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Cake day: June 23rd, 2023

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  • I would like to play with ceph but I don’t have a lot of spare equipment anymore, and I understand ZFS pretty well, and trust it. Maybe the next cluster upgrade if I ever do another one.

    And I have an almost unhealthy paranoia after see so many shitshows in my career, so having a pile of copies just helps me sleep at night. The day I have to delve into the last layer is the day I build another layer, but that hasn’t happened recently. PBS dedup is pretty damn good so it’s not much extra to keep a lot of copies.




  • I have no idea what you have going on, I’ve never seen LXCs take that long, even if I include the time it takes to down the containers and bring them up after a reboot.

    What are you using for running them? I just tested my docker LXC and it took 16 seconds from when I typed “reboot” to having a login prompt. And that’s on an ancient R410 server running proxmox.


  • I think you’re doing it wrong. LXCs boot almost instantaneously on a hypervisor since they hijack the host kernel, I’d be surprised if my CTs take 5 seconds.

    I would agree on the live migration issue but I guess you pick your services accordingly. I have a VM that runs docker and a LXC docker host, and I pick my containers for each accordingly.


  • ikidd@lemmy.worldtoSelfhosted@lemmy.worldHelp Reviewing My Server Setup?
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    4 days ago

    The advantages you gain with running a hypervisor on something like ZFS is immeasurable, for snapshotting, replication, snapshot backups and high availability. You don’t have to quiese machines to back them up and you can do instant COW snapshots before upgrades.

    KVM doesn’t really have overhead, that’s the kernel part. Maybe a bit of RAM, but with LXCs it’s negligible.




  • Proxmox servers are mirrored zpools, not that RAID is a backup. Replication between Proxmox servers every 15 minutes for HA guests, hourly for less critical guests. Full backups with PBS at 5AM and 7PM, 2 sets apiece with one set that goes off site and is rotated weekly. Differential replication every day to zfs.rent. I keep 30 dailies, 12 weeklys, 24 monthly and infinite annuals.

    Periodic test restores of all backups at various granularities at least monthly or whenever I’m bored or fuck something up.

    Yes, former sysadmin.