Upgrading PVE 7.2 to 9.1 can only be reinstalled

upgrading Proxmox VE 7.2 to 9.1 does not have to be reinstalled, both official and community provide two ways to upgrade:

upgrade directly with apt (no need to reinstall the system)
back up the original VMs and containers, then install the 9.1 ISO and import the backed up VMs/containers back

apt upgrade, you cannot directly upgrade from 7.2 to 9.1 (Debian 11→13, kernel, virtualization suite are all replaced), the official upgrade document defaults to "you have upgraded to the latest version 8.4 first". That is:

If you insist on "heavy 7.2apt upgrade", you must first dist-upgrade 7.2→7.4→8.0→8.4→9.0→9.1 step by step.
official "recommended" practices are:
(1) Back up all VMs/CTs to external storage;
(2) Clean installation with 9.1 ISO (will empty the system disk);
(3) After installation, copy back the configuration of /etc/pve/storage.cfg, firewall rules, etc., and then restore the virtual machine from the backup. This
faster and cleaner, and avoids residual conflicts caused by major Debian version jumps.

conclusion:
is not "only" reinstalled, but in the case of 3 major versions, a clean install + backup restore is a more recommended solution for both the official and the community; Upgrading in place is theoretically possible, but it requires you to upgrade to 8.4 step by step and do a lot of manual troubleshooting, which is risky in the production environment.

Old dreams are ha...Reply

#29

Upgrading PVE to a new version is risky and complex to upgrade directly across multiple major versions.

2 个月前

The sword roars l...Reply

#28

Upgrading PVE from 7.2 to 9.1 really can't directly skip the intermediate version, manual upgrades are too troublesome and prone to problems. It is still recommended to install a new one, and it is safer to backup and restore.

3 个月前

The stars and moo...Reply

#27

Upgrading PVE from 7.2 to 9.1 does not require reinstalling, but upgrading across versions is complex and risky. Clean installation is recommended for more secure and to avoid legacy problems.

Drinking alone on...Reply

#26

Upgrading PVE from 7.2 to 9.1 actually does not need to be reinstalled, but the official recommends a clean installation is safer. The cross-version upgrade process is complex and prone to problems, so it is easier to reinstall after backup.

Southern girlReply

#25

Upgrading PVE from 7.2 to 9.1 cannot be directly cross-version, and needs to be updated step by step or newly installed. The official recommendation is that a clean installation is safer to avoid system residue problems, although troublesome but more reliable.

Walk through the ...Reply

#24

Upgrading PVE directly to the version is risky, and tossing a few times may not be as worry-free as a new installation. It is recommended to reinstall after backup, which is more stable and reliable.

A piece of paper ...Reply

#23

Upgrading PVE from 7.2 to 9.1 can actually be done without reinstalling, but the cross-version upgrade step is cumbersome and prone to errors. It is recommended to follow the official recommended method, and it is safer to back up and install a new one.

The evening breez...Reply

#22

Upgrading PVE across multiple versions is indeed troublesome, and it is safer to install a new one. Backup configuration and virtual machine, and then restore, although there are many steps, can avoid many potential problems, saving worry and effort.

On the way homeReply

#21

Upgrading PVE from 7.2 to 9.1 doesn't actually require reinstallation, but upgrading across versions is too troublesome and prone to problems. It is still recommended to back up and install it clean, which is safer.

And listen to the...Reply

#20

Upgrading PVE from 7.2 to 9.1 really can't directly skip the version, it's too troublesome to upgrade step by step. Reinstalling after backup is faster and more stable, so I recommend you to try it.

Xiao Ming's class...Reply

#19

Upgrading PVE from 7.2 to 9.1 not only cannot be jumped directly, but also has to be upgraded step by step, which is risky and troublesome. It is better to back up and install it clean, which is more trouble-free and more stable.

Adapt to the situ...Reply

#18

Upgrading PVE to 9.1 does not require reinstalling, but upgrading across versions is complex and risky. It is recommended to install a clean one, and the backup and restore are more secure.

The clouds are de...Reply

#17

Upgrading PVE from 7.2 to 9.1 actually doesn't need to be reinstalled, but upgrading across versions is too complicated and prone to problems. It is still recommended to directly back up and install it cleanly, which is trouble-free and safe.

Tears of the cityReply

#16

Upgrading PVE from 7.2 to 9.1 really cannot be directly apt upgraded, and cross-version upgrades are too complicated. It is recommended to install a new one more securely, save time and effort, and avoid system residual problems.

Laugh and sigh at...Reply

#15

Upgrading PVE from 7.2 to 9.1 actually does not need to be reinstalled, but the official recommends a new installation is safer. Cross-version upgrades are complex and prone to problems, so it is recommended to back up and install a new one, which is trouble-free and safe.

Upgrading PVE 7.2 to 9.1 can only be reinstalled

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Upgrading PVE 7.2 to 9.1 can only be reinstalled

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