ZFS

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 This post has been replaced by Jails with embedded, but not jailed, ZFS datasets – how to mount/umount – corrected.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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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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Bacula – calculating Maximum Volume Bytes and Maximum Volumes based on historical data

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I’ve used Bacula since at least January 2004 (so nearly 20 years). I liked it so much I dropped my deployment-in-motion of another tool (if you search lightly, you can find out which one). I liked it so much, I wrote a PostgreSQL backend for it. This post is not for Bacula novices. This post is for those who have already deployed a Bacula instance and are rather familiar with the process. I

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Moving ZFS filesystems/datasets from one ZFS zpool to another

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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, or a bookmark. However, usually when I talk about a filesystem, it might be dataset. It’s a fine

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Dan makes another zpool

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I spent my lunch, and most of my mortgage payment, on 4 x 4TB Blue 4TB SSD 3D NAND (WDS400T2B0A). In this post: FreeBSd 13.1 smartctl output partition creation zpool creation In they go This is them, being inserted into the system: I am concerned by that 150.000MB/s transfers smartctl Let’s look at the smartctl output, just in cases there are returns. What speed can that drive do? I was concerned about that

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booting without mrsas driver – lots of errors

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Today I noticed that all the drives in the R730 host had 150MB/s speeds mentioned in the boot messages. They are all SSDs on an SAS bus. They should be at 600.000MB/s. The HBA in question is a AVAGO MegaRAID SAS FreeBSD (aka PERC H730P Mini). It can use either the mfi driver (default) or the mrsas driver (by setting hw.mfi.mrsas_enable=”1″ in /boot/loader.conf This is an SSD in a PCIe slot: This is

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Wrong recordsize on zfs send | zfs recv filesystems

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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 is usually OK, except for some specific datasets. For example: * video * backups * distfiles (tarballs) Here

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Transferring a jail from one host to another

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I’ve started merging these two hosts: r710-01 slocum into this one host: r740-01 The goal is to then retire those first two hosts. This post covers the initial bulk copy of all the data from two hosts into the one. In this post: FreeBSD 13.1 Each jail runs on its own zfs filesystem Not covered by this post Creating jails Creating snapshost Detailed usage of syncoid hosts not using zfs The overall process

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

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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 a configuration error or something local has gone wrong. In this post: FreeBSD 13.1 poudriere-3.3.7_1 NOTE: This is

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using syncoid to backup ZFS snapshots – home assistant

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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 provided by the sanoid package on FreeBSD. I’m sure any other packaging system does similar. In this post:

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