Author name: Dan Langille

I've been playing with computers since I read an Elementary Electronics magazine way back in the 1970s. I started contributing to open source projects in 1998. After that, I gradually moved from being a software developer to being a systems administrator.

Jails with embedded, but not jailed, ZFS datasets – how to mount/umount

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This approach did not work, because I used the wrong set of filesystems. See below for Error. This post has been replaced by Jails with embedded, but not jailed, ZFS datasets – how to mount/umount – corrected. NOTE: on yesterday’s (2023-10-04) reboot, the file systems did not properly mount. zfs get mounted said they were mounted, but the directories were empty. Stopping, then starting the jail resulted in a proper mount. I wonder […]

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Can I really swap CPU and RAM between my Dell R730 servers?

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Can I really swap CPU and RAM between my Dell R730 servers? I wrote about that recently. Sure. It might just work. First, let’s look at the service tags and find out. I have four Dell R730 servers in the basement: r730-01 – main development server – contains 2x E5-2650L v3 : add some RAM from r730-04 and swap in the CPUs (E5-2699V3) from r730-02 – 9ZJ1282 – 591-BBCH : PowerEdge R730/R730xd Motherboard

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Moving time capsule from host to jail and connecting my MacBook to ZFS on FreeBSD

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I have Macbooks at home I use them. I use Time Capsule on ZFS on FreeBSD to back them up. In this post: FreeBSD 13.2 OSX Ventura 13.6 I first implemented this directly on the FreeBSD host. Today, I am moving that service into a jail. This post will roughly outline the changes I made to accomplish this move. It won’t go into the details of how to set up Time Capsule. See

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Why didn’t I choose the bigger CPUs?

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I have four Dell R730 servers in the basement: r730-01 – main development server r730-02 – unused r730-03 – main storage server r730-04 – unused So what’s on each one? If you look at each of the links, you’ll find this information on CPU and RAM. The information is collected from /var/run/dmesg.boot, but not presented as a direct copy/paste. It has been rearranged for ease of reading. r730-01 This host is used for

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r730-01

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This post has been replaced by a newer one. For reference, the previous post on this server is still available. Today I noticed this post is out of date. I like to keep this information around for each host, just in case it’s needed during a rescue mission. This is my primary developer server in my basement. gpart zpool list zpool status zfs list dmesg sesutil show jls

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Bacula: copying jobs from one bacula-sd to another bacula-sd on FreeBSD

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I’m moving some backups from one bacula-sd to another bacula-sd. If you don’t know what that means, this is not the post for you. You need more Bacula knowledge. I’m retiring a host and moving some of the backups on that host to another host. This post follows on from Bacula – copying the latest jobs over from one SD to another, now that the required space is installed and configured. In this

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Getting the right type of certificate

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This post covers my debugging of a self-signed certificate on one of my Bacula instances. The error message is: I’ve encountered that unsupported certificate purpose message before: OpenVPN: unsupported certificate purpose SSL client vs server certificates and bacula-fd I always thought it was a server versus client issue. Now I’m not so sure. There was also an ssl-admin issue In this post: FreeBSD 13.2 ssl-admin-1.3.0 Bacula 9.6.7 – yes, that is rather outdated;

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Adding two more 12TB drives to the mirror

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As mentioned in several previous posts, I’m moving a server from one chassis to another. None of the hardware is coming over. Just the jails and data. These drives came from serverpartdeals.com. They are used and re-certified. Recently, I’ve been trying out two new 12TB drives. I’m looking forward to the reduced noise level, as well as the reduced power consumption and heat. In this post: FreeBSD 13.2-RELEASE-p2 The testing zpool I created

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How much noise will I lose when I power off this server?

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This morning I pondered how much will noise reduce when I power off that server? From the comfort of my living room, directly above the rack in the basement, I powered it off. At first, I was disappointed. I could still hear that repetitive whine. After considering powering off one of the other hosts, I realized the noise I heard was the ceiling fan. After switching that off, I could no longer hear

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