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Subject: [Bug 212139] r298900 introduced a fatal failure case for >2TB disk
 size reporting bugs
Date: Thu, 25 Aug 2016 20:41:42 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212139

--- Comment #3 from Toomas Soome <tsoome@freebsd.org> ---
I havent found yet good way, but there is something to think about.

Essentially there are 2 cases:

1. unpartitioned raw disk with pool on it. We can get size from pool label =
and
provide as disk meta info down to biosdisk if we like to.=20

2. partitioned disk - almost all cases, except GPT backup label read, depen=
d on
partition boundaries, so essentially the read should honor the partition
boundaries.
It means the disk open, should again have means to pass the boundaries down=
 to
biosdisk.

So with exception of GPT backup label read and unpartitioned disk, all other
reads should be checked not against disk size, but partition size... and th=
is
information is known.

--=20
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