ZFS

Moving ZFS filesystems/datasets from one ZFS zpool to another

Now that I’ve filled up data01, I bought some more SSDs and created another zpool. Today, on this snow-is-anticipated Saturday winter morning, I’m going to move some ZFS filesystems/datasets around. Side note: I like the term dataset better than filesystem. man zfs talks about datasets, which can be a file system, a volume, a snapshot, …

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Wrong recordsize on zfs send | zfs recv filesystems

Over the past few days, I’ve posted a lot about transferring jails from two hosts into one host. One of the steps involves using zfs send | zfs recv to send the files from one host to another. I’m using syncoide for that transfer. A new fileystem’s recordsize defaults to 128K. In my case, that …

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error: cannot open ‘.git/FETCH_HEAD’: No space left on device

After moving the poudriere jail (pkg01) to the new host (r730-01), I noticed this message from Nagios: That “email found in . /var/mail/dan” message is significant. In general mail on my hosts/jails is not delivered locally. It all goes off-host. That’s why I have this Nagios check. When mail like that is found, it’s either …

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using syncoid to backup ZFS snapshots – home assistant

Copies of data are good. Especially if on a different host. zfs snapshots combined with zfs send | zfs recv make replication of zfs file systems especially easy. I am already using sanoid to manage zfs snapshots. Now I’m going to use syncoid to transfer those snapshots to another host. Both sanoid and syncoid are …

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Upgrading an NVMe zpool from 222G to 1TB drives

The FreshPorts dev, test, and stage websites are hosted on a server in my basement. Each instance consists of two jails: an ingress node – for pulling in new commits (and other data) into the database. a webserver node – for displaying the web pages. The new drives: Sometimes the zpool gets too close to …

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da12 in my FreeBSD zfs array disappeared at :02 and came back at :04

This post is based on a tweet and was created after a followup incident occurred today. The post was created to consolidate the information into a blog post so I could easily find it later. Details about this host (disks, zpool, gpart, etc) are in this post. On March 15 2022, I noticed these messages …

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