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Date:      Sun, 11 Apr 2021 18:02:36 +0200
From:      Andrea Venturoli <ml@netfence.it>
To:        freebsd-questions@freebsd.org
Subject:   gptzfsboot error
Message-ID:  <277f171a-6a6f-f500-7f15-7892c7f1159f@netfence.it>

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Hello.

I've converted an 11.4 machine from UFS to ZFS.
The machine boots via BIOS (not UEFI) and has two SATA disks partitioned 
with GPT with a zmirror on them

At boot I briefly get the following messages:
gptzfsboot: error 1 lba 4721914626
gptzfsboot: error 1 lba 977724091
gptzfsboot: error 1 lba 977724603
(... lots of other messages like the above ...)
Shortening read at 5721751601 from 16 to -594023507
gptzfsboot: error 1 lba 5721751601

The everything goes on normally and FreeBSD boots.


I searched for an explanation, but didn't find any.
Is this something to worry about?
What's the cause of "error 1"?



  bye & Thanks
	av.

P.S. Initially I had setup the disks myself, but when I saw this error, 
I removed them, let FreeBSD's installer prepare them from scratch and 
moved them back in. So I don't think I got something wrong.



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