replacing zfs disk (freebsd-boot vs freebsd-efi)
mike tancsa
mike at sentex.net
Tue Oct 29 14:17:42 UTC 2019
In the past when replacing a disk in a zfs pool that I boot from, simply
doing
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
where
p1 = freebsd-boot
p2 = freebsd-swap
p3 = freebsd-zfs
works just fine (ie. replacing ada0). However, on this one box, I
noticed the disk has both freebsd-boot and efi
p1 = efi
p2 = freebsd-boot
p3 = freebsd-swap
p4 = freebsd-zfs
If I replace ada0, what do I need to do in order to full restore boot
functionality to the disk ?
gpart bootcode -b /boot/pmbr -p /boot/boot1.efifat -i 1 ada0
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada0
vs
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
?
And is it boot1.efi or boot1.efifat ? I am guessing I also need the lable ?
gpart modify -l efiboot2 -i 1 ada0
e.g. current ada0 is
Geom name: ada0
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 976773127
first: 40
entries: 128
scheme: GPT
Providers:
1. Name: ada0p1
Mediasize: 209715200 (200M)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 20480
Mode: r0w0e0
efimedia: HD(1,GPT,a1ffb215-ff5c-11e8-98c7-ac1f6b70b306,0x28,0x64000)
rawuuid: a1ffb215-ff5c-11e8-98c7-ac1f6b70b306
rawtype: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
label: efiboot0
length: 209715200
offset: 20480
type: efi
index: 1
end: 409639
start: 40
2. Name: ada0p2
Mediasize: 524288 (512K)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 209735680
Mode: r0w0e0
efimedia: HD(2,GPT,a20b59f0-ff5c-11e8-98c7-ac1f6b70b306,0x64028,0x400)
rawuuid: a20b59f0-ff5c-11e8-98c7-ac1f6b70b306
rawtype: 83bd6b9d-7f41-11dc-be0b-001560b84f0f
label: gptboot0
length: 524288
offset: 209735680
type: freebsd-boot
index: 2
end: 410663
start: 409640
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