cross-posted from: https://lemmy.world/post/34018219

Proxmox 9 was released, based on Debian 13 (Trixie), with some interesting new features.

Here are the highlights: https://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_9.0

Upgrade from 8 to 9 readme: https://pve.proxmox.com/wiki/Upgrade_from_8_to_9

Known issues & breaking changes: https://pve.proxmox.com/wiki/Roadmap#9.0-known-issues

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40 comments in c/selfhosted@lemmy.world view that post
[–] 52 points 1 year ago (7 children)

The new mobile interface is lit 🔥. Finally usable

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  • [–] 12 points 1 year ago (6 children)

    Fuck, I just left for a month away and I hate to do major upgrades when remote.

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  • [–] 35 points 1 year ago (5 children)

    Probably for the best. Upgrades on the first release haven't had a stellar record

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  • [–] 5 points 1 year ago (4 children)

    Exactly, for example I missed the note that updating truenas to the latest version disables and hides all the virtual machines (theoretically they can get migrated to the new engine but it gave me some weird error. Luckily truenas can be downgraded easily.)

    Now, 3 months after the First release of the update, those virtual machines aren't disabled and hidden anymore

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  • [–] 1 point 1 year ago (3 children)

    core or scale? are they getting rid of core??

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  • [–] 5 points 1 year ago (2 children)

    scale, they got rid of the kvm emulator in the last release and i was devastated to see all my VM gone. The "migration" consists in you migrate the disk image to the new directory, then you make a new VM... IF you knew that BEFORE the update and took note of all the settings because the old VM menu is gone!

    but also it's clear than core is on life support

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  • [–] 1 point 1 year ago (1 child)

    poop.

    well my truenas is a vm on proxmox, i assume I'll figure something out when it is time lol

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  • [–] 2 points 1 year ago

    As of the last update released on August 1st, the "old" VMs are now visible again. The latest Electric Eel chain also merged all Core features into Scale, so the jump should not be as drastic any longer. I've always lived on Scale, but I assume you could try backing up your config and spinning up a new Scale VM and restoring the backup to it. No matter how you dice it though, it will be spicy!

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  • [–] 16 points 1 year ago (5 children)

    Not sure I want to check how far behind I am. How rough are these upgrades? I’ve got most things under Terraform and Ansible but am still procrastinating under the fear of losing a weekend regiggling things.

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  • [–] 13 points 1 year ago

    I just did three nodes this evening from 8.4.1 to 9, no issues other than a bit of farting around with my sources.list files.

    Not noticing anything significant, but I haven't tried the mobile interface yet.

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  • [–] 7 points 1 year ago

    I'd also like to know.

    I built a new machine seceral months back with PVE and got the hang of it but it's been "set it and forget it" since then due to everything running smoothly. Now I don't remember half the things I learned and don't want to get in over my head running into issues during a major upgrade. I definitely do want the ability to expand my ZFS pool so I will need to bite the bullet eventually.

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  • [–] 15 points 1 year ago (4 children)

    ZFS now supports adding new devices to existing RAIDZ pools with minimal downtime.

    Yes!!

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  • [–] 0 points 1 year ago* (last edited 1 year ago) (3 children)

    Edit2: the following is no longer true, so ignore it.

    Why do you want this? There are very few valid use cases for it.

    Edit: this is a serious question. Adding a member to a vdev does not automatically move any of the parity or data distribution off the old vdev. You'll not only have old data distributed on old vdev layout until you copy it back, but you'll also now have a mix of io requests for old and new vdev layout, which will kill performance.

    Not to mention that the metadata is now stored for new layout, which means reads from the old layout will cause rw on both layouts. It's not actually something anyone should want, unless they are really, really stuck for expansion.

    And we're talking about a hypervisor here, so performance is likely a factor.

    Jim Salter did a couple writeups on this.

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  • [–] 4 points 1 year ago* (2 children)

    Adding a member to a vdev does not automatically move any of the parity or data distribution off the old vdev.

    Yes it does. ZFS does a full resilver after the addition. Jim Salter's write ups are from 4 years ago. Shit changes.

    Edit: and even if it didn't... It's trivial to write a script that rewrites all the data to move it into the new structure. To say there's no valid cases when even in 2021 there was an answer to the problem is a bit crazy.

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  • [–] 18 points 1 year ago* (5 children)

    Yay, it only took 2 hours and the help of an llm since the upgrade corrupted my lvm metadata! Little bit of post cleanup and verifying everything works. Now I can go to sleep (it's 5am).

    Wasn't that bad, but not exactly relaxing. And when my VMs threw a useless error ('can't start need manual fix') I might have slightly panicked...

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  • [–] 3 points 1 year ago (1 child)

    Thanks for posting this and reminding me to never go back to Proxmox. My Proxmox server killed itself and all VM's twice before I moved onto HyperV.

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  • [–] 2 points 1 year ago*

    Oof. I have my VMs getting backed up to another machine so theoretically (untested) I should be able to recover with less than a day of data loss (very minimal for this box). The annoying part would be getting it hooked up to a monitor and keyboard, since it's under an end-table in the living room.

    This is the first issue in like... 15 months? Hopefully it stays rather uneventful.

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  • [–] 6 points 1 year ago (5 children)

    As a person who just installed proxmox for the first time a couple of weeks ago, does this allow me to fix some of my mistakes and convert VMs to LXCs?

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  • [–] 7 points 1 year ago (2 children)

    You could just start over if you dont have much invested into your current setup.

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  • [–] 4 points 1 year ago

    As someone who also started proxmox fairly recently, I found that the community has these really cool scripts that you can use to get started. Obviously you're running bash scripts on your main node for some, so there are risks involved with that but in my experience it's been great.

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  • [–] 5 points 1 year ago (1 child)

    This is awesome, I am going to imediatly get a test cluster set up when I get to work. Snapshots with FC support was the only major thing (appart from Veeam support) holding us back from switching to Proxmox. The HA improvements also sound nice!

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  • [–] 3 points 1 year ago

    A job for the weekend I guess. just done all the prerequisites and only have a warning for dkms

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  • [–] 3 points 1 year ago (2 children)

    Anyone got screenshots of the new mobile UI?

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  • [–] 2 points 1 year ago (2 children)

    I am telling myself that updating remotely is not a good idea

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  • 5 comments in c/proxmox@lemmy.world view that post
    [–] 11 points 1 year ago (2 children)

    Proxmox officially released debian trixie before debian did lol

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  • [–] 2 points 1 year ago

    I like the evpn integration

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  • [–] 2 points 1 year ago

    Upgraded yesterday. No problems at all. Just some manual scripts to update the repos to Trixie.

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  • 1 comment in c/hackernews@lemmy.bestiver.se view that post
    [–] 1 point 1 year ago

    As a heavy Proxmox user, I'd advise waiting a couple releases before upgrading, given the past track record.

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