Date: Fri, 6 Sep 2019 12:06:49 +0200 From: Julien Cigar <julien@perdition.city> To: freebsd-questions@freebsd.org Subject: gpart bootcode for MBR + ZFS? Message-ID: <20190906100649.GH38457@home.lan>
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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
=3D> 63 4294967232 ada0 MBR (3.6T)
63 1 - free - (512B)
64 4294967224 1 freebsd [active] (2.0T)
4294967288 7 - free - (3.5K)
=3D> 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)
=3D> 63 4294967232 ada1 MBR (3.6T)
63 1 - free - (512B)
64 4294967224 1 freebsd [active] (2.0T)
4294967288 7 - free - (3.5K)
=3D> 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:=20
$> 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
=2E.?
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 11:1=
3:54 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=3D"zfs:zroot/ROOT/default"
zfs_load=3D"YES"
zpool_cache_load=3D"YES"
zpool_cache_name=3D"/boot/zfs/zpool.cache"
zpool_cache_type=3D"/boot/zfs/zpool.cache"
Thank you!
Julien
--=20
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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