FreeBSD

Updating my FreeBSD 12.2 host to FreeBSD 13.0

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I am going to upgrade a FreeBSD 12.2 host to FreeBSD 13.0 with one reboot. Actually, here, because of the zpool update, there is another reboot. This is significantly fewer than the standard upgrade process (yeah, critics claim 1 is not significantly less than 2; sigh). The instructions are taken from vermaden’s blog post on Upgrade FreeBSD with ZFS Boot Environments. I have seen a couple of references to this post lately and […]

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Moving zroot/usr/local to zroot/usr

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Today I was updating a FreeBSD server from 12.2 to 13.0 – I was using a new approach for my upgrades. This was my second host to upgrade like this. The first went smoothly. This one, not so much. NOTE: this turned out to be insufficient because /usr was mounted: [dan@slocum:~] $ zfs get canmount zroot/usr NAME PROPERTY VALUE SOURCE zroot/usr canmount on received This system was manually converted, poorly, to a BE

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snapshot ; ls ; destroy; dataset is busy – WTF?

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I have found this bizarre situation where a FreeBSD 12.2 snapshot cannot be destroyed. This is the simple example, which works: [dan@pkg01:~] $ sudo zfs snapshot tank_fast/poudriere@snapshot-for-backup [dan@pkg01:~] $ sudo zfs destroy tank_fast/poudriere@snapshot-for-backup [dan@pkg01:~] $ This is the simple example, which fails: [dan@pkg01:~] $ sudo zfs snapshot tank_fast/poudriere@snapshot-for-backup [dan@pkg01:~] $ ls /usr/local/poudriere/.zfs/snapshot/snapshot-for-backup cache data jails ports [dan@pkg01:~] $ sudo zfs destroy tank_fast/poudriere@snapshot-for-backup cannot destroy snapshot tank_fast/poudriere@snapshot-for-backup: dataset is busy [dan@pkg01:~] $ EDIT: we

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Converting an iocage vnet jail to a vnet jail

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In this post I will be creating a ‘new’ jail which uses vnet. I say ‘new’ because I am actually Converting an iocage jail to a vanilla jail which happens to use vnet. NOTE: I originally failed to get this to work. You can read about it. I’m going to repost this article soon with a working solution. I won’t describe the process of creating the jail. Sorry. For the record: FreeBSD 12.2

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Deleting old FreeBSD boot environments

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I like boot environments (BE) on FreeBSD. They were especially handy when building the AWS host for FreshPorts, since I had no serial console. I would create a BE saving the current status, then make some changes. I’d mark the current BE as boot once, so I could boot back in the known good BE. Worst case, I could mount the storage onto a rescue EC2 instance and adjust the bootfs value of

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net-mgmt/net-snmp wants /snmp/snmpd.conf

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NOTE: If you are looking to configure net-mgmt/net-snmp for the first time, the latest article is Configuration of net-mgmt/net-snmp on FreeBSD. snmpd can be royal pain to configure. I got my hints from Ryan Steinmetz, the maintainer for the FreeBSD port. Lately, net-snmpd has changed how net-snmp-config works. In this post: FreeBSD 12.2 net-snmp-5.9_3,1 Compare my hints with the following, run today with net-snmp-5.9_3,1: [dan@nginx01:~] $ sudo net-snmp-config –create-snmpv3-user -ro -x AES -a

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Converting an iocage jail to a vanilla jail

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Tonight I got blocked by iocage and handling a ZFS filesystem from within an iocage jail. These are the steps I followed to convert that jail from iocage to a vanilla jail. The variable To make this solution easier to use, at least for me, on future jail migrations, I have these variables: For example, my devgit-nginx01 jail is at: [dan@knew:~] $ zfs list system/iocage/jails/mysql56 NAME USED AVAIL REFER MOUNTPOINT system/iocage/jails/mysql56 11.5G 20.6T

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Preventing a given package from being installed

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I have a few development jails dedicated to my work on FreshPorts. It’s been a hobby of mine since the late 1990s. The code I create gets packaged, ready to deploy onto the test, stage, and production hosts. What I absolutely do not want to happen, and it’s happened recently, is for those packages to be installed on the development environments. Why? It installs to the same location as the working copy of

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The replacement – a followup

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Yesterday, I started a zpool replace. It finished overnight, and dropped the suspect drive out of the vdev. The resilver finished in the middle of the night: As you can see, da22p1 has taken the place of da17p1. The resilver took As the new drive is being resilvered, I started looking at metrics. Here is gstat. Look at how da22, the replacement drive is getting all the writes, compared to the others. LibreNMS

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smartctl output TOSHIBA MD04ACA500 653AK2MXFS9A

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It is time to replace /dev/da17 in knew. The replacement drive is also documented. The replacement procedure has also been documented. An upcoming blog post will document the replacement. I’m seeing these messages: Dec 12 09:23:03 knew smartd[2124]: Device: /dev/da17 [SAT], 40 Currently unreadable (pending) sectors Dec 12 09:53:04 knew syslogd: last message repeated 1 times Dec 12 10:23:03 knew syslogd: last message repeated 1 times Dec 12 10:53:04 knew syslogd: last message

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