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    VM killed by OOM killer, I don't understand why

    Hello, on a PVE node with 256 Gb RAM, a 96 Gb qemu virtual machine is regularly killed by the Out Of Memory killer and I don't understand why this is happening: [Wed Oct 4 19:07:29 2023]...
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    HTTP 596 listing backups

    Hi everyone, I have a Proxmox Backup Server with 4 SATA hard drives on raidz1-0. Backups and restores work, but most of the time I cannot list backups on the PVE web interface because I get communication errors or HTTP 596 errors: I'm sure I don't have any network problems, so I think this...
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    Cannot migrate a VM: Bitmap already exists

    Hi all, one Virtual Machine is replicated from node02-i to node03-i, and the replication is successfully running: I'm now trying to migrate this VM to `node03-i` but the replication is failing with this error: 2022-12-23 17:42:14 starting migration of VM 208 to node 'node03-i'...
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    AMD Ryzen 9 5950X keeps rebooting with one specific guest

    Hi, I have a Proxmox VE 7.2 cluster with some Intel and some AMD nodes. I have several virtual machine, one of this is running Windows 2019 Standard with 64 Gb RAM and 8 vCores. I moved this Windows 2019 VM from one Intel to one AMD node, and from that point the AMD node began to restart...
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    PVE cluster on remote nodes with tinc unusable

    Hi, I created a PVE cluster connecting nodes using Tinc on a gigabit connection on Hetzner. This is needed because I'm going to migrate all VMs to new nodes and I want to do so incrementally using the built-in PVE replication. For this reason I wanted to connect old and new nodes in a cluster...
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    Cannot run migrate VMs on node - unable to connect to VM qmp socket

    Hi, I am experiencing many problems on one node of my Proxmox cluster. Some containers are locked by backup (but no backups are running on that node), and one VM is not booting, nor from the hard disk: and even not from a rescue boot CD: I tried to migrate that VM to another node but the...
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    Nested virtualization very slow: Intel vs AMD thoughts

    Hi. For the purpose of creating a testing and development environment I need a virtual machine which hosts a Virtualbox installation. For this reason I enabled the nested virtualization following instructions at https://pve.proxmox.com/wiki/Nested_Virtualization on two different physical hosts...
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    VM hangs or corrupts during nightly backups

    Hi, I'm experiencing a very big issue on some virtual machines which I found hanged or with corrupted file system especially in the morning at the beginning of the working hours (corrupted file system means that I need to reboot the VM and launch fsck to fix). These problems are happening on...
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    Why backups are not pruned?

    Hi, I configured the garbage collection as following: All my backups from PVE are daily, so with this configuration I expect having 7 backups at maximum, but even after manually running the garbage collection I see this situation: 47 backups only for one VM is not what I expect. When I...
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    Slow backups from NFS share

    Hi, I'm using Proxmox Backup Client on a Debian virtual machine on Proxmox VE to backup a quite large NFS share (~ 10 Tb) mounted on the VM. The backup works, but it's very slow. First backup took a very long time (~ 12 days) and it's expected, but even next backups are taking so long: at the...
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    [SOLVED] "unexpected error on datastore traversal" error during garbage collection

    Hi, I'm running Proxmox Backup Server 1.1-2, with storage on iSCSI. Backups are running without problems, but I cannot prune any old backup because I get this error: 2021-04-28T07:33:53+02:00: starting garbage collection on store mydatastore 2021-04-28T07:33:53+02:00: Start GC phase1 (mark...
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    ZFS big overhead

    Hi, I have a ZFS rpool with 4 x 10 Tb drives on raidz1-0: root@pve:~# zpool status -v pool: rpool state: ONLINE scan: scrub repaired 0B in 1 days 04:24:17 with 0 errors on Mon Mar 15 04:48:19 2021 config: NAME STATE READ WRITE CKSUM rpool...
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    HTTP API Error 596

    Hi, I implemented the check_pve script from https://github.com/nbuchwitz/check_pve to have Proxmox monitored from my Icinga2 instance. Some checks run good, some others receives HTTP error code 596: root@node01:~/check_pve-1.1.3# ./check_pve.py -e node1 -u icinga2@pve -p password -k -m...
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    Backup to Proxmox Backup Server for one VM: dns error: failed to lookup address information: Name or service not known

    Hi, I installed a Proxmox Backup Server and I configured a new backup storage on Proxmox VE 6.3-3. Backups for all virtual machines works good, but for only one which returns the following error: INFO: include disk 'virtio0' 'local-zfs:vm-101-disk-0' 32G INFO: backup mode: snapshot INFO...
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    High I/O delay during backups on ZFS

    Hi, I am encountering some problems making backups on many servers running ZFS. The PVE cluster is made of 4 nodes, every node have a ZFS mirror pool on 2 NVMe SSD drives and a full backup is made once per week at 00:30 on different days per each node: Every time a backup is started I see...
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    Ceph over multipath device or something else

    Hi, I have 4 Proxmox servers, all connected to a Fiber Channel storage using multipath which is serving two volumes: STORAGE-DATA and STORAGE-DUMP. Every node is showing 4 sd* devices (2 per volume) and one mapper device per volume: root@node2:~# multipath -ll STORAGE-DATA...
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    Why my ZFS dataset is consuming much more disk space?

    Hi, my virtual machine has two ZFS drives, one 60 Gb and one 18 Tb: root@gus3:~# grep zfs /etc/pve/qemu-server/3001.conf virtio0: local-zfs:vm-3001-disk-0,size=60G virtio1: local-zfs:vm-3001-disk-1,size=18T I have 4 10 Tb disks on this server and I'm running out of disk space, so I'm...
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    VMs on ZFS not booting after disk replacing

    Hi, on my Proxmox 6 system I have some ZFS pools, one of this is a raidz1 pool with 6 drives. One drive had a failure prediction on SMART so I replaced it with a new one following the guide at https://pve.proxmox.com/wiki/ZFS:_Tips_and_Tricks#Replacing_a_failed_disk_in_the_root_pool. After that...
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    Mount ZFS snapshots inside VM

    Hi, is there a way to mount ZFS snapshots to be accessible from the VM? I know that snapshots on Proxmox are for the whole disk block and not for the single partition, but I'm wondering if there is a way to let users to access to snapshots themselves without mounting a snapshot from Proxmox...
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    ZFS sync=disabled safeness

    Hi, is it safe to set the ZFS sync as disabled on Proxmox 6 if I have a working UPS protection? I see that fsyncs increases a lot with sync disabled, will this corrupt some snapshot? Thanks!

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