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did you make a backup before and after? for me it noticably reduced the backup size.

maybe there is an alternative way to do this occasionally? Maybe to run SDelete like mentioned here: https://pve.proxmox.com/wiki/Shrink_Qcow2_Disk_Files#Zero_Using_SDelete

is there nevertheless any way to make trim work on Windows 7? Because on my Guest it doesn´t look like the drive is even recognized as SSD which in consequence does not enable TRIM. I tested with this tool: https://github.com/CyberShadow/trimcheck

ok, thank you :) meanwhile I also changed a Windows 7 guest, enabled the discard option, got a "0" when running but still am not sure if it is working and how to run it (TRIM) once manually. I found a command for PowerShell but it does not seem to be working for Windows 7: Optimize-Volume...

it is Debian 9 and what I read it is not recommended to edit the grub.cfg file manually. update-grub did the trick so far :)

somehow it is hardcoded in the grub bootloader. I am not quite sure how to fix this. Edit: It turns out running update-grub did the trick before changing the device. Then the hardcoded device became an UUID. If it is too late to do this, reboot the VM and press "E" to edit the grub options...

i see. if I extract it there is a .raw file that I can´t handle either. So the only way to look on the files is to restore the backup?

I have another phenomenon that exist with a newly created VM. On install it recognized the "old" virtio drive as /dev/vdX. Now, when I change to SCSI-virtio, it gets somehow changed to /dev/sdX and does not boot anymore because it can´t find the /dev/vdX device.

the .vma file inside of a .vma.lzo or .vma.gz archive. I want to inspect the contained files.

on Windows it gives me bluescreen(s). Is there a special way I need to do it there? Edit: I made it work as follows: shutdown the VM and add an extra SCSI-virtio drive boot the VM and install the driver (device manager) shutdown the VM and remove the extra drive change the desired drive to...

Hello, how can I browse a backup-file? Thanks in advance, Afox

thank you so much

Hello, I just realized I can´t use the discard option with my virtio block device and want to "transform" the storage to a SCSI-virtio device. Is there a painless and save way to do this? Thanks in advance, Afox

sorry I don´t understand your answer. I was talking about the backup-mode "snapshot". Regards

hello, thank you for the answer. I want to use it to improve snapshot-backups. I was wondering if the freeze with the agent would be longer than without. Regards

Hello, do you recommend enabling the Qemu Guest Agent for a qcow2 drive on an ext4 local storage? I read here that a similar mechanism is already applied I am also interested about how an user visiting a website on this VM would expirience the freeze by the Guest Agent. Thanks in advance, Afox

Hello, what port is used for the relay process from Proxmox to the Mailserver? Is it 25? Maybe the table in the manual (section 2.3) is not complete at this point? Additionally I want to report a small typo at the beginning of the same section 2.3: you write: "In order to pass e-mail traffic...

hi again, are my assumptions correct? Is the relay process similar to delivering a mail to an external mailserver?

thank you. now it doesn´t want to remove proxmox anymore. it still suggests me "linux-libc-dev". I guess it is save to update this? Edit: I just did it. Without any issues until now.

after rebooting it still wants to remove proxmox