FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
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Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#2This is getting lots of upvotes and rightfully so. I think people would love more posts about FreeBSD: especially about ZFS and bhyve (the FreeBSD hypervisor).
It's a bit sad that this Lenovo ThinkCentre ain't using ECC. I use and know ZFS is good but I'd prefer to run it on a machine supporting ECC.
I never tried FreeBSD but I'm reading more and more about it and it looks like although FreeBSD has always had its regular users, there are now quite some people curious about trying it out. For a variety of reasons. The possibility of having ZFS by default and an hypervisor without systemd is a big one for me (I run Proxmox so I'm halfway there but bhyve looks like it'd allow me to be completely systemd free).
I'm running systemd-free VMs and systemd-free containers (long live non-systemd PID ones) so bhyve looks like it could the final piece of the puzzle to be free of Microsoft/Poettering's systemd.
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#3This is getting lots of upvotes and rightfully so. I think people would love more posts about FreeBSD: especially about ZFS and bhyve (the FreeBSD hypervisor). It's a bit sad that this Lenovo ThinkCentre ain't using ECC. I use and know ZFS is good but I'd prefer to run it on a machine supporting ECC. I never tried FreeBSD but I'm reading more and more about it and it looks like although FreeBSD has always had its reg…
other filesystems are just as susceptible to data corruption from memory errors. this is not a weakness unique to ZFS.
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#4When setting up root-on-ZFS on FreeBSD, it's worth knowing about boot environments (a concept originally from Solaris):
* https://klarasystems.com/articles/managing-boot-environments...
* https://wiki.freebsd.org/BootEnvironments
* https://man.freebsd.org/cgi/man.cgi?query=bectl
* https://dan.langille.org/category/open-source/freebsd/bectl/
* https://vermaden.wordpress.com/2022/03/14/zfs-boot-environme...
It lets you patch/upgrade an isolated environment without touching the running bits, reboot into that environment, and if things aren't working well boot back into the last known-good one.
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#5When setting up root-on-ZFS on FreeBSD, it's worth knowing about boot environments (a concept originally from Solaris): * https://klarasystems.com/articles/managing-boot-environments... * https://wiki.freebsd.org/BootEnvironments * https://man.freebsd.org/cgi/man.cgi?query=bectl * https://dan.langille.org/category/open-source/freebsd/bectl/ * https://vermaden.wordpress.com/2022/03/14/zfs-boot-environme... It lets you…
oh, i didnt knew the concept is taken from Solaris, which version of Solaris? and is there any official source that indicates it is from Solaris?
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#6When setting up root-on-ZFS on FreeBSD, it's worth knowing about boot environments (a concept originally from Solaris): * https://klarasystems.com/articles/managing-boot-environments... * https://wiki.freebsd.org/BootEnvironments * https://man.freebsd.org/cgi/man.cgi?query=bectl * https://dan.langille.org/category/open-source/freebsd/bectl/ * https://vermaden.wordpress.com/2022/03/14/zfs-boot-environme... It lets you…
oh, i didnt knew the concept is taken from Solaris, which version of Solaris? and is there any official source that indicates it is from Solaris?
> bectl and this manual page were derived from beadm(8).
* https://man.freebsd.org/cgi/man.cgi?query=bectl#end
> beadm(1M) originally appeared in Solaris.
* https://man.freebsd.org/cgi/man.cgi?query=beadm#end
Solaris Live Upgrade BEs worked with (mirrored) UFS root:
* https://docs.oracle.com/cd/E18752_01/html/821-1910/chapter-5...
* https://www.filibeto.org/sun/lib/solaris8-docs/_solaris8_2_0...
It allowed/s for migration from UFS to ZFS root:
* https://docs.oracle.com/cd/E23823_01/html/E23801/ggavn.html
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#7This is getting lots of upvotes and rightfully so. I think people would love more posts about FreeBSD: especially about ZFS and bhyve (the FreeBSD hypervisor). It's a bit sad that this Lenovo ThinkCentre ain't using ECC. I use and know ZFS is good but I'd prefer to run it on a machine supporting ECC. I never tried FreeBSD but I'm reading more and more about it and it looks like although FreeBSD has always had its reg…
"I think people would love more posts about FreeBSD"
Translate to: "I would love more post..."
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#8This is getting lots of upvotes and rightfully so. I think people would love more posts about FreeBSD: especially about ZFS and bhyve (the FreeBSD hypervisor). It's a bit sad that this Lenovo ThinkCentre ain't using ECC. I use and know ZFS is good but I'd prefer to run it on a machine supporting ECC. I never tried FreeBSD but I'm reading more and more about it and it looks like although FreeBSD has always had its reg…
You express a desire for more FreeBSD posts and then immediately wade into all the typical flame-warring that surrounds most BSD/ZFS posts (systemd, ECC RAM), and it's been that way for over a decade at this point.
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#9When setting up root-on-ZFS on FreeBSD, it's worth knowing about boot environments (a concept originally from Solaris): * https://klarasystems.com/articles/managing-boot-environments... * https://wiki.freebsd.org/BootEnvironments * https://man.freebsd.org/cgi/man.cgi?query=bectl * https://dan.langille.org/category/open-source/freebsd/bectl/ * https://vermaden.wordpress.com/2022/03/14/zfs-boot-environme... It lets you…
Sounds a lot like the A/B update method used widely in Android and to a lesser extend for embedded GNU/Linux OTA updates. But it uses two distinct boot partitions. Since ZFS is involved here, I assume that boot environments take advantage of its copy-on-write mechanism to avoid duplicating the entire boot dataset.
NixOS and Guix use a concept called 'system generations' to do the same without the support of the filesystem. LibOSTree can do the same and is called 'atomic rollback'.
Talking about NixOS, does anybody know of a similar concept in the BSD world (preferably FreeBSD)?
Re: FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)
#10When setting up root-on-ZFS on FreeBSD, it's worth knowing about boot environments (a concept originally from Solaris): * https://klarasystems.com/articles/managing-boot-environments... * https://wiki.freebsd.org/BootEnvironments * https://man.freebsd.org/cgi/man.cgi?query=bectl * https://dan.langille.org/category/open-source/freebsd/bectl/ * https://vermaden.wordpress.com/2022/03/14/zfs-boot-environme... It lets you…
Best feature of freebsd. I have really messed up the system and successfully restored a boot environment snapshot and everything is fine after.
It happens by default with freebsd-update (I hope the new pkg replacement still does it too)