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About madcow

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    Junior Member
  1. chroot has other less permanent uses such as setting up or troubleshooting a system without booting it. I wasn't aware that storage spaces works like LVM.
  2. Adding a few more: 1. Copy files being accessed. Delete files being accessed. Copy (backup) a running OS using common tools. 2. Containers (e.g. LXC, Docker). 3. Many more file system choices including ZFS and BtrFS. 4. Choose kernel components. Run low latency or real time kernel. 5. chroot 6. initrd/grub allows you to do things like copy OS to RAM disk and boot from it, or preload kernel modules and boot from software raid. 7. LVM and snapshots
  3. I think a big part of security of Linux servers comes from being able to remove nearly everything from the system except the bare essentials needed to run your applications. You can pick all of your packages and even remove kernel features. A simpler system with fewer services will likely have fewer exploits.
  4. madcow

    Multi-user Computer - How?

    My understanding is that this is due to nvidia being an ass and artificially disabling the driver if it sees virtualization flags and you aren't using some high end Quadro/Tesla. The platform may not matter. I though of one more thing. I believe this flag needs to be set too: <features> <kvm> <hidden state='on'/> </kvm> </features>
  5. madcow

    Multi-user Computer - How?

    I know of two possible solutions: 1. Use an older version of the driver (340.xx i think). This may not be possible with the 970. 2. Remove hv_time and all other hyper-v flags. I recall hearing that newer versions of qemu may enable hv_time by default so it may need to be disabled explicitly. I think you unfortunately take a 10% or so performance hit but better than not working.
  6. madcow

    Multi-user Computer - How?

    As far as I know, you can do this with either VMware ESXi or Linux with KVM. I'm not familiar with the ESXi method. See this. For KVM this is probably the best source of information. Read the first post to the get the idea, and the last 10-20 pages or so for updated methods. You will want to use libvirt with OVMF. I believe the ideal hardware setup would be an E5 or better Xeon, server motherboard and AMD graphics cards. You won't need any kernel or other software patches. This was my passthrough setup for a while and worked very well: E5-2630 v2 Supermicro X9SRL-F GTX 780ti
  7. Never. I upgraded a few weeks ago and I'm not satisfied with it.
  8. Actually used? I have just the primary and backup: Main box: All in one desktop/server/storage/hypervisor. Backup of main box: Keeps backup of data and is also able to run all of the VMs. Usually powered down. I like to keep hardware count low and virtualize as much as possible.
  9. madcow

    LTT Storage Rankings

    I'm running an E5-1650 v3 with 16 HDDs. Power draw when mostly idle is a little less than 200W. This was provided by the motherboard IPMI so I'm not sure if it is accurate. This system actually also has a dedicated graphics card because I pass it into a destktop VM but I don't think an idle GPU contributes too much to power draw.
  10. madcow

    is bigger always better for harddrives?

    I agree with this. Or buy one 4TB drive and backup to a cloud service.
  11. Motherboard raid may or may not be supported by Linux. I recommend mdadm software raid https://raid.wiki.kernel.org/index.php/RAID_setup I believe ubuntu/debian guides will work for steamos
  12. madcow

    How often do you do your "computer chores"

    My system seems to never collect dust. Not using any filters. Every time I check, it is as clean as it was when I put it together. I think it helps that 1) it is in a separate room where people don't usually enter 2) it is off of the floor 3) floor is tile.
  13. People can contribute quality content even using Google translator.
  14. madcow

    NAS Build (FreeNAS)

    1. You should check out this discussion. 3. You only need 750GB? Two 2-4TB disks in a mirror sounds sufficient to me. You could go with some cloud storage service for backup.
  15. madcow

    What's Your Favorite Web Browser?

    I keep switching between FF and chrome. I like the free aspect of FF but chrome is undoubtedly faster and snappier. FF also has a tendency to become even slower over time (few days) unless I restart it. Chrome however seems to be pickier about my desktop setup (Linux) and will not run under certain configurations.