Open Source

Adjusting my ZFS filesystems to conform with standard FreeBSD boot environments

Leave a Comment / beadm, bectl, ZFS / By /

Get FreeBSD 12.2 mfsBSD (because that matches the OS on slocum), burn it to a thumb drive using OSX. NOTE: the following didn’t work. I wound up not having the right values in /lib and /var/db/ I don’t know what I did wrong, but I did manage to fix them up afterwards. I suspect that I still had zroot/usr mounted and did not notice. I will keep my notes here for future reference […]

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Updating my FreeBSD 12.2 host to FreeBSD 13.0

Leave a Comment / bectl, FreeBSD, freebsd-update, Open Source, System upgrades, Upgrades / By /

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?

Leave a Comment / FreeBSD, Jails, ZFS / By /

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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Creating a vnet jail

Leave a Comment / Networks, Open Source / By /

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: HEADS UP: I failed to get this to work. I’m still going to post it though. What I did wrong: I should not have used ix1 – that’s the wrong NIC to use. This needs to use an active

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Deleting old FreeBSD boot environments

2 Comments / bectl, FreeBSD, General, Open Source / By /

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

1 Comment / FreeBSD, snmp / By /

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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Moving some ZFS filesystems to the ‘trash’ and removing all their snapshots – sanoid

Leave a Comment / General, sanoid, snapshots, ZFS / By /

I recently discovered that you can delete all snapshot from a ZFS filesystem with a single command. It came to me via fortune: You can delete a range of ZFS snapshots (a-z) in multiple ways. The following will delete d and all earlier snapshots: zfs destroy mypool/data@%d To delete d and all later snapshots: zfs destroy mypool/data@d% To delete all dataset snapshots: zfs destroy mypool/data@% Make sure to let ZFS perform a dry

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mosquitto: upgrade from 1.x to 2.x requires configuration changes to keep working

1 Comment / MQTT / By /

I updated net/mosquitto from 1.6.7_1 to 2.0.8 on March 14, 2021. It did not get restarted at that time. It wasn’t until sysutils/anvil brought in a new certificate and attempted to restart mosquitto did the monitoring start detecting the problem: mosquitto wasn’t running. It’s the pid file Looking into it, nothing was logged when starting via rc.d: $ sudo service mosquitto start Starting mosquitto. Starting it from the command line gave useful information:

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