94dd0-b129-45ec-9ee2-bc4b7dd92b5e-image.png]