Public bug reported:
Binary package hint: partman-base
On two HP ProLiant 360s with HP (Compaq) 400i SAS RAID, partman creates
partitions which do not match the cylinder boundaries. This happens with
Ubuntu 7.10 and 8.04, as well as with Debian Etch - so it's not just
Ubuntu's version of partman at fault. It will appear to install
normally, but at least in my experience partitions not on cylinder
boundaries are prone to get lost or corrupted later. Canonical lists the
HP 360s as tested successfully with Ubuntu. HP lists Debian Etch (but
not Ubuntu) as tested successfully with the 360. Older HP firmware
evidently had trouble with other partitioning utilities (although they
don't fully specify which beyond "FDISK"). But even the most current
400i RAID firmware, which works fine with Linux's fdisk, has this
problem with partman.
I was able to work around this by using a 3rd-party CD to set up the
partitions first with fdisk, then only using partman to select and
format partitions, not to create them. In multiple runs with Ubuntu's
installer before that, both in the guided and manual install modes,
partman never succeeded in writing partitions that fell on the cylinder
boundaries, not a single partition. The testdisk utility was useful in
diagnosing what was going on. I only discovered the problem after
partitions got corrupted on a server just before we were to put it into
production.
** Affects: partman-base (Ubuntu)
Importance: Undecided
Status: New
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partman partition boundaries don't match cylinders
https://bugs.launchpad.net/bugs/229312
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