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    UFS mrsas and the mystery of lost speed

    Still wonder wonder what is the most correct way to determine the link speed of your drives.
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    UFS mrsas and the mystery of lost speed

    That's fine and I see difference in the speed too. But now which one is correct? From my tests it appears that my drives speed caps at about 3Gbps, even the SSD ones. On theory if I have to point one of the values I would go for 6Gbps instead of 150.000MB/s, however I have the strong feeling...
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    UFS mrsas and the mystery of lost speed

    Hello, I'm running on MegaRAID SAS-3 3008 and I have upgraded from FreeBSD-12 to FreeBSD-13.0 Using the default mfi(4) driver resultet into lots of checksum, read and write errors in my pool, also started logging lots of zfs and mfi I/O errors in dmesg. So I switched driver from mfi(4)to...
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    Solved tap0 device always comes up with same MAC address

    Hello, Thanks, it's the same hostid. I have change it and everything is fine now. Didn't know and had no clue anywhere on the web that tap driver uses the hostid to generate MAC.
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    Solved tap0 device always comes up with same MAC address

    Hello, Got the issue here, I have 2 VMs and I'm trying to connect them with TINC VPN. TINC uses if_dap driver and tap virtual interface. So far so good. However for some reason (may be because both systems are vmware cloned VMs) whenever I create a tap interface on any of the systems it's...
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    ZFS ZFS self-healing and scrub correction on read-only pools and datasets?

    Hello, I have a strange question that I wasn't able to find answer on the internet. My company will have satellites launched into orbit in extreme conditions. The possibility of data corruption due to space radiation is huge and we wish to start using and take advantage of ZFS self healing...
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    Hello, My setup is just with 8 hosts and my configs are very simple. I haven't notice any high CPU usage coming from tinc and may be it's possible to be like this because of the high number of hosts. Keep in mind that every single host is authenticated with different key so it's separately...
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    NFS mount issue "Identifier removed"

    Hello, Not sure if this topic is for here or for the storage section. I have mounted NFS via fstab with the following parameters: 192.168.101.201:/someshare /usr/local/www/someshare nfs rw,nolockd 0 0 Trying to copy recursive directory with many files ends with error "cannot create file"...
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    LVLouisCyphre, not sure what are you talking about. For the public Internet connectivity (VPN endpoints) I depend on the Internet itself - every site has it's own ISP. Inside the VPN network there's no hops. It's a single layer2 network with no routing. Single segment and single broadcast...
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    Just to let you know the solution I have chosen, tested and since today working almost in production is security/tinc. It's exactly what I described above and what I needed. My setup is tinc configured in switch mode with 5 sites which resulted into a single layer2 network with 5 hosts in...
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    GlusterFS

    Hello, I initiated a mail communication with the glusterfs, please follow the 2 mails, I think this is a lot of useful information. From: "Kaloyan" <k_georgiev@trud.bg> To: "craig001" <craig001@lerwick.hopto.org> Cc: "mat" <mat@FreeBSD.org>, "rene" <rene@FreeBSD.org>, "eugen"...
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    Hello dch, net/zerotier sounds like exactly what I needed. I was very interested in this solution and even created 2 VMs for test. However before starting the setup I wanted to read the documentation https://www.zerotier.com/manual/. I noticed that there's something called "planet earth" which...
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    Simple high network load causing CARP switches and timeouts on VMWare VMs

    Yes, it's done on vmware virtual switches - promiscuous mode and tolerate mac address changes. Also have done this according to this articule because in the past I had issues with duplicated heartbeat packages received: esxcli system settings advanced set -o /Net/ReversePathFwdCheckPromisc -i 1...
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    Poor network performance on FreeBSD 12.1

    Would it be possible that I/O bottleneck is in happening? If you are transferring it would be written on a filesystem with some disk device as backend. Linux OS may apply block device buffering into the RAM and FreeBSD with it's raw devices may be slower on small writes due it's raw device...
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    Simple high network load causing CARP switches and timeouts on VMWare VMs

    Hello, Thank you for the suggestion. Tried it yesterday, switched all interfaces to vmx3 and the issue still repeats. tcpdump says that the multicast vrrp heartbeat is being delayed. Advbase is 1 second, but for some reason the delay is 3-4 seconds and then I see several hartbeat packages...
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    Poor network performance on FreeBSD 12.1

    Have you tried different version of FreeBSD?
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    Simple high network load causing CARP switches and timeouts on VMWare VMs

    Hello, Recently I have migrated 2 firewalls in CARP setup from OpenBSD to FreeBSD 12.1-RELEASE on vmware VMs (ESXi 6.5) with E1000 interfaces. Both hosts are with 10Gbit interfaces connected to on single 10Gbit switch. The CARP setup is working fine during the day but during the night I got...
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    Looks like exactly what I need and seems the last updates are very recent. However I haven't heard about this solution and I'm not sure how reliable and how serious project it is. I will try to find some more information about it and probably compare it with scenario mixed between MPLS and...
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    I was imagining that it will not require routing - one single VPN network. For the non-vpn (pure internet) traffic every server on every site should have it's default gateway set by it's own ISP.
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    Solved Decentralized VPN? Is it possible? Can it be done with OpenVPN?

    Hello, I have many servers on many different locations. They are communicating between each other via Internet. However there's only one site that has OpenVPN server, the rest are clients. If this site is down then all of the clients lose connection between each other and the entire solution...
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