SOLVED: FreeBSD 12.2 ZFS: can only boot from disk, mirror, raidz1, raidz2, and raidz3 vdevs

Tuesday, February 16, 2021

After upgrading a file server to FreeBSD 12.2 this last week we ran into an interesting issue where the boot loader immediately errored with the following message: ZFS: can only boot from disk, mirror, raidz1, raidz2, and raidz3 vdevs vdev_init_from-nvlist: 5 It seemed to be a similar issue to this: https://reviews.freebsd.org/D20319 but not quite the… Read more »

HOWTO: FreeBSD Partition Alignment for RAID, SSDs & 4k Disk Drives

Friday, July 6, 2012

Last Updated January 21st, 2017. This article is really popular, I’ll do my best to keep it up to date! I’ve added notes about enabling TRIM support. Aligning Partitions Under FreeBSD for Optimum Performance with RAID Arrays, SSDs and 4k Disk Drives Note: These instructions have been verified to work for FreeBSD 9.1, FreeBSD 9.2,… Read more »

HOWTO: Installing FreeBSD with gmirror (software RAID 1) and the GPT partitioning scheme

Saturday, May 5, 2012

Last Updated November 14th, 2016: Updated to include that this works under FreeBSD 11.0 as well. Really anything between FreeBSD 9 and 11 should work. April 30th, 2015: This article is really popular, I’ll do my best to keep it up to date! I’ve added notes about TRIM, alignment and GMIRROR (-h) labeling since it… Read more »

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