Add mirrored drive to existing ZFS install

[abulafia]

, your OmniOS example seems to be Sparc? At least the device names hint at that.

Nope - OmniOS is pure x64. I think SPARC is only catered for by Triblix.

[tinderbox3168]

Great thread, exactly what I was looking for.

One more question: Can I run the commands directly from OPNSense shell while booted or do I have to boot from an external drive?

[Patrick M. Hausen]

All from the live system. For another complete walkthrough see

https://forum.opnsense.org/index.php?topic=32650.msg157910#msg157910

[tinderbox3168]

Thanks, worked nicely.

The only weird thing was, that gmirror load gave the following error message "gmirror: Command 'load' not available; try 'load' first.".
Don't know if it was because its is already loaded. (however gmirror unload gives a similar error).
In any case, I was able to complete the steps afterwards and gmirror status now shows me the swap mirror.

[charles.adams]

So I'm adding a second NVME drive to my DEC850v2 and I wanted to check the commands since all the examples above seem to be for SATA drives.

output of gpart show on original drive:

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gpart show nda0
=>        3  500118181  nda0  GPT  (238G)
          3     532480     1  efi  (260M)
     532483        305     2  freebsd-boot  (153K)
     532788  482344960     3  freebsd-zfs  (230G)
  482877748   17240436     4  freebsd-swap  (8.2G)

Output of zpool status:

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zpool status
  pool: zroot
 state: ONLINE
status: Some supported and requested features are not enabled on the pool.
        The pool can still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
        the pool may no longer be accessible by software that does not support
        the features. See zpool-features(7) for details.
config:

        NAME        STATE     READ WRITE CKSUM
        zroot       ONLINE       0     0     0
          nda0p3    ONLINE       0     0     0

What I think I should do:

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#copy partition table
gpart backup nda0 | gpart restore -F nda1
#copy EFI
dd if=/dev/nda0p1 of=/dev/nda1p1
#copy bootloader
dd if=/dev/nda0p2 of=/dev/nda1p2
#mirror zfs
zpool attach zroot nda0p3 nda1p3
# turn swap partition into mirrored device
gmirror load
swapoff -a
gmirror label -b round-robin swap nda1p4
gmirror configure -a swap
gmirror insert swap nda0p4
Does this seem sound for how the NVME drive is configured on the DEC850 v2?

[Patrick M. Hausen]

Looks good.