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you don't need to do it manually in the guest (at least on linux), the virtio drivers are able to change value automatically.

@fstrankowski I'm looking to add the option in the proxmox gui, to be sure, how do you set the value ? "ceph config set client.admin rbd_read_from_replica_policy localize" ?

It's supported on pve9. (with lvm block volume formated with qcow2, and qcow2 snapshot chain of lvm volume) . Qcow2 is not only for file. (same for vhd on xcp-ng, their lvm volume are formated with vhd)

about snapshot && space usage, only qcow2 with external snapshot (so for shared block device), is currently still experimental and need indeed same space for each snapshots. but all others plugins can do snapshots && don't need same space for each snapshot. (including shared block like ceph...

Block jobs Non-active block-commit was optimized to keep sparseness blockdev-mirror was optimized to do less work with zero blocks blockdev-mirror and blockdev-backup gained new options, see QMP section interesting :)...

mmm , this is strange. for the intel, I have some of them in production,and I don't have theses result. does it solve the problem if you force the values manually ? (you can use "ceph config set osd.x osd_mclock_max_capacity_iops_ssd 30000" )

https://lore.proxmox.com/pve-devel/mailman.50.1727091601.332.pve-devel@lists.proxmox.com/t/ " * During backup, there is often a longer running connection open to our QMP socket of running VMs (/var/run/qemu-server/XXXX.qmp, where XXXX is the vmid). This blocks our management stack from...

ssd model ?

I doubt that they are using the proxmox api, because their backup are using the qemu socket directly without using the proxmox api, and I think this is why you see qmp socket error. (Only 1 client can be connected to the socket at one time). From what I known, they are some their shit on their...

remove vlanaware from vnet,it's only need if you want to tag inside the guest vm os

>>E: Failed to fetch https://enterprise.proxmox.com/debian/ceph-squid/dists/trixie/InRelease 401 Unauthorized [IP: 66.70.154.82 443] if you don't have an enterprise subscription, you need to configure no subscription repositories...

dp you mean switching from vmbrX 1500 --> vmbrY 1450 with the vm online ? if yes, I think currently it's only unplug/replug the tap interface on the host side, but I'm not sure it's changing the value inside the guest. (The only way is to unplug/hotplug the nic I think, as the mtu in the...

10 year ago, ovs had features that linux bridge didn't have (vlan-aware for example). But today, maybe the only interesting feature they have is port-mirroring. The whole sdn stack don't use ovs at all (including for vxlan,evpn,...). I don't like ovs personnaly, because you have an userland...

use the vmbrX directly . (Not sure why it's vlan4095 on vmware ? is it hardcorded 4095 trick in vmware to allow all vlans?) no Both are the same, choose what you prefer. (sdn allow more complex setup like vxlan,evpn,... but for simple vlan, this is the same)

"bridge-vids" are the list of allowed vlans in the bridge. (by default it's 2-4096 to allow all vlans). If you add a vm interface with a specific tag vlan, it'll not work if the vlan is not also defined in bridge-vids.

By default, if host don't use 80% memory, the balloon driver is using 0 memory. (so the vm is using the max memory). and when the host is > 80% memory, pvestatd deamon try to increase the balloon a little bit on each vm to decrease host memory to 80% again, with min_size as maximum target for...

when your host is reaching 80% memory, the balloon driver of each vm where it's running is increasing . The memory take by the balloon drivers, is gived back to the hypervisor. Only linux, you don't see it, it's like the memory of the vm is decreasing, because the balloon driver is well...

The results seem quite low indeed. Qemu itself is able to reach 200~300k iops with 1 core. (I'm working to add support for mutiple iothread to increase the performance up to 600kiops by disk, but you are far from reaching the current cpu limit). (I'm not sure about the performanc when doing...

Hi,thanks for the report. I have send patch to the mailing recently to improve the performance of secure erase, it's not yet commited. But I didn't notice this bug with volume activation. I'll look at it next week. (and I'll forward it the dev mailing)

yes sure. (everything you can do in the gui is using api)