gpart bootcode for MBR + ZFS?

[Julien Cigar]

Hello,

It's a long time since I had to deal with MBR partition scheme..
I had to replace a disk (ada1) in an old machine with the following
partition scheme:

~/ gpart show
=>        63  4294967232  ada0  MBR  (3.6T)
          63           1        - free -  (512B)
          64  4294967224     1  freebsd  [active]  (2.0T)
  4294967288           7        - free -  (3.5K)

=>         0  4294967224  ada0s1  BSD  (2.0T)
           0     4194304       1  freebsd-zfs  (2.0G)
     4194304    67108864       2  freebsd-swap  (32G)
    71303168  4223664048       4  freebsd-zfs  (2.0T)
  4294967216           8          - free -  (4.0K)

=>        63  4294967232  ada1  MBR  (3.6T)
          63           1        - free -  (512B)
          64  4294967224     1  freebsd  [active]  (2.0T)
  4294967288           7        - free -  (3.5K)

=>         0  4294967224  ada1s1  BSD  (2.0T)
           0     4194304       1  freebsd-zfs  (2.0G)
     4194304    67108864       2  freebsd-swap  (32G)
    71303168  4223664048       4  freebsd-zfs  (2.0T)
  4294967216           8          - free -  (4.0K)

I did the usual: 
$> gpart backup ada0 | gpart restore -F ada1
$> gpart backup ada0s1 | gpart restore -F ada1s1
$> gpart bootcode -b /boot/boot0 ada1

My question is: is it enough or do I need to dd /boot/zfsboot somewhere
..?

ZFS pools are:

~/ zpool status
  pool: bootpool
 state: ONLINE
status: Some supported 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.
  scan: resilvered 183M in 0 days 00:01:40 with 0 errors on Fri Sep  6 11:13:54 2019
config:

	NAME         STATE     READ WRITE CKSUM
	bootpool     ONLINE       0     0     0
	  mirror-0   ONLINE       0     0     0
	    ada0s1a  ONLINE       0     0     0
	    ada1s1a  ONLINE       0     0     0

errors: No known data errors

  pool: zroot
 state: ONLINE
status: One or more devices is currently being resilvered.  The pool will
	continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Fri Sep  6 11:11:33 2019
	410G scanned at 138M/s, 210G issued at 70.9M/s, 632G total
	210G resilvered, 33.21% done, 0 days 01:41:39 to go
config:

	NAME         STATE     READ WRITE CKSUM
	zroot        ONLINE       0     0     0
	  mirror-0   ONLINE       0     0     0
	    ada0s1d  ONLINE       0     0     0
	    ada1s1d  ONLINE       0     0     0

errors: No known data errors

and I have the following in loader.conf:

vfs.root.mountfrom="zfs:zroot/ROOT/default"
zfs_load="YES"
zpool_cache_load="YES"
zpool_cache_name="/boot/zfs/zpool.cache"
zpool_cache_type="/boot/zfs/zpool.cache"

Thank you!

Julien


-- 
Julien Cigar
Belgian Biodiversity Platform (http://www.biodiversity.be)
PGP fingerprint: EEF9 F697 4B68 D275 7B11  6A25 B2BB 3710 A204 23C0
No trees were killed in the creation of this message.
However, many electrons were terribly inconvenienced.
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