Date: Sun, 10 Mar 2013 01:30:50 -0500 From: J David <j.david.lists@gmail.com> To: Cody Ritts <cr@caltel.com> Cc: freebsd-fs@freebsd.org Subject: Re: Aligning MBR for ZFS boot help Message-ID: <CABXB=RRds2bU%2B3LhykkzV=tt4_PSgqPEZnLFeeptMRpy7Hz3zw@mail.gmail.com> In-Reply-To: <CABXB=RRE3%2Bnq9RioVi4Er4kRP_=Tbonoh=rnh91Ew=3hzYapbw@mail.gmail.com> References: <513C1629.50501@caltel.com> <CABXB=RRE3%2Bnq9RioVi4Er4kRP_=Tbonoh=rnh91Ew=3hzYapbw@mail.gmail.com>
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Just to check myself, I ran this real quick on a virstor:
# truncate -s 1G deleteme
# mdconfig -a -t vnode -f deleteme
md0
# gvirstor label -s 62522712k fakessd md0
Resizing virtual size to be a multiple of chunk size.
New virtual size: 61056 MB
Resizing virtual size to fit virstor structures.
New virtual size: 61184 MB (32 new chunks)
# gpart create -s gpt /dev/virstor/fakessd
virstor/fakessd created
# gpart add -t freebsd-boot -b 34 -s 128 /dev/virstor/fakessd
virstor/fakessdp1 added
# gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 /dev/virstor/fakessd
bootcode written to virstor/fakessd
# gpart add -b 2048 -s 51G -l zroot -t freebsd-zfs /dev/virstor/fakessd
virstor/fakessdp2 added
# gpart add -t freebsd-swap /dev/virstor/fakessd # no -s = use all space
left
virstor/fakessdp3 added
# gpart show /dev/virstor/fakessd
=> 34 125304765 virstor/fakessd GPT (59G)
34 128 1 freebsd-boot (64k)
162 1886 - free - (943k)
2048 106954752 2 freebsd-zfs (51G)
106956800 18347999 3 freebsd-swap (8.8G)
# zpool create zroot /dev/gpt/zroot
# zpool status
pool: zroot
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
zroot ONLINE 0 0 0
gpt/zroot ONLINE 0 0 0
errors: No known data errors
I won't have much luck booting a virstor to test this :) but it sure looks
pretty, so hopefully it will work for you.
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