Commit 2910413850 caused Windows 7
resizes to break with the 0xc0000225 boot error.
Change the --align-first auto (default) option so that it is more
conservative about when it moves the first partition. In particular
it doesn't move it if it's already aligned (as it is for Win7), nor if
there is more than one partition (also Win7).
Tested with: Windows XP, 2003, 7, Ubuntu 10.10 and RHEL 5.
Also we only permit MBR (DOS) and GPT partition tables. In theory
previously we allowed other partition table types, but it is unlikely
that it would have worked in reality.
Add a dependency so these tools are rebuilt from scratch if the
Guestfs API changes. This prevents the error:
"[...] make inconsistent assumptions over interface Guestfs".
This commit includes the generated changes to .depend files.
The old code mixed the business of planning the layout of the target
partitions with the creation of the target partitions. The
replacement code separates these into two tasks: firstly we create a
new 'partitions' list with the target layout, secondly this directly
drives the creation of the partitions.
As part of this change I have *removed* the old code that was supposed
to handle extended/logical MBR partitions. It simply didn't work, and
didn't have any hope of working, and there is a separate bug open to
fix it.
This avoids conflicts with the globally installed libguestfs
appliance, or lets us build in multiple local directories at the same
time without conflicts.
This is a fairly straightforward translation of Perl virt-resize into
OCaml. It is bug-for-bug and feature-for-feature identical to the
Perl version, except as noted below.
The motivation is to have a more solid, high-level, statically safe
compiled language to go forwards with fixing some of the harder bugs
in virt-resize. In particular contracts between different parts of
the program are now handled by statically typed structures checked at
compile time, instead of the very ad-hoc unchecked hash tables used by
the Perl version.
OCaml and the ocaml-pcre library (Perl-Compatible Regular Expressions
bindings for OCaml) are required.
Extra features in this version:
- 32 bit hosts are now supported.
- We try hard to handle the case where the target disk is not "clean"
(ie. all zeroes). It usually works for this case, whereas the
previous version would usually fail. However it is still
recommended that the system administrator creates a fresh blank disk
for the target before running the program.
- User messages are a bit more verbose and helpful. You can turn
these off with the -q (--quiet) option.
There is one lost feature:
- Ability to specify >= T (terabytes) sizes in command line size
expressions has been removed. This probably didn't work in the Perl
version.
Other differences:
- The first partition on the target is no longer aligned; instead we
place it at the same sector as on the source. I suspect that
aligning it was causing the bootloader failures.
- Because it's easier, we do more sanity checking on the source disk.
This might lead to more failures, but they'd be failures you'd want
to know about.
- The order in which operations are performed has been changed to make
it more logical. The user should not notice any functional
difference, but debug messages will be quite a bit different.
- virt-resize is a compiled binary, not a script.
