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  1. Waschbüsch

    Recommendations for Ceph on gigabit?

    Update: In case anyone wondered: I ended up using three Intel X540-T1 and a Netgear XS708E to up everything to 10GbE. It really rocks!
  2. Waschbüsch

    confused w/r to LVM visibility

    Actually, yes. I had migrated my RAID6 to a RAID5, so that I could have a dedicated disk for ceph. (OT: Rebuilding a 4x4 TB RAID 6 to a 3x4 TB RAID 5 took about 1 Week(!) on an Adaptec 8805) After that migration, I created a logical volume consisting only of the - now free - 4th disk. I used...
  3. Waschbüsch

    confused w/r to LVM visibility

    Weird: It does not seem 'normal' behaviour. I rebooted the node and now all is back to normal. I only see the host's own lvm data and the guests' data ist hidden. While I am not eager to try and replicate this, I am curious as to what caused it in the first place...
  4. Waschbüsch

    confused w/r to LVM visibility

    Hi all, I am a bit confused w/r to the visibility of a VM's LVM devices from the PVE host. Inside LVMs I have partitions like this: /dev/vda1 => /boot /dev/vda2 => extended partition /dev/vda5 => LVM physical volume and then one logical volume for root and one for swap. This is the result of...
  5. Waschbüsch

    Driver windows7 6bit

    Hey there. There is actually a wiki article on that: https://pve.proxmox.com/wiki/Windows_VirtIO_Drivers Martin
  6. Waschbüsch

    numa config option

    Just activated the flag on the VMs and rebooted the machine. numastat before: node0 node1 node2 node3 numa_hit 502353939 272086894 396857088 1287887637 numa_miss 85673262 344120561...
  7. Waschbüsch

    numa config option

    Thanks, that is very helpful (and a good read, too).
  8. Waschbüsch

    non-HA cluster

    Cool. Thanks for that info. This is what I had hoped for that it's just possible to manage without much fuss...
  9. Waschbüsch

    numa config option

    Hi, Since 3.4, there is this 'Enable numa' checkbox. I am a bit confused as to what implications enabling this has? Does it mean 'this host system is numa, therefore make use of CPU pinning, restrict memory to come from the used Core's CPU node, etc. to optimize the guest's performance' ? Or...
  10. Waschbüsch

    non-HA cluster

    Hello everyone, I have a three-node cluster running including ceph and would like to know if the following is possible: If one of the nodes goes down, I would like to be able to start one of the dead node's VMs on a remaining node. This is decidedly not about HA, fencing and the like, but about...
  11. Waschbüsch

    Recommendations for Ceph on gigabit?

    Sure thing, but if your current setup is a Hardware-RAID 6 with 4 Disks with a LVM on top of that ... Since I was just testing, this was MUCH easier than migrating the RAID 6 to RAID 5 and then use the single disk, etc. If I were to setup a cluster from scratch, I'd certainly setup ceph using...
  12. Waschbüsch

    Recommendations for Ceph on gigabit?

    Hi all and thanks for the replies. After playing around with this a bit, I am quite amazed at how well things worked. I used the internal gigabit LAN for the ceph setup and added one OSD per node. Then moved a running(!) VMs disk image from local LVM to ceph and vice versa. I also tried online...
  13. Waschbüsch

    Recommendations for Ceph on gigabit?

    Hi all, Currently, I have the following setup: I run a pve cluster with 3 nodes. Each node has two gigabit network interfaces one with a public management IP and one on an internal switch with a private IP. Now, since the public IPs are not on the same network, I created the cluster using the...

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