Package: netinstall
Version: Debian GNU/Linux 6.0.0 "Squeeze" - Official i386 NETINST
Binary-1, 20110205-14:34
When a disk is partitioned, the partitions are later found to not
end/start on cylinder boundaries. For example:
~# fdisk -l /dev/sda
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0007d8f1
Device Boot Start End Blocks Id System
/dev/sda1 1 973 7811072 82 Linux swap / Solaris
Partition 1 does not end on cylinder boundary.
/dev/sda2 * 973 121602 968949760 fd Linux raid autodetect
~#
The above example was actually the result of an earlier amd64 version
of the Debian squeeze netinstaller, downloaded on the 6th of November
2010. (The i386 version mentioned at the beginning of this report was
found to have this same problem yesterday and also involved the
partitioning a set of 1 TB disks that were configured in a RAID1
array. Until then I had not noticed that anything was amiss with my
earlier installations.)
However, an i386 version downloaded on the 19th of June 2010 does not
have this problem and I was able to properly complete the installation
yesterday by starting the installation and partitioning the disks with
this older version, but then aborting that and completing the
procedure with the most recent version.
My work method also involved using all space available on the RAID1
volume in question for LVM2. However, after doing this I saw that
something 56.2 bytes of disk space were marked as "unusable." This was
the case with the disk systems that did not eventually turn out to end
on cylinder boundaries. When it did work properly the other day, the
left over unusable space was exactly 512 bytes.
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