IMHO these bugs appear to point to the same root cause:
https://bugs.launchpad.net/ubuntu/+source/gnome-disk-utility/+bug/1034609
and
https://bugs.launchpad.net/ubuntu/+source/parted/+bug/742164
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I also get this bug on a newly installed 12.4 with Seagate ST2000DM001
drives. Reported misalignment is 3072 bytes. Both drives work and pass
all diagnostics, but average seek time is 14.2 to 14.4 ms.
based on question 184477 I ran
sudo fdisk -l; mount; echo; lsb_release -a; uname -a
and got
This PC runs only 12.4, and boots from a smaller 3rd disk, not these
disks. I have nothing on these disks yet, so am will to try anything.
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https://bugs.launchpad.net/bugs/742123
Title:
Getting The partition is misaligned by 506880 bytes. 4tb partition on
a raid 0 of two 2tb drives, created by palimpsest (gnome disk utility).
On Oneric.
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** Changed in: gnome-disk-utility (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/742123
Title:
creates a misaligned partition
To manage notifications about
** Attachment added: disk utility.png
https://bugs.launchpad.net/bugs/742123/+attachment/1938202/+files/disk%20utility.png
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https://bugs.launchpad.net/bugs/742123
Title:
creates a
I guess this may actually be a reflection of parted half-supporting 4kb
alignment?
The device reports:
mbp@joy% cat alignment_offset queue/minimum_io_size queue/max_segment_size
queue/physical_block_size queue/optimal_io_size
0
4096
65536
4096
0
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libparted should fully support 4kb alignment, although the application
using it does have to switch it into the right mode. Maybe gnome-disk-
utility is doing it wrong.
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see also bug 742164
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https://bugs.launchpad.net/bugs/742123
Title:
creates a misaligned partition
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