memory

  1. M

    [SOLVED] Enabling memory hotplugging results in incorrect RAM allocation?

    Hi, I have a personal Proxmox environment I use for testing, for it I use the community repo which is running the latest version of proxmox VE (5.2-2). Full package version list: proxmox-ve: 5.2-2 (running kernel: 4.15.17-1-pve) pve-manager: 5.2-1 (running version: 5.2-1/0fcd7879)...
  2. D

    Wrong memory usage on KVM VM

    Hi, I am using a pfSense 2.4 (FreeBSD based) virtual machine on KVM and I see a different RAM usage in Proxmox than in the VM itself. Proxmox shows more than 90% of RAM usage (~ 15Gb of 16 Gb): but both pfSense and FreeBSD are showing only 2% of usage: But the virtual machine is giving...
  3. K

    Sudden reboots while running backups (maybe ZFS ram issue?)

    I am investigating 2 incidents that seem to be similar. On 2 different PVE servers, both running ZFS with raidz (mirroring with 2 disks), I experience random reboots during backups of KVM machines. (no clustering, single hosts) Both server are low on RAM. One has 8 GB RAM and a single VM with 1...
  4. S

    Memory Overcommit

    Hello there, I have two questions. When VM is starting, is there some way to allocate full memory which is assigned to VM on node? If not, is there any option to disable memory overcommitment? I'd be very grateful for any response. Thank you!
  5. X

    Memory allocation failure

    Hello I would like to ask you for some help. I've a weird situation. Every few hours I can't restart my VM because of: root@s0:/home/xarion# qm stop 128 root@s0:/home/xarion# qm start 128 ioctl(KVM_CREATE_VM) failed: 12 Cannot allocate memory failed to initialize KVM: Cannot allocate memory...
  6. C

    [SOLVED] LXC showing shared memory from host

    Hello, It's seems the shared memory from an LXC container shows the shared memory from the host. Here's the host: total used free shared buffers cached Mem: 64414 62599 1815 1833 9329 31029 -/+ buffers/cache: 22241...
  7. J

    [SOLVED] PVE Container Memory Management

    Hi, I am new to Proxmox and am using it on a small homelab system. It is running on a fanless mini PC with only 8GB of RAM. I am a Linux user and so I am currently hosting virtual Linux environments running in containers. So I am trying to understand how memory is managed. So let's assume I...
  8. G

    EDAC sbridge errors after upgrade to 5.1

    Hi folks, Just after a sanity check here. I recently upgraded my Proxmox 5.x server to 5.1 and noticed the following errors on boot. [ 0.000000] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to uersion: 0x3a (or later) Reading all physical volumes. This may...
  9. C

    swappiness to 0 doesn't seems to work

    Hello, I've recently changed the swappiness on my host to 0 since there is plenty of ram available. Rebooted to apply the change. Now my container still consume swap even when there is memory free. Here's in the webui: Here's the free output inside the container: total...
  10. C

    lxc console cleanup error

    Hello, After rolling back a snapshot on an LXC containers the pvestatd service completly freaked out and started spitting alot of errors regarding this container Nov 24 10:35:59 dev-proxmox-1 pvestatd[16792]: lxc status update error: can't open '/sys/fs/cgroup/memory/lxc/143/ns/memory.stat' -...
  11. O

    LXC container memory configuration

    Could somebody elaborate on how to configure the LXC memory settings properly? The UI allows me to set the memory limit of my container to e.g 1024MB and 0MB for swap. According to the documentation this would be wrong: Is the UI missing a sanity check or am i misinterpreting the documentation?
  12. A

    Host Uses Swap when RAM available

    Originally posted this in IRC and was suggested I post here. I have a proxmox host running 4.4.67-1-pve which is using 99% of it's swap. Yesterday it was one vm using ~25G of swap. I stopped/started the VM (to kill the process, rebooting the guest did not reduce swap usage) and swap went back...
  13. S

    memory usage

    Hello, In proxmox 4, the use of the memory for a vm is wrong. On the line memory use proxmox displays 90% while in the vm (windows 10) there is only 15% of used: 8 go of allocated - 1.5 used in windows. Is this normal? thanks
  14. P

    Corosync memory leak

    Hi guys, Experiencing the same issue on 2 separate clusters of different sizes in two different locations with completely different hardware. Issue is that after a week or two of regular cluster operation memory usage by corosync grows to crazy levels for instance currently on a node it's at...
  15. H

    VM crash with memory hotplug

    We're having problems with all newer pve-qemu-kvm versions, every version newer than 2.5.19 is causing a unpredictable crash of our VM's. I've setup some tests and reproduce details, can you please check your configuration, with this test you can crash your VM in a few minutes. My test VM...
  16. P

    Migrating VMs to Low-Mem Nodes

    If a destination node does not have enough memory to migrate a running-VM to, it still migrates it and then causes the system to hang. Is there a setting to prevent this behavior and only allow deploying VMs if there is enough available memory?
  17. N

    Memory Unit conversion

    Can any one help me to understand that, how unit conversion is done for Dashboard, I have attached screen shot of REST Response and highlight there respective values in dashboard. (Total RAM usage and HD Space)
  18. D

    [SOLVED] Cannot change memory to value below 1024MB

    Hi all, i'm currently facing the issue that i'm not able to change the value of memory for the virtual machines to below 1024MB - starting the machine with that value leads me to a error Message: TASK ERROR: minimum memory must be 1024MB Those VM's are full clones of a template (which has...
  19. A

    Is Proxmox swap shared by containers?

    Whether or not I allocate swap to a container, the container still shows the swap size of the physical server. Software such as NextCloud reports memory usage by adding Mem and Swap together. /proc/meminfo MemTotal: 262144 kB MemFree: 218196 kB MemAvailable: 218196 kB ...
  20. H

    KVM fixed memory - ballooning?

    In PVE 4.4 when creating a new VM, at the tab Memory there's a new checkbox "Ballooning" when "Use fixed size memory" is selected. I thought ballooning is only used with dynamic memory assignment (https://pve.proxmox.com/wiki/Dynamic_Memory_Management#Ballooning). Also the "Help" button doesn't...

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